/*!
* Paper.js v0.9.25 - The Swiss Army Knife of Vector Graphics Scripting.
* http://paperjs.org/
*
* Copyright (c) 2011 - 2014, Juerg Lehni & Jonathan Puckey
* http://scratchdisk.com/ & http://jonathanpuckey.com/
*
* Distributed under the MIT license. See LICENSE file for details.
*
* All rights reserved.
*
* Date: Sun Oct 25 11:23:38 2015 +0100
*
***
*
* Straps.js - Class inheritance library with support for bean-style accessors
*
* Copyright (c) 2006 - 2013 Juerg Lehni
* http://scratchdisk.com/
*
* Distributed under the MIT license.
*
***
*
* Acorn.js
* http://marijnhaverbeke.nl/acorn/
*
* Acorn is a tiny, fast JavaScript parser written in JavaScript,
* created by Marijn Haverbeke and released under an MIT license.
*
*/
var paper = new function(undefined) {
var Base = new function() {
var hidden = /^(statics|enumerable|beans|preserve)$/,
forEach = [].forEach || function(iter, bind) {
for (var i = 0, l = this.length; i < l; i++)
iter.call(bind, this[i], i, this);
},
forIn = function(iter, bind) {
for (var i in this)
if (this.hasOwnProperty(i))
iter.call(bind, this[i], i, this);
},
create = Object.create || function(proto) {
return { __proto__: proto };
},
describe = Object.getOwnPropertyDescriptor || function(obj, name) {
var get = obj.__lookupGetter__ && obj.__lookupGetter__(name);
return get
? { get: get, set: obj.__lookupSetter__(name),
enumerable: true, configurable: true }
: obj.hasOwnProperty(name)
? { value: obj[name], enumerable: true,
configurable: true, writable: true }
: null;
},
_define = Object.defineProperty || function(obj, name, desc) {
if ((desc.get || desc.set) && obj.__defineGetter__) {
if (desc.get)
obj.__defineGetter__(name, desc.get);
if (desc.set)
obj.__defineSetter__(name, desc.set);
} else {
obj[name] = desc.value;
}
return obj;
},
define = function(obj, name, desc) {
delete obj[name];
return _define(obj, name, desc);
};
function inject(dest, src, enumerable, beans, preserve) {
var beansNames = {};
function field(name, val) {
val = val || (val = describe(src, name))
&& (val.get ? val : val.value);
if (typeof val === 'string' && val[0] === '#')
val = dest[val.substring(1)] || val;
var isFunc = typeof val === 'function',
res = val,
prev = preserve || isFunc && !val.base
? (val && val.get ? name in dest : dest[name])
: null,
bean;
if (!preserve || !prev) {
if (isFunc && prev)
val.base = prev;
if (isFunc && beans !== false
&& (bean = name.match(/^([gs]et|is)(([A-Z])(.*))$/)))
beansNames[bean[3].toLowerCase() + bean[4]] = bean[2];
if (!res || isFunc || !res.get || typeof res.get !== 'function'
|| !Base.isPlainObject(res))
res = { value: res, writable: true };
if ((describe(dest, name)
|| { configurable: true }).configurable) {
res.configurable = true;
res.enumerable = enumerable;
}
define(dest, name, res);
}
}
if (src) {
for (var name in src) {
if (src.hasOwnProperty(name) && !hidden.test(name))
field(name);
}
for (var name in beansNames) {
var part = beansNames[name],
set = dest['set' + part],
get = dest['get' + part] || set && dest['is' + part];
if (get && (beans === true || get.length === 0))
field(name, { get: get, set: set });
}
}
return dest;
}
function each(obj, iter, bind) {
if (obj)
('length' in obj && !obj.getLength
&& typeof obj.length === 'number'
? forEach
: forIn).call(obj, iter, bind = bind || obj);
return bind;
}
function set(obj, props, exclude) {
for (var key in props)
if (props.hasOwnProperty(key) && !(exclude && exclude[key]))
obj[key] = props[key];
return obj;
}
return inject(function Base() {
for (var i = 0, l = arguments.length; i < l; i++)
set(this, arguments[i]);
}, {
inject: function(src) {
if (src) {
var statics = src.statics === true ? src : src.statics,
beans = src.beans,
preserve = src.preserve;
if (statics !== src)
inject(this.prototype, src, src.enumerable, beans, preserve);
inject(this, statics, true, beans, preserve);
}
for (var i = 1, l = arguments.length; i < l; i++)
this.inject(arguments[i]);
return this;
},
extend: function() {
var base = this,
ctor,
proto;
for (var i = 0, l = arguments.length; i < l; i++)
if (ctor = arguments[i].initialize)
break;
ctor = ctor || function() {
base.apply(this, arguments);
};
proto = ctor.prototype = create(this.prototype);
define(proto, 'constructor',
{ value: ctor, writable: true, configurable: true });
inject(ctor, this, true);
if (arguments.length)
this.inject.apply(ctor, arguments);
ctor.base = base;
return ctor;
}
}, true).inject({
inject: function() {
for (var i = 0, l = arguments.length; i < l; i++) {
var src = arguments[i];
if (src)
inject(this, src, src.enumerable, src.beans, src.preserve);
}
return this;
},
extend: function() {
var res = create(this);
return res.inject.apply(res, arguments);
},
each: function(iter, bind) {
return each(this, iter, bind);
},
set: function(props) {
return set(this, props);
},
clone: function() {
return new this.constructor(this);
},
statics: {
each: each,
create: create,
define: define,
describe: describe,
set: set,
clone: function(obj) {
return set(new obj.constructor(), obj);
},
isPlainObject: function(obj) {
var ctor = obj != null && obj.constructor;
return ctor && (ctor === Object || ctor === Base
|| ctor.name === 'Object');
},
pick: function(a, b) {
return a !== undefined ? a : b;
}
}
});
};
if (typeof module !== 'undefined')
module.exports = Base;
Base.inject({
toString: function() {
return this._id != null
? (this._class || 'Object') + (this._name
? " '" + this._name + "'"
: ' @' + this._id)
: '{ ' + Base.each(this, function(value, key) {
if (!/^_/.test(key)) {
var type = typeof value;
this.push(key + ': ' + (type === 'number'
? Formatter.instance.number(value)
: type === 'string' ? "'" + value + "'" : value));
}
}, []).join(', ') + ' }';
},
getClassName: function() {
return this._class || '';
},
exportJSON: function(options) {
return Base.exportJSON(this, options);
},
toJSON: function() {
return Base.serialize(this);
},
_set: function(props, exclude, dontCheck) {
if (props && (dontCheck || Base.isPlainObject(props))) {
var keys = Object.keys(props._filtering || props);
for (var i = 0, l = keys.length; i < l; i++) {
var key = keys[i];
if (!(exclude && exclude[key])) {
var value = props[key];
if (value !== undefined)
this[key] = value;
}
}
return true;
}
},
statics: {
exports: {
enumerable: true
},
extend: function extend() {
var res = extend.base.apply(this, arguments),
name = res.prototype._class;
if (name && !Base.exports[name])
Base.exports[name] = res;
return res;
},
equals: function(obj1, obj2) {
if (obj1 === obj2)
return true;
if (obj1 && obj1.equals)
return obj1.equals(obj2);
if (obj2 && obj2.equals)
return obj2.equals(obj1);
if (obj1 && obj2
&& typeof obj1 === 'object' && typeof obj2 === 'object') {
if (Array.isArray(obj1) && Array.isArray(obj2)) {
var length = obj1.length;
if (length !== obj2.length)
return false;
while (length--) {
if (!Base.equals(obj1[length], obj2[length]))
return false;
}
} else {
var keys = Object.keys(obj1),
length = keys.length;
if (length !== Object.keys(obj2).length)
return false;
while (length--) {
var key = keys[length];
if (!(obj2.hasOwnProperty(key)
&& Base.equals(obj1[key], obj2[key])))
return false;
}
}
return true;
}
return false;
},
read: function(list, start, options, length) {
if (this === Base) {
var value = this.peek(list, start);
list.__index++;
return value;
}
var proto = this.prototype,
readIndex = proto._readIndex,
index = start || readIndex && list.__index || 0;
if (!length)
length = list.length - index;
var obj = list[index];
if (obj instanceof this
|| options && options.readNull && obj == null && length <= 1) {
if (readIndex)
list.__index = index + 1;
return obj && options && options.clone ? obj.clone() : obj;
}
obj = Base.create(this.prototype);
if (readIndex)
obj.__read = true;
obj = obj.initialize.apply(obj, index > 0 || length < list.length
? Array.prototype.slice.call(list, index, index + length)
: list) || obj;
if (readIndex) {
list.__index = index + obj.__read;
obj.__read = undefined;
}
return obj;
},
peek: function(list, start) {
return list[list.__index = start || list.__index || 0];
},
remain: function(list) {
return list.length - (list.__index || 0);
},
readAll: function(list, start, options) {
var res = [],
entry;
for (var i = start || 0, l = list.length; i < l; i++) {
res.push(Array.isArray(entry = list[i])
? this.read(entry, 0, options)
: this.read(list, i, options, 1));
}
return res;
},
readNamed: function(list, name, start, options, length) {
var value = this.getNamed(list, name),
hasObject = value !== undefined;
if (hasObject) {
var filtered = list._filtered;
if (!filtered) {
filtered = list._filtered = Base.create(list[0]);
filtered._filtering = list[0];
}
filtered[name] = undefined;
}
return this.read(hasObject ? [value] : list, start, options, length);
},
getNamed: function(list, name) {
var arg = list[0];
if (list._hasObject === undefined)
list._hasObject = list.length === 1 && Base.isPlainObject(arg);
if (list._hasObject)
return name ? arg[name] : list._filtered || arg;
},
hasNamed: function(list, name) {
return !!this.getNamed(list, name);
},
isPlainValue: function(obj, asString) {
return this.isPlainObject(obj) || Array.isArray(obj)
|| asString && typeof obj === 'string';
},
serialize: function(obj, options, compact, dictionary) {
options = options || {};
var root = !dictionary,
res;
if (root) {
options.formatter = new Formatter(options.precision);
dictionary = {
length: 0,
definitions: {},
references: {},
add: function(item, create) {
var id = '#' + item._id,
ref = this.references[id];
if (!ref) {
this.length++;
var res = create.call(item),
name = item._class;
if (name && res[0] !== name)
res.unshift(name);
this.definitions[id] = res;
ref = this.references[id] = [id];
}
return ref;
}
};
}
if (obj && obj._serialize) {
res = obj._serialize(options, dictionary);
var name = obj._class;
if (name && !compact && !res._compact && res[0] !== name)
res.unshift(name);
} else if (Array.isArray(obj)) {
res = [];
for (var i = 0, l = obj.length; i < l; i++)
res[i] = Base.serialize(obj[i], options, compact,
dictionary);
if (compact)
res._compact = true;
} else if (Base.isPlainObject(obj)) {
res = {};
var keys = Object.keys(obj);
for (var i = 0, l = keys.length; i < l; i++) {
var key = keys[i];
res[key] = Base.serialize(obj[key], options, compact,
dictionary);
}
} else if (typeof obj === 'number') {
res = options.formatter.number(obj, options.precision);
} else {
res = obj;
}
return root && dictionary.length > 0
? [['dictionary', dictionary.definitions], res]
: res;
},
deserialize: function(json, create, _data, _isDictionary) {
var res = json,
isRoot = !_data;
_data = _data || {};
if (Array.isArray(json)) {
var type = json[0],
isDictionary = type === 'dictionary';
if (json.length == 1 && /^#/.test(type))
return _data.dictionary[type];
type = Base.exports[type];
res = [];
if (_isDictionary)
_data.dictionary = res;
for (var i = type ? 1 : 0, l = json.length; i < l; i++)
res.push(Base.deserialize(json[i], create, _data,
isDictionary));
if (type) {
var args = res;
if (create) {
res = create(type, args);
} else {
res = Base.create(type.prototype);
type.apply(res, args);
}
}
} else if (Base.isPlainObject(json)) {
res = {};
if (_isDictionary)
_data.dictionary = res;
for (var key in json)
res[key] = Base.deserialize(json[key], create, _data);
}
return isRoot && json && json.length && json[0][0] === 'dictionary'
? res[1]
: res;
},
exportJSON: function(obj, options) {
var json = Base.serialize(obj, options);
return options && options.asString === false
? json
: JSON.stringify(json);
},
importJSON: function(json, target) {
return Base.deserialize(
typeof json === 'string' ? JSON.parse(json) : json,
function(type, args) {
var obj = target && target.constructor === type
? target
: Base.create(type.prototype),
isTarget = obj === target;
if (args.length === 1 && obj instanceof Item
&& (isTarget || !(obj instanceof Layer))) {
var arg = args[0];
if (Base.isPlainObject(arg))
arg.insert = false;
}
type.apply(obj, args);
if (isTarget)
target = null;
return obj;
});
},
splice: function(list, items, index, remove) {
var amount = items && items.length,
append = index === undefined;
index = append ? list.length : index;
if (index > list.length)
index = list.length;
for (var i = 0; i < amount; i++)
items[i]._index = index + i;
if (append) {
list.push.apply(list, items);
return [];
} else {
var args = [index, remove];
if (items)
args.push.apply(args, items);
var removed = list.splice.apply(list, args);
for (var i = 0, l = removed.length; i < l; i++)
removed[i]._index = undefined;
for (var i = index + amount, l = list.length; i < l; i++)
list[i]._index = i;
return removed;
}
},
capitalize: function(str) {
return str.replace(/\b[a-z]/g, function(match) {
return match.toUpperCase();
});
},
camelize: function(str) {
return str.replace(/-(.)/g, function(all, chr) {
return chr.toUpperCase();
});
},
hyphenate: function(str) {
return str.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
}
}
});
var Emitter = {
on: function(type, func) {
if (typeof type !== 'string') {
Base.each(type, function(value, key) {
this.on(key, value);
}, this);
} else {
var types = this._eventTypes,
entry = types && types[type],
handlers = this._callbacks = this._callbacks || {};
handlers = handlers[type] = handlers[type] || [];
if (handlers.indexOf(func) === -1) {
handlers.push(func);
if (entry && entry.install && handlers.length === 1)
entry.install.call(this, type);
}
}
return this;
},
off: function(type, func) {
if (typeof type !== 'string') {
Base.each(type, function(value, key) {
this.off(key, value);
}, this);
return;
}
var types = this._eventTypes,
entry = types && types[type],
handlers = this._callbacks && this._callbacks[type],
index;
if (handlers) {
if (!func || (index = handlers.indexOf(func)) !== -1
&& handlers.length === 1) {
if (entry && entry.uninstall)
entry.uninstall.call(this, type);
delete this._callbacks[type];
} else if (index !== -1) {
handlers.splice(index, 1);
}
}
return this;
},
once: function(type, func) {
return this.on(type, function() {
func.apply(this, arguments);
this.off(type, func);
});
},
emit: function(type, event) {
var handlers = this._callbacks && this._callbacks[type];
if (!handlers)
return false;
var args = [].slice.call(arguments, 1);
handlers = handlers.slice();
for (var i = 0, l = handlers.length; i < l; i++) {
if (handlers[i].apply(this, args) === false) {
if (event && event.stop)
event.stop();
break;
}
}
return true;
},
responds: function(type) {
return !!(this._callbacks && this._callbacks[type]);
},
attach: '#on',
detach: '#off',
fire: '#emit',
_installEvents: function(install) {
var handlers = this._callbacks,
key = install ? 'install' : 'uninstall';
for (var type in handlers) {
if (handlers[type].length > 0) {
var types = this._eventTypes,
entry = types && types[type],
func = entry && entry[key];
if (func)
func.call(this, type);
}
}
},
statics: {
inject: function inject(src) {
var events = src._events;
if (events) {
var types = {};
Base.each(events, function(entry, key) {
var isString = typeof entry === 'string',
name = isString ? entry : key,
part = Base.capitalize(name),
type = name.substring(2).toLowerCase();
types[type] = isString ? {} : entry;
name = '_' + name;
src['get' + part] = function() {
return this[name];
};
src['set' + part] = function(func) {
var prev = this[name];
if (prev)
this.off(type, prev);
if (func)
this.on(type, func);
this[name] = func;
};
});
src._eventTypes = types;
}
return inject.base.apply(this, arguments);
}
}
};
var PaperScope = Base.extend({
_class: 'PaperScope',
initialize: function PaperScope() {
paper = this;
this.settings = new Base({
applyMatrix: true,
handleSize: 4,
hitTolerance: 0
});
this.project = null;
this.projects = [];
this.tools = [];
this.palettes = [];
this._id = PaperScope._id++;
PaperScope._scopes[this._id] = this;
var proto = PaperScope.prototype;
if (!this.support) {
var ctx = CanvasProvider.getContext(1, 1);
proto.support = {
nativeDash: 'setLineDash' in ctx || 'mozDash' in ctx,
nativeBlendModes: BlendMode.nativeModes
};
CanvasProvider.release(ctx);
}
if (!this.browser) {
var agent = navigator.userAgent.toLowerCase(),
platform = (/(win)/.exec(agent)
|| /(mac)/.exec(agent)
|| /(linux)/.exec(agent)
|| [])[0],
browser = proto.browser = { platform: platform };
if (platform)
browser[platform] = true;
agent.replace(
/(opera|chrome|safari|webkit|firefox|msie|trident|atom)\/?\s*([.\d]+)(?:.*version\/([.\d]+))?(?:.*rv\:([.\d]+))?/g,
function(all, n, v1, v2, rv) {
if (!browser.chrome) {
var v = n === 'opera' ? v2 : v1;
if (n === 'trident') {
v = rv;
n = 'msie';
}
browser.version = v;
browser.versionNumber = parseFloat(v);
browser.name = n;
browser[n] = true;
}
}
);
if (browser.chrome)
delete browser.webkit;
if (browser.atom)
delete browser.chrome;
}
},
version: "0.9.25",
getView: function() {
return this.project && this.project.getView();
},
getPaper: function() {
return this;
},
execute: function(code, url, options) {
paper.PaperScript.execute(code, this, url, options);
View.updateFocus();
},
install: function(scope) {
var that = this;
Base.each(['project', 'view', 'tool'], function(key) {
Base.define(scope, key, {
configurable: true,
get: function() {
return that[key];
}
});
});
for (var key in this)
if (!/^_/.test(key) && this[key])
scope[key] = this[key];
},
setup: function(element) {
paper = this;
this.project = new Project(element);
return this;
},
activate: function() {
paper = this;
},
clear: function() {
for (var i = this.projects.length - 1; i >= 0; i--)
this.projects[i].remove();
for (var i = this.tools.length - 1; i >= 0; i--)
this.tools[i].remove();
for (var i = this.palettes.length - 1; i >= 0; i--)
this.palettes[i].remove();
},
remove: function() {
this.clear();
delete PaperScope._scopes[this._id];
},
statics: new function() {
function handleAttribute(name) {
name += 'Attribute';
return function(el, attr) {
return el[name](attr) || el[name]('data-paper-' + attr);
};
}
return {
_scopes: {},
_id: 0,
get: function(id) {
return this._scopes[id] || null;
},
getAttribute: handleAttribute('get'),
hasAttribute: handleAttribute('has')
};
}
});
var PaperScopeItem = Base.extend(Emitter, {
initialize: function(activate) {
this._scope = paper;
this._index = this._scope[this._list].push(this) - 1;
if (activate || !this._scope[this._reference])
this.activate();
},
activate: function() {
if (!this._scope)
return false;
var prev = this._scope[this._reference];
if (prev && prev !== this)
prev.emit('deactivate');
this._scope[this._reference] = this;
this.emit('activate', prev);
return true;
},
isActive: function() {
return this._scope[this._reference] === this;
},
remove: function() {
if (this._index == null)
return false;
Base.splice(this._scope[this._list], null, this._index, 1);
if (this._scope[this._reference] == this)
this._scope[this._reference] = null;
this._scope = null;
return true;
}
});
var Formatter = Base.extend({
initialize: function(precision) {
this.precision = precision || 5;
this.multiplier = Math.pow(10, this.precision);
},
number: function(val) {
return Math.round(val * this.multiplier) / this.multiplier;
},
pair: function(val1, val2, separator) {
return this.number(val1) + (separator || ',') + this.number(val2);
},
point: function(val, separator) {
return this.number(val.x) + (separator || ',') + this.number(val.y);
},
size: function(val, separator) {
return this.number(val.width) + (separator || ',')
+ this.number(val.height);
},
rectangle: function(val, separator) {
return this.point(val, separator) + (separator || ',')
+ this.size(val, separator);
}
});
Formatter.instance = new Formatter();
var Numerical = new function() {
var abscissas = [
[ 0.5773502691896257645091488],
[0,0.7745966692414833770358531],
[ 0.3399810435848562648026658,0.8611363115940525752239465],
[0,0.5384693101056830910363144,0.9061798459386639927976269],
[ 0.2386191860831969086305017,0.6612093864662645136613996,0.9324695142031520278123016],
[0,0.4058451513773971669066064,0.7415311855993944398638648,0.9491079123427585245261897],
[ 0.1834346424956498049394761,0.5255324099163289858177390,0.7966664774136267395915539,0.9602898564975362316835609],
[0,0.3242534234038089290385380,0.6133714327005903973087020,0.8360311073266357942994298,0.9681602395076260898355762],
[ 0.1488743389816312108848260,0.4333953941292471907992659,0.6794095682990244062343274,0.8650633666889845107320967,0.9739065285171717200779640],
[0,0.2695431559523449723315320,0.5190961292068118159257257,0.7301520055740493240934163,0.8870625997680952990751578,0.9782286581460569928039380],
[ 0.1252334085114689154724414,0.3678314989981801937526915,0.5873179542866174472967024,0.7699026741943046870368938,0.9041172563704748566784659,0.9815606342467192506905491],
[0,0.2304583159551347940655281,0.4484927510364468528779129,0.6423493394403402206439846,0.8015780907333099127942065,0.9175983992229779652065478,0.9841830547185881494728294],
[ 0.1080549487073436620662447,0.3191123689278897604356718,0.5152486363581540919652907,0.6872929048116854701480198,0.8272013150697649931897947,0.9284348836635735173363911,0.9862838086968123388415973],
[0,0.2011940939974345223006283,0.3941513470775633698972074,0.5709721726085388475372267,0.7244177313601700474161861,0.8482065834104272162006483,0.9372733924007059043077589,0.9879925180204854284895657],
[ 0.0950125098376374401853193,0.2816035507792589132304605,0.4580167776572273863424194,0.6178762444026437484466718,0.7554044083550030338951012,0.8656312023878317438804679,0.9445750230732325760779884,0.9894009349916499325961542]
];
var weights = [
[1],
[0.8888888888888888888888889,0.5555555555555555555555556],
[0.6521451548625461426269361,0.3478548451374538573730639],
[0.5688888888888888888888889,0.4786286704993664680412915,0.2369268850561890875142640],
[0.4679139345726910473898703,0.3607615730481386075698335,0.1713244923791703450402961],
[0.4179591836734693877551020,0.3818300505051189449503698,0.2797053914892766679014678,0.1294849661688696932706114],
[0.3626837833783619829651504,0.3137066458778872873379622,0.2223810344533744705443560,0.1012285362903762591525314],
[0.3302393550012597631645251,0.3123470770400028400686304,0.2606106964029354623187429,0.1806481606948574040584720,0.0812743883615744119718922],
[0.2955242247147528701738930,0.2692667193099963550912269,0.2190863625159820439955349,0.1494513491505805931457763,0.0666713443086881375935688],
[0.2729250867779006307144835,0.2628045445102466621806889,0.2331937645919904799185237,0.1862902109277342514260976,0.1255803694649046246346943,0.0556685671161736664827537],
[0.2491470458134027850005624,0.2334925365383548087608499,0.2031674267230659217490645,0.1600783285433462263346525,0.1069393259953184309602547,0.0471753363865118271946160],
[0.2325515532308739101945895,0.2262831802628972384120902,0.2078160475368885023125232,0.1781459807619457382800467,0.1388735102197872384636018,0.0921214998377284479144218,0.0404840047653158795200216],
[0.2152638534631577901958764,0.2051984637212956039659241,0.1855383974779378137417166,0.1572031671581935345696019,0.1215185706879031846894148,0.0801580871597602098056333,0.0351194603317518630318329],
[0.2025782419255612728806202,0.1984314853271115764561183,0.1861610000155622110268006,0.1662692058169939335532009,0.1395706779261543144478048,0.1071592204671719350118695,0.0703660474881081247092674,0.0307532419961172683546284],
[0.1894506104550684962853967,0.1826034150449235888667637,0.1691565193950025381893121,0.1495959888165767320815017,0.1246289712555338720524763,0.0951585116824927848099251,0.0622535239386478928628438,0.0271524594117540948517806]
];
var abs = Math.abs,
sqrt = Math.sqrt,
pow = Math.pow,
EPSILON = 1e-12,
MACHINE_EPSILON = 1.12e-16;
function clip(value, min, max) {
return value < min ? min : value > max ? max : value;
}
return {
TOLERANCE: 1e-6,
EPSILON: EPSILON,
MACHINE_EPSILON: MACHINE_EPSILON,
CURVETIME_EPSILON: 4e-7,
GEOMETRIC_EPSILON: 2e-7,
WINDING_EPSILON: 2e-7,
TRIGONOMETRIC_EPSILON: 1e-7,
CLIPPING_EPSILON: 1e-7,
KAPPA: 4 * (sqrt(2) - 1) / 3,
isZero: function(val) {
return val >= -EPSILON && val <= EPSILON;
},
integrate: function(f, a, b, n) {
var x = abscissas[n - 2],
w = weights[n - 2],
A = (b - a) * 0.5,
B = A + a,
i = 0,
m = (n + 1) >> 1,
sum = n & 1 ? w[i++] * f(B) : 0;
while (i < m) {
var Ax = A * x[i];
sum += w[i++] * (f(B + Ax) + f(B - Ax));
}
return A * sum;
},
findRoot: function(f, df, x, a, b, n, tolerance) {
for (var i = 0; i < n; i++) {
var fx = f(x),
dx = fx / df(x),
nx = x - dx;
if (abs(dx) < tolerance)
return nx;
if (fx > 0) {
b = x;
x = nx <= a ? (a + b) * 0.5 : nx;
} else {
a = x;
x = nx >= b ? (a + b) * 0.5 : nx;
}
}
return x;
},
solveQuadratic: function(a, b, c, roots, min, max) {
var count = 0,
eMin = min - EPSILON,
eMax = max + EPSILON,
x1, x2 = Infinity,
B = b,
D;
b /= -2;
D = b * b - a * c;
if (D !== 0 && abs(D) < MACHINE_EPSILON) {
var gmC = pow(abs(a * b * c), 1 / 3);
if (gmC < 1e-8) {
var mult = pow(10,
abs(Math.floor(Math.log(gmC) * Math.LOG10E)));
if (!isFinite(mult))
mult = 0;
a *= mult;
b *= mult;
c *= mult;
D = b * b - a * c;
}
}
if (abs(a) < EPSILON) {
if (abs(B) < EPSILON)
return abs(c) < EPSILON ? -1 : 0;
x1 = -c / B;
} else if (D >= -MACHINE_EPSILON) {
var Q = D < 0 ? 0 : sqrt(D),
R = b + (b < 0 ? -Q : Q);
if (R === 0) {
x1 = c / a;
x2 = -x1;
} else {
x1 = R / a;
x2 = c / R;
}
}
if (isFinite(x1) && (min == null || x1 > eMin && x1 < eMax))
roots[count++] = min == null ? x1 : clip(x1, min, max);
if (x2 !== x1
&& isFinite(x2) && (min == null || x2 > eMin && x2 < eMax))
roots[count++] = min == null ? x2 : clip(x2, min, max);
return count;
},
solveCubic: function(a, b, c, d, roots, min, max) {
var count = 0,
x, b1, c2;
if (abs(a) < EPSILON) {
a = b;
b1 = c;
c2 = d;
x = Infinity;
} else if (abs(d) < EPSILON) {
b1 = b;
c2 = c;
x = 0;
} else {
var ec = 1 + MACHINE_EPSILON,
x0, q, qd, t, r, s, tmp;
x = -(b / a) / 3;
tmp = a * x,
b1 = tmp + b,
c2 = b1 * x + c,
qd = (tmp + b1) * x + c2,
q = c2 * x + d;
t = q /a;
r = pow(abs(t), 1/3);
s = t < 0 ? -1 : 1;
t = -qd / a;
r = t > 0 ? 1.3247179572 * Math.max(r, sqrt(t)) : r;
x0 = x - s * r;
if (x0 !== x) {
do {
x = x0;
tmp = a * x,
b1 = tmp + b,
c2 = b1 * x + c,
qd = (tmp + b1) * x + c2,
q = c2 * x + d;
x0 = qd === 0 ? x : x - q / qd / ec;
if (x0 === x) {
x = x0;
break;
}
} while (s * x0 > s * x);
if (abs(a) * x * x > abs(d / x)) {
c2 = -d / x;
b1 = (c2 - c) / x;
}
}
}
var count = Numerical.solveQuadratic(a, b1, c2, roots, min, max);
if (isFinite(x) && (count === 0 || x !== roots[count - 1])
&& (min == null || x > min - EPSILON && x < max + EPSILON))
roots[count++] = min == null ? x : clip(x, min, max);
return count;
}
};
};
var UID = {
_id: 1,
_pools: {},
get: function(ctor) {
if (ctor) {
var name = ctor._class,
pool = this._pools[name];
if (!pool)
pool = this._pools[name] = { _id: 1 };
return pool._id++;
} else {
return this._id++;
}
}
};
var Point = Base.extend({
_class: 'Point',
_readIndex: true,
initialize: function Point(arg0, arg1) {
var type = typeof arg0;
if (type === 'number') {
var hasY = typeof arg1 === 'number';
this.x = arg0;
this.y = hasY ? arg1 : arg0;
if (this.__read)
this.__read = hasY ? 2 : 1;
} else if (type === 'undefined' || arg0 === null) {
this.x = this.y = 0;
if (this.__read)
this.__read = arg0 === null ? 1 : 0;
} else {
if (Array.isArray(arg0)) {
this.x = arg0[0];
this.y = arg0.length > 1 ? arg0[1] : arg0[0];
} else if (arg0.x != null) {
this.x = arg0.x;
this.y = arg0.y;
} else if (arg0.width != null) {
this.x = arg0.width;
this.y = arg0.height;
} else if (arg0.angle != null) {
this.x = arg0.length;
this.y = 0;
this.setAngle(arg0.angle);
} else {
this.x = this.y = 0;
if (this.__read)
this.__read = 0;
}
if (this.__read)
this.__read = 1;
}
},
set: function(x, y) {
this.x = x;
this.y = y;
return this;
},
equals: function(point) {
return this === point || point
&& (this.x === point.x && this.y === point.y
|| Array.isArray(point)
&& this.x === point[0] && this.y === point[1])
|| false;
},
clone: function() {
return new Point(this.x, this.y);
},
toString: function() {
var f = Formatter.instance;
return '{ x: ' + f.number(this.x) + ', y: ' + f.number(this.y) + ' }';
},
_serialize: function(options) {
var f = options.formatter;
return [f.number(this.x), f.number(this.y)];
},
getLength: function() {
return Math.sqrt(this.x * this.x + this.y * this.y);
},
setLength: function(length) {
if (this.isZero()) {
var angle = this._angle || 0;
this.set(
Math.cos(angle) * length,
Math.sin(angle) * length
);
} else {
var scale = length / this.getLength();
if (Numerical.isZero(scale))
this.getAngle();
this.set(
this.x * scale,
this.y * scale
);
}
},
getAngle: function() {
return this.getAngleInRadians.apply(this, arguments) * 180 / Math.PI;
},
setAngle: function(angle) {
this.setAngleInRadians.call(this, angle * Math.PI / 180);
},
getAngleInDegrees: '#getAngle',
setAngleInDegrees: '#setAngle',
getAngleInRadians: function() {
if (!arguments.length) {
return this.isZero()
? this._angle || 0
: this._angle = Math.atan2(this.y, this.x);
} else {
var point = Point.read(arguments),
div = this.getLength() * point.getLength();
if (Numerical.isZero(div)) {
return NaN;
} else {
var a = this.dot(point) / div;
return Math.acos(a < -1 ? -1 : a > 1 ? 1 : a);
}
}
},
setAngleInRadians: function(angle) {
this._angle = angle;
if (!this.isZero()) {
var length = this.getLength();
this.set(
Math.cos(angle) * length,
Math.sin(angle) * length
);
}
},
getQuadrant: function() {
return this.x >= 0 ? this.y >= 0 ? 1 : 4 : this.y >= 0 ? 2 : 3;
}
}, {
beans: false,
getDirectedAngle: function() {
var point = Point.read(arguments);
return Math.atan2(this.cross(point), this.dot(point)) * 180 / Math.PI;
},
getDistance: function() {
var point = Point.read(arguments),
x = point.x - this.x,
y = point.y - this.y,
d = x * x + y * y,
squared = Base.read(arguments);
return squared ? d : Math.sqrt(d);
},
normalize: function(length) {
if (length === undefined)
length = 1;
var current = this.getLength(),
scale = current !== 0 ? length / current : 0,
point = new Point(this.x * scale, this.y * scale);
if (scale >= 0)
point._angle = this._angle;
return point;
},
rotate: function(angle, center) {
if (angle === 0)
return this.clone();
angle = angle * Math.PI / 180;
var point = center ? this.subtract(center) : this,
sin = Math.sin(angle),
cos = Math.cos(angle);
point = new Point(
point.x * cos - point.y * sin,
point.x * sin + point.y * cos
);
return center ? point.add(center) : point;
},
transform: function(matrix) {
return matrix ? matrix._transformPoint(this) : this;
},
add: function() {
var point = Point.read(arguments);
return new Point(this.x + point.x, this.y + point.y);
},
subtract: function() {
var point = Point.read(arguments);
return new Point(this.x - point.x, this.y - point.y);
},
multiply: function() {
var point = Point.read(arguments);
return new Point(this.x * point.x, this.y * point.y);
},
divide: function() {
var point = Point.read(arguments);
return new Point(this.x / point.x, this.y / point.y);
},
modulo: function() {
var point = Point.read(arguments);
return new Point(this.x % point.x, this.y % point.y);
},
negate: function() {
return new Point(-this.x, -this.y);
},
isInside: function() {
return Rectangle.read(arguments).contains(this);
},
isClose: function() {
var point = Point.read(arguments),
tolerance = Base.read(arguments);
return this.getDistance(point) < tolerance;
},
isCollinear: function() {
var point = Point.read(arguments);
return Point.isCollinear(this.x, this.y, point.x, point.y);
},
isColinear: '#isCollinear',
isOrthogonal: function() {
var point = Point.read(arguments);
return Point.isOrthogonal(this.x, this.y, point.x, point.y);
},
isZero: function() {
return Numerical.isZero(this.x) && Numerical.isZero(this.y);
},
isNaN: function() {
return isNaN(this.x) || isNaN(this.y);
},
dot: function() {
var point = Point.read(arguments);
return this.x * point.x + this.y * point.y;
},
cross: function() {
var point = Point.read(arguments);
return this.x * point.y - this.y * point.x;
},
project: function() {
var point = Point.read(arguments),
scale = point.isZero() ? 0 : this.dot(point) / point.dot(point);
return new Point(
point.x * scale,
point.y * scale
);
},
statics: {
min: function() {
var point1 = Point.read(arguments),
point2 = Point.read(arguments);
return new Point(
Math.min(point1.x, point2.x),
Math.min(point1.y, point2.y)
);
},
max: function() {
var point1 = Point.read(arguments),
point2 = Point.read(arguments);
return new Point(
Math.max(point1.x, point2.x),
Math.max(point1.y, point2.y)
);
},
random: function() {
return new Point(Math.random(), Math.random());
},
isCollinear: function(x1, y1, x2, y2) {
return Math.abs(x1 * y2 - y1 * x2)
<= Math.sqrt((x1 * x1 + y1 * y1) * (x2 * x2 + y2 * y2))
* 1e-7;
},
isOrthogonal: function(x1, y1, x2, y2) {
return Math.abs(x1 * x2 + y1 * y2)
<= Math.sqrt((x1 * x1 + y1 * y1) * (x2 * x2 + y2 * y2))
* 1e-7;
}
}
}, Base.each(['round', 'ceil', 'floor', 'abs'], function(name) {
var op = Math[name];
this[name] = function() {
return new Point(op(this.x), op(this.y));
};
}, {}));
var LinkedPoint = Point.extend({
initialize: function Point(x, y, owner, setter) {
this._x = x;
this._y = y;
this._owner = owner;
this._setter = setter;
},
set: function(x, y, _dontNotify) {
this._x = x;
this._y = y;
if (!_dontNotify)
this._owner[this._setter](this);
return this;
},
getX: function() {
return this._x;
},
setX: function(x) {
this._x = x;
this._owner[this._setter](this);
},
getY: function() {
return this._y;
},
setY: function(y) {
this._y = y;
this._owner[this._setter](this);
}
});
var Size = Base.extend({
_class: 'Size',
_readIndex: true,
initialize: function Size(arg0, arg1) {
var type = typeof arg0;
if (type === 'number') {
var hasHeight = typeof arg1 === 'number';
this.width = arg0;
this.height = hasHeight ? arg1 : arg0;
if (this.__read)
this.__read = hasHeight ? 2 : 1;
} else if (type === 'undefined' || arg0 === null) {
this.width = this.height = 0;
if (this.__read)
this.__read = arg0 === null ? 1 : 0;
} else {
if (Array.isArray(arg0)) {
this.width = arg0[0];
this.height = arg0.length > 1 ? arg0[1] : arg0[0];
} else if (arg0.width != null) {
this.width = arg0.width;
this.height = arg0.height;
} else if (arg0.x != null) {
this.width = arg0.x;
this.height = arg0.y;
} else {
this.width = this.height = 0;
if (this.__read)
this.__read = 0;
}
if (this.__read)
this.__read = 1;
}
},
set: function(width, height) {
this.width = width;
this.height = height;
return this;
},
equals: function(size) {
return size === this || size && (this.width === size.width
&& this.height === size.height
|| Array.isArray(size) && this.width === size[0]
&& this.height === size[1]) || false;
},
clone: function() {
return new Size(this.width, this.height);
},
toString: function() {
var f = Formatter.instance;
return '{ width: ' + f.number(this.width)
+ ', height: ' + f.number(this.height) + ' }';
},
_serialize: function(options) {
var f = options.formatter;
return [f.number(this.width),
f.number(this.height)];
},
add: function() {
var size = Size.read(arguments);
return new Size(this.width + size.width, this.height + size.height);
},
subtract: function() {
var size = Size.read(arguments);
return new Size(this.width - size.width, this.height - size.height);
},
multiply: function() {
var size = Size.read(arguments);
return new Size(this.width * size.width, this.height * size.height);
},
divide: function() {
var size = Size.read(arguments);
return new Size(this.width / size.width, this.height / size.height);
},
modulo: function() {
var size = Size.read(arguments);
return new Size(this.width % size.width, this.height % size.height);
},
negate: function() {
return new Size(-this.width, -this.height);
},
isZero: function() {
return Numerical.isZero(this.width) && Numerical.isZero(this.height);
},
isNaN: function() {
return isNaN(this.width) || isNaN(this.height);
},
statics: {
min: function(size1, size2) {
return new Size(
Math.min(size1.width, size2.width),
Math.min(size1.height, size2.height));
},
max: function(size1, size2) {
return new Size(
Math.max(size1.width, size2.width),
Math.max(size1.height, size2.height));
},
random: function() {
return new Size(Math.random(), Math.random());
}
}
}, Base.each(['round', 'ceil', 'floor', 'abs'], function(name) {
var op = Math[name];
this[name] = function() {
return new Size(op(this.width), op(this.height));
};
}, {}));
var LinkedSize = Size.extend({
initialize: function Size(width, height, owner, setter) {
this._width = width;
this._height = height;
this._owner = owner;
this._setter = setter;
},
set: function(width, height, _dontNotify) {
this._width = width;
this._height = height;
if (!_dontNotify)
this._owner[this._setter](this);
return this;
},
getWidth: function() {
return this._width;
},
setWidth: function(width) {
this._width = width;
this._owner[this._setter](this);
},
getHeight: function() {
return this._height;
},
setHeight: function(height) {
this._height = height;
this._owner[this._setter](this);
}
});
var Rectangle = Base.extend({
_class: 'Rectangle',
_readIndex: true,
beans: true,
initialize: function Rectangle(arg0, arg1, arg2, arg3) {
var type = typeof arg0,
read = 0;
if (type === 'number') {
this.x = arg0;
this.y = arg1;
this.width = arg2;
this.height = arg3;
read = 4;
} else if (type === 'undefined' || arg0 === null) {
this.x = this.y = this.width = this.height = 0;
read = arg0 === null ? 1 : 0;
} else if (arguments.length === 1) {
if (Array.isArray(arg0)) {
this.x = arg0[0];
this.y = arg0[1];
this.width = arg0[2];
this.height = arg0[3];
read = 1;
} else if (arg0.x !== undefined || arg0.width !== undefined) {
this.x = arg0.x || 0;
this.y = arg0.y || 0;
this.width = arg0.width || 0;
this.height = arg0.height || 0;
read = 1;
} else if (arg0.from === undefined && arg0.to === undefined) {
this.x = this.y = this.width = this.height = 0;
this._set(arg0);
read = 1;
}
}
if (!read) {
var point = Point.readNamed(arguments, 'from'),
next = Base.peek(arguments);
this.x = point.x;
this.y = point.y;
if (next && next.x !== undefined || Base.hasNamed(arguments, 'to')) {
var to = Point.readNamed(arguments, 'to');
this.width = to.x - point.x;
this.height = to.y - point.y;
if (this.width < 0) {
this.x = to.x;
this.width = -this.width;
}
if (this.height < 0) {
this.y = to.y;
this.height = -this.height;
}
} else {
var size = Size.read(arguments);
this.width = size.width;
this.height = size.height;
}
read = arguments.__index;
}
if (this.__read)
this.__read = read;
},
set: function(x, y, width, height) {
this.x = x;
this.y = y;
this.width = width;
this.height = height;
return this;
},
clone: function() {
return new Rectangle(this.x, this.y, this.width, this.height);
},
equals: function(rect) {
var rt = Base.isPlainValue(rect)
? Rectangle.read(arguments)
: rect;
return rt === this
|| rt && this.x === rt.x && this.y === rt.y
&& this.width === rt.width && this.height === rt.height
|| false;
},
toString: function() {
var f = Formatter.instance;
return '{ x: ' + f.number(this.x)
+ ', y: ' + f.number(this.y)
+ ', width: ' + f.number(this.width)
+ ', height: ' + f.number(this.height)
+ ' }';
},
_serialize: function(options) {
var f = options.formatter;
return [f.number(this.x),
f.number(this.y),
f.number(this.width),
f.number(this.height)];
},
getPoint: function(_dontLink) {
var ctor = _dontLink ? Point : LinkedPoint;
return new ctor(this.x, this.y, this, 'setPoint');
},
setPoint: function() {
var point = Point.read(arguments);
this.x = point.x;
this.y = point.y;
},
getSize: function(_dontLink) {
var ctor = _dontLink ? Size : LinkedSize;
return new ctor(this.width, this.height, this, 'setSize');
},
setSize: function() {
var size = Size.read(arguments);
if (this._fixX)
this.x += (this.width - size.width) * this._fixX;
if (this._fixY)
this.y += (this.height - size.height) * this._fixY;
this.width = size.width;
this.height = size.height;
this._fixW = 1;
this._fixH = 1;
},
getLeft: function() {
return this.x;
},
setLeft: function(left) {
if (!this._fixW)
this.width -= left - this.x;
this.x = left;
this._fixX = 0;
},
getTop: function() {
return this.y;
},
setTop: function(top) {
if (!this._fixH)
this.height -= top - this.y;
this.y = top;
this._fixY = 0;
},
getRight: function() {
return this.x + this.width;
},
setRight: function(right) {
if (this._fixX !== undefined && this._fixX !== 1)
this._fixW = 0;
if (this._fixW)
this.x = right - this.width;
else
this.width = right - this.x;
this._fixX = 1;
},
getBottom: function() {
return this.y + this.height;
},
setBottom: function(bottom) {
if (this._fixY !== undefined && this._fixY !== 1)
this._fixH = 0;
if (this._fixH)
this.y = bottom - this.height;
else
this.height = bottom - this.y;
this._fixY = 1;
},
getCenterX: function() {
return this.x + this.width * 0.5;
},
setCenterX: function(x) {
this.x = x - this.width * 0.5;
this._fixX = 0.5;
},
getCenterY: function() {
return this.y + this.height * 0.5;
},
setCenterY: function(y) {
this.y = y - this.height * 0.5;
this._fixY = 0.5;
},
getCenter: function(_dontLink) {
var ctor = _dontLink ? Point : LinkedPoint;
return new ctor(this.getCenterX(), this.getCenterY(), this, 'setCenter');
},
setCenter: function() {
var point = Point.read(arguments);
this.setCenterX(point.x);
this.setCenterY(point.y);
return this;
},
getArea: function() {
return this.width * this.height;
},
isEmpty: function() {
return this.width === 0 || this.height === 0;
},
contains: function(arg) {
return arg && arg.width !== undefined
|| (Array.isArray(arg) ? arg : arguments).length == 4
? this._containsRectangle(Rectangle.read(arguments))
: this._containsPoint(Point.read(arguments));
},
_containsPoint: function(point) {
var x = point.x,
y = point.y;
return x >= this.x && y >= this.y
&& x <= this.x + this.width
&& y <= this.y + this.height;
},
_containsRectangle: function(rect) {
var x = rect.x,
y = rect.y;
return x >= this.x && y >= this.y
&& x + rect.width <= this.x + this.width
&& y + rect.height <= this.y + this.height;
},
intersects: function() {
var rect = Rectangle.read(arguments);
return rect.x + rect.width > this.x
&& rect.y + rect.height > this.y
&& rect.x < this.x + this.width
&& rect.y < this.y + this.height;
},
touches: function() {
var rect = Rectangle.read(arguments);
return rect.x + rect.width >= this.x
&& rect.y + rect.height >= this.y
&& rect.x <= this.x + this.width
&& rect.y <= this.y + this.height;
},
intersect: function() {
var rect = Rectangle.read(arguments),
x1 = Math.max(this.x, rect.x),
y1 = Math.max(this.y, rect.y),
x2 = Math.min(this.x + this.width, rect.x + rect.width),
y2 = Math.min(this.y + this.height, rect.y + rect.height);
return new Rectangle(x1, y1, x2 - x1, y2 - y1);
},
unite: function() {
var rect = Rectangle.read(arguments),
x1 = Math.min(this.x, rect.x),
y1 = Math.min(this.y, rect.y),
x2 = Math.max(this.x + this.width, rect.x + rect.width),
y2 = Math.max(this.y + this.height, rect.y + rect.height);
return new Rectangle(x1, y1, x2 - x1, y2 - y1);
},
include: function() {
var point = Point.read(arguments);
var x1 = Math.min(this.x, point.x),
y1 = Math.min(this.y, point.y),
x2 = Math.max(this.x + this.width, point.x),
y2 = Math.max(this.y + this.height, point.y);
return new Rectangle(x1, y1, x2 - x1, y2 - y1);
},
expand: function() {
var amount = Size.read(arguments),
hor = amount.width,
ver = amount.height;
return new Rectangle(this.x - hor / 2, this.y - ver / 2,
this.width + hor, this.height + ver);
},
scale: function(hor, ver) {
return this.expand(this.width * hor - this.width,
this.height * (ver === undefined ? hor : ver) - this.height);
}
}, Base.each([
['Top', 'Left'], ['Top', 'Right'],
['Bottom', 'Left'], ['Bottom', 'Right'],
['Left', 'Center'], ['Top', 'Center'],
['Right', 'Center'], ['Bottom', 'Center']
],
function(parts, index) {
var part = parts.join('');
var xFirst = /^[RL]/.test(part);
if (index >= 4)
parts[1] += xFirst ? 'Y' : 'X';
var x = parts[xFirst ? 0 : 1],
y = parts[xFirst ? 1 : 0],
getX = 'get' + x,
getY = 'get' + y,
setX = 'set' + x,
setY = 'set' + y,
get = 'get' + part,
set = 'set' + part;
this[get] = function(_dontLink) {
var ctor = _dontLink ? Point : LinkedPoint;
return new ctor(this[getX](), this[getY](), this, set);
};
this[set] = function() {
var point = Point.read(arguments);
this[setX](point.x);
this[setY](point.y);
};
}, {
beans: true
}
));
var LinkedRectangle = Rectangle.extend({
initialize: function Rectangle(x, y, width, height, owner, setter) {
this.set(x, y, width, height, true);
this._owner = owner;
this._setter = setter;
},
set: function(x, y, width, height, _dontNotify) {
this._x = x;
this._y = y;
this._width = width;
this._height = height;
if (!_dontNotify)
this._owner[this._setter](this);
return this;
}
},
new function() {
var proto = Rectangle.prototype;
return Base.each(['x', 'y', 'width', 'height'], function(key) {
var part = Base.capitalize(key);
var internal = '_' + key;
this['get' + part] = function() {
return this[internal];
};
this['set' + part] = function(value) {
this[internal] = value;
if (!this._dontNotify)
this._owner[this._setter](this);
};
}, Base.each(['Point', 'Size', 'Center',
'Left', 'Top', 'Right', 'Bottom', 'CenterX', 'CenterY',
'TopLeft', 'TopRight', 'BottomLeft', 'BottomRight',
'LeftCenter', 'TopCenter', 'RightCenter', 'BottomCenter'],
function(key) {
var name = 'set' + key;
this[name] = function() {
this._dontNotify = true;
proto[name].apply(this, arguments);
this._dontNotify = false;
this._owner[this._setter](this);
};
}, {
isSelected: function() {
return this._owner._boundsSelected;
},
setSelected: function(selected) {
var owner = this._owner;
if (owner.setSelected) {
owner._boundsSelected = selected;
owner.setSelected(selected || owner._selectedSegmentState > 0);
}
}
})
);
});
var Matrix = Base.extend({
_class: 'Matrix',
initialize: function Matrix(arg) {
var count = arguments.length,
ok = true;
if (count === 6) {
this.set.apply(this, arguments);
} else if (count === 1) {
if (arg instanceof Matrix) {
this.set(arg._a, arg._c, arg._b, arg._d, arg._tx, arg._ty);
} else if (Array.isArray(arg)) {
this.set.apply(this, arg);
} else {
ok = false;
}
} else if (count === 0) {
this.reset();
} else {
ok = false;
}
if (!ok)
throw new Error('Unsupported matrix parameters');
},
set: function(a, c, b, d, tx, ty, _dontNotify) {
this._a = a;
this._c = c;
this._b = b;
this._d = d;
this._tx = tx;
this._ty = ty;
if (!_dontNotify)
this._changed();
return this;
},
_serialize: function(options) {
return Base.serialize(this.getValues(), options);
},
_changed: function() {
var owner = this._owner;
if (owner) {
if (owner._applyMatrix) {
owner.transform(null, true);
} else {
owner._changed(9);
}
}
},
clone: function() {
return new Matrix(this._a, this._c, this._b, this._d,
this._tx, this._ty);
},
equals: function(mx) {
return mx === this || mx && this._a === mx._a && this._b === mx._b
&& this._c === mx._c && this._d === mx._d
&& this._tx === mx._tx && this._ty === mx._ty
|| false;
},
toString: function() {
var f = Formatter.instance;
return '[[' + [f.number(this._a), f.number(this._b),
f.number(this._tx)].join(', ') + '], ['
+ [f.number(this._c), f.number(this._d),
f.number(this._ty)].join(', ') + ']]';
},
reset: function(_dontNotify) {
this._a = this._d = 1;
this._c = this._b = this._tx = this._ty = 0;
if (!_dontNotify)
this._changed();
return this;
},
apply: function(recursively, _setApplyMatrix) {
var owner = this._owner;
if (owner) {
owner.transform(null, true, Base.pick(recursively, true),
_setApplyMatrix);
return this.isIdentity();
}
return false;
},
translate: function() {
var point = Point.read(arguments),
x = point.x,
y = point.y;
this._tx += x * this._a + y * this._b;
this._ty += x * this._c + y * this._d;
this._changed();
return this;
},
scale: function() {
var scale = Point.read(arguments),
center = Point.read(arguments, 0, { readNull: true });
if (center)
this.translate(center);
this._a *= scale.x;
this._c *= scale.x;
this._b *= scale.y;
this._d *= scale.y;
if (center)
this.translate(center.negate());
this._changed();
return this;
},
rotate: function(angle ) {
angle *= Math.PI / 180;
var center = Point.read(arguments, 1),
x = center.x,
y = center.y,
cos = Math.cos(angle),
sin = Math.sin(angle),
tx = x - x * cos + y * sin,
ty = y - x * sin - y * cos,
a = this._a,
b = this._b,
c = this._c,
d = this._d;
this._a = cos * a + sin * b;
this._b = -sin * a + cos * b;
this._c = cos * c + sin * d;
this._d = -sin * c + cos * d;
this._tx += tx * a + ty * b;
this._ty += tx * c + ty * d;
this._changed();
return this;
},
shear: function() {
var shear = Point.read(arguments),
center = Point.read(arguments, 0, { readNull: true });
if (center)
this.translate(center);
var a = this._a,
c = this._c;
this._a += shear.y * this._b;
this._c += shear.y * this._d;
this._b += shear.x * a;
this._d += shear.x * c;
if (center)
this.translate(center.negate());
this._changed();
return this;
},
skew: function() {
var skew = Point.read(arguments),
center = Point.read(arguments, 0, { readNull: true }),
toRadians = Math.PI / 180,
shear = new Point(Math.tan(skew.x * toRadians),
Math.tan(skew.y * toRadians));
return this.shear(shear, center);
},
concatenate: function(mx) {
var a1 = this._a,
b1 = this._b,
c1 = this._c,
d1 = this._d,
a2 = mx._a,
b2 = mx._b,
c2 = mx._c,
d2 = mx._d,
tx2 = mx._tx,
ty2 = mx._ty;
this._a = a2 * a1 + c2 * b1;
this._b = b2 * a1 + d2 * b1;
this._c = a2 * c1 + c2 * d1;
this._d = b2 * c1 + d2 * d1;
this._tx += tx2 * a1 + ty2 * b1;
this._ty += tx2 * c1 + ty2 * d1;
this._changed();
return this;
},
preConcatenate: function(mx) {
var a1 = this._a,
b1 = this._b,
c1 = this._c,
d1 = this._d,
tx1 = this._tx,
ty1 = this._ty,
a2 = mx._a,
b2 = mx._b,
c2 = mx._c,
d2 = mx._d,
tx2 = mx._tx,
ty2 = mx._ty;
this._a = a2 * a1 + b2 * c1;
this._b = a2 * b1 + b2 * d1;
this._c = c2 * a1 + d2 * c1;
this._d = c2 * b1 + d2 * d1;
this._tx = a2 * tx1 + b2 * ty1 + tx2;
this._ty = c2 * tx1 + d2 * ty1 + ty2;
this._changed();
return this;
},
chain: function(mx) {
var a1 = this._a,
b1 = this._b,
c1 = this._c,
d1 = this._d,
tx1 = this._tx,
ty1 = this._ty,
a2 = mx._a,
b2 = mx._b,
c2 = mx._c,
d2 = mx._d,
tx2 = mx._tx,
ty2 = mx._ty;
return new Matrix(
a2 * a1 + c2 * b1,
a2 * c1 + c2 * d1,
b2 * a1 + d2 * b1,
b2 * c1 + d2 * d1,
tx1 + tx2 * a1 + ty2 * b1,
ty1 + tx2 * c1 + ty2 * d1);
},
isIdentity: function() {
return this._a === 1 && this._c === 0 && this._b === 0 && this._d === 1
&& this._tx === 0 && this._ty === 0;
},
orNullIfIdentity: function() {
return this.isIdentity() ? null : this;
},
isInvertible: function() {
return !!this._getDeterminant();
},
isSingular: function() {
return !this._getDeterminant();
},
transform: function( src, dst, count) {
return arguments.length < 3
? this._transformPoint(Point.read(arguments))
: this._transformCoordinates(src, dst, count);
},
_transformPoint: function(point, dest, _dontNotify) {
var x = point.x,
y = point.y;
if (!dest)
dest = new Point();
return dest.set(
x * this._a + y * this._b + this._tx,
x * this._c + y * this._d + this._ty,
_dontNotify
);
},
_transformCoordinates: function(src, dst, count) {
var i = 0,
j = 0,
max = 2 * count;
while (i < max) {
var x = src[i++],
y = src[i++];
dst[j++] = x * this._a + y * this._b + this._tx;
dst[j++] = x * this._c + y * this._d + this._ty;
}
return dst;
},
_transformCorners: function(rect) {
var x1 = rect.x,
y1 = rect.y,
x2 = x1 + rect.width,
y2 = y1 + rect.height,
coords = [ x1, y1, x2, y1, x2, y2, x1, y2 ];
return this._transformCoordinates(coords, coords, 4);
},
_transformBounds: function(bounds, dest, _dontNotify) {
var coords = this._transformCorners(bounds),
min = coords.slice(0, 2),
max = min.slice();
for (var i = 2; i < 8; i++) {
var val = coords[i],
j = i & 1;
if (val < min[j])
min[j] = val;
else if (val > max[j])
max[j] = val;
}
if (!dest)
dest = new Rectangle();
return dest.set(min[0], min[1], max[0] - min[0], max[1] - min[1],
_dontNotify);
},
inverseTransform: function() {
return this._inverseTransform(Point.read(arguments));
},
_getDeterminant: function() {
var det = this._a * this._d - this._b * this._c;
return isFinite(det) && !Numerical.isZero(det)
&& isFinite(this._tx) && isFinite(this._ty)
? det : null;
},
_inverseTransform: function(point, dest, _dontNotify) {
var det = this._getDeterminant();
if (!det)
return null;
var x = point.x - this._tx,
y = point.y - this._ty;
if (!dest)
dest = new Point();
return dest.set(
(x * this._d - y * this._b) / det,
(y * this._a - x * this._c) / det,
_dontNotify
);
},
decompose: function() {
var a = this._a, b = this._b, c = this._c, d = this._d;
if (Numerical.isZero(a * d - b * c))
return null;
var scaleX = Math.sqrt(a * a + b * b);
a /= scaleX;
b /= scaleX;
var shear = a * c + b * d;
c -= a * shear;
d -= b * shear;
var scaleY = Math.sqrt(c * c + d * d);
c /= scaleY;
d /= scaleY;
shear /= scaleY;
if (a * d < b * c) {
a = -a;
b = -b;
shear = -shear;
scaleX = -scaleX;
}
return {
scaling: new Point(scaleX, scaleY),
rotation: -Math.atan2(b, a) * 180 / Math.PI,
shearing: shear
};
},
getValues: function() {
return [ this._a, this._c, this._b, this._d, this._tx, this._ty ];
},
getTranslation: function() {
return new Point(this._tx, this._ty);
},
getScaling: function() {
return (this.decompose() || {}).scaling;
},
getRotation: function() {
return (this.decompose() || {}).rotation;
},
inverted: function() {
var det = this._getDeterminant();
return det && new Matrix(
this._d / det,
-this._c / det,
-this._b / det,
this._a / det,
(this._b * this._ty - this._d * this._tx) / det,
(this._c * this._tx - this._a * this._ty) / det);
},
shiftless: function() {
return new Matrix(this._a, this._c, this._b, this._d, 0, 0);
},
applyToContext: function(ctx) {
ctx.transform(this._a, this._c, this._b, this._d, this._tx, this._ty);
}
}, Base.each(['a', 'c', 'b', 'd', 'tx', 'ty'], function(name) {
var part = Base.capitalize(name),
prop = '_' + name;
this['get' + part] = function() {
return this[prop];
};
this['set' + part] = function(value) {
this[prop] = value;
this._changed();
};
}, {}));
var Line = Base.extend({
_class: 'Line',
initialize: function Line(arg0, arg1, arg2, arg3, arg4) {
var asVector = false;
if (arguments.length >= 4) {
this._px = arg0;
this._py = arg1;
this._vx = arg2;
this._vy = arg3;
asVector = arg4;
} else {
this._px = arg0.x;
this._py = arg0.y;
this._vx = arg1.x;
this._vy = arg1.y;
asVector = arg2;
}
if (!asVector) {
this._vx -= this._px;
this._vy -= this._py;
}
},
getPoint: function() {
return new Point(this._px, this._py);
},
getVector: function() {
return new Point(this._vx, this._vy);
},
getLength: function() {
return this.getVector().getLength();
},
intersect: function(line, isInfinite) {
return Line.intersect(
this._px, this._py, this._vx, this._vy,
line._px, line._py, line._vx, line._vy,
true, isInfinite);
},
getSide: function(point, isInfinite) {
return Line.getSide(
this._px, this._py, this._vx, this._vy,
point.x, point.y, true, isInfinite);
},
getDistance: function(point) {
return Math.abs(Line.getSignedDistance(
this._px, this._py, this._vx, this._vy,
point.x, point.y, true));
},
isCollinear: function(line) {
return Point.isCollinear(this._vx, this._vy, line._vx, line._vy);
},
isOrthogonal: function(line) {
return Point.isOrthogonal(this._vx, this._vy, line._vx, line._vy);
},
statics: {
intersect: function(p1x, p1y, v1x, v1y, p2x, p2y, v2x, v2y, asVector,
isInfinite) {
if (!asVector) {
v1x -= p1x;
v1y -= p1y;
v2x -= p2x;
v2y -= p2y;
}
var cross = v1x * v2y - v1y * v2x;
if (!Numerical.isZero(cross)) {
var dx = p1x - p2x,
dy = p1y - p2y,
u1 = (v2x * dy - v2y * dx) / cross,
u2 = (v1x * dy - v1y * dx) / cross,
epsilon = 1e-12,
uMin = -epsilon,
uMax = 1 + epsilon;
if (isInfinite
|| uMin < u1 && u1 < uMax && uMin < u2 && u2 < uMax) {
if (!isInfinite) {
u1 = u1 <= 0 ? 0 : u1 >= 1 ? 1 : u1;
}
return new Point(
p1x + u1 * v1x,
p1y + u1 * v1y);
}
}
},
getSide: function(px, py, vx, vy, x, y, asVector, isInfinite) {
if (!asVector) {
vx -= px;
vy -= py;
}
var v2x = x - px,
v2y = y - py,
ccw = v2x * vy - v2y * vx;
if (ccw === 0 && !isInfinite) {
ccw = (v2x * vx + v2x * vx) / (vx * vx + vy * vy);
if (ccw >= 0 && ccw <= 1)
ccw = 0;
}
return ccw < 0 ? -1 : ccw > 0 ? 1 : 0;
},
getSignedDistance: function(px, py, vx, vy, x, y, asVector) {
if (!asVector) {
vx -= px;
vy -= py;
}
return vx === 0 ? vy > 0 ? x - px : px - x
: vy === 0 ? vx < 0 ? y - py : py - y
: ((x-px) * vy - (y-py) * vx) / Math.sqrt(vx * vx + vy * vy);
}
}
});
var Project = PaperScopeItem.extend({
_class: 'Project',
_list: 'projects',
_reference: 'project',
initialize: function Project(element) {
PaperScopeItem.call(this, true);
this.layers = [];
this._activeLayer = null;
this.symbols = [];
this._currentStyle = new Style(null, null, this);
this._view = View.create(this,
element || CanvasProvider.getCanvas(1, 1));
this._selectedItems = {};
this._selectedItemCount = 0;
this._updateVersion = 0;
},
_serialize: function(options, dictionary) {
return Base.serialize(this.layers, options, true, dictionary);
},
clear: function() {
for (var i = this.layers.length - 1; i >= 0; i--)
this.layers[i].remove();
this.symbols = [];
},
isEmpty: function() {
return this.layers.length === 0;
},
remove: function remove() {
if (!remove.base.call(this))
return false;
if (this._view)
this._view.remove();
return true;
},
getView: function() {
return this._view;
},
getCurrentStyle: function() {
return this._currentStyle;
},
setCurrentStyle: function(style) {
this._currentStyle.initialize(style);
},
getIndex: function() {
return this._index;
},
getOptions: function() {
return this._scope.settings;
},
getActiveLayer: function() {
return this._activeLayer || new Layer({ project: this });
},
getSelectedItems: function() {
var items = [];
for (var id in this._selectedItems) {
var item = this._selectedItems[id];
if (item.isInserted())
items.push(item);
}
return items;
},
insertChild: function(index, item, _preserve) {
if (item instanceof Layer) {
item._remove(false, true);
Base.splice(this.layers, [item], index, 0);
item._setProject(this, true);
if (this._changes)
item._changed(5);
if (!this._activeLayer)
this._activeLayer = item;
} else if (item instanceof Item) {
(this._activeLayer
|| this.insertChild(index, new Layer(Item.NO_INSERT)))
.insertChild(index, item, _preserve);
} else {
item = null;
}
return item;
},
addChild: function(item, _preserve) {
return this.insertChild(undefined, item, _preserve);
},
_updateSelection: function(item) {
var id = item._id,
selectedItems = this._selectedItems;
if (item._selected) {
if (selectedItems[id] !== item) {
this._selectedItemCount++;
selectedItems[id] = item;
}
} else if (selectedItems[id] === item) {
this._selectedItemCount--;
delete selectedItems[id];
}
},
selectAll: function() {
var layers = this.layers;
for (var i = 0, l = layers.length; i < l; i++)
layers[i].setFullySelected(true);
},
deselectAll: function() {
var selectedItems = this._selectedItems;
for (var i in selectedItems)
selectedItems[i].setFullySelected(false);
},
hitTest: function() {
var point = Point.read(arguments),
options = HitResult.getOptions(Base.read(arguments));
for (var i = this.layers.length - 1; i >= 0; i--) {
var res = this.layers[i]._hitTest(point, options);
if (res) return res;
}
return null;
},
getItems: function(match) {
return Item._getItems(this.layers, match);
},
getItem: function(match) {
return Item._getItems(this.layers, match, null, null, true)[0] || null;
},
importJSON: function(json) {
this.activate();
var layer = this._activeLayer;
return Base.importJSON(json, layer && layer.isEmpty() && layer);
},
draw: function(ctx, matrix, pixelRatio) {
this._updateVersion++;
ctx.save();
matrix.applyToContext(ctx);
var param = new Base({
offset: new Point(0, 0),
pixelRatio: pixelRatio,
viewMatrix: matrix.isIdentity() ? null : matrix,
matrices: [new Matrix()],
updateMatrix: true
});
for (var i = 0, layers = this.layers, l = layers.length; i < l; i++)
layers[i].draw(ctx, param);
ctx.restore();
if (this._selectedItemCount > 0) {
ctx.save();
ctx.strokeWidth = 1;
var items = this._selectedItems,
size = this._scope.settings.handleSize,
version = this._updateVersion;
for (var id in items)
items[id]._drawSelection(ctx, matrix, size, items, version);
ctx.restore();
}
}
});
var Symbol = Base.extend({
_class: 'Symbol',
initialize: function Symbol(item, dontCenter) {
this._id = UID.get();
this.project = paper.project;
this.project.symbols.push(this);
if (item)
this.setDefinition(item, dontCenter);
},
_serialize: function(options, dictionary) {
return dictionary.add(this, function() {
return Base.serialize([this._class, this._definition],
options, false, dictionary);
});
},
_changed: function(flags) {
if (flags & 8) {
Item._clearBoundsCache(this);
}
if (flags & 1) {
this.project._needsUpdate = true;
}
},
getDefinition: function() {
return this._definition;
},
setDefinition: function(item, _dontCenter) {
if (item._parentSymbol)
item = item.clone();
if (this._definition)
this._definition._parentSymbol = null;
this._definition = item;
item.remove();
item.setSelected(false);
if (!_dontCenter)
item.setPosition(new Point());
item._parentSymbol = this;
this._changed(9);
},
place: function(position) {
return new PlacedSymbol(this, position);
},
clone: function() {
return new Symbol(this._definition.clone(false));
},
equals: function(symbol) {
return symbol === this
|| symbol && this.definition.equals(symbol.definition)
|| false;
}
});
var Item = Base.extend(Emitter, {
statics: {
extend: function extend(src) {
if (src._serializeFields)
src._serializeFields = new Base(
this.prototype._serializeFields, src._serializeFields);
return extend.base.apply(this, arguments);
},
NO_INSERT: { insert: false }
},
_class: 'Item',
_applyMatrix: true,
_canApplyMatrix: true,
_boundsSelected: false,
_selectChildren: false,
_serializeFields: {
name: null,
applyMatrix: null,
matrix: new Matrix(),
pivot: null,
locked: false,
visible: true,
blendMode: 'normal',
opacity: 1,
guide: false,
selected: false,
clipMask: false,
data: {}
},
initialize: function Item() {
},
_initialize: function(props, point) {
var hasProps = props && Base.isPlainObject(props),
internal = hasProps && props.internal === true,
matrix = this._matrix = new Matrix(),
project = hasProps && props.project || paper.project;
if (!internal)
this._id = UID.get();
this._applyMatrix = this._canApplyMatrix && paper.settings.applyMatrix;
if (point)
matrix.translate(point);
matrix._owner = this;
this._style = new Style(project._currentStyle, this, project);
if (!this._project) {
if (internal || hasProps && props.insert === false) {
this._setProject(project);
} else if (hasProps && props.parent) {
this.setParent(props.parent);
} else {
(project._activeLayer || new Layer()).addChild(this);
}
}
if (hasProps && props !== Item.NO_INSERT)
this._set(props, { insert: true, project: true, parent: true },
true);
return hasProps;
},
_events: Base.each(['onMouseDown', 'onMouseUp', 'onMouseDrag', 'onClick',
'onDoubleClick', 'onMouseMove', 'onMouseEnter', 'onMouseLeave'],
function(name) {
this[name] = {
install: function(type) {
this.getView()._installEvent(type);
},
uninstall: function(type) {
this.getView()._uninstallEvent(type);
}
};
}, {
onFrame: {
install: function() {
this.getView()._animateItem(this, true);
},
uninstall: function() {
this.getView()._animateItem(this, false);
}
},
onLoad: {}
}
),
_serialize: function(options, dictionary) {
var props = {},
that = this;
function serialize(fields) {
for (var key in fields) {
var value = that[key];
if (!Base.equals(value, key === 'leading'
? fields.fontSize * 1.2 : fields[key])) {
props[key] = Base.serialize(value, options,
key !== 'data', dictionary);
}
}
}
serialize(this._serializeFields);
if (!(this instanceof Group))
serialize(this._style._defaults);
return [ this._class, props ];
},
_changed: function(flags) {
var symbol = this._parentSymbol,
cacheParent = this._parent || symbol,
project = this._project;
if (flags & 8) {
this._bounds = this._position = this._decomposed =
this._globalMatrix = this._currentPath = undefined;
}
if (cacheParent
&& (flags & 40)) {
Item._clearBoundsCache(cacheParent);
}
if (flags & 2) {
Item._clearBoundsCache(this);
}
if (project) {
if (flags & 1) {
project._needsUpdate = true;
}
if (project._changes) {
var entry = project._changesById[this._id];
if (entry) {
entry.flags |= flags;
} else {
entry = { item: this, flags: flags };
project._changesById[this._id] = entry;
project._changes.push(entry);
}
}
}
if (symbol)
symbol._changed(flags);
},
set: function(props) {
if (props)
this._set(props);
return this;
},
getId: function() {
return this._id;
},
getName: function() {
return this._name;
},
setName: function(name, unique) {
if (this._name)
this._removeNamed();
if (name === (+name) + '')
throw new Error(
'Names consisting only of numbers are not supported.');
var parent = this._parent;
if (name && parent) {
var children = parent._children,
namedChildren = parent._namedChildren,
orig = name,
i = 1;
while (unique && children[name])
name = orig + ' ' + (i++);
(namedChildren[name] = namedChildren[name] || []).push(this);
children[name] = this;
}
this._name = name || undefined;
this._changed(128);
},
getStyle: function() {
return this._style;
},
setStyle: function(style) {
this.getStyle().set(style);
}
}, Base.each(['locked', 'visible', 'blendMode', 'opacity', 'guide'],
function(name) {
var part = Base.capitalize(name),
name = '_' + name;
this['get' + part] = function() {
return this[name];
};
this['set' + part] = function(value) {
if (value != this[name]) {
this[name] = value;
this._changed(name === '_locked'
? 128 : 129);
}
};
},
{}), {
beans: true,
_locked: false,
_visible: true,
_blendMode: 'normal',
_opacity: 1,
_guide: false,
isSelected: function() {
if (this._selectChildren) {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++)
if (children[i].isSelected())
return true;
}
return this._selected;
},
setSelected: function(selected, noChildren) {
if (!noChildren && this._selectChildren) {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++)
children[i].setSelected(selected);
}
if ((selected = !!selected) ^ this._selected) {
this._selected = selected;
this._project._updateSelection(this);
this._changed(129);
}
},
_selected: false,
isFullySelected: function() {
var children = this._children;
if (children && this._selected) {
for (var i = 0, l = children.length; i < l; i++)
if (!children[i].isFullySelected())
return false;
return true;
}
return this._selected;
},
setFullySelected: function(selected) {
var children = this._children;
if (children) {
for (var i = 0, l = children.length; i < l; i++)
children[i].setFullySelected(selected);
}
this.setSelected(selected, true);
},
isClipMask: function() {
return this._clipMask;
},
setClipMask: function(clipMask) {
if (this._clipMask != (clipMask = !!clipMask)) {
this._clipMask = clipMask;
if (clipMask) {
this.setFillColor(null);
this.setStrokeColor(null);
}
this._changed(129);
if (this._parent)
this._parent._changed(1024);
}
},
_clipMask: false,
getData: function() {
if (!this._data)
this._data = {};
return this._data;
},
setData: function(data) {
this._data = data;
},
getPosition: function(_dontLink) {
var position = this._position,
ctor = _dontLink ? Point : LinkedPoint;
if (!position) {
var pivot = this._pivot;
position = this._position = pivot
? this._matrix._transformPoint(pivot)
: this.getBounds().getCenter(true);
}
return new ctor(position.x, position.y, this, 'setPosition');
},
setPosition: function() {
this.translate(Point.read(arguments).subtract(this.getPosition(true)));
},
getPivot: function(_dontLink) {
var pivot = this._pivot;
if (pivot) {
var ctor = _dontLink ? Point : LinkedPoint;
pivot = new ctor(pivot.x, pivot.y, this, 'setPivot');
}
return pivot;
},
setPivot: function() {
this._pivot = Point.read(arguments, 0, { clone: true, readNull: true });
this._position = undefined;
},
_pivot: null,
}, Base.each(['bounds', 'strokeBounds', 'handleBounds', 'roughBounds',
'internalBounds', 'internalRoughBounds'],
function(key) {
var getter = 'get' + Base.capitalize(key),
match = key.match(/^internal(.*)$/),
internalGetter = match ? 'get' + match[1] : null;
this[getter] = function(_matrix) {
var boundsGetter = this._boundsGetter,
name = !internalGetter && (typeof boundsGetter === 'string'
? boundsGetter : boundsGetter && boundsGetter[getter])
|| getter,
bounds = this._getCachedBounds(name, _matrix, this,
internalGetter);
return key === 'bounds'
? new LinkedRectangle(bounds.x, bounds.y, bounds.width,
bounds.height, this, 'setBounds')
: bounds;
};
},
{
beans: true,
_getBounds: function(getter, matrix, cacheItem) {
var children = this._children;
if (!children || children.length == 0)
return new Rectangle();
Item._updateBoundsCache(this, cacheItem);
var x1 = Infinity,
x2 = -x1,
y1 = x1,
y2 = x2;
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i];
if (child._visible && !child.isEmpty()) {
var rect = child._getCachedBounds(getter,
matrix && matrix.chain(child._matrix), cacheItem);
x1 = Math.min(rect.x, x1);
y1 = Math.min(rect.y, y1);
x2 = Math.max(rect.x + rect.width, x2);
y2 = Math.max(rect.y + rect.height, y2);
}
}
return isFinite(x1)
? new Rectangle(x1, y1, x2 - x1, y2 - y1)
: new Rectangle();
},
setBounds: function() {
var rect = Rectangle.read(arguments),
bounds = this.getBounds(),
matrix = new Matrix(),
center = rect.getCenter();
matrix.translate(center);
if (rect.width != bounds.width || rect.height != bounds.height) {
matrix.scale(
bounds.width != 0 ? rect.width / bounds.width : 1,
bounds.height != 0 ? rect.height / bounds.height : 1);
}
center = bounds.getCenter();
matrix.translate(-center.x, -center.y);
this.transform(matrix);
},
_getCachedBounds: function(getter, matrix, cacheItem, internalGetter) {
matrix = matrix && matrix.orNullIfIdentity();
var _matrix = internalGetter ? null : this._matrix.orNullIfIdentity(),
cache = (!matrix || matrix.equals(_matrix)) && getter;
Item._updateBoundsCache(this._parent || this._parentSymbol, cacheItem);
if (cache && this._bounds && this._bounds[cache])
return this._bounds[cache].clone();
var bounds = this._getBounds(internalGetter || getter,
matrix || _matrix, cacheItem);
if (cache) {
if (!this._bounds)
this._bounds = {};
var cached = this._bounds[cache] = bounds.clone();
cached._internal = !!internalGetter;
}
return bounds;
},
statics: {
_updateBoundsCache: function(parent, item) {
if (parent) {
var id = item._id,
ref = parent._boundsCache = parent._boundsCache || {
ids: {},
list: []
};
if (!ref.ids[id]) {
ref.list.push(item);
ref.ids[id] = item;
}
}
},
_clearBoundsCache: function(item) {
var cache = item._boundsCache;
if (cache) {
item._bounds = item._position = item._boundsCache = undefined;
for (var i = 0, list = cache.list, l = list.length; i < l; i++){
var other = list[i];
if (other !== item) {
other._bounds = other._position = undefined;
if (other._boundsCache)
Item._clearBoundsCache(other);
}
}
}
}
}
}), {
beans: true,
_decompose: function() {
return this._decomposed = this._matrix.decompose();
},
getRotation: function() {
var decomposed = this._decomposed || this._decompose();
return decomposed && decomposed.rotation;
},
setRotation: function(rotation) {
var current = this.getRotation();
if (current != null && rotation != null) {
var decomposed = this._decomposed;
this.rotate(rotation - current);
decomposed.rotation = rotation;
this._decomposed = decomposed;
}
},
getScaling: function(_dontLink) {
var decomposed = this._decomposed || this._decompose(),
scaling = decomposed && decomposed.scaling,
ctor = _dontLink ? Point : LinkedPoint;
return scaling && new ctor(scaling.x, scaling.y, this, 'setScaling');
},
setScaling: function() {
var current = this.getScaling();
if (current) {
var scaling = Point.read(arguments, 0, { clone: true }),
decomposed = this._decomposed;
this.scale(scaling.x / current.x, scaling.y / current.y);
decomposed.scaling = scaling;
this._decomposed = decomposed;
}
},
getMatrix: function() {
return this._matrix;
},
setMatrix: function() {
var matrix = this._matrix;
matrix.initialize.apply(matrix, arguments);
if (this._applyMatrix) {
this.transform(null, true);
} else {
this._changed(9);
}
},
getGlobalMatrix: function(_dontClone) {
var matrix = this._globalMatrix,
updateVersion = this._project._updateVersion;
if (matrix && matrix._updateVersion !== updateVersion)
matrix = null;
if (!matrix) {
matrix = this._globalMatrix = this._matrix.clone();
var parent = this._parent;
if (parent)
matrix.preConcatenate(parent.getGlobalMatrix(true));
matrix._updateVersion = updateVersion;
}
return _dontClone ? matrix : matrix.clone();
},
getApplyMatrix: function() {
return this._applyMatrix;
},
setApplyMatrix: function(apply) {
if (this._applyMatrix = this._canApplyMatrix && !!apply)
this.transform(null, true);
},
getTransformContent: '#getApplyMatrix',
setTransformContent: '#setApplyMatrix',
}, {
getProject: function() {
return this._project;
},
_setProject: function(project, installEvents) {
if (this._project !== project) {
if (this._project)
this._installEvents(false);
this._project = project;
var children = this._children;
for (var i = 0, l = children && children.length; i < l; i++)
children[i]._setProject(project);
installEvents = true;
}
if (installEvents)
this._installEvents(true);
},
getView: function() {
return this._project.getView();
},
_installEvents: function _installEvents(install) {
_installEvents.base.call(this, install);
var children = this._children;
for (var i = 0, l = children && children.length; i < l; i++)
children[i]._installEvents(install);
},
getLayer: function() {
var parent = this;
while (parent = parent._parent) {
if (parent instanceof Layer)
return parent;
}
return null;
},
getParent: function() {
return this._parent;
},
setParent: function(item) {
return item.addChild(this);
},
getChildren: function() {
return this._children;
},
setChildren: function(items) {
this.removeChildren();
this.addChildren(items);
},
getFirstChild: function() {
return this._children && this._children[0] || null;
},
getLastChild: function() {
return this._children && this._children[this._children.length - 1]
|| null;
},
getNextSibling: function() {
return this._parent && this._parent._children[this._index + 1] || null;
},
getPreviousSibling: function() {
return this._parent && this._parent._children[this._index - 1] || null;
},
getIndex: function() {
return this._index;
},
equals: function(item) {
return item === this || item && this._class === item._class
&& this._style.equals(item._style)
&& this._matrix.equals(item._matrix)
&& this._locked === item._locked
&& this._visible === item._visible
&& this._blendMode === item._blendMode
&& this._opacity === item._opacity
&& this._clipMask === item._clipMask
&& this._guide === item._guide
&& this._equals(item)
|| false;
},
_equals: function(item) {
return Base.equals(this._children, item._children);
},
clone: function(insert) {
return this._clone(new this.constructor(Item.NO_INSERT), insert);
},
_clone: function(copy, insert, includeMatrix) {
var keys = ['_locked', '_visible', '_blendMode', '_opacity',
'_clipMask', '_guide'],
children = this._children;
copy.setStyle(this._style);
for (var i = 0, l = children && children.length; i < l; i++) {
copy.addChild(children[i].clone(false), true);
}
for (var i = 0, l = keys.length; i < l; i++) {
var key = keys[i];
if (this.hasOwnProperty(key))
copy[key] = this[key];
}
if (includeMatrix !== false)
copy._matrix.initialize(this._matrix);
copy.setApplyMatrix(this._applyMatrix);
copy.setPivot(this._pivot);
copy.setSelected(this._selected);
copy._data = this._data ? Base.clone(this._data) : null;
if (insert || insert === undefined)
copy.insertAbove(this);
if (this._name)
copy.setName(this._name, true);
return copy;
},
copyTo: function(itemOrProject) {
return itemOrProject.addChild(this.clone(false));
},
rasterize: function(resolution) {
var bounds = this.getStrokeBounds(),
scale = (resolution || this.getView().getResolution()) / 72,
topLeft = bounds.getTopLeft().floor(),
bottomRight = bounds.getBottomRight().ceil(),
size = new Size(bottomRight.subtract(topLeft)),
canvas = CanvasProvider.getCanvas(size.multiply(scale)),
ctx = canvas.getContext('2d'),
matrix = new Matrix().scale(scale).translate(topLeft.negate());
ctx.save();
matrix.applyToContext(ctx);
this.draw(ctx, new Base({ matrices: [matrix] }));
ctx.restore();
var raster = new Raster(Item.NO_INSERT);
raster.setCanvas(canvas);
raster.transform(new Matrix().translate(topLeft.add(size.divide(2)))
.scale(1 / scale));
raster.insertAbove(this);
return raster;
},
contains: function() {
return !!this._contains(
this._matrix._inverseTransform(Point.read(arguments)));
},
_contains: function(point) {
if (this._children) {
for (var i = this._children.length - 1; i >= 0; i--) {
if (this._children[i].contains(point))
return true;
}
return false;
}
return point.isInside(this.getInternalBounds());
},
isInside: function() {
return Rectangle.read(arguments).contains(this.getBounds());
},
_asPathItem: function() {
return new Path.Rectangle({
rectangle: this.getInternalBounds(),
matrix: this._matrix,
insert: false,
});
},
intersects: function(item, _matrix) {
if (!(item instanceof Item))
return false;
return this._asPathItem().getIntersections(item._asPathItem(), null,
_matrix || item._matrix, true).length > 0;
},
hitTest: function() {
return this._hitTest(
Point.read(arguments),
HitResult.getOptions(Base.read(arguments)));
},
_hitTest: function(point, options) {
if (this._locked || !this._visible || this._guide && !options.guides
|| this.isEmpty())
return null;
var matrix = this._matrix,
parentTotalMatrix = options._totalMatrix,
view = this.getView(),
totalMatrix = options._totalMatrix = parentTotalMatrix
? parentTotalMatrix.chain(matrix)
: this.getGlobalMatrix().preConcatenate(view._matrix),
tolerancePadding = options._tolerancePadding = new Size(
Path._getPenPadding(1, totalMatrix.inverted())
).multiply(
Math.max(options.tolerance, 1e-6)
);
point = matrix._inverseTransform(point);
if (!this._children && !this.getInternalRoughBounds()
.expand(tolerancePadding.multiply(2))._containsPoint(point))
return null;
var checkSelf = !(options.guides && !this._guide
|| options.selected && !this._selected
|| options.type && options.type !== Base.hyphenate(this._class)
|| options.class && !(this instanceof options.class)),
that = this,
res;
function checkBounds(type, part) {
var pt = bounds['get' + part]();
if (point.subtract(pt).divide(tolerancePadding).length <= 1)
return new HitResult(type, that,
{ name: Base.hyphenate(part), point: pt });
}
if (checkSelf && (options.center || options.bounds) && this._parent) {
var bounds = this.getInternalBounds();
if (options.center)
res = checkBounds('center', 'Center');
if (!res && options.bounds) {
var points = [
'TopLeft', 'TopRight', 'BottomLeft', 'BottomRight',
'LeftCenter', 'TopCenter', 'RightCenter', 'BottomCenter'
];
for (var i = 0; i < 8 && !res; i++)
res = checkBounds('bounds', points[i]);
}
}
var children = !res && this._children;
if (children) {
var opts = this._getChildHitTestOptions(options);
for (var i = children.length - 1; i >= 0 && !res; i--)
res = children[i]._hitTest(point, opts);
}
if (!res && checkSelf)
res = this._hitTestSelf(point, options);
if (res && res.point)
res.point = matrix.transform(res.point);
options._totalMatrix = parentTotalMatrix;
return res;
},
_getChildHitTestOptions: function(options) {
return options;
},
_hitTestSelf: function(point, options) {
if (options.fill && this.hasFill() && this._contains(point))
return new HitResult('fill', this);
},
matches: function(name, compare) {
function matchObject(obj1, obj2) {
for (var i in obj1) {
if (obj1.hasOwnProperty(i)) {
var val1 = obj1[i],
val2 = obj2[i];
if (Base.isPlainObject(val1) && Base.isPlainObject(val2)) {
if (!matchObject(val1, val2))
return false;
} else if (!Base.equals(val1, val2)) {
return false;
}
}
}
return true;
}
var type = typeof name;
if (type === 'object') {
for (var key in name) {
if (name.hasOwnProperty(key) && !this.matches(key, name[key]))
return false;
}
} else if (type === 'function') {
return name(this);
} else {
var value = /^(empty|editable)$/.test(name)
? this['is' + Base.capitalize(name)]()
: name === 'type'
? Base.hyphenate(this._class)
: this[name];
if (/^(constructor|class)$/.test(name)) {
if (!(this instanceof compare))
return false;
} else if (compare instanceof RegExp) {
if (!compare.test(value))
return false;
} else if (typeof compare === 'function') {
if (!compare(value))
return false;
} else if (Base.isPlainObject(compare)) {
if (!matchObject(compare, value))
return false;
} else if (!Base.equals(value, compare)) {
return false;
}
}
return true;
},
getItems: function(match) {
return Item._getItems(this._children, match, this._matrix);
},
getItem: function(match) {
return Item._getItems(this._children, match, this._matrix, null, true)
[0] || null;
},
statics: {
_getItems: function _getItems(children, match, matrix, param,
firstOnly) {
if (!param && typeof match === 'object') {
var overlapping = match.overlapping,
inside = match.inside,
bounds = overlapping || inside,
rect = bounds && Rectangle.read([bounds]);
param = {
items: [],
inside: !!inside,
overlapping: !!overlapping,
rect: rect,
path: overlapping && new Path.Rectangle({
rectangle: rect,
insert: false
})
};
if (bounds)
match = Base.set({}, match,
{ inside: true, overlapping: true });
}
var items = param && param.items,
rect = param && param.rect;
matrix = rect && (matrix || new Matrix());
for (var i = 0, l = children && children.length; i < l; i++) {
var child = children[i],
childMatrix = matrix && matrix.chain(child._matrix),
add = true;
if (rect) {
var bounds = child.getBounds(childMatrix);
if (!rect.intersects(bounds))
continue;
if (!(param.inside && rect.contains(bounds))
&& !(param.overlapping && (bounds.contains(rect)
|| param.path.intersects(child, childMatrix))))
add = false;
}
if (add && child.matches(match)) {
items.push(child);
if (firstOnly)
break;
}
_getItems(child._children, match,
childMatrix, param,
firstOnly);
if (firstOnly && items.length > 0)
break;
}
return items;
}
}
}, {
importJSON: function(json) {
var res = Base.importJSON(json, this);
return res !== this
? this.addChild(res)
: res;
},
addChild: function(item, _preserve) {
return this.insertChild(undefined, item, _preserve);
},
insertChild: function(index, item, _preserve) {
var res = item ? this.insertChildren(index, [item], _preserve) : null;
return res && res[0];
},
addChildren: function(items, _preserve) {
return this.insertChildren(this._children.length, items, _preserve);
},
insertChildren: function(index, items, _preserve, _proto) {
var children = this._children;
if (children && items && items.length > 0) {
items = Array.prototype.slice.apply(items);
for (var i = items.length - 1; i >= 0; i--) {
var item = items[i];
if (_proto && !(item instanceof _proto)) {
items.splice(i, 1);
} else {
var shift = item._parent === this && item._index < index;
if (item._remove(false, true) && shift)
index--;
}
}
Base.splice(children, items, index, 0);
var project = this._project,
notifySelf = project && project._changes;
for (var i = 0, l = items.length; i < l; i++) {
var item = items[i];
item._parent = this;
item._setProject(this._project, true);
if (item._name)
item.setName(item._name);
if (notifySelf)
this._changed(5);
}
this._changed(11);
} else {
items = null;
}
return items;
},
_insertSibling: function(index, item, _preserve) {
return this._parent
? this._parent.insertChild(index, item, _preserve)
: null;
},
insertAbove: function(item, _preserve) {
return item._insertSibling(item._index + 1, this, _preserve);
},
insertBelow: function(item, _preserve) {
return item._insertSibling(item._index, this, _preserve);
},
sendToBack: function() {
return (this._parent || this instanceof Layer && this._project)
.insertChild(0, this);
},
bringToFront: function() {
return (this._parent || this instanceof Layer && this._project)
.addChild(this);
},
appendTop: '#addChild',
appendBottom: function(item) {
return this.insertChild(0, item);
},
moveAbove: '#insertAbove',
moveBelow: '#insertBelow',
reduce: function() {
if (this._children && this._children.length === 1) {
var child = this._children[0].reduce();
child.insertAbove(this);
child.setStyle(this._style);
this.remove();
return child;
}
return this;
},
_removeNamed: function() {
var parent = this._parent;
if (parent) {
var children = parent._children,
namedChildren = parent._namedChildren,
name = this._name,
namedArray = namedChildren[name],
index = namedArray ? namedArray.indexOf(this) : -1;
if (index !== -1) {
if (children[name] == this)
delete children[name];
namedArray.splice(index, 1);
if (namedArray.length) {
children[name] = namedArray[namedArray.length - 1];
} else {
delete namedChildren[name];
}
}
}
},
_remove: function(notifySelf, notifyParent) {
var parent = this._parent;
if (parent) {
if (this._name)
this._removeNamed();
if (this._index != null)
Base.splice(parent._children, null, this._index, 1);
this._installEvents(false);
if (notifySelf) {
var project = this._project;
if (project && project._changes)
this._changed(5);
}
if (notifyParent)
parent._changed(11);
this._parent = null;
return true;
}
return false;
},
remove: function() {
return this._remove(true, true);
},
replaceWith: function(item) {
var ok = item && item.insertBelow(this);
if (ok)
this.remove();
return ok;
},
removeChildren: function(from, to) {
if (!this._children)
return null;
from = from || 0;
to = Base.pick(to, this._children.length);
var removed = Base.splice(this._children, null, from, to - from);
for (var i = removed.length - 1; i >= 0; i--) {
removed[i]._remove(true, false);
}
if (removed.length > 0)
this._changed(11);
return removed;
},
clear: '#removeChildren',
reverseChildren: function() {
if (this._children) {
this._children.reverse();
for (var i = 0, l = this._children.length; i < l; i++)
this._children[i]._index = i;
this._changed(11);
}
},
isEmpty: function() {
return !this._children || this._children.length === 0;
},
isEditable: function() {
var item = this;
while (item) {
if (!item._visible || item._locked)
return false;
item = item._parent;
}
return true;
},
hasFill: function() {
return this.getStyle().hasFill();
},
hasStroke: function() {
return this.getStyle().hasStroke();
},
hasShadow: function() {
return this.getStyle().hasShadow();
},
_getOrder: function(item) {
function getList(item) {
var list = [];
do {
list.unshift(item);
} while (item = item._parent);
return list;
}
var list1 = getList(this),
list2 = getList(item);
for (var i = 0, l = Math.min(list1.length, list2.length); i < l; i++) {
if (list1[i] != list2[i]) {
return list1[i]._index < list2[i]._index ? 1 : -1;
}
}
return 0;
},
hasChildren: function() {
return this._children && this._children.length > 0;
},
isInserted: function() {
return this._parent ? this._parent.isInserted() : false;
},
isAbove: function(item) {
return this._getOrder(item) === -1;
},
isBelow: function(item) {
return this._getOrder(item) === 1;
},
isParent: function(item) {
return this._parent === item;
},
isChild: function(item) {
return item && item._parent === this;
},
isDescendant: function(item) {
var parent = this;
while (parent = parent._parent) {
if (parent == item)
return true;
}
return false;
},
isAncestor: function(item) {
return item ? item.isDescendant(this) : false;
},
isSibling: function(item) {
return this._parent === item._parent;
},
isGroupedWith: function(item) {
var parent = this._parent;
while (parent) {
if (parent._parent
&& /^(Group|Layer|CompoundPath)$/.test(parent._class)
&& item.isDescendant(parent))
return true;
parent = parent._parent;
}
return false;
},
translate: function() {
var mx = new Matrix();
return this.transform(mx.translate.apply(mx, arguments));
},
rotate: function(angle ) {
return this.transform(new Matrix().rotate(angle,
Point.read(arguments, 1, { readNull: true })
|| this.getPosition(true)));
}
}, Base.each(['scale', 'shear', 'skew'], function(name) {
this[name] = function() {
var point = Point.read(arguments),
center = Point.read(arguments, 0, { readNull: true });
return this.transform(new Matrix()[name](point,
center || this.getPosition(true)));
};
}, {
}), {
transform: function(matrix, _applyMatrix, _applyRecursively,
_setApplyMatrix) {
if (matrix && matrix.isIdentity())
matrix = null;
var _matrix = this._matrix,
applyMatrix = (_applyMatrix || this._applyMatrix)
&& ((!_matrix.isIdentity() || matrix)
|| _applyMatrix && _applyRecursively && this._children);
if (!matrix && !applyMatrix)
return this;
if (matrix)
_matrix.preConcatenate(matrix);
if (applyMatrix = applyMatrix && this._transformContent(_matrix,
_applyRecursively, _setApplyMatrix)) {
var pivot = this._pivot,
style = this._style,
fillColor = style.getFillColor(true),
strokeColor = style.getStrokeColor(true);
if (pivot)
_matrix._transformPoint(pivot, pivot, true);
if (fillColor)
fillColor.transform(_matrix);
if (strokeColor)
strokeColor.transform(_matrix);
_matrix.reset(true);
if (_setApplyMatrix && this._canApplyMatrix)
this._applyMatrix = true;
}
var bounds = this._bounds,
position = this._position;
this._changed(9);
var decomp = bounds && matrix && matrix.decompose();
if (decomp && !decomp.shearing && decomp.rotation % 90 === 0) {
for (var key in bounds) {
var rect = bounds[key];
if (applyMatrix || !rect._internal)
matrix._transformBounds(rect, rect);
}
var getter = this._boundsGetter,
rect = bounds[getter && getter.getBounds || getter || 'getBounds'];
if (rect)
this._position = rect.getCenter(true);
this._bounds = bounds;
} else if (matrix && position) {
this._position = matrix._transformPoint(position, position);
}
return this;
},
_transformContent: function(matrix, applyRecursively, setApplyMatrix) {
var children = this._children;
if (children) {
for (var i = 0, l = children.length; i < l; i++)
children[i].transform(matrix, true, applyRecursively,
setApplyMatrix);
return true;
}
},
globalToLocal: function() {
return this.getGlobalMatrix(true)._inverseTransform(
Point.read(arguments));
},
localToGlobal: function() {
return this.getGlobalMatrix(true)._transformPoint(
Point.read(arguments));
},
parentToLocal: function() {
return this._matrix._inverseTransform(Point.read(arguments));
},
localToParent: function() {
return this._matrix._transformPoint(Point.read(arguments));
},
fitBounds: function(rectangle, fill) {
rectangle = Rectangle.read(arguments);
var bounds = this.getBounds(),
itemRatio = bounds.height / bounds.width,
rectRatio = rectangle.height / rectangle.width,
scale = (fill ? itemRatio > rectRatio : itemRatio < rectRatio)
? rectangle.width / bounds.width
: rectangle.height / bounds.height,
newBounds = new Rectangle(new Point(),
new Size(bounds.width * scale, bounds.height * scale));
newBounds.setCenter(rectangle.getCenter());
this.setBounds(newBounds);
},
_setStyles: function(ctx) {
var style = this._style,
fillColor = style.getFillColor(),
strokeColor = style.getStrokeColor(),
shadowColor = style.getShadowColor();
if (fillColor)
ctx.fillStyle = fillColor.toCanvasStyle(ctx);
if (strokeColor) {
var strokeWidth = style.getStrokeWidth();
if (strokeWidth > 0) {
ctx.strokeStyle = strokeColor.toCanvasStyle(ctx);
ctx.lineWidth = strokeWidth;
var strokeJoin = style.getStrokeJoin(),
strokeCap = style.getStrokeCap(),
miterLimit = style.getMiterLimit();
if (strokeJoin)
ctx.lineJoin = strokeJoin;
if (strokeCap)
ctx.lineCap = strokeCap;
if (miterLimit)
ctx.miterLimit = miterLimit;
if (paper.support.nativeDash) {
var dashArray = style.getDashArray(),
dashOffset = style.getDashOffset();
if (dashArray && dashArray.length) {
if ('setLineDash' in ctx) {
ctx.setLineDash(dashArray);
ctx.lineDashOffset = dashOffset;
} else {
ctx.mozDash = dashArray;
ctx.mozDashOffset = dashOffset;
}
}
}
}
}
if (shadowColor) {
var shadowBlur = style.getShadowBlur();
if (shadowBlur > 0) {
ctx.shadowColor = shadowColor.toCanvasStyle(ctx);
ctx.shadowBlur = shadowBlur;
var offset = this.getShadowOffset();
ctx.shadowOffsetX = offset.x;
ctx.shadowOffsetY = offset.y;
}
}
},
draw: function(ctx, param, parentStrokeMatrix) {
var updateVersion = this._updateVersion = this._project._updateVersion;
if (!this._visible || this._opacity === 0)
return;
var matrices = param.matrices,
viewMatrix = param.viewMatrix,
matrix = this._matrix,
globalMatrix = matrices[matrices.length - 1].chain(matrix);
if (!globalMatrix.isInvertible())
return;
function getViewMatrix(matrix) {
return viewMatrix ? viewMatrix.chain(matrix) : matrix;
}
matrices.push(globalMatrix);
if (param.updateMatrix) {
globalMatrix._updateVersion = updateVersion;
this._globalMatrix = globalMatrix;
}
var blendMode = this._blendMode,
opacity = this._opacity,
normalBlend = blendMode === 'normal',
nativeBlend = BlendMode.nativeModes[blendMode],
direct = normalBlend && opacity === 1
|| param.dontStart
|| param.clip
|| (nativeBlend || normalBlend && opacity < 1)
&& this._canComposite(),
pixelRatio = param.pixelRatio || 1,
mainCtx, itemOffset, prevOffset;
if (!direct) {
var bounds = this.getStrokeBounds(getViewMatrix(globalMatrix));
if (!bounds.width || !bounds.height)
return;
prevOffset = param.offset;
itemOffset = param.offset = bounds.getTopLeft().floor();
mainCtx = ctx;
ctx = CanvasProvider.getContext(bounds.getSize().ceil().add(1)
.multiply(pixelRatio));
if (pixelRatio !== 1)
ctx.scale(pixelRatio, pixelRatio);
}
ctx.save();
var strokeMatrix = parentStrokeMatrix
? parentStrokeMatrix.chain(matrix)
: !this.getStrokeScaling(true) && getViewMatrix(globalMatrix),
clip = !direct && param.clipItem,
transform = !strokeMatrix || clip;
if (direct) {
ctx.globalAlpha = opacity;
if (nativeBlend)
ctx.globalCompositeOperation = blendMode;
} else if (transform) {
ctx.translate(-itemOffset.x, -itemOffset.y);
}
if (transform)
(direct ? matrix : getViewMatrix(globalMatrix)).applyToContext(ctx);
if (clip)
param.clipItem.draw(ctx, param.extend({ clip: true }));
if (strokeMatrix) {
ctx.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);
var offset = param.offset;
if (offset)
ctx.translate(-offset.x, -offset.y);
}
this._draw(ctx, param, strokeMatrix);
ctx.restore();
matrices.pop();
if (param.clip && !param.dontFinish)
ctx.clip();
if (!direct) {
BlendMode.process(blendMode, ctx, mainCtx, opacity,
itemOffset.subtract(prevOffset).multiply(pixelRatio));
CanvasProvider.release(ctx);
param.offset = prevOffset;
}
},
_isUpdated: function(updateVersion) {
var parent = this._parent;
if (parent instanceof CompoundPath)
return parent._isUpdated(updateVersion);
var updated = this._updateVersion === updateVersion;
if (!updated && parent && parent._visible
&& parent._isUpdated(updateVersion)) {
this._updateVersion = updateVersion;
updated = true;
}
return updated;
},
_drawSelection: function(ctx, matrix, size, selectedItems, updateVersion) {
if ((this._drawSelected || this._boundsSelected)
&& this._isUpdated(updateVersion)) {
var color = this.getSelectedColor(true)
|| this.getLayer().getSelectedColor(true),
mx = matrix.chain(this.getGlobalMatrix(true));
ctx.strokeStyle = ctx.fillStyle = color
? color.toCanvasStyle(ctx) : '#009dec';
if (this._drawSelected)
this._drawSelected(ctx, mx, selectedItems);
if (this._boundsSelected) {
var half = size / 2,
coords = mx._transformCorners(this.getInternalBounds());
ctx.beginPath();
for (var i = 0; i < 8; i++)
ctx[i === 0 ? 'moveTo' : 'lineTo'](coords[i], coords[++i]);
ctx.closePath();
ctx.stroke();
for (var i = 0; i < 8; i++)
ctx.fillRect(coords[i] - half, coords[++i] - half,
size, size);
}
}
},
_canComposite: function() {
return false;
}
}, Base.each(['down', 'drag', 'up', 'move'], function(name) {
this['removeOn' + Base.capitalize(name)] = function() {
var hash = {};
hash[name] = true;
return this.removeOn(hash);
};
}, {
removeOn: function(obj) {
for (var name in obj) {
if (obj[name]) {
var key = 'mouse' + name,
project = this._project,
sets = project._removeSets = project._removeSets || {};
sets[key] = sets[key] || {};
sets[key][this._id] = this;
}
}
return this;
}
}));
var Group = Item.extend({
_class: 'Group',
_selectChildren: true,
_serializeFields: {
children: []
},
initialize: function Group(arg) {
this._children = [];
this._namedChildren = {};
if (!this._initialize(arg))
this.addChildren(Array.isArray(arg) ? arg : arguments);
},
_changed: function _changed(flags) {
_changed.base.call(this, flags);
if (flags & 1026) {
this._clipItem = undefined;
}
},
_getClipItem: function() {
var clipItem = this._clipItem;
if (clipItem === undefined) {
clipItem = null;
for (var i = 0, l = this._children.length; i < l; i++) {
var child = this._children[i];
if (child._clipMask) {
clipItem = child;
break;
}
}
this._clipItem = clipItem;
}
return clipItem;
},
isClipped: function() {
return !!this._getClipItem();
},
setClipped: function(clipped) {
var child = this.getFirstChild();
if (child)
child.setClipMask(clipped);
},
_draw: function(ctx, param) {
var clip = param.clip,
clipItem = !clip && this._getClipItem(),
draw = true;
param = param.extend({ clipItem: clipItem, clip: false });
if (clip) {
if (this._currentPath) {
ctx.currentPath = this._currentPath;
draw = false;
} else {
ctx.beginPath();
param.dontStart = param.dontFinish = true;
}
} else if (clipItem) {
clipItem.draw(ctx, param.extend({ clip: true }));
}
if (draw) {
for (var i = 0, l = this._children.length; i < l; i++) {
var item = this._children[i];
if (item !== clipItem)
item.draw(ctx, param);
}
}
if (clip) {
this._currentPath = ctx.currentPath;
}
}
});
var Layer = Group.extend({
_class: 'Layer',
initialize: function Layer(arg) {
var props = Base.isPlainObject(arg)
? new Base(arg)
: { children: Array.isArray(arg) ? arg : arguments },
insert = props.insert;
props.insert = false;
Group.call(this, props);
if (insert || insert === undefined) {
this._project.addChild(this);
this.activate();
}
},
_remove: function _remove(notifySelf, notifyParent) {
if (this._parent)
return _remove.base.call(this, notifySelf, notifyParent);
if (this._index != null) {
var project = this._project;
if (project._activeLayer === this)
project._activeLayer = this.getNextSibling()
|| this.getPreviousSibling();
Base.splice(project.layers, null, this._index, 1);
this._installEvents(false);
if (notifySelf && project._changes)
this._changed(5);
if (notifyParent) {
project._needsUpdate = true;
}
return true;
}
return false;
},
getNextSibling: function getNextSibling() {
return this._parent ? getNextSibling.base.call(this)
: this._project.layers[this._index + 1] || null;
},
getPreviousSibling: function getPreviousSibling() {
return this._parent ? getPreviousSibling.base.call(this)
: this._project.layers[this._index - 1] || null;
},
isInserted: function isInserted() {
return this._parent ? isInserted.base.call(this) : this._index != null;
},
activate: function() {
this._project._activeLayer = this;
},
_insertSibling: function _insertSibling(index, item, _preserve) {
return !this._parent
? this._project.insertChild(index, item, _preserve)
: _insertSibling.base.call(this, index, item, _preserve);
}
});
var Shape = Item.extend({
_class: 'Shape',
_applyMatrix: false,
_canApplyMatrix: false,
_boundsSelected: true,
_serializeFields: {
type: null,
size: null,
radius: null
},
initialize: function Shape(props) {
this._initialize(props);
},
_equals: function(item) {
return this._type === item._type
&& this._size.equals(item._size)
&& Base.equals(this._radius, item._radius);
},
clone: function(insert) {
var copy = new Shape(Item.NO_INSERT);
copy.setType(this._type);
copy.setSize(this._size);
copy.setRadius(this._radius);
return this._clone(copy, insert);
},
getType: function() {
return this._type;
},
setType: function(type) {
this._type = type;
},
getShape: '#getType',
setShape: '#setType',
getSize: function() {
var size = this._size;
return new LinkedSize(size.width, size.height, this, 'setSize');
},
setSize: function() {
var size = Size.read(arguments);
if (!this._size) {
this._size = size.clone();
} else if (!this._size.equals(size)) {
var type = this._type,
width = size.width,
height = size.height;
if (type === 'rectangle') {
var radius = Size.min(this._radius, size.divide(2));
this._radius.set(radius.width, radius.height);
} else if (type === 'circle') {
width = height = (width + height) / 2;
this._radius = width / 2;
} else if (type === 'ellipse') {
this._radius.set(width / 2, height / 2);
}
this._size.set(width, height);
this._changed(9);
}
},
getRadius: function() {
var rad = this._radius;
return this._type === 'circle'
? rad
: new LinkedSize(rad.width, rad.height, this, 'setRadius');
},
setRadius: function(radius) {
var type = this._type;
if (type === 'circle') {
if (radius === this._radius)
return;
var size = radius * 2;
this._radius = radius;
this._size.set(size, size);
} else {
radius = Size.read(arguments);
if (!this._radius) {
this._radius = radius.clone();
} else {
if (this._radius.equals(radius))
return;
this._radius.set(radius.width, radius.height);
if (type === 'rectangle') {
var size = Size.max(this._size, radius.multiply(2));
this._size.set(size.width, size.height);
} else if (type === 'ellipse') {
this._size.set(radius.width * 2, radius.height * 2);
}
}
}
this._changed(9);
},
isEmpty: function() {
return false;
},
toPath: function(insert) {
var path = this._clone(new Path[Base.capitalize(this._type)]({
center: new Point(),
size: this._size,
radius: this._radius,
insert: false
}), insert);
if (paper.settings.applyMatrix)
path.setApplyMatrix(true);
return path;
},
_draw: function(ctx, param, strokeMatrix) {
var style = this._style,
hasFill = style.hasFill(),
hasStroke = style.hasStroke(),
dontPaint = param.dontFinish || param.clip,
untransformed = !strokeMatrix;
if (hasFill || hasStroke || dontPaint) {
var type = this._type,
radius = this._radius,
isCircle = type === 'circle';
if (!param.dontStart)
ctx.beginPath();
if (untransformed && isCircle) {
ctx.arc(0, 0, radius, 0, Math.PI * 2, true);
} else {
var rx = isCircle ? radius : radius.width,
ry = isCircle ? radius : radius.height,
size = this._size,
width = size.width,
height = size.height;
if (untransformed && type === 'rectangle' && rx === 0 && ry === 0) {
ctx.rect(-width / 2, -height / 2, width, height);
} else {
var x = width / 2,
y = height / 2,
kappa = 1 - 0.5522847498307936,
cx = rx * kappa,
cy = ry * kappa,
c = [
-x, -y + ry,
-x, -y + cy,
-x + cx, -y,
-x + rx, -y,
x - rx, -y,
x - cx, -y,
x, -y + cy,
x, -y + ry,
x, y - ry,
x, y - cy,
x - cx, y,
x - rx, y,
-x + rx, y,
-x + cx, y,
-x, y - cy,
-x, y - ry
];
if (strokeMatrix)
strokeMatrix.transform(c, c, 32);
ctx.moveTo(c[0], c[1]);
ctx.bezierCurveTo(c[2], c[3], c[4], c[5], c[6], c[7]);
if (x !== rx)
ctx.lineTo(c[8], c[9]);
ctx.bezierCurveTo(c[10], c[11], c[12], c[13], c[14], c[15]);
if (y !== ry)
ctx.lineTo(c[16], c[17]);
ctx.bezierCurveTo(c[18], c[19], c[20], c[21], c[22], c[23]);
if (x !== rx)
ctx.lineTo(c[24], c[25]);
ctx.bezierCurveTo(c[26], c[27], c[28], c[29], c[30], c[31]);
}
}
ctx.closePath();
}
if (!dontPaint && (hasFill || hasStroke)) {
this._setStyles(ctx);
if (hasFill) {
ctx.fill(style.getWindingRule());
ctx.shadowColor = 'rgba(0,0,0,0)';
}
if (hasStroke)
ctx.stroke();
}
},
_canComposite: function() {
return !(this.hasFill() && this.hasStroke());
},
_getBounds: function(getter, matrix) {
var rect = new Rectangle(this._size).setCenter(0, 0);
if (getter !== 'getBounds' && this.hasStroke())
rect = rect.expand(this.getStrokeWidth());
return matrix ? matrix._transformBounds(rect) : rect;
}
},
new function() {
function getCornerCenter(that, point, expand) {
var radius = that._radius;
if (!radius.isZero()) {
var halfSize = that._size.divide(2);
for (var i = 0; i < 4; i++) {
var dir = new Point(i & 1 ? 1 : -1, i > 1 ? 1 : -1),
corner = dir.multiply(halfSize),
center = corner.subtract(dir.multiply(radius)),
rect = new Rectangle(corner, center);
if ((expand ? rect.expand(expand) : rect).contains(point))
return center;
}
}
}
function getEllipseRadius(point, radius) {
var angle = point.getAngleInRadians(),
width = radius.width * 2,
height = radius.height * 2,
x = width * Math.sin(angle),
y = height * Math.cos(angle);
return width * height / (2 * Math.sqrt(x * x + y * y));
}
return {
_contains: function _contains(point) {
if (this._type === 'rectangle') {
var center = getCornerCenter(this, point);
return center
? point.subtract(center).divide(this._radius)
.getLength() <= 1
: _contains.base.call(this, point);
} else {
return point.divide(this.size).getLength() <= 0.5;
}
},
_hitTestSelf: function _hitTestSelf(point, options) {
var hit = false;
if (this.hasStroke()) {
var type = this._type,
radius = this._radius,
strokeWidth = this.getStrokeWidth() + 2 * options.tolerance;
if (type === 'rectangle') {
var center = getCornerCenter(this, point, strokeWidth);
if (center) {
var pt = point.subtract(center);
hit = 2 * Math.abs(pt.getLength()
- getEllipseRadius(pt, radius)) <= strokeWidth;
} else {
var rect = new Rectangle(this._size).setCenter(0, 0),
outer = rect.expand(strokeWidth),
inner = rect.expand(-strokeWidth);
hit = outer._containsPoint(point)
&& !inner._containsPoint(point);
}
} else {
if (type === 'ellipse')
radius = getEllipseRadius(point, radius);
hit = 2 * Math.abs(point.getLength() - radius)
<= strokeWidth;
}
}
return hit
? new HitResult('stroke', this)
: _hitTestSelf.base.apply(this, arguments);
}
};
}, {
statics: new function() {
function createShape(type, point, size, radius, args) {
var item = new Shape(Base.getNamed(args));
item._type = type;
item._size = size;
item._radius = radius;
return item.translate(point);
}
return {
Circle: function() {
var center = Point.readNamed(arguments, 'center'),
radius = Base.readNamed(arguments, 'radius');
return createShape('circle', center, new Size(radius * 2), radius,
arguments);
},
Rectangle: function() {
var rect = Rectangle.readNamed(arguments, 'rectangle'),
radius = Size.min(Size.readNamed(arguments, 'radius'),
rect.getSize(true).divide(2));
return createShape('rectangle', rect.getCenter(true),
rect.getSize(true), radius, arguments);
},
Ellipse: function() {
var ellipse = Shape._readEllipse(arguments),
radius = ellipse.radius;
return createShape('ellipse', ellipse.center, radius.multiply(2),
radius, arguments);
},
_readEllipse: function(args) {
var center,
radius;
if (Base.hasNamed(args, 'radius')) {
center = Point.readNamed(args, 'center');
radius = Size.readNamed(args, 'radius');
} else {
var rect = Rectangle.readNamed(args, 'rectangle');
center = rect.getCenter(true);
radius = rect.getSize(true).divide(2);
}
return { center: center, radius: radius };
}
};
}});
var Raster = Item.extend({
_class: 'Raster',
_applyMatrix: false,
_canApplyMatrix: false,
_boundsGetter: 'getBounds',
_boundsSelected: true,
_serializeFields: {
crossOrigin: null,
source: null
},
initialize: function Raster(object, position) {
if (!this._initialize(object,
position !== undefined && Point.read(arguments, 1))) {
if (typeof object === 'string') {
this.setSource(object);
} else {
this.setImage(object);
}
}
if (!this._size) {
this._size = new Size();
this._loaded = false;
}
},
_equals: function(item) {
return this.getSource() === item.getSource();
},
clone: function(insert) {
var copy = new Raster(Item.NO_INSERT),
image = this._image,
canvas = this._canvas;
if (image) {
copy.setImage(image);
} else if (canvas) {
var copyCanvas = CanvasProvider.getCanvas(this._size);
copyCanvas.getContext('2d').drawImage(canvas, 0, 0);
copy.setImage(copyCanvas);
}
copy._crossOrigin = this._crossOrigin;
return this._clone(copy, insert);
},
getSize: function() {
var size = this._size;
return new LinkedSize(size ? size.width : 0, size ? size.height : 0,
this, 'setSize');
},
setSize: function() {
var size = Size.read(arguments);
if (!size.equals(this._size)) {
if (size.width > 0 && size.height > 0) {
var element = this.getElement();
this.setImage(CanvasProvider.getCanvas(size));
if (element)
this.getContext(true).drawImage(element, 0, 0,
size.width, size.height);
} else {
if (this._canvas)
CanvasProvider.release(this._canvas);
this._size = size.clone();
}
}
},
getWidth: function() {
return this._size ? this._size.width : 0;
},
setWidth: function(width) {
this.setSize(width, this.getHeight());
},
getHeight: function() {
return this._size ? this._size.height : 0;
},
setHeight: function(height) {
this.setSize(this.getWidth(), height);
},
isEmpty: function() {
var size = this._size;
return !size || size.width === 0 && size.height === 0;
},
getResolution: function() {
var matrix = this._matrix,
orig = new Point(0, 0).transform(matrix),
u = new Point(1, 0).transform(matrix).subtract(orig),
v = new Point(0, 1).transform(matrix).subtract(orig);
return new Size(
72 / u.getLength(),
72 / v.getLength()
);
},
getPpi: '#getResolution',
getImage: function() {
return this._image;
},
setImage: function(image) {
if (this._canvas)
CanvasProvider.release(this._canvas);
if (image && image.getContext) {
this._image = null;
this._canvas = image;
this._loaded = true;
} else {
this._image = image;
this._canvas = null;
this._loaded = image && image.complete;
}
this._size = new Size(
image ? image.naturalWidth || image.width : 0,
image ? image.naturalHeight || image.height : 0);
this._context = null;
this._changed(521);
},
getCanvas: function() {
if (!this._canvas) {
var ctx = CanvasProvider.getContext(this._size);
try {
if (this._image)
ctx.drawImage(this._image, 0, 0);
this._canvas = ctx.canvas;
} catch (e) {
CanvasProvider.release(ctx);
}
}
return this._canvas;
},
setCanvas: '#setImage',
getContext: function(modify) {
if (!this._context)
this._context = this.getCanvas().getContext('2d');
if (modify) {
this._image = null;
this._changed(513);
}
return this._context;
},
setContext: function(context) {
this._context = context;
},
getSource: function() {
return this._image && this._image.src || this.toDataURL();
},
setSource: function(src) {
var that = this,
crossOrigin = this._crossOrigin,
image;
function loaded() {
var view = that.getView();
if (view) {
paper = view._scope;
that.setImage(image);
that.emit('load');
view.update();
}
}
image = document.getElementById(src) || new Image();
if (crossOrigin)
image.crossOrigin = crossOrigin;
if (image.naturalWidth && image.naturalHeight) {
setTimeout(loaded, 0);
} else {
DomEvent.add(image, { load: loaded });
if (!image.src)
image.src = src;
}
this.setImage(image);
},
getCrossOrigin: function() {
return this._image && this._image.crossOrigin || this._crossOrigin || '';
},
setCrossOrigin: function(crossOrigin) {
this._crossOrigin = crossOrigin;
if (this._image)
this._image.crossOrigin = crossOrigin;
},
getElement: function() {
return this._canvas || this._loaded && this._image;
}
}, {
beans: false,
getSubCanvas: function() {
var rect = Rectangle.read(arguments),
ctx = CanvasProvider.getContext(rect.getSize());
ctx.drawImage(this.getCanvas(), rect.x, rect.y,
rect.width, rect.height, 0, 0, rect.width, rect.height);
return ctx.canvas;
},
getSubRaster: function() {
var rect = Rectangle.read(arguments),
raster = new Raster(Item.NO_INSERT);
raster.setImage(this.getSubCanvas(rect));
raster.translate(rect.getCenter().subtract(this.getSize().divide(2)));
raster._matrix.preConcatenate(this._matrix);
raster.insertAbove(this);
return raster;
},
toDataURL: function() {
var src = this._image && this._image.src;
if (/^data:/.test(src))
return src;
var canvas = this.getCanvas();
return canvas ? canvas.toDataURL.apply(canvas, arguments) : null;
},
drawImage: function(image ) {
var point = Point.read(arguments, 1);
this.getContext(true).drawImage(image, point.x, point.y);
},
getAverageColor: function(object) {
var bounds, path;
if (!object) {
bounds = this.getBounds();
} else if (object instanceof PathItem) {
path = object;
bounds = object.getBounds();
} else if (object.width) {
bounds = new Rectangle(object);
} else if (object.x) {
bounds = new Rectangle(object.x - 0.5, object.y - 0.5, 1, 1);
}
var sampleSize = 32,
width = Math.min(bounds.width, sampleSize),
height = Math.min(bounds.height, sampleSize);
var ctx = Raster._sampleContext;
if (!ctx) {
ctx = Raster._sampleContext = CanvasProvider.getContext(
new Size(sampleSize));
} else {
ctx.clearRect(0, 0, sampleSize + 1, sampleSize + 1);
}
ctx.save();
var matrix = new Matrix()
.scale(width / bounds.width, height / bounds.height)
.translate(-bounds.x, -bounds.y);
matrix.applyToContext(ctx);
if (path)
path.draw(ctx, new Base({ clip: true, matrices: [matrix] }));
this._matrix.applyToContext(ctx);
var element = this.getElement(),
size = this._size;
if (element)
ctx.drawImage(element, -size.width / 2, -size.height / 2);
ctx.restore();
var pixels = ctx.getImageData(0.5, 0.5, Math.ceil(width),
Math.ceil(height)).data,
channels = [0, 0, 0],
total = 0;
for (var i = 0, l = pixels.length; i < l; i += 4) {
var alpha = pixels[i + 3];
total += alpha;
alpha /= 255;
channels[0] += pixels[i] * alpha;
channels[1] += pixels[i + 1] * alpha;
channels[2] += pixels[i + 2] * alpha;
}
for (var i = 0; i < 3; i++)
channels[i] /= total;
return total ? Color.read(channels) : null;
},
getPixel: function() {
var point = Point.read(arguments);
var data = this.getContext().getImageData(point.x, point.y, 1, 1).data;
return new Color('rgb', [data[0] / 255, data[1] / 255, data[2] / 255],
data[3] / 255);
},
setPixel: function() {
var point = Point.read(arguments),
color = Color.read(arguments),
components = color._convert('rgb'),
alpha = color._alpha,
ctx = this.getContext(true),
imageData = ctx.createImageData(1, 1),
data = imageData.data;
data[0] = components[0] * 255;
data[1] = components[1] * 255;
data[2] = components[2] * 255;
data[3] = alpha != null ? alpha * 255 : 255;
ctx.putImageData(imageData, point.x, point.y);
},
createImageData: function() {
var size = Size.read(arguments);
return this.getContext().createImageData(size.width, size.height);
},
getImageData: function() {
var rect = Rectangle.read(arguments);
if (rect.isEmpty())
rect = new Rectangle(this._size);
return this.getContext().getImageData(rect.x, rect.y,
rect.width, rect.height);
},
setImageData: function(data ) {
var point = Point.read(arguments, 1);
this.getContext(true).putImageData(data, point.x, point.y);
},
_getBounds: function(getter, matrix) {
var rect = new Rectangle(this._size).setCenter(0, 0);
return matrix ? matrix._transformBounds(rect) : rect;
},
_hitTestSelf: function(point) {
if (this._contains(point)) {
var that = this;
return new HitResult('pixel', that, {
offset: point.add(that._size.divide(2)).round(),
color: {
get: function() {
return that.getPixel(this.offset);
}
}
});
}
},
_draw: function(ctx) {
var element = this.getElement();
if (element) {
ctx.globalAlpha = this._opacity;
ctx.drawImage(element,
-this._size.width / 2, -this._size.height / 2);
}
},
_canComposite: function() {
return true;
}
});
var PlacedSymbol = Item.extend({
_class: 'PlacedSymbol',
_applyMatrix: false,
_canApplyMatrix: false,
_boundsGetter: { getBounds: 'getStrokeBounds' },
_boundsSelected: true,
_serializeFields: {
symbol: null
},
initialize: function PlacedSymbol(arg0, arg1) {
if (!this._initialize(arg0,
arg1 !== undefined && Point.read(arguments, 1)))
this.setSymbol(arg0 instanceof Symbol ? arg0 : new Symbol(arg0));
},
_equals: function(item) {
return this._symbol === item._symbol;
},
getSymbol: function() {
return this._symbol;
},
setSymbol: function(symbol) {
this._symbol = symbol;
this._changed(9);
},
clone: function(insert) {
var copy = new PlacedSymbol(Item.NO_INSERT);
copy.setSymbol(this._symbol);
return this._clone(copy, insert);
},
isEmpty: function() {
return this._symbol._definition.isEmpty();
},
_getBounds: function(getter, matrix, cacheItem) {
var definition = this.symbol._definition;
return definition._getCachedBounds(getter,
matrix && matrix.chain(definition._matrix), cacheItem);
},
_hitTestSelf: function(point, options) {
var res = this._symbol._definition._hitTest(point, options);
if (res)
res.item = this;
return res;
},
_draw: function(ctx, param) {
this.symbol._definition.draw(ctx, param);
}
});
var HitResult = Base.extend({
_class: 'HitResult',
initialize: function HitResult(type, item, values) {
this.type = type;
this.item = item;
if (values) {
values.enumerable = true;
this.inject(values);
}
},
statics: {
getOptions: function(options) {
return new Base({
type: null,
tolerance: paper.settings.hitTolerance,
fill: !options,
stroke: !options,
segments: !options,
handles: false,
ends: false,
center: false,
bounds: false,
guides: false,
selected: false
}, options);
}
}
});
var Segment = Base.extend({
_class: 'Segment',
beans: true,
initialize: function Segment(arg0, arg1, arg2, arg3, arg4, arg5) {
var count = arguments.length,
point, handleIn, handleOut;
if (count === 0) {
} else if (count === 1) {
if ('point' in arg0) {
point = arg0.point;
handleIn = arg0.handleIn;
handleOut = arg0.handleOut;
} else {
point = arg0;
}
} else if (count === 2 && typeof arg0 === 'number') {
point = arguments;
} else if (count <= 3) {
point = arg0;
handleIn = arg1;
handleOut = arg2;
} else {
point = arg0 !== undefined ? [ arg0, arg1 ] : null;
handleIn = arg2 !== undefined ? [ arg2, arg3 ] : null;
handleOut = arg4 !== undefined ? [ arg4, arg5 ] : null;
}
new SegmentPoint(point, this, '_point');
new SegmentPoint(handleIn, this, '_handleIn');
new SegmentPoint(handleOut, this, '_handleOut');
},
_serialize: function(options) {
return Base.serialize(this.hasHandles()
? [this._point, this._handleIn, this._handleOut]
: this._point,
options, true);
},
_changed: function(point) {
var path = this._path;
if (!path)
return;
var curves = path._curves,
index = this._index,
curve;
if (curves) {
if ((!point || point === this._point || point === this._handleIn)
&& (curve = index > 0 ? curves[index - 1] : path._closed
? curves[curves.length - 1] : null))
curve._changed();
if ((!point || point === this._point || point === this._handleOut)
&& (curve = curves[index]))
curve._changed();
}
path._changed(25);
},
getPoint: function() {
return this._point;
},
setPoint: function() {
var point = Point.read(arguments);
this._point.set(point.x, point.y);
},
getHandleIn: function() {
return this._handleIn;
},
setHandleIn: function() {
var point = Point.read(arguments);
this._handleIn.set(point.x, point.y);
},
getHandleOut: function() {
return this._handleOut;
},
setHandleOut: function() {
var point = Point.read(arguments);
this._handleOut.set(point.x, point.y);
},
hasHandles: function() {
return !this._handleIn.isZero() || !this._handleOut.isZero();
},
clearHandles: function() {
this._handleIn.set(0, 0);
this._handleOut.set(0, 0);
},
_selectionState: 0,
isSelected: function(_point) {
var state = this._selectionState;
return !_point ? !!(state & 7)
: _point === this._point ? !!(state & 4)
: _point === this._handleIn ? !!(state & 1)
: _point === this._handleOut ? !!(state & 2)
: false;
},
setSelected: function(selected, _point) {
var path = this._path,
selected = !!selected,
state = this._selectionState,
oldState = state,
flag = !_point ? 7
: _point === this._point ? 4
: _point === this._handleIn ? 1
: _point === this._handleOut ? 2
: 0;
if (selected) {
state |= flag;
} else {
state &= ~flag;
}
this._selectionState = state;
if (path && state !== oldState) {
path._updateSelection(this, oldState, state);
path._changed(129);
}
},
getIndex: function() {
return this._index !== undefined ? this._index : null;
},
getPath: function() {
return this._path || null;
},
getCurve: function() {
var path = this._path,
index = this._index;
if (path) {
if (index > 0 && !path._closed
&& index === path._segments.length - 1)
index--;
return path.getCurves()[index] || null;
}
return null;
},
getLocation: function() {
var curve = this.getCurve();
return curve
? new CurveLocation(curve, this === curve._segment1 ? 0 : 1)
: null;
},
getNext: function() {
var segments = this._path && this._path._segments;
return segments && (segments[this._index + 1]
|| this._path._closed && segments[0]) || null;
},
getPrevious: function() {
var segments = this._path && this._path._segments;
return segments && (segments[this._index - 1]
|| this._path._closed && segments[segments.length - 1]) || null;
},
isFirst: function() {
return this._index === 0;
},
isLast: function() {
var path = this._path;
return path && this._index === path._segments.length - 1 || false;
},
reverse: function() {
var handleIn = this._handleIn,
handleOut = this._handleOut,
inX = handleIn._x,
inY = handleIn._y;
handleIn.set(handleOut._x, handleOut._y);
handleOut.set(inX, inY);
},
reversed: function() {
return new Segment(this._point, this._handleOut, this._handleIn);
},
remove: function() {
return this._path ? !!this._path.removeSegment(this._index) : false;
},
clone: function() {
return new Segment(this._point, this._handleIn, this._handleOut);
},
equals: function(segment) {
return segment === this || segment && this._class === segment._class
&& this._point.equals(segment._point)
&& this._handleIn.equals(segment._handleIn)
&& this._handleOut.equals(segment._handleOut)
|| false;
},
toString: function() {
var parts = [ 'point: ' + this._point ];
if (!this._handleIn.isZero())
parts.push('handleIn: ' + this._handleIn);
if (!this._handleOut.isZero())
parts.push('handleOut: ' + this._handleOut);
return '{ ' + parts.join(', ') + ' }';
},
transform: function(matrix) {
this._transformCoordinates(matrix, new Array(6), true);
this._changed();
},
_transformCoordinates: function(matrix, coords, change) {
var point = this._point,
handleIn = !change || !this._handleIn.isZero()
? this._handleIn : null,
handleOut = !change || !this._handleOut.isZero()
? this._handleOut : null,
x = point._x,
y = point._y,
i = 2;
coords[0] = x;
coords[1] = y;
if (handleIn) {
coords[i++] = handleIn._x + x;
coords[i++] = handleIn._y + y;
}
if (handleOut) {
coords[i++] = handleOut._x + x;
coords[i++] = handleOut._y + y;
}
if (matrix) {
matrix._transformCoordinates(coords, coords, i / 2);
x = coords[0];
y = coords[1];
if (change) {
point._x = x;
point._y = y;
i = 2;
if (handleIn) {
handleIn._x = coords[i++] - x;
handleIn._y = coords[i++] - y;
}
if (handleOut) {
handleOut._x = coords[i++] - x;
handleOut._y = coords[i++] - y;
}
} else {
if (!handleIn) {
coords[i++] = x;
coords[i++] = y;
}
if (!handleOut) {
coords[i++] = x;
coords[i++] = y;
}
}
}
return coords;
}
});
var SegmentPoint = Point.extend({
initialize: function SegmentPoint(point, owner, key) {
var x, y, selected;
if (!point) {
x = y = 0;
} else if ((x = point[0]) !== undefined) {
y = point[1];
} else {
var pt = point;
if ((x = pt.x) === undefined) {
pt = Point.read(arguments);
x = pt.x;
}
y = pt.y;
selected = pt.selected;
}
this._x = x;
this._y = y;
this._owner = owner;
owner[key] = this;
if (selected)
this.setSelected(true);
},
set: function(x, y) {
this._x = x;
this._y = y;
this._owner._changed(this);
return this;
},
_serialize: function(options) {
var f = options.formatter,
x = f.number(this._x),
y = f.number(this._y);
return this.isSelected()
? { x: x, y: y, selected: true }
: [x, y];
},
getX: function() {
return this._x;
},
setX: function(x) {
this._x = x;
this._owner._changed(this);
},
getY: function() {
return this._y;
},
setY: function(y) {
this._y = y;
this._owner._changed(this);
},
isZero: function() {
return Numerical.isZero(this._x) && Numerical.isZero(this._y);
},
setSelected: function(selected) {
this._owner.setSelected(selected, this);
},
isSelected: function() {
return this._owner.isSelected(this);
}
});
var Curve = Base.extend({
_class: 'Curve',
initialize: function Curve(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7) {
var count = arguments.length,
seg1, seg2,
point1, point2,
handle1, handle2;
if (count === 3) {
this._path = arg0;
seg1 = arg1;
seg2 = arg2;
} else if (count === 0) {
seg1 = new Segment();
seg2 = new Segment();
} else if (count === 1) {
if ('segment1' in arg0) {
seg1 = new Segment(arg0.segment1);
seg2 = new Segment(arg0.segment2);
} else if ('point1' in arg0) {
point1 = arg0.point1;
handle1 = arg0.handle1;
handle2 = arg0.handle2;
point2 = arg0.point2;
} else if (Array.isArray(arg0)) {
point1 = [arg0[0], arg0[1]];
point2 = [arg0[6], arg0[7]];
handle1 = [arg0[2] - arg0[0], arg0[3] - arg0[1]];
handle2 = [arg0[4] - arg0[6], arg0[5] - arg0[7]];
}
} else if (count === 2) {
seg1 = new Segment(arg0);
seg2 = new Segment(arg1);
} else if (count === 4) {
point1 = arg0;
handle1 = arg1;
handle2 = arg2;
point2 = arg3;
} else if (count === 8) {
point1 = [arg0, arg1];
point2 = [arg6, arg7];
handle1 = [arg2 - arg0, arg3 - arg1];
handle2 = [arg4 - arg6, arg5 - arg7];
}
this._segment1 = seg1 || new Segment(point1, null, handle1);
this._segment2 = seg2 || new Segment(point2, handle2, null);
},
_serialize: function(options) {
return Base.serialize(this.hasHandles()
? [this.getPoint1(), this.getHandle1(), this.getHandle2(),
this.getPoint2()]
: [this.getPoint1(), this.getPoint2()],
options, true);
},
_changed: function() {
this._length = this._bounds = undefined;
},
clone: function() {
return new Curve(this._segment1, this._segment2);
},
toString: function() {
var parts = [ 'point1: ' + this._segment1._point ];
if (!this._segment1._handleOut.isZero())
parts.push('handle1: ' + this._segment1._handleOut);
if (!this._segment2._handleIn.isZero())
parts.push('handle2: ' + this._segment2._handleIn);
parts.push('point2: ' + this._segment2._point);
return '{ ' + parts.join(', ') + ' }';
},
remove: function() {
var removed = false;
if (this._path) {
var segment2 = this._segment2,
handleOut = segment2._handleOut;
removed = segment2.remove();
if (removed)
this._segment1._handleOut.set(handleOut.x, handleOut.y);
}
return removed;
},
getPoint1: function() {
return this._segment1._point;
},
setPoint1: function() {
var point = Point.read(arguments);
this._segment1._point.set(point.x, point.y);
},
getPoint2: function() {
return this._segment2._point;
},
setPoint2: function() {
var point = Point.read(arguments);
this._segment2._point.set(point.x, point.y);
},
getHandle1: function() {
return this._segment1._handleOut;
},
setHandle1: function() {
var point = Point.read(arguments);
this._segment1._handleOut.set(point.x, point.y);
},
getHandle2: function() {
return this._segment2._handleIn;
},
setHandle2: function() {
var point = Point.read(arguments);
this._segment2._handleIn.set(point.x, point.y);
},
getSegment1: function() {
return this._segment1;
},
getSegment2: function() {
return this._segment2;
},
getPath: function() {
return this._path;
},
getIndex: function() {
return this._segment1._index;
},
getNext: function() {
var curves = this._path && this._path._curves;
return curves && (curves[this._segment1._index + 1]
|| this._path._closed && curves[0]) || null;
},
getPrevious: function() {
var curves = this._path && this._path._curves;
return curves && (curves[this._segment1._index - 1]
|| this._path._closed && curves[curves.length - 1]) || null;
},
isFirst: function() {
return this._segment1._index === 0;
},
isLast: function() {
var path = this._path;
return path && this._segment1._index === path._curves.length - 1
|| false;
},
isSelected: function() {
return this.getPoint1().isSelected()
&& this.getHandle2().isSelected()
&& this.getHandle2().isSelected()
&& this.getPoint2().isSelected();
},
setSelected: function(selected) {
this.getPoint1().setSelected(selected);
this.getHandle1().setSelected(selected);
this.getHandle2().setSelected(selected);
this.getPoint2().setSelected(selected);
},
getValues: function(matrix) {
return Curve.getValues(this._segment1, this._segment2, matrix);
},
getPoints: function() {
var coords = this.getValues(),
points = [];
for (var i = 0; i < 8; i += 2)
points.push(new Point(coords[i], coords[i + 1]));
return points;
},
getLength: function() {
if (this._length == null)
this._length = Curve.getLength(this.getValues(), 0, 1);
return this._length;
},
getArea: function() {
return Curve.getArea(this.getValues());
},
getLine: function() {
return new Line(this._segment1._point, this._segment2._point);
},
getPart: function(from, to) {
return new Curve(Curve.getPart(this.getValues(), from, to));
},
getPartLength: function(from, to) {
return Curve.getLength(this.getValues(), from, to);
},
getIntersections: function(curve) {
return Curve._getIntersections(this.getValues(),
curve && curve !== this ? curve.getValues() : null,
this, curve, [], {});
},
_getParameter: function(offset, isParameter) {
return isParameter
? offset
: offset && offset.curve === this
? offset.parameter
: offset === undefined && isParameter === undefined
? 0.5
: this.getParameterAt(offset, 0);
},
divide: function(offset, isParameter, _setHandles) {
var parameter = this._getParameter(offset, isParameter),
tMin = 4e-7,
tMax = 1 - tMin,
res = null;
if (parameter >= tMin && parameter <= tMax) {
var parts = Curve.subdivide(this.getValues(), parameter),
left = parts[0],
right = parts[1],
setHandles = _setHandles || this.hasHandles(),
segment1 = this._segment1,
segment2 = this._segment2,
path = this._path;
if (setHandles) {
segment1._handleOut.set(left[2] - left[0],
left[3] - left[1]);
segment2._handleIn.set(right[4] - right[6],
right[5] - right[7]);
}
var x = left[6], y = left[7],
segment = new Segment(new Point(x, y),
setHandles && new Point(left[4] - x, left[5] - y),
setHandles && new Point(right[2] - x, right[3] - y));
if (path) {
path.insert(segment1._index + 1, segment);
res = this.getNext();
} else {
this._segment2 = segment;
res = new Curve(segment, segment2);
}
}
return res;
},
split: function(offset, isParameter) {
return this._path
? this._path.split(this._segment1._index,
this._getParameter(offset, isParameter))
: null;
},
reversed: function() {
return new Curve(this._segment2.reversed(), this._segment1.reversed());
},
clearHandles: function() {
this._segment1._handleOut.set(0, 0);
this._segment2._handleIn.set(0, 0);
},
statics: {
getValues: function(segment1, segment2, matrix) {
var p1 = segment1._point,
h1 = segment1._handleOut,
h2 = segment2._handleIn,
p2 = segment2._point,
values = [
p1._x, p1._y,
p1._x + h1._x, p1._y + h1._y,
p2._x + h2._x, p2._y + h2._y,
p2._x, p2._y
];
if (matrix)
matrix._transformCoordinates(values, values, 4);
return values;
},
subdivide: function(v, t) {
var p1x = v[0], p1y = v[1],
c1x = v[2], c1y = v[3],
c2x = v[4], c2y = v[5],
p2x = v[6], p2y = v[7];
if (t === undefined)
t = 0.5;
var u = 1 - t,
p3x = u * p1x + t * c1x, p3y = u * p1y + t * c1y,
p4x = u * c1x + t * c2x, p4y = u * c1y + t * c2y,
p5x = u * c2x + t * p2x, p5y = u * c2y + t * p2y,
p6x = u * p3x + t * p4x, p6y = u * p3y + t * p4y,
p7x = u * p4x + t * p5x, p7y = u * p4y + t * p5y,
p8x = u * p6x + t * p7x, p8y = u * p6y + t * p7y;
return [
[p1x, p1y, p3x, p3y, p6x, p6y, p8x, p8y],
[p8x, p8y, p7x, p7y, p5x, p5y, p2x, p2y]
];
},
solveCubic: function (v, coord, val, roots, min, max) {
var p1 = v[coord],
c1 = v[coord + 2],
c2 = v[coord + 4],
p2 = v[coord + 6],
c = 3 * (c1 - p1),
b = 3 * (c2 - c1) - c,
a = p2 - p1 - c - b;
return Numerical.solveCubic(a, b, c, p1 - val, roots, min, max);
},
getParameterOf: function(v, point) {
var p1 = new Point(v[0], v[1]),
p2 = new Point(v[6], v[7]),
epsilon = 1e-12,
t = point.isClose(p1, epsilon) ? 0
: point.isClose(p2, epsilon) ? 1
: null;
if (t !== null)
return t;
var coords = [point.x, point.y],
roots = [],
geomEpsilon = 2e-7;
for (var c = 0; c < 2; c++) {
var count = Curve.solveCubic(v, c, coords[c], roots, 0, 1);
for (var i = 0; i < count; i++) {
t = roots[i];
if (point.isClose(Curve.getPoint(v, t), geomEpsilon))
return t;
}
}
return point.isClose(p1, geomEpsilon) ? 0
: point.isClose(p2, geomEpsilon) ? 1
: null;
},
getNearestParameter: function(v, point) {
if (Curve.isStraight(v)) {
var p1x = v[0], p1y = v[1],
p2x = v[6], p2y = v[7],
vx = p2x - p1x, vy = p2y - p1y,
det = vx * vx + vy * vy;
if (det === 0)
return 0;
var u = ((point.x - p1x) * vx + (point.y - p1y) * vy) / det;
return u < 1e-12 ? 0
: u > 0.999999999999 ? 1
: Curve.getParameterOf(v,
new Point(p1x + u * vx, p1y + u * vy));
}
var count = 100,
minDist = Infinity,
minT = 0;
function refine(t) {
if (t >= 0 && t <= 1) {
var dist = point.getDistance(Curve.getPoint(v, t), true);
if (dist < minDist) {
minDist = dist;
minT = t;
return true;
}
}
}
for (var i = 0; i <= count; i++)
refine(i / count);
var step = 1 / (count * 2);
while (step > 4e-7) {
if (!refine(minT - step) && !refine(minT + step))
step /= 2;
}
return minT;
},
getPart: function(v, from, to) {
var flip = from > to;
if (flip) {
var tmp = from;
from = to;
to = tmp;
}
if (from > 0)
v = Curve.subdivide(v, from)[1];
if (to < 1)
v = Curve.subdivide(v, (to - from) / (1 - from))[0];
return flip
? [v[6], v[7], v[4], v[5], v[2], v[3], v[0], v[1]]
: v;
},
hasHandles: function(v) {
var isZero = Numerical.isZero;
return !(isZero(v[0] - v[2]) && isZero(v[1] - v[3])
&& isZero(v[4] - v[6]) && isZero(v[5] - v[7]));
},
isFlatEnough: function(v, tolerance) {
var p1x = v[0], p1y = v[1],
c1x = v[2], c1y = v[3],
c2x = v[4], c2y = v[5],
p2x = v[6], p2y = v[7],
ux = 3 * c1x - 2 * p1x - p2x,
uy = 3 * c1y - 2 * p1y - p2y,
vx = 3 * c2x - 2 * p2x - p1x,
vy = 3 * c2y - 2 * p2y - p1y;
return Math.max(ux * ux, vx * vx) + Math.max(uy * uy, vy * vy)
< 10 * tolerance * tolerance;
},
getArea: function(v) {
var p1x = v[0], p1y = v[1],
p2x = v[6], p2y = v[7],
h1x = (v[2] + p1x) / 2,
h1y = (v[3] + p1y) / 2,
h2x = (v[4] + v[6]) / 2,
h2y = (v[5] + v[7]) / 2;
return 6 * ((p1x - h1x) * (h1y + p1y)
+ (h1x - h2x) * (h2y + h1y)
+ (h2x - p2x) * (p2y + h2y)) / 10;
},
getBounds: function(v) {
var min = v.slice(0, 2),
max = min.slice(),
roots = [0, 0];
for (var i = 0; i < 2; i++)
Curve._addBounds(v[i], v[i + 2], v[i + 4], v[i + 6],
i, 0, min, max, roots);
return new Rectangle(min[0], min[1], max[0] - min[0], max[1] - min[1]);
},
_addBounds: function(v0, v1, v2, v3, coord, padding, min, max, roots) {
function add(value, padding) {
var left = value - padding,
right = value + padding;
if (left < min[coord])
min[coord] = left;
if (right > max[coord])
max[coord] = right;
}
var a = 3 * (v1 - v2) - v0 + v3,
b = 2 * (v0 + v2) - 4 * v1,
c = v1 - v0,
count = Numerical.solveQuadratic(a, b, c, roots),
tMin = 4e-7,
tMax = 1 - tMin;
add(v3, 0);
for (var i = 0; i < count; i++) {
var t = roots[i],
u = 1 - t;
if (tMin < t && t < tMax)
add(u * u * u * v0
+ 3 * u * u * t * v1
+ 3 * u * t * t * v2
+ t * t * t * v3,
padding);
}
}
}}, Base.each(
['getBounds', 'getStrokeBounds', 'getHandleBounds', 'getRoughBounds'],
function(name) {
this[name] = function() {
if (!this._bounds)
this._bounds = {};
var bounds = this._bounds[name];
if (!bounds) {
var path = this._path;
bounds = this._bounds[name] = Path[name](
[this._segment1, this._segment2], false,
path && path.getStyle());
}
return bounds.clone();
};
},
{
}), Base.each({
isStraight: function(l, h1, h2) {
if (h1.isZero() && h2.isZero()) {
return true;
} else if (l.isZero()) {
return false;
} else if (h1.isCollinear(l) && h2.isCollinear(l)) {
var div = l.dot(l),
p1 = l.dot(h1) / div,
p2 = l.dot(h2) / div;
return p1 >= 0 && p1 <= 1 && p2 <= 0 && p2 >= -1;
}
return false;
},
isLinear: function(l, h1, h2) {
var third = l.divide(3);
return h1.equals(third) && h2.negate().equals(third);
}
}, function(test, name) {
this[name] = function() {
var seg1 = this._segment1,
seg2 = this._segment2;
return test(seg2._point.subtract(seg1._point),
seg1._handleOut, seg2._handleIn);
};
this.statics[name] = function(v) {
var p1x = v[0], p1y = v[1],
p2x = v[6], p2y = v[7];
return test(new Point(p2x - p1x, p2y - p1y),
new Point(v[2] - p1x, v[3] - p1y),
new Point(v[4] - p2x, v[5] - p2y));
};
}, {
statics: {},
hasHandles: function() {
return !this._segment1._handleOut.isZero()
|| !this._segment2._handleIn.isZero();
},
isCollinear: function(curve) {
return curve && this.isStraight() && curve.isStraight()
&& this.getLine().isCollinear(curve.getLine());
},
isHorizontal: function() {
return this.isStraight() && Math.abs(this.getTangentAt(0.5, true).y)
< 1e-7;
},
isVertical: function() {
return this.isStraight() && Math.abs(this.getTangentAt(0.5, true).x)
< 1e-7;
}
}), {
beans: false,
getParameterAt: function(offset, start) {
return Curve.getParameterAt(this.getValues(), offset, start);
},
getParameterOf: function() {
return Curve.getParameterOf(this.getValues(), Point.read(arguments));
},
getLocationAt: function(offset, isParameter) {
var t = isParameter ? offset : this.getParameterAt(offset);
return t != null && t >= 0 && t <= 1
? new CurveLocation(this, t)
: null;
},
getLocationOf: function() {
return this.getLocationAt(this.getParameterOf(Point.read(arguments)),
true);
},
getOffsetOf: function() {
var loc = this.getLocationOf.apply(this, arguments);
return loc ? loc.getOffset() : null;
},
getNearestLocation: function() {
var point = Point.read(arguments),
values = this.getValues(),
t = Curve.getNearestParameter(values, point),
pt = Curve.getPoint(values, t);
return new CurveLocation(this, t, pt, null, point.getDistance(pt));
},
getNearestPoint: function() {
return this.getNearestLocation.apply(this, arguments).getPoint();
}
},
new function() {
var methods = ['getPoint', 'getTangent', 'getNormal', 'getWeightedTangent',
'getWeightedNormal', 'getCurvature'];
return Base.each(methods,
function(name) {
this[name + 'At'] = function(offset, isParameter) {
var values = this.getValues();
return Curve[name](values, isParameter ? offset
: Curve.getParameterAt(values, offset, 0));
};
}, {
statics: {
evaluateMethods: methods
}
})
},
new function() {
function getLengthIntegrand(v) {
var p1x = v[0], p1y = v[1],
c1x = v[2], c1y = v[3],
c2x = v[4], c2y = v[5],
p2x = v[6], p2y = v[7],
ax = 9 * (c1x - c2x) + 3 * (p2x - p1x),
bx = 6 * (p1x + c2x) - 12 * c1x,
cx = 3 * (c1x - p1x),
ay = 9 * (c1y - c2y) + 3 * (p2y - p1y),
by = 6 * (p1y + c2y) - 12 * c1y,
cy = 3 * (c1y - p1y);
return function(t) {
var dx = (ax * t + bx) * t + cx,
dy = (ay * t + by) * t + cy;
return Math.sqrt(dx * dx + dy * dy);
};
}
function getIterations(a, b) {
return Math.max(2, Math.min(16, Math.ceil(Math.abs(b - a) * 32)));
}
function evaluate(v, t, type, normalized) {
if (t == null || t < 0 || t > 1)
return null;
var p1x = v[0], p1y = v[1],
c1x = v[2], c1y = v[3],
c2x = v[4], c2y = v[5],
p2x = v[6], p2y = v[7],
tMin = 4e-7,
tMax = 1 - tMin,
x, y;
if (type === 0 && (t < tMin || t > tMax)) {
var isZero = t < tMin;
x = isZero ? p1x : p2x;
y = isZero ? p1y : p2y;
} else {
var cx = 3 * (c1x - p1x),
bx = 3 * (c2x - c1x) - cx,
ax = p2x - p1x - cx - bx,
cy = 3 * (c1y - p1y),
by = 3 * (c2y - c1y) - cy,
ay = p2y - p1y - cy - by;
if (type === 0) {
x = ((ax * t + bx) * t + cx) * t + p1x;
y = ((ay * t + by) * t + cy) * t + p1y;
} else {
if (t < tMin) {
x = cx;
y = cy;
} else if (t > tMax) {
x = 3 * (p2x - c2x);
y = 3 * (p2y - c2y);
} else {
x = (3 * ax * t + 2 * bx) * t + cx;
y = (3 * ay * t + 2 * by) * t + cy;
}
if (normalized) {
if (x === 0 && y === 0 && (t < tMin || t > tMax)) {
x = c2x - c1x;
y = c2y - c1y;
}
var len = Math.sqrt(x * x + y * y);
if (len) {
x /= len;
y /= len;
}
}
if (type === 3) {
var x2 = 6 * ax * t + 2 * bx,
y2 = 6 * ay * t + 2 * by,
d = Math.pow(x * x + y * y, 3 / 2);
x = d !== 0 ? (x * y2 - y * x2) / d : 0;
y = 0;
}
}
}
return type === 2 ? new Point(y, -x) : new Point(x, y);
}
return { statics: {
getLength: function(v, a, b) {
if (a === undefined)
a = 0;
if (b === undefined)
b = 1;
if (a === 0 && b === 1 && Curve.isStraight(v)) {
var dx = v[6] - v[0],
dy = v[7] - v[1];
return Math.sqrt(dx * dx + dy * dy);
}
var ds = getLengthIntegrand(v);
return Numerical.integrate(ds, a, b, getIterations(a, b));
},
getParameterAt: function(v, offset, start) {
if (start === undefined)
start = offset < 0 ? 1 : 0
if (offset === 0)
return start;
var abs = Math.abs,
forward = offset > 0,
a = forward ? start : 0,
b = forward ? 1 : start,
ds = getLengthIntegrand(v),
rangeLength = Numerical.integrate(ds, a, b,
getIterations(a, b));
if (abs(offset - rangeLength) < 1e-12) {
return forward ? b : a;
} else if (abs(offset) > rangeLength) {
return null;
}
var guess = offset / rangeLength,
length = 0;
function f(t) {
length += Numerical.integrate(ds, start, t,
getIterations(start, t));
start = t;
return length - offset;
}
return Numerical.findRoot(f, ds, start + guess, a, b, 32,
1e-12);
},
getPoint: function(v, t) {
return evaluate(v, t, 0, false);
},
getTangent: function(v, t) {
return evaluate(v, t, 1, true);
},
getWeightedTangent: function(v, t) {
return evaluate(v, t, 1, false);
},
getNormal: function(v, t) {
return evaluate(v, t, 2, true);
},
getWeightedNormal: function(v, t) {
return evaluate(v, t, 2, false);
},
getCurvature: function(v, t) {
return evaluate(v, t, 3, false).x;
}
}};
},
new function() {
function addLocation(locations, param, v1, c1, t1, p1, v2, c2, t2, p2,
overlap) {
var startConnected = param.startConnected,
endConnected = param.endConnected,
tMin = 4e-7,
tMax = 1 - tMin;
if (t1 == null)
t1 = Curve.getParameterOf(v1, p1);
if (t1 !== null && t1 >= (startConnected ? tMin : 0) &&
t1 <= (endConnected ? tMax : 1)) {
if (t2 == null)
t2 = Curve.getParameterOf(v2, p2);
if (t2 !== null && t2 >= (endConnected ? tMin : 0) &&
t2 <= (startConnected ? tMax : 1)) {
var renormalize = param.renormalize;
if (renormalize) {
var res = renormalize(t1, t2);
t1 = res[0];
t2 = res[1];
}
var loc1 = new CurveLocation(c1, t1,
p1 || Curve.getPoint(v1, t1), overlap),
loc2 = new CurveLocation(c2, t2,
p2 || Curve.getPoint(v2, t2), overlap),
flip = loc1.getPath() === loc2.getPath()
&& loc1.getIndex() > loc2.getIndex(),
loc = flip ? loc2 : loc1,
include = param.include;
loc1._intersection = loc2;
loc2._intersection = loc1;
if (!include || include(loc)) {
CurveLocation.insert(locations, loc, true);
}
}
}
}
function addCurveIntersections(v1, v2, c1, c2, locations, param,
tMin, tMax, uMin, uMax, oldTDiff, reverse, recursion) {
if (++recursion >= 24)
return;
var q0x = v2[0], q0y = v2[1], q3x = v2[6], q3y = v2[7],
getSignedDistance = Line.getSignedDistance,
d1 = getSignedDistance(q0x, q0y, q3x, q3y, v2[2], v2[3]),
d2 = getSignedDistance(q0x, q0y, q3x, q3y, v2[4], v2[5]),
factor = d1 * d2 > 0 ? 3 / 4 : 4 / 9,
dMin = factor * Math.min(0, d1, d2),
dMax = factor * Math.max(0, d1, d2),
dp0 = getSignedDistance(q0x, q0y, q3x, q3y, v1[0], v1[1]),
dp1 = getSignedDistance(q0x, q0y, q3x, q3y, v1[2], v1[3]),
dp2 = getSignedDistance(q0x, q0y, q3x, q3y, v1[4], v1[5]),
dp3 = getSignedDistance(q0x, q0y, q3x, q3y, v1[6], v1[7]),
hull = getConvexHull(dp0, dp1, dp2, dp3),
top = hull[0],
bottom = hull[1],
tMinClip,
tMaxClip;
if ((tMinClip = clipConvexHull(top, bottom, dMin, dMax)) == null ||
(tMaxClip = clipConvexHull(top.reverse(), bottom.reverse(),
dMin, dMax)) == null)
return;
v1 = Curve.getPart(v1, tMinClip, tMaxClip);
var tDiff = tMaxClip - tMinClip,
tMinNew = tMin + (tMax - tMin) * tMinClip,
tMaxNew = tMin + (tMax - tMin) * tMaxClip;
if (oldTDiff > 0.5 && tDiff > 0.5) {
if (tMaxNew - tMinNew > uMax - uMin) {
var parts = Curve.subdivide(v1, 0.5),
t = tMinNew + (tMaxNew - tMinNew) / 2;
addCurveIntersections(
v2, parts[0], c2, c1, locations, param,
uMin, uMax, tMinNew, t, tDiff, !reverse, recursion);
addCurveIntersections(
v2, parts[1], c2, c1, locations, param,
uMin, uMax, t, tMaxNew, tDiff, !reverse, recursion);
} else {
var parts = Curve.subdivide(v2, 0.5),
t = uMin + (uMax - uMin) / 2;
addCurveIntersections(
parts[0], v1, c2, c1, locations, param,
uMin, t, tMinNew, tMaxNew, tDiff, !reverse, recursion);
addCurveIntersections(
parts[1], v1, c2, c1, locations, param,
t, uMax, tMinNew, tMaxNew, tDiff, !reverse, recursion);
}
} else if (Math.max(uMax - uMin, tMaxNew - tMinNew)
< 1e-7) {
var t1 = tMinNew + (tMaxNew - tMinNew) / 2,
t2 = uMin + (uMax - uMin) / 2;
v1 = c1.getValues();
v2 = c2.getValues();
addLocation(locations, param,
reverse ? v2 : v1, reverse ? c2 : c1, reverse ? t2 : t1, null,
reverse ? v1 : v2, reverse ? c1 : c2, reverse ? t1 : t2, null);
} else if (tDiff > 1e-12) {
addCurveIntersections(v2, v1, c2, c1, locations, param,
uMin, uMax, tMinNew, tMaxNew, tDiff, !reverse, recursion);
}
}
function getConvexHull(dq0, dq1, dq2, dq3) {
var p0 = [ 0, dq0 ],
p1 = [ 1 / 3, dq1 ],
p2 = [ 2 / 3, dq2 ],
p3 = [ 1, dq3 ],
dist1 = dq1 - (2 * dq0 + dq3) / 3,
dist2 = dq2 - (dq0 + 2 * dq3) / 3,
hull;
if (dist1 * dist2 < 0) {
hull = [[p0, p1, p3], [p0, p2, p3]];
} else {
var distRatio = dist1 / dist2;
hull = [
distRatio >= 2 ? [p0, p1, p3]
: distRatio <= .5 ? [p0, p2, p3]
: [p0, p1, p2, p3],
[p0, p3]
];
}
return (dist1 || dist2) < 0 ? hull.reverse() : hull;
}
function clipConvexHull(hullTop, hullBottom, dMin, dMax) {
if (hullTop[0][1] < dMin) {
return clipConvexHullPart(hullTop, true, dMin);
} else if (hullBottom[0][1] > dMax) {
return clipConvexHullPart(hullBottom, false, dMax);
} else {
return hullTop[0][0];
}
}
function clipConvexHullPart(part, top, threshold) {
var px = part[0][0],
py = part[0][1];
for (var i = 1, l = part.length; i < l; i++) {
var qx = part[i][0],
qy = part[i][1];
if (top ? qy >= threshold : qy <= threshold) {
return qy === threshold ? qx
: px + (threshold - py) * (qx - px) / (qy - py);
}
px = qx;
py = qy;
}
return null;
}
function addCurveLineIntersections(v1, v2, c1, c2, locations, param) {
var flip = Curve.isStraight(v1),
vc = flip ? v2 : v1,
vl = flip ? v1 : v2,
lx1 = vl[0], ly1 = vl[1],
lx2 = vl[6], ly2 = vl[7],
ldx = lx2 - lx1,
ldy = ly2 - ly1,
angle = Math.atan2(-ldy, ldx),
sin = Math.sin(angle),
cos = Math.cos(angle),
rvc = [];
for(var i = 0; i < 8; i += 2) {
var x = vc[i] - lx1,
y = vc[i + 1] - ly1;
rvc.push(
x * cos - y * sin,
x * sin + y * cos);
}
var roots = [],
count = Curve.solveCubic(rvc, 1, 0, roots, 0, 1);
for (var i = 0; i < count; i++) {
var tc = roots[i],
pc = Curve.getPoint(vc, tc),
tl = Curve.getParameterOf(vl, pc);
if (tl !== null) {
var pl = Curve.getPoint(vl, tl),
t1 = flip ? tl : tc,
t2 = flip ? tc : tl;
if (!param.endConnected || t2 > Numerical.CURVETIME_EPSILON) {
addLocation(locations, param,
v1, c1, t1, flip ? pl : pc,
v2, c2, t2, flip ? pc : pl);
}
}
}
}
function addLineIntersection(v1, v2, c1, c2, locations, param) {
var pt = Line.intersect(
v1[0], v1[1], v1[6], v1[7],
v2[0], v2[1], v2[6], v2[7]);
if (pt) {
addLocation(locations, param, v1, c1, null, pt, v2, c2, null, pt);
}
}
return { statics: {
_getIntersections: function(v1, v2, c1, c2, locations, param) {
if (!v2) {
return Curve._getSelfIntersection(v1, c1, locations, param);
}
var c1p1x = v1[0], c1p1y = v1[1],
c1p2x = v1[6], c1p2y = v1[7],
c2p1x = v2[0], c2p1y = v2[1],
c2p2x = v2[6], c2p2y = v2[7],
c1s1x = (3 * v1[2] + c1p1x) / 4,
c1s1y = (3 * v1[3] + c1p1y) / 4,
c1s2x = (3 * v1[4] + c1p2x) / 4,
c1s2y = (3 * v1[5] + c1p2y) / 4,
c2s1x = (3 * v2[2] + c2p1x) / 4,
c2s1y = (3 * v2[3] + c2p1y) / 4,
c2s2x = (3 * v2[4] + c2p2x) / 4,
c2s2y = (3 * v2[5] + c2p2y) / 4,
min = Math.min,
max = Math.max;
if (!( max(c1p1x, c1s1x, c1s2x, c1p2x) >=
min(c2p1x, c2s1x, c2s2x, c2p2x) &&
min(c1p1x, c1s1x, c1s2x, c1p2x) <=
max(c2p1x, c2s1x, c2s2x, c2p2x) &&
max(c1p1y, c1s1y, c1s2y, c1p2y) >=
min(c2p1y, c2s1y, c2s2y, c2p2y) &&
min(c1p1y, c1s1y, c1s2y, c1p2y) <=
max(c2p1y, c2s1y, c2s2y, c2p2y)))
return locations;
if (!param.startConnected && !param.endConnected) {
var overlaps = Curve.getOverlaps(v1, v2);
if (overlaps) {
for (var i = 0; i < 2; i++) {
var overlap = overlaps[i];
addLocation(locations, param,
v1, c1, overlap[0], null,
v2, c2, overlap[1], null, true);
}
return locations;
}
}
var straight1 = Curve.isStraight(v1),
straight2 = Curve.isStraight(v2),
straight = straight1 && straight2,
epsilon = 1e-12,
before = locations.length;
(straight
? addLineIntersection
: straight1 || straight2
? addCurveLineIntersections
: addCurveIntersections)(
v1, v2, c1, c2, locations, param,
0, 1, 0, 1, 0, false, 0);
if (straight && locations.length > before)
return locations;
var c1p1 = new Point(c1p1x, c1p1y),
c1p2 = new Point(c1p2x, c1p2y),
c2p1 = new Point(c2p1x, c2p1y),
c2p2 = new Point(c2p2x, c2p2y);
if (c1p1.isClose(c2p1, epsilon))
addLocation(locations, param, v1, c1, 0, c1p1, v2, c2, 0, c2p1);
if (!param.startConnected && c1p1.isClose(c2p2, epsilon))
addLocation(locations, param, v1, c1, 0, c1p1, v2, c2, 1, c2p2);
if (!param.endConnected && c1p2.isClose(c2p1, epsilon))
addLocation(locations, param, v1, c1, 1, c1p2, v2, c2, 0, c2p1);
if (c1p2.isClose(c2p2, epsilon))
addLocation(locations, param, v1, c1, 1, c1p2, v2, c2, 1, c2p2);
return locations;
},
_getSelfIntersection: function(v1, c1, locations, param) {
var p1x = v1[0], p1y = v1[1],
h1x = v1[2], h1y = v1[3],
h2x = v1[4], h2y = v1[5],
p2x = v1[6], p2y = v1[7];
var line = new Line(p1x, p1y, p2x, p2y, false),
side1 = line.getSide(new Point(h1x, h1y), true),
side2 = line.getSide(new Point(h2x, h2y), true);
if (side1 === side2) {
var edgeSum = (p1x - h2x) * (h1y - p2y)
+ (h1x - p2x) * (h2y - p1y);
if (edgeSum * side1 > 0)
return locations;
}
var ax = p2x - 3 * h2x + 3 * h1x - p1x,
bx = h2x - 2 * h1x + p1x,
cx = h1x - p1x,
ay = p2y - 3 * h2y + 3 * h1y - p1y,
by = h2y - 2 * h1y + p1y,
cy = h1y - p1y,
ac = ay * cx - ax * cy,
ab = ay * bx - ax * by,
bc = by * cx - bx * cy;
if (ac * ac - 4 * ab * bc < 0) {
var roots = [],
tSplit,
count = Numerical.solveCubic(
ax * ax + ay * ay,
3 * (ax * bx + ay * by),
2 * (bx * bx + by * by) + ax * cx + ay * cy,
bx * cx + by * cy,
roots, 0, 1);
if (count > 0) {
for (var i = 0, maxCurvature = 0; i < count; i++) {
var curvature = Math.abs(
c1.getCurvatureAt(roots[i], true));
if (curvature > maxCurvature) {
maxCurvature = curvature;
tSplit = roots[i];
}
}
var parts = Curve.subdivide(v1, tSplit);
param.endConnected = true;
param.renormalize = function(t1, t2) {
return [t1 * tSplit, t2 * (1 - tSplit) + tSplit];
};
Curve._getIntersections(parts[0], parts[1], c1, c1,
locations, param);
}
}
return locations;
},
getOverlaps: function(v1, v2) {
var abs = Math.abs,
timeEpsilon = 4e-7,
geomEpsilon = 2e-7,
straight1 = Curve.isStraight(v1),
straight2 = Curve.isStraight(v2),
straight = straight1 && straight2;
function getLineLengthSquared(v) {
var x = v[6] - v[0],
y = v[7] - v[1];
return x * x + y * y;
}
if (straight) {
var flip = getLineLengthSquared(v1) < getLineLengthSquared(v2),
l1 = flip ? v2 : v1,
l2 = flip ? v1 : v2,
line = new Line(l1[0], l1[1], l1[6], l1[7]);
if (line.getDistance(new Point(l2[0], l2[1])) > geomEpsilon ||
line.getDistance(new Point(l2[6], l2[7])) > geomEpsilon)
return null;
} else if (straight1 ^ straight2) {
return null;
}
var v = [v1, v2],
pairs = [];
for (var i = 0, t1 = 0;
i < 2 && pairs.length < 2;
i += t1 === 0 ? 0 : 1, t1 = t1 ^ 1) {
var t2 = Curve.getParameterOf(v[i ^ 1], new Point(
v[i][t1 === 0 ? 0 : 6],
v[i][t1 === 0 ? 1 : 7]));
if (t2 != null) {
var pair = i === 0 ? [t1, t2] : [t2, t1];
if (pairs.length === 0 ||
abs(pair[0] - pairs[0][0]) > timeEpsilon &&
abs(pair[1] - pairs[0][1]) > timeEpsilon)
pairs.push(pair);
}
if (i === 1 && pairs.length === 0)
break;
}
if (pairs.length !== 2) {
pairs = null;
} else if (!straight) {
var o1 = Curve.getPart(v1, pairs[0][0], pairs[1][0]),
o2 = Curve.getPart(v2, pairs[0][1], pairs[1][1]);
if (abs(o2[2] - o1[2]) > geomEpsilon ||
abs(o2[3] - o1[3]) > geomEpsilon ||
abs(o2[4] - o1[4]) > geomEpsilon ||
abs(o2[5] - o1[5]) > geomEpsilon)
pairs = null;
}
return pairs;
}
}};
});
var CurveLocation = Base.extend({
_class: 'CurveLocation',
beans: true,
initialize: function CurveLocation(curve, parameter, point,
_overlap, _distance) {
if (parameter > 0.9999996) {
var next = curve.getNext();
if (next) {
parameter = 0;
curve = next;
}
}
this._id = UID.get(CurveLocation);
this._setCurve(curve);
this._parameter = parameter;
this._point = point || curve.getPointAt(parameter, true);
this._overlap = _overlap;
this._distance = _distance;
this._intersection = this._next = this._prev = null;
},
_setCurve: function(curve) {
var path = curve._path;
this._version = path ? path._version : 0;
this._curve = curve;
this._segment = null;
this._segment1 = curve._segment1;
this._segment2 = curve._segment2;
},
_setSegment: function(segment) {
this._setCurve(segment.getCurve());
this._segment = segment;
this._parameter = segment === this._segment1 ? 0 : 1;
this._point = segment._point.clone();
},
getSegment: function() {
var curve = this.getCurve(),
segment = this._segment;
if (!segment) {
var parameter = this.getParameter();
if (parameter === 0) {
segment = curve._segment1;
} else if (parameter === 1) {
segment = curve._segment2;
} else if (parameter != null) {
segment = curve.getPartLength(0, parameter)
< curve.getPartLength(parameter, 1)
? curve._segment1
: curve._segment2;
}
this._segment = segment;
}
return segment;
},
getCurve: function() {
var curve = this._curve,
path = curve && curve._path,
that = this;
if (path && path._version !== this._version) {
curve = this._parameter = this._curve = this._offset = null;
}
function trySegment(segment) {
var curve = segment && segment.getCurve();
if (curve && (that._parameter = curve.getParameterOf(that._point))
!= null) {
that._setCurve(curve);
that._segment = segment;
return curve;
}
}
return curve
|| trySegment(this._segment)
|| trySegment(this._segment1)
|| trySegment(this._segment2.getPrevious());
},
getPath: function() {
var curve = this.getCurve();
return curve && curve._path;
},
getIndex: function() {
var curve = this.getCurve();
return curve && curve.getIndex();
},
getParameter: function() {
var curve = this.getCurve(),
parameter = this._parameter;
return curve && parameter == null
? this._parameter = curve.getParameterOf(this._point)
: parameter;
},
getPoint: function() {
return this._point;
},
getOffset: function() {
var offset = this._offset;
if (offset == null) {
offset = 0;
var path = this.getPath(),
index = this.getIndex();
if (path && index != null) {
var curves = path.getCurves();
for (var i = 0; i < index; i++)
offset += curves[i].getLength();
}
this._offset = offset += this.getCurveOffset();
}
return offset;
},
getCurveOffset: function() {
var curve = this.getCurve(),
parameter = this.getParameter();
return parameter != null && curve && curve.getPartLength(0, parameter);
},
getIntersection: function() {
return this._intersection;
},
getDistance: function() {
return this._distance;
},
divide: function() {
var curve = this.getCurve(),
res = null;
if (curve) {
res = curve.divide(this.getParameter(), true);
if (res)
this._setSegment(res._segment1);
}
return res;
},
split: function() {
var curve = this.getCurve();
return curve ? curve.split(this.getParameter(), true) : null;
},
equals: function(loc, _ignoreOther) {
var res = this === loc,
epsilon = 2e-7;
if (!res && loc instanceof CurveLocation
&& this.getPath() === loc.getPath()
&& this.getPoint().isClose(loc.getPoint(), epsilon)) {
var c1 = this.getCurve(),
c2 = loc.getCurve(),
abs = Math.abs,
diff = abs(
((c1.isLast() && c2.isFirst() ? -1 : c1.getIndex())
+ this.getParameter()) -
((c2.isLast() && c1.isFirst() ? -1 : c2.getIndex())
+ loc.getParameter()));
res = (diff < 4e-7
|| ((diff = abs(this.getOffset() - loc.getOffset())) < epsilon
|| abs(this.getPath().getLength() - diff) < epsilon))
&& (_ignoreOther
|| (!this._intersection && !loc._intersection
|| this._intersection && this._intersection.equals(
loc._intersection, true)));
}
return res;
},
toString: function() {
var parts = [],
point = this.getPoint(),
f = Formatter.instance;
if (point)
parts.push('point: ' + point);
var index = this.getIndex();
if (index != null)
parts.push('index: ' + index);
var parameter = this.getParameter();
if (parameter != null)
parts.push('parameter: ' + f.number(parameter));
if (this._distance != null)
parts.push('distance: ' + f.number(this._distance));
return '{ ' + parts.join(', ') + ' }';
},
isTouching: function() {
var inter = this._intersection;
if (inter && this.getTangent().isCollinear(inter.getTangent())) {
var curve1 = this.getCurve(),
curve2 = inter.getCurve();
return !(curve1.isStraight() && curve2.isStraight()
&& curve1.getLine().intersect(curve2.getLine()));
}
return false;
},
isCrossing: function() {
var inter = this._intersection;
if (!inter)
return false;
var t1 = this.getParameter(),
t2 = inter.getParameter(),
tMin = 4e-7,
tMax = 1 - tMin;
if (t1 >= tMin && t1 <= tMax || t2 >= tMin && t2 <= tMax)
return !this.isTouching();
var c2 = this.getCurve(),
c1 = c2.getPrevious(),
c4 = inter.getCurve(),
c3 = c4.getPrevious(),
PI = Math.PI;
if (!c1 || !c3)
return false;
function isInRange(angle, min, max) {
return min < max
? angle > min && angle < max
: angle > min && angle <= PI || angle >= -PI && angle < max;
}
var a1 = c1.getTangentAt(tMax, true).negate().getAngleInRadians(),
a2 = c2.getTangentAt(tMin, true).getAngleInRadians(),
a3 = c3.getTangentAt(tMax, true).negate().getAngleInRadians(),
a4 = c4.getTangentAt(tMin, true).getAngleInRadians();
return (isInRange(a3, a1, a2) ^ isInRange(a4, a1, a2))
&& (isInRange(a3, a2, a1) ^ isInRange(a4, a2, a1));
},
isOverlap: function() {
return !!this._overlap;
}
}, Base.each(Curve.evaluateMethods, function(name) {
var get = name + 'At';
this[name] = function() {
var parameter = this.getParameter(),
curve = this.getCurve();
return parameter != null && curve && curve[get](parameter, true);
};
}, {
preserve: true
}),
new function() {
function insert(locations, loc, merge) {
var length = locations.length,
l = 0,
r = length - 1;
function search(index, dir) {
for (var i = index + dir; i >= -1 && i <= length; i += dir) {
var loc2 = locations[((i % length) + length) % length];
if (!loc.getPoint().isClose(loc2.getPoint(),
2e-7))
break;
if (loc.equals(loc2))
return loc2;
}
return null;
}
while (l <= r) {
var m = (l + r) >>> 1,
loc2 = locations[m],
found;
if (merge && (found = loc.equals(loc2) ? loc2
: (search(m, -1) || search(m, 1)))) {
if (loc._overlap) {
found._overlap = found._intersection._overlap = true;
}
return found;
}
var path1 = loc.getPath(),
path2 = loc2.getPath(),
diff = path1 === path2
? (loc.getIndex() + loc.getParameter())
- (loc2.getIndex() + loc2.getParameter())
: path1._id - path2._id;
if (diff < 0) {
r = m - 1;
} else {
l = m + 1;
}
}
locations.splice(l, 0, loc);
return loc;
}
return { statics: {
insert: insert,
expand: function(locations) {
var expanded = locations.slice();
for (var i = 0, l = locations.length; i < l; i++) {
insert(expanded, locations[i]._intersection, false);
}
return expanded;
}
}};
});
var PathItem = Item.extend({
_class: 'PathItem',
initialize: function PathItem() {
},
getIntersections: function(path, include, _matrix, _returnFirst) {
var self = this === path || !path,
matrix1 = this._matrix.orNullIfIdentity(),
matrix2 = self ? matrix1
: (_matrix || path._matrix).orNullIfIdentity();
if (!self && !this.getBounds(matrix1).touches(path.getBounds(matrix2)))
return [];
var curves1 = this.getCurves(),
curves2 = self ? curves1 : path.getCurves(),
length1 = curves1.length,
length2 = self ? length1 : curves2.length,
values2 = [],
arrays = [],
locations,
path;
for (var i = 0; i < length2; i++)
values2[i] = curves2[i].getValues(matrix2);
for (var i = 0; i < length1; i++) {
var curve1 = curves1[i],
values1 = self ? values2[i] : curve1.getValues(matrix1),
path1 = curve1.getPath();
if (path1 !== path) {
path = path1;
locations = [];
arrays.push(locations);
}
if (self) {
Curve._getSelfIntersection(values1, curve1, locations, {
include: include,
startConnected: length1 === 1 &&
curve1.getPoint1().equals(curve1.getPoint2())
});
}
for (var j = self ? i + 1 : 0; j < length2; j++) {
if (_returnFirst && locations.length)
return locations;
var curve2 = curves2[j];
Curve._getIntersections(
values1, values2[j], curve1, curve2, locations,
{
include: include,
startConnected: self && curve1.getPrevious() === curve2,
endConnected: self && curve1.getNext() === curve2
}
);
}
}
locations = [];
for (var i = 0, l = arrays.length; i < l; i++) {
locations.push.apply(locations, arrays[i]);
}
return locations;
},
getCrossings: function(path) {
return this.getIntersections(path, function(inter) {
return inter.isCrossing();
});
},
_asPathItem: function() {
return this;
},
setPathData: function(data) {
var parts = data.match(/[mlhvcsqtaz][^mlhvcsqtaz]*/ig),
coords,
relative = false,
previous,
control,
current = new Point(),
start = new Point();
function getCoord(index, coord) {
var val = +coords[index];
if (relative)
val += current[coord];
return val;
}
function getPoint(index) {
return new Point(
getCoord(index, 'x'),
getCoord(index + 1, 'y')
);
}
this.clear();
for (var i = 0, l = parts && parts.length; i < l; i++) {
var part = parts[i],
command = part[0],
lower = command.toLowerCase();
coords = part.match(/[+-]?(?:\d*\.\d+|\d+\.?)(?:[eE][+-]?\d+)?/g);
var length = coords && coords.length;
relative = command === lower;
if (previous === 'z' && !/[mz]/.test(lower))
this.moveTo(current = start);
switch (lower) {
case 'm':
case 'l':
var move = lower === 'm';
for (var j = 0; j < length; j += 2)
this[j === 0 && move ? 'moveTo' : 'lineTo'](
current = getPoint(j));
control = current;
if (move)
start = current;
break;
case 'h':
case 'v':
var coord = lower === 'h' ? 'x' : 'y';
for (var j = 0; j < length; j++) {
current[coord] = getCoord(j, coord);
this.lineTo(current);
}
control = current;
break;
case 'c':
for (var j = 0; j < length; j += 6) {
this.cubicCurveTo(
getPoint(j),
control = getPoint(j + 2),
current = getPoint(j + 4));
}
break;
case 's':
for (var j = 0; j < length; j += 4) {
this.cubicCurveTo(
/[cs]/.test(previous)
? current.multiply(2).subtract(control)
: current,
control = getPoint(j),
current = getPoint(j + 2));
previous = lower;
}
break;
case 'q':
for (var j = 0; j < length; j += 4) {
this.quadraticCurveTo(
control = getPoint(j),
current = getPoint(j + 2));
}
break;
case 't':
for (var j = 0; j < length; j += 2) {
this.quadraticCurveTo(
control = (/[qt]/.test(previous)
? current.multiply(2).subtract(control)
: current),
current = getPoint(j));
previous = lower;
}
break;
case 'a':
for (var j = 0; j < length; j += 7) {
this.arcTo(current = getPoint(j + 5),
new Size(+coords[j], +coords[j + 1]),
+coords[j + 2], +coords[j + 4], +coords[j + 3]);
}
break;
case 'z':
this.closePath(true);
break;
}
previous = lower;
}
},
_canComposite: function() {
return !(this.hasFill() && this.hasStroke());
},
_contains: function(point) {
var winding = this._getWinding(point, false, true);
return !!(this.getWindingRule() === 'evenodd' ? winding & 1 : winding);
}
});
var Path = PathItem.extend({
_class: 'Path',
_serializeFields: {
segments: [],
closed: false
},
initialize: function Path(arg) {
this._closed = false;
this._segments = [];
this._version = 0;
var segments = Array.isArray(arg)
? typeof arg[0] === 'object'
? arg
: arguments
: arg && (arg.size === undefined && (arg.x !== undefined
|| arg.point !== undefined))
? arguments
: null;
if (segments && segments.length > 0) {
this.setSegments(segments);
} else {
this._curves = undefined;
this._selectedSegmentState = 0;
if (!segments && typeof arg === 'string') {
this.setPathData(arg);
arg = null;
}
}
this._initialize(!segments && arg);
},
_equals: function(item) {
return this._closed === item._closed
&& Base.equals(this._segments, item._segments);
},
clone: function(insert) {
var copy = new Path(Item.NO_INSERT);
copy.setSegments(this._segments);
copy._closed = this._closed;
if (this._clockwise !== undefined)
copy._clockwise = this._clockwise;
return this._clone(copy, insert);
},
_changed: function _changed(flags) {
_changed.base.call(this, flags);
if (flags & 8) {
var parent = this._parent;
if (parent)
parent._currentPath = undefined;
this._length = this._area = this._clockwise = this._monoCurves =
undefined;
if (flags & 16) {
this._version++;
} else if (this._curves) {
for (var i = 0, l = this._curves.length; i < l; i++)
this._curves[i]._changed();
}
} else if (flags & 32) {
this._bounds = undefined;
}
},
getStyle: function() {
var parent = this._parent;
return (parent instanceof CompoundPath ? parent : this)._style;
},
getSegments: function() {
return this._segments;
},
setSegments: function(segments) {
var fullySelected = this.isFullySelected();
this._segments.length = 0;
this._selectedSegmentState = 0;
this._curves = undefined;
if (segments && segments.length > 0)
this._add(Segment.readAll(segments));
if (fullySelected)
this.setFullySelected(true);
},
getFirstSegment: function() {
return this._segments[0];
},
getLastSegment: function() {
return this._segments[this._segments.length - 1];
},
getCurves: function() {
var curves = this._curves,
segments = this._segments;
if (!curves) {
var length = this._countCurves();
curves = this._curves = new Array(length);
for (var i = 0; i < length; i++)
curves[i] = new Curve(this, segments[i],
segments[i + 1] || segments[0]);
}
return curves;
},
getFirstCurve: function() {
return this.getCurves()[0];
},
getLastCurve: function() {
var curves = this.getCurves();
return curves[curves.length - 1];
},
isClosed: function() {
return this._closed;
},
setClosed: function(closed) {
if (this._closed != (closed = !!closed)) {
this._closed = closed;
if (this._curves) {
var length = this._curves.length = this._countCurves();
if (closed)
this._curves[length - 1] = new Curve(this,
this._segments[length - 1], this._segments[0]);
}
this._changed(25);
}
}
}, {
beans: true,
getPathData: function(_matrix, _precision) {
var segments = this._segments,
length = segments.length,
f = new Formatter(_precision),
coords = new Array(6),
first = true,
curX, curY,
prevX, prevY,
inX, inY,
outX, outY,
parts = [];
function addSegment(segment, skipLine) {
segment._transformCoordinates(_matrix, coords, false);
curX = coords[0];
curY = coords[1];
if (first) {
parts.push('M' + f.pair(curX, curY));
first = false;
} else {
inX = coords[2];
inY = coords[3];
if (inX === curX && inY === curY
&& outX === prevX && outY === prevY) {
if (!skipLine)
parts.push('l' + f.pair(curX - prevX, curY - prevY));
} else {
parts.push('c' + f.pair(outX - prevX, outY - prevY)
+ ' ' + f.pair(inX - prevX, inY - prevY)
+ ' ' + f.pair(curX - prevX, curY - prevY));
}
}
prevX = curX;
prevY = curY;
outX = coords[4];
outY = coords[5];
}
if (length === 0)
return '';
for (var i = 0; i < length; i++)
addSegment(segments[i]);
if (this._closed && length > 0) {
addSegment(segments[0], true);
parts.push('z');
}
return parts.join('');
}
}, {
isEmpty: function() {
return this._segments.length === 0;
},
_transformContent: function(matrix) {
var coords = new Array(6);
for (var i = 0, l = this._segments.length; i < l; i++)
this._segments[i]._transformCoordinates(matrix, coords, true);
return true;
},
_add: function(segs, index) {
var segments = this._segments,
curves = this._curves,
amount = segs.length,
append = index == null,
index = append ? segments.length : index;
for (var i = 0; i < amount; i++) {
var segment = segs[i];
if (segment._path)
segment = segs[i] = segment.clone();
segment._path = this;
segment._index = index + i;
if (segment._selectionState)
this._updateSelection(segment, 0, segment._selectionState);
}
if (append) {
segments.push.apply(segments, segs);
} else {
segments.splice.apply(segments, [index, 0].concat(segs));
for (var i = index + amount, l = segments.length; i < l; i++)
segments[i]._index = i;
}
if (curves) {
var total = this._countCurves(),
from = index + amount - 1 === total ? index - 1 : index,
start = from,
to = Math.min(from + amount, total);
if (segs._curves) {
curves.splice.apply(curves, [from, 0].concat(segs._curves));
start += segs._curves.length;
}
for (var i = start; i < to; i++)
curves.splice(i, 0, new Curve(this, null, null));
this._adjustCurves(from, to);
}
this._changed(25);
return segs;
},
_adjustCurves: function(from, to) {
var segments = this._segments,
curves = this._curves,
curve;
for (var i = from; i < to; i++) {
curve = curves[i];
curve._path = this;
curve._segment1 = segments[i];
curve._segment2 = segments[i + 1] || segments[0];
curve._changed();
}
if (curve = curves[this._closed && from === 0 ? segments.length - 1
: from - 1]) {
curve._segment2 = segments[from] || segments[0];
curve._changed();
}
if (curve = curves[to]) {
curve._segment1 = segments[to];
curve._changed();
}
},
_countCurves: function() {
var length = this._segments.length;
return !this._closed && length > 0 ? length - 1 : length;
},
add: function(segment1 ) {
return arguments.length > 1 && typeof segment1 !== 'number'
? this._add(Segment.readAll(arguments))
: this._add([ Segment.read(arguments) ])[0];
},
insert: function(index, segment1 ) {
return arguments.length > 2 && typeof segment1 !== 'number'
? this._add(Segment.readAll(arguments, 1), index)
: this._add([ Segment.read(arguments, 1) ], index)[0];
},
addSegment: function() {
return this._add([ Segment.read(arguments) ])[0];
},
insertSegment: function(index ) {
return this._add([ Segment.read(arguments, 1) ], index)[0];
},
addSegments: function(segments) {
return this._add(Segment.readAll(segments));
},
insertSegments: function(index, segments) {
return this._add(Segment.readAll(segments), index);
},
removeSegment: function(index) {
return this.removeSegments(index, index + 1)[0] || null;
},
removeSegments: function(from, to, _includeCurves) {
from = from || 0;
to = Base.pick(to, this._segments.length);
var segments = this._segments,
curves = this._curves,
count = segments.length,
removed = segments.splice(from, to - from),
amount = removed.length;
if (!amount)
return removed;
for (var i = 0; i < amount; i++) {
var segment = removed[i];
if (segment._selectionState)
this._updateSelection(segment, segment._selectionState, 0);
segment._index = segment._path = null;
}
for (var i = from, l = segments.length; i < l; i++)
segments[i]._index = i;
if (curves) {
var index = from > 0 && to === count + (this._closed ? 1 : 0)
? from - 1
: from,
curves = curves.splice(index, amount);
if (_includeCurves)
removed._curves = curves.slice(1);
this._adjustCurves(index, index);
}
this._changed(25);
return removed;
},
clear: '#removeSegments',
hasHandles: function() {
var segments = this._segments;
for (var i = 0, l = segments.length; i < l; i++) {
if (segments[i].hasHandles())
return true;
}
return false;
},
clearHandles: function() {
var segments = this._segments;
for (var i = 0, l = segments.length; i < l; i++)
segments[i].clearHandles();
},
getLength: function() {
if (this._length == null) {
var curves = this.getCurves(),
length = 0;
for (var i = 0, l = curves.length; i < l; i++)
length += curves[i].getLength();
this._length = length;
}
return this._length;
},
getArea: function() {
if (this._area == null) {
var segments = this._segments,
count = segments.length,
last = count - 1,
area = 0;
for (var i = 0, l = this._closed ? count : last; i < l; i++) {
area += Curve.getArea(Curve.getValues(
segments[i], segments[i < last ? i + 1 : 0]));
}
this._area = area;
}
return this._area;
},
isClockwise: function() {
if (this._clockwise !== undefined)
return this._clockwise;
return this.getArea() >= 0;
},
setClockwise: function(clockwise) {
if (this.isClockwise() != (clockwise = !!clockwise))
this.reverse();
this._clockwise = clockwise;
},
isFullySelected: function() {
var length = this._segments.length;
return this._selected && length > 0 && this._selectedSegmentState
=== length * 7;
},
setFullySelected: function(selected) {
if (selected)
this._selectSegments(true);
this.setSelected(selected);
},
setSelected: function setSelected(selected) {
if (!selected)
this._selectSegments(false);
setSelected.base.call(this, selected);
},
_selectSegments: function(selected) {
var length = this._segments.length;
this._selectedSegmentState = selected
? length * 7 : 0;
for (var i = 0; i < length; i++)
this._segments[i]._selectionState = selected
? 7 : 0;
},
_updateSelection: function(segment, oldState, newState) {
segment._selectionState = newState;
var total = this._selectedSegmentState += newState - oldState;
if (total > 0)
this.setSelected(true);
},
flatten: function(maxDistance) {
var iterator = new PathIterator(this, 64, 0.1),
pos = 0,
step = iterator.length / Math.ceil(iterator.length / maxDistance),
end = iterator.length + (this._closed ? -step : step) / 2;
var segments = [];
while (pos <= end) {
segments.push(new Segment(iterator.getPointAt(pos)));
pos += step;
}
this.setSegments(segments);
},
reduce: function() {
var curves = this.getCurves();
for (var i = curves.length - 1; i >= 0; i--) {
var curve = curves[i];
if (!curve.hasHandles() && (curve.getLength() === 0
|| curve.isCollinear(curve.getNext())))
curve.remove();
}
return this;
},
simplify: function(tolerance) {
if (this._segments.length > 2) {
var fitter = new PathFitter(this, tolerance || 2.5);
this.setSegments(fitter.fit());
}
},
split: function(index, parameter) {
if (parameter === null)
return null;
if (arguments.length === 1) {
var arg = index;
if (typeof arg === 'number')
arg = this.getLocationAt(arg);
if (!arg)
return null
index = arg.index;
parameter = arg.parameter;
}
var tMin = 4e-7,
tMax = 1 - tMin;
if (parameter >= tMax) {
index++;
parameter--;
}
var curves = this.getCurves();
if (index >= 0 && index < curves.length) {
if (parameter >= tMin) {
curves[index++].divide(parameter, true);
}
var segs = this.removeSegments(index, this._segments.length, true),
path;
if (this._closed) {
this.setClosed(false);
path = this;
} else {
path = new Path(Item.NO_INSERT);
path.insertAbove(this, true);
this._clone(path);
}
path._add(segs, 0);
this.addSegment(segs[0]);
return path;
}
return null;
},
reverse: function() {
this._segments.reverse();
for (var i = 0, l = this._segments.length; i < l; i++) {
var segment = this._segments[i];
var handleIn = segment._handleIn;
segment._handleIn = segment._handleOut;
segment._handleOut = handleIn;
segment._index = i;
}
this._curves = null;
if (this._clockwise !== undefined)
this._clockwise = !this._clockwise;
this._changed(9);
},
join: function(path) {
if (path) {
var segments = path._segments,
last1 = this.getLastSegment(),
last2 = path.getLastSegment();
if (!last2)
return this;
if (last1 && last1._point.equals(last2._point))
path.reverse();
var first2 = path.getFirstSegment();
if (last1 && last1._point.equals(first2._point)) {
last1.setHandleOut(first2._handleOut);
this._add(segments.slice(1));
} else {
var first1 = this.getFirstSegment();
if (first1 && first1._point.equals(first2._point))
path.reverse();
last2 = path.getLastSegment();
if (first1 && first1._point.equals(last2._point)) {
first1.setHandleIn(last2._handleIn);
this._add(segments.slice(0, segments.length - 1), 0);
} else {
this._add(segments.slice());
}
}
if (path._closed)
this._add([segments[0]]);
path.remove();
}
var first = this.getFirstSegment(),
last = this.getLastSegment();
if (first !== last && first._point.equals(last._point)) {
first.setHandleIn(last._handleIn);
last.remove();
this.setClosed(true);
}
return this;
},
toShape: function(insert) {
if (!this._closed)
return null;
var segments = this._segments,
type,
size,
radius,
topCenter;
function isCollinear(i, j) {
var seg1 = segments[i],
seg2 = seg1.getNext(),
seg3 = segments[j],
seg4 = seg3.getNext();
return seg1._handleOut.isZero() && seg2._handleIn.isZero()
&& seg3._handleOut.isZero() && seg4._handleIn.isZero()
&& seg2._point.subtract(seg1._point).isCollinear(
seg4._point.subtract(seg3._point));
}
function isOrthogonal(i) {
var seg2 = segments[i],
seg1 = seg2.getPrevious(),
seg3 = seg2.getNext();
return seg1._handleOut.isZero() && seg2._handleIn.isZero()
&& seg2._handleOut.isZero() && seg3._handleIn.isZero()
&& seg2._point.subtract(seg1._point).isOrthogonal(
seg3._point.subtract(seg2._point));
}
function isArc(i) {
var seg1 = segments[i],
seg2 = seg1.getNext(),
handle1 = seg1._handleOut,
handle2 = seg2._handleIn,
kappa = 0.5522847498307936;
if (handle1.isOrthogonal(handle2)) {
var pt1 = seg1._point,
pt2 = seg2._point,
corner = new Line(pt1, handle1, true).intersect(
new Line(pt2, handle2, true), true);
return corner && Numerical.isZero(handle1.getLength() /
corner.subtract(pt1).getLength() - kappa)
&& Numerical.isZero(handle2.getLength() /
corner.subtract(pt2).getLength() - kappa);
}
return false;
}
function getDistance(i, j) {
return segments[i]._point.getDistance(segments[j]._point);
}
if (!this.hasHandles() && segments.length === 4
&& isCollinear(0, 2) && isCollinear(1, 3) && isOrthogonal(1)) {
type = Shape.Rectangle;
size = new Size(getDistance(0, 3), getDistance(0, 1));
topCenter = segments[1]._point.add(segments[2]._point).divide(2);
} else if (segments.length === 8 && isArc(0) && isArc(2) && isArc(4)
&& isArc(6) && isCollinear(1, 5) && isCollinear(3, 7)) {
type = Shape.Rectangle;
size = new Size(getDistance(1, 6), getDistance(0, 3));
radius = size.subtract(new Size(getDistance(0, 7),
getDistance(1, 2))).divide(2);
topCenter = segments[3]._point.add(segments[4]._point).divide(2);
} else if (segments.length === 4
&& isArc(0) && isArc(1) && isArc(2) && isArc(3)) {
if (Numerical.isZero(getDistance(0, 2) - getDistance(1, 3))) {
type = Shape.Circle;
radius = getDistance(0, 2) / 2;
} else {
type = Shape.Ellipse;
radius = new Size(getDistance(2, 0) / 2, getDistance(3, 1) / 2);
}
topCenter = segments[1]._point;
}
if (type) {
var center = this.getPosition(true),
shape = this._clone(new type({
center: center,
size: size,
radius: radius,
insert: false
}), insert, false);
shape.rotate(topCenter.subtract(center).getAngle() + 90);
return shape;
}
return null;
},
_hitTestSelf: function(point, options) {
var that = this,
style = this.getStyle(),
segments = this._segments,
numSegments = segments.length,
closed = this._closed,
tolerancePadding = options._tolerancePadding,
strokePadding = tolerancePadding,
join, cap, miterLimit,
area, loc, res,
hitStroke = options.stroke && style.hasStroke(),
hitFill = options.fill && style.hasFill(),
hitCurves = options.curves,
radius = hitStroke
? style.getStrokeWidth() / 2
: hitFill && options.tolerance > 0 || hitCurves
? 0 : null;
if (radius !== null) {
if (radius > 0) {
join = style.getStrokeJoin();
cap = style.getStrokeCap();
miterLimit = radius * style.getMiterLimit();
strokePadding = tolerancePadding.add(new Point(radius, radius));
} else {
join = cap = 'round';
}
}
function isCloseEnough(pt, padding) {
return point.subtract(pt).divide(padding).length <= 1;
}
function checkSegmentPoint(seg, pt, name) {
if (!options.selected || pt.isSelected()) {
var anchor = seg._point;
if (pt !== anchor)
pt = pt.add(anchor);
if (isCloseEnough(pt, strokePadding)) {
return new HitResult(name, that, {
segment: seg,
point: pt
});
}
}
}
function checkSegmentPoints(seg, ends) {
return (ends || options.segments)
&& checkSegmentPoint(seg, seg._point, 'segment')
|| (!ends && options.handles) && (
checkSegmentPoint(seg, seg._handleIn, 'handle-in') ||
checkSegmentPoint(seg, seg._handleOut, 'handle-out'));
}
function addToArea(point) {
area.add(point);
}
function checkSegmentStroke(segment) {
if (join !== 'round' || cap !== 'round') {
area = new Path({ internal: true, closed: true });
if (closed || segment._index > 0
&& segment._index < numSegments - 1) {
if (join !== 'round' && (segment._handleIn.isZero()
|| segment._handleOut.isZero()))
Path._addBevelJoin(segment, join, radius, miterLimit,
addToArea, true);
} else if (cap !== 'round') {
Path._addSquareCap(segment, cap, radius, addToArea, true);
}
if (!area.isEmpty()) {
var loc;
return area.contains(point)
|| (loc = area.getNearestLocation(point))
&& isCloseEnough(loc.getPoint(), tolerancePadding);
}
}
return isCloseEnough(segment._point, strokePadding);
}
if (options.ends && !options.segments && !closed) {
if (res = checkSegmentPoints(segments[0], true)
|| checkSegmentPoints(segments[numSegments - 1], true))
return res;
} else if (options.segments || options.handles) {
for (var i = 0; i < numSegments; i++)
if (res = checkSegmentPoints(segments[i]))
return res;
}
if (radius !== null) {
loc = this.getNearestLocation(point);
if (loc) {
var parameter = loc.getParameter();
if (parameter === 0 || parameter === 1 && numSegments > 1) {
if (!checkSegmentStroke(loc.getSegment()))
loc = null;
} else if (!isCloseEnough(loc.getPoint(), strokePadding)) {
loc = null;
}
}
if (!loc && join === 'miter' && numSegments > 1) {
for (var i = 0; i < numSegments; i++) {
var segment = segments[i];
if (point.getDistance(segment._point) <= miterLimit
&& checkSegmentStroke(segment)) {
loc = segment.getLocation();
break;
}
}
}
}
return !loc && hitFill && this._contains(point)
|| loc && !hitStroke && !hitCurves
? new HitResult('fill', this)
: loc
? new HitResult(hitStroke ? 'stroke' : 'curve', this, {
location: loc,
point: loc.getPoint()
})
: null;
}
}, Base.each(Curve.evaluateMethods,
function(name) {
this[name + 'At'] = function(offset, isParameter) {
var loc = this.getLocationAt(offset, isParameter);
return loc && loc[name]();
};
},
{
beans: false,
getLocationOf: function() {
var point = Point.read(arguments),
curves = this.getCurves();
for (var i = 0, l = curves.length; i < l; i++) {
var loc = curves[i].getLocationOf(point);
if (loc)
return loc;
}
return null;
},
getOffsetOf: function() {
var loc = this.getLocationOf.apply(this, arguments);
return loc ? loc.getOffset() : null;
},
getLocationAt: function(offset, isParameter) {
var curves = this.getCurves(),
length = 0;
if (isParameter) {
var index = ~~offset,
curve = curves[index];
return curve ? curve.getLocationAt(offset - index, true) : null;
}
for (var i = 0, l = curves.length; i < l; i++) {
var start = length,
curve = curves[i];
length += curve.getLength();
if (length > offset) {
return curve.getLocationAt(offset - start);
}
}
if (curves.length > 0 && offset <= this.getLength())
return new CurveLocation(curves[curves.length - 1], 1);
return null;
},
getNearestLocation: function() {
var point = Point.read(arguments),
curves = this.getCurves(),
minDist = Infinity,
minLoc = null;
for (var i = 0, l = curves.length; i < l; i++) {
var loc = curves[i].getNearestLocation(point);
if (loc._distance < minDist) {
minDist = loc._distance;
minLoc = loc;
}
}
return minLoc;
},
getNearestPoint: function() {
return this.getNearestLocation.apply(this, arguments).getPoint();
}
}),
new function() {
function drawHandles(ctx, segments, matrix, size) {
var half = size / 2;
function drawHandle(index) {
var hX = coords[index],
hY = coords[index + 1];
if (pX != hX || pY != hY) {
ctx.beginPath();
ctx.moveTo(pX, pY);
ctx.lineTo(hX, hY);
ctx.stroke();
ctx.beginPath();
ctx.arc(hX, hY, half, 0, Math.PI * 2, true);
ctx.fill();
}
}
var coords = new Array(6);
for (var i = 0, l = segments.length; i < l; i++) {
var segment = segments[i];
segment._transformCoordinates(matrix, coords, false);
var state = segment._selectionState,
pX = coords[0],
pY = coords[1];
if (state & 1)
drawHandle(2);
if (state & 2)
drawHandle(4);
ctx.fillRect(pX - half, pY - half, size, size);
if (!(state & 4)) {
var fillStyle = ctx.fillStyle;
ctx.fillStyle = '#ffffff';
ctx.fillRect(pX - half + 1, pY - half + 1, size - 2, size - 2);
ctx.fillStyle = fillStyle;
}
}
}
function drawSegments(ctx, path, matrix) {
var segments = path._segments,
length = segments.length,
coords = new Array(6),
first = true,
curX, curY,
prevX, prevY,
inX, inY,
outX, outY;
function drawSegment(segment) {
if (matrix) {
segment._transformCoordinates(matrix, coords, false);
curX = coords[0];
curY = coords[1];
} else {
var point = segment._point;
curX = point._x;
curY = point._y;
}
if (first) {
ctx.moveTo(curX, curY);
first = false;
} else {
if (matrix) {
inX = coords[2];
inY = coords[3];
} else {
var handle = segment._handleIn;
inX = curX + handle._x;
inY = curY + handle._y;
}
if (inX === curX && inY === curY
&& outX === prevX && outY === prevY) {
ctx.lineTo(curX, curY);
} else {
ctx.bezierCurveTo(outX, outY, inX, inY, curX, curY);
}
}
prevX = curX;
prevY = curY;
if (matrix) {
outX = coords[4];
outY = coords[5];
} else {
var handle = segment._handleOut;
outX = prevX + handle._x;
outY = prevY + handle._y;
}
}
for (var i = 0; i < length; i++)
drawSegment(segments[i]);
if (path._closed && length > 0)
drawSegment(segments[0]);
}
return {
_draw: function(ctx, param, strokeMatrix) {
var dontStart = param.dontStart,
dontPaint = param.dontFinish || param.clip,
style = this.getStyle(),
hasFill = style.hasFill(),
hasStroke = style.hasStroke(),
dashArray = style.getDashArray(),
dashLength = !paper.support.nativeDash && hasStroke
&& dashArray && dashArray.length;
if (!dontStart)
ctx.beginPath();
if (!dontStart && this._currentPath) {
ctx.currentPath = this._currentPath;
} else if (hasFill || hasStroke && !dashLength || dontPaint) {
drawSegments(ctx, this, strokeMatrix);
if (this._closed)
ctx.closePath();
if (!dontStart)
this._currentPath = ctx.currentPath;
}
function getOffset(i) {
return dashArray[((i % dashLength) + dashLength) % dashLength];
}
if (!dontPaint && (hasFill || hasStroke)) {
this._setStyles(ctx);
if (hasFill) {
ctx.fill(style.getWindingRule());
ctx.shadowColor = 'rgba(0,0,0,0)';
}
if (hasStroke) {
if (dashLength) {
if (!dontStart)
ctx.beginPath();
var iterator = new PathIterator(this, 32, 0.25,
strokeMatrix),
length = iterator.length,
from = -style.getDashOffset(), to,
i = 0;
from = from % length;
while (from > 0) {
from -= getOffset(i--) + getOffset(i--);
}
while (from < length) {
to = from + getOffset(i++);
if (from > 0 || to > 0)
iterator.drawPart(ctx,
Math.max(from, 0), Math.max(to, 0));
from = to + getOffset(i++);
}
}
ctx.stroke();
}
}
},
_drawSelected: function(ctx, matrix) {
ctx.beginPath();
drawSegments(ctx, this, matrix);
ctx.stroke();
drawHandles(ctx, this._segments, matrix, paper.settings.handleSize);
}
};
},
new function() {
function getFirstControlPoints(rhs) {
var n = rhs.length,
x = [],
tmp = [],
b = 2;
x[0] = rhs[0] / b;
for (var i = 1; i < n; i++) {
tmp[i] = 1 / b;
b = (i < n - 1 ? 4 : 2) - tmp[i];
x[i] = (rhs[i] - x[i - 1]) / b;
}
for (var i = 1; i < n; i++) {
x[n - i - 1] -= tmp[n - i] * x[n - i];
}
return x;
}
return {
smooth: function() {
var segments = this._segments,
size = segments.length,
closed = this._closed,
n = size,
overlap = 0;
if (size <= 2)
return;
if (closed) {
overlap = Math.min(size, 4);
n += Math.min(size, overlap) * 2;
}
var knots = [];
for (var i = 0; i < size; i++)
knots[i + overlap] = segments[i]._point;
if (closed) {
for (var i = 0; i < overlap; i++) {
knots[i] = segments[i + size - overlap]._point;
knots[i + size + overlap] = segments[i]._point;
}
} else {
n--;
}
var rhs = [];
for (var i = 1; i < n - 1; i++)
rhs[i] = 4 * knots[i]._x + 2 * knots[i + 1]._x;
rhs[0] = knots[0]._x + 2 * knots[1]._x;
rhs[n - 1] = 3 * knots[n - 1]._x;
var x = getFirstControlPoints(rhs);
for (var i = 1; i < n - 1; i++)
rhs[i] = 4 * knots[i]._y + 2 * knots[i + 1]._y;
rhs[0] = knots[0]._y + 2 * knots[1]._y;
rhs[n - 1] = 3 * knots[n - 1]._y;
var y = getFirstControlPoints(rhs);
if (closed) {
for (var i = 0, j = size; i < overlap; i++, j++) {
var f1 = i / overlap,
f2 = 1 - f1,
ie = i + overlap,
je = j + overlap;
x[j] = x[i] * f1 + x[j] * f2;
y[j] = y[i] * f1 + y[j] * f2;
x[je] = x[ie] * f2 + x[je] * f1;
y[je] = y[ie] * f2 + y[je] * f1;
}
n--;
}
var handleIn = null;
for (var i = overlap; i <= n - overlap; i++) {
var segment = segments[i - overlap];
if (handleIn)
segment.setHandleIn(handleIn.subtract(segment._point));
if (i < n) {
segment.setHandleOut(
new Point(x[i], y[i]).subtract(segment._point));
handleIn = i < n - 1
? new Point(
2 * knots[i + 1]._x - x[i + 1],
2 * knots[i + 1]._y - y[i + 1])
: new Point(
(knots[n]._x + x[n - 1]) / 2,
(knots[n]._y + y[n - 1]) / 2);
}
}
if (closed && handleIn) {
var segment = this._segments[0];
segment.setHandleIn(handleIn.subtract(segment._point));
}
}
};
},
new function() {
function getCurrentSegment(that) {
var segments = that._segments;
if (segments.length === 0)
throw new Error('Use a moveTo() command first');
return segments[segments.length - 1];
}
return {
moveTo: function() {
var segments = this._segments;
if (segments.length === 1)
this.removeSegment(0);
if (!segments.length)
this._add([ new Segment(Point.read(arguments)) ]);
},
moveBy: function() {
throw new Error('moveBy() is unsupported on Path items.');
},
lineTo: function() {
this._add([ new Segment(Point.read(arguments)) ]);
},
cubicCurveTo: function() {
var handle1 = Point.read(arguments),
handle2 = Point.read(arguments),
to = Point.read(arguments),
current = getCurrentSegment(this);
current.setHandleOut(handle1.subtract(current._point));
this._add([ new Segment(to, handle2.subtract(to)) ]);
},
quadraticCurveTo: function() {
var handle = Point.read(arguments),
to = Point.read(arguments),
current = getCurrentSegment(this)._point;
this.cubicCurveTo(
handle.add(current.subtract(handle).multiply(1 / 3)),
handle.add(to.subtract(handle).multiply(1 / 3)),
to
);
},
curveTo: function() {
var through = Point.read(arguments),
to = Point.read(arguments),
t = Base.pick(Base.read(arguments), 0.5),
t1 = 1 - t,
current = getCurrentSegment(this)._point,
handle = through.subtract(current.multiply(t1 * t1))
.subtract(to.multiply(t * t)).divide(2 * t * t1);
if (handle.isNaN())
throw new Error(
'Cannot put a curve through points with parameter = ' + t);
this.quadraticCurveTo(handle, to);
},
arcTo: function() {
var current = getCurrentSegment(this),
from = current._point,
to = Point.read(arguments),
through,
peek = Base.peek(arguments),
clockwise = Base.pick(peek, true),
center, extent, vector, matrix;
if (typeof clockwise === 'boolean') {
var middle = from.add(to).divide(2),
through = middle.add(middle.subtract(from).rotate(
clockwise ? -90 : 90));
} else if (Base.remain(arguments) <= 2) {
through = to;
to = Point.read(arguments);
} else {
var radius = Size.read(arguments);
if (radius.isZero())
return this.lineTo(to);
var rotation = Base.read(arguments),
clockwise = !!Base.read(arguments),
large = !!Base.read(arguments),
middle = from.add(to).divide(2),
pt = from.subtract(middle).rotate(-rotation),
x = pt.x,
y = pt.y,
abs = Math.abs,
rx = abs(radius.width),
ry = abs(radius.height),
rxSq = rx * rx,
rySq = ry * ry,
xSq = x * x,
ySq = y * y;
var factor = Math.sqrt(xSq / rxSq + ySq / rySq);
if (factor > 1) {
rx *= factor;
ry *= factor;
rxSq = rx * rx;
rySq = ry * ry;
}
factor = (rxSq * rySq - rxSq * ySq - rySq * xSq) /
(rxSq * ySq + rySq * xSq);
if (abs(factor) < 1e-12)
factor = 0;
if (factor < 0)
throw new Error(
'Cannot create an arc with the given arguments');
center = new Point(rx * y / ry, -ry * x / rx)
.multiply((large === clockwise ? -1 : 1)
* Math.sqrt(factor))
.rotate(rotation).add(middle);
matrix = new Matrix().translate(center).rotate(rotation)
.scale(rx, ry);
vector = matrix._inverseTransform(from);
extent = vector.getDirectedAngle(matrix._inverseTransform(to));
if (!clockwise && extent > 0)
extent -= 360;
else if (clockwise && extent < 0)
extent += 360;
}
if (through) {
var l1 = new Line(from.add(through).divide(2),
through.subtract(from).rotate(90), true),
l2 = new Line(through.add(to).divide(2),
to.subtract(through).rotate(90), true),
line = new Line(from, to),
throughSide = line.getSide(through);
center = l1.intersect(l2, true);
if (!center) {
if (!throughSide)
return this.lineTo(to);
throw new Error(
'Cannot create an arc with the given arguments');
}
vector = from.subtract(center);
extent = vector.getDirectedAngle(to.subtract(center));
var centerSide = line.getSide(center);
if (centerSide === 0) {
extent = throughSide * Math.abs(extent);
} else if (throughSide === centerSide) {
extent += extent < 0 ? 360 : -360;
}
}
var ext = Math.abs(extent),
count = ext >= 360 ? 4 : Math.ceil(ext / 90),
inc = extent / count,
half = inc * Math.PI / 360,
z = 4 / 3 * Math.sin(half) / (1 + Math.cos(half)),
segments = [];
for (var i = 0; i <= count; i++) {
var pt = to,
out = null;
if (i < count) {
out = vector.rotate(90).multiply(z);
if (matrix) {
pt = matrix._transformPoint(vector);
out = matrix._transformPoint(vector.add(out))
.subtract(pt);
} else {
pt = center.add(vector);
}
}
if (i === 0) {
current.setHandleOut(out);
} else {
var _in = vector.rotate(-90).multiply(z);
if (matrix) {
_in = matrix._transformPoint(vector.add(_in))
.subtract(pt);
}
segments.push(new Segment(pt, _in, out));
}
vector = vector.rotate(inc);
}
this._add(segments);
},
lineBy: function() {
var to = Point.read(arguments),
current = getCurrentSegment(this)._point;
this.lineTo(current.add(to));
},
curveBy: function() {
var through = Point.read(arguments),
to = Point.read(arguments),
parameter = Base.read(arguments),
current = getCurrentSegment(this)._point;
this.curveTo(current.add(through), current.add(to), parameter);
},
cubicCurveBy: function() {
var handle1 = Point.read(arguments),
handle2 = Point.read(arguments),
to = Point.read(arguments),
current = getCurrentSegment(this)._point;
this.cubicCurveTo(current.add(handle1), current.add(handle2),
current.add(to));
},
quadraticCurveBy: function() {
var handle = Point.read(arguments),
to = Point.read(arguments),
current = getCurrentSegment(this)._point;
this.quadraticCurveTo(current.add(handle), current.add(to));
},
arcBy: function() {
var current = getCurrentSegment(this)._point,
point = current.add(Point.read(arguments)),
clockwise = Base.pick(Base.peek(arguments), true);
if (typeof clockwise === 'boolean') {
this.arcTo(point, clockwise);
} else {
this.arcTo(point, current.add(Point.read(arguments)));
}
},
closePath: function(join) {
this.setClosed(true);
if (join)
this.join();
}
};
}, {
_getBounds: function(getter, matrix) {
return Path[getter](this._segments, this._closed, this.getStyle(),
matrix);
},
statics: {
getBounds: function(segments, closed, style, matrix, strokePadding) {
var first = segments[0];
if (!first)
return new Rectangle();
var coords = new Array(6),
prevCoords = first._transformCoordinates(matrix, new Array(6), false),
min = prevCoords.slice(0, 2),
max = min.slice(),
roots = new Array(2);
function processSegment(segment) {
segment._transformCoordinates(matrix, coords, false);
for (var i = 0; i < 2; i++) {
Curve._addBounds(
prevCoords[i],
prevCoords[i + 4],
coords[i + 2],
coords[i],
i, strokePadding ? strokePadding[i] : 0, min, max, roots);
}
var tmp = prevCoords;
prevCoords = coords;
coords = tmp;
}
for (var i = 1, l = segments.length; i < l; i++)
processSegment(segments[i]);
if (closed)
processSegment(first);
return new Rectangle(min[0], min[1], max[0] - min[0], max[1] - min[1]);
},
getStrokeBounds: function(segments, closed, style, matrix) {
if (!style.hasStroke())
return Path.getBounds(segments, closed, style, matrix);
var length = segments.length - (closed ? 0 : 1),
radius = style.getStrokeWidth() / 2,
padding = Path._getPenPadding(radius, matrix),
bounds = Path.getBounds(segments, closed, style, matrix, padding),
join = style.getStrokeJoin(),
cap = style.getStrokeCap(),
miterLimit = radius * style.getMiterLimit();
var joinBounds = new Rectangle(new Size(padding).multiply(2));
function add(point) {
bounds = bounds.include(matrix
? matrix._transformPoint(point, point) : point);
}
function addRound(segment) {
bounds = bounds.unite(joinBounds.setCenter(matrix
? matrix._transformPoint(segment._point) : segment._point));
}
function addJoin(segment, join) {
var handleIn = segment._handleIn,
handleOut = segment._handleOut;
if (join === 'round' || !handleIn.isZero() && !handleOut.isZero()
&& handleIn.isCollinear(handleOut)) {
addRound(segment);
} else {
Path._addBevelJoin(segment, join, radius, miterLimit, add);
}
}
function addCap(segment, cap) {
if (cap === 'round') {
addRound(segment);
} else {
Path._addSquareCap(segment, cap, radius, add);
}
}
for (var i = 1; i < length; i++)
addJoin(segments[i], join);
if (closed) {
addJoin(segments[0], join);
} else if (length > 0) {
addCap(segments[0], cap);
addCap(segments[segments.length - 1], cap);
}
return bounds;
},
_getPenPadding: function(radius, matrix) {
if (!matrix)
return [radius, radius];
var mx = matrix.shiftless(),
hor = mx.transform(new Point(radius, 0)),
ver = mx.transform(new Point(0, radius)),
phi = hor.getAngleInRadians(),
a = hor.getLength(),
b = ver.getLength();
var sin = Math.sin(phi),
cos = Math.cos(phi),
tan = Math.tan(phi),
tx = -Math.atan(b * tan / a),
ty = Math.atan(b / (tan * a));
return [Math.abs(a * Math.cos(tx) * cos - b * Math.sin(tx) * sin),
Math.abs(b * Math.sin(ty) * cos + a * Math.cos(ty) * sin)];
},
_addBevelJoin: function(segment, join, radius, miterLimit, addPoint, area) {
var curve2 = segment.getCurve(),
curve1 = curve2.getPrevious(),
point = curve2.getPointAt(0, true),
normal1 = curve1.getNormalAt(1, true),
normal2 = curve2.getNormalAt(0, true),
step = normal1.getDirectedAngle(normal2) < 0 ? -radius : radius;
normal1.setLength(step);
normal2.setLength(step);
if (area) {
addPoint(point);
addPoint(point.add(normal1));
}
if (join === 'miter') {
var corner = new Line(
point.add(normal1),
new Point(-normal1.y, normal1.x), true
).intersect(new Line(
point.add(normal2),
new Point(-normal2.y, normal2.x), true
), true);
if (corner && point.getDistance(corner) <= miterLimit) {
addPoint(corner);
if (!area)
return;
}
}
if (!area)
addPoint(point.add(normal1));
addPoint(point.add(normal2));
},
_addSquareCap: function(segment, cap, radius, addPoint, area) {
var point = segment._point,
loc = segment.getLocation(),
normal = loc.getNormal().multiply(radius);
if (area) {
addPoint(point.subtract(normal));
addPoint(point.add(normal));
}
if (cap === 'square')
point = point.add(normal.rotate(loc.getParameter() === 0 ? -90 : 90));
addPoint(point.add(normal));
addPoint(point.subtract(normal));
},
getHandleBounds: function(segments, closed, style, matrix, strokePadding,
joinPadding) {
var coords = new Array(6),
x1 = Infinity,
x2 = -x1,
y1 = x1,
y2 = x2;
for (var i = 0, l = segments.length; i < l; i++) {
var segment = segments[i];
segment._transformCoordinates(matrix, coords, false);
for (var j = 0; j < 6; j += 2) {
var padding = j === 0 ? joinPadding : strokePadding,
paddingX = padding ? padding[0] : 0,
paddingY = padding ? padding[1] : 0,
x = coords[j],
y = coords[j + 1],
xn = x - paddingX,
xx = x + paddingX,
yn = y - paddingY,
yx = y + paddingY;
if (xn < x1) x1 = xn;
if (xx > x2) x2 = xx;
if (yn < y1) y1 = yn;
if (yx > y2) y2 = yx;
}
}
return new Rectangle(x1, y1, x2 - x1, y2 - y1);
},
getRoughBounds: function(segments, closed, style, matrix) {
var strokeRadius = style.hasStroke() ? style.getStrokeWidth() / 2 : 0,
joinRadius = strokeRadius;
if (strokeRadius > 0) {
if (style.getStrokeJoin() === 'miter')
joinRadius = strokeRadius * style.getMiterLimit();
if (style.getStrokeCap() === 'square')
joinRadius = Math.max(joinRadius, strokeRadius * Math.sqrt(2));
}
return Path.getHandleBounds(segments, closed, style, matrix,
Path._getPenPadding(strokeRadius, matrix),
Path._getPenPadding(joinRadius, matrix));
}
}});
Path.inject({ statics: new function() {
var kappa = 0.5522847498307936,
ellipseSegments = [
new Segment([-1, 0], [0, kappa ], [0, -kappa]),
new Segment([0, -1], [-kappa, 0], [kappa, 0 ]),
new Segment([1, 0], [0, -kappa], [0, kappa ]),
new Segment([0, 1], [kappa, 0 ], [-kappa, 0])
];
function createPath(segments, closed, args) {
var props = Base.getNamed(args),
path = new Path(props && props.insert === false && Item.NO_INSERT);
path._add(segments);
path._closed = closed;
return path.set(props);
}
function createEllipse(center, radius, args) {
var segments = new Array(4);
for (var i = 0; i < 4; i++) {
var segment = ellipseSegments[i];
segments[i] = new Segment(
segment._point.multiply(radius).add(center),
segment._handleIn.multiply(radius),
segment._handleOut.multiply(radius)
);
}
return createPath(segments, true, args);
}
return {
Line: function() {
return createPath([
new Segment(Point.readNamed(arguments, 'from')),
new Segment(Point.readNamed(arguments, 'to'))
], false, arguments);
},
Circle: function() {
var center = Point.readNamed(arguments, 'center'),
radius = Base.readNamed(arguments, 'radius');
return createEllipse(center, new Size(radius), arguments);
},
Rectangle: function() {
var rect = Rectangle.readNamed(arguments, 'rectangle'),
radius = Size.readNamed(arguments, 'radius', 0,
{ readNull: true }),
bl = rect.getBottomLeft(true),
tl = rect.getTopLeft(true),
tr = rect.getTopRight(true),
br = rect.getBottomRight(true),
segments;
if (!radius || radius.isZero()) {
segments = [
new Segment(bl),
new Segment(tl),
new Segment(tr),
new Segment(br)
];
} else {
radius = Size.min(radius, rect.getSize(true).divide(2));
var rx = radius.width,
ry = radius.height,
hx = rx * kappa,
hy = ry * kappa;
segments = [
new Segment(bl.add(rx, 0), null, [-hx, 0]),
new Segment(bl.subtract(0, ry), [0, hy]),
new Segment(tl.add(0, ry), null, [0, -hy]),
new Segment(tl.add(rx, 0), [-hx, 0], null),
new Segment(tr.subtract(rx, 0), null, [hx, 0]),
new Segment(tr.add(0, ry), [0, -hy], null),
new Segment(br.subtract(0, ry), null, [0, hy]),
new Segment(br.subtract(rx, 0), [hx, 0])
];
}
return createPath(segments, true, arguments);
},
RoundRectangle: '#Rectangle',
Ellipse: function() {
var ellipse = Shape._readEllipse(arguments);
return createEllipse(ellipse.center, ellipse.radius, arguments);
},
Oval: '#Ellipse',
Arc: function() {
var from = Point.readNamed(arguments, 'from'),
through = Point.readNamed(arguments, 'through'),
to = Point.readNamed(arguments, 'to'),
props = Base.getNamed(arguments),
path = new Path(props && props.insert === false
&& Item.NO_INSERT);
path.moveTo(from);
path.arcTo(through, to);
return path.set(props);
},
RegularPolygon: function() {
var center = Point.readNamed(arguments, 'center'),
sides = Base.readNamed(arguments, 'sides'),
radius = Base.readNamed(arguments, 'radius'),
step = 360 / sides,
three = !(sides % 3),
vector = new Point(0, three ? -radius : radius),
offset = three ? -1 : 0.5,
segments = new Array(sides);
for (var i = 0; i < sides; i++)
segments[i] = new Segment(center.add(
vector.rotate((i + offset) * step)));
return createPath(segments, true, arguments);
},
Star: function() {
var center = Point.readNamed(arguments, 'center'),
points = Base.readNamed(arguments, 'points') * 2,
radius1 = Base.readNamed(arguments, 'radius1'),
radius2 = Base.readNamed(arguments, 'radius2'),
step = 360 / points,
vector = new Point(0, -1),
segments = new Array(points);
for (var i = 0; i < points; i++)
segments[i] = new Segment(center.add(vector.rotate(step * i)
.multiply(i % 2 ? radius2 : radius1)));
return createPath(segments, true, arguments);
}
};
}});
var CompoundPath = PathItem.extend({
_class: 'CompoundPath',
_serializeFields: {
children: []
},
initialize: function CompoundPath(arg) {
this._children = [];
this._namedChildren = {};
if (!this._initialize(arg)) {
if (typeof arg === 'string') {
this.setPathData(arg);
} else {
this.addChildren(Array.isArray(arg) ? arg : arguments);
}
}
},
insertChildren: function insertChildren(index, items, _preserve) {
for (var i = items.length - 1; i >= 0; i--) {
var item = items[i];
if (item instanceof CompoundPath) {
items.splice.apply(items, [i, 1].concat(item.removeChildren()));
item.remove();
}
}
items = insertChildren.base.call(this, index, items, _preserve, Path);
for (var i = 0, l = !_preserve && items && items.length; i < l; i++) {
var item = items[i];
if (item._clockwise === undefined)
item.setClockwise(item._index === 0);
}
return items;
},
reverse: function() {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++)
children[i].reverse();
},
smooth: function() {
for (var i = 0, l = this._children.length; i < l; i++)
this._children[i].smooth();
},
reduce: function reduce() {
var children = this._children;
for (var i = children.length - 1; i >= 0; i--) {
var path = children[i].reduce();
if (path.isEmpty())
children.splice(i, 1);
}
if (children.length === 0) {
var path = new Path(Item.NO_INSERT);
path.insertAbove(this);
path.setStyle(this._style);
this.remove();
return path;
}
return reduce.base.call(this);
},
isClockwise: function() {
var child = this.getFirstChild();
return child && child.isClockwise();
},
setClockwise: function(clockwise) {
if (this.isClockwise() !== !!clockwise)
this.reverse();
},
getFirstSegment: function() {
var first = this.getFirstChild();
return first && first.getFirstSegment();
},
getLastSegment: function() {
var last = this.getLastChild();
return last && last.getLastSegment();
},
getCurves: function() {
var children = this._children,
curves = [];
for (var i = 0, l = children.length; i < l; i++)
curves.push.apply(curves, children[i].getCurves());
return curves;
},
getFirstCurve: function() {
var first = this.getFirstChild();
return first && first.getFirstCurve();
},
getLastCurve: function() {
var last = this.getLastChild();
return last && last.getFirstCurve();
},
getArea: function() {
var children = this._children,
area = 0;
for (var i = 0, l = children.length; i < l; i++)
area += children[i].getArea();
return area;
}
}, {
beans: true,
getPathData: function(_matrix, _precision) {
var children = this._children,
paths = [];
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i],
mx = child._matrix;
paths.push(child.getPathData(_matrix && !mx.isIdentity()
? _matrix.chain(mx) : _matrix, _precision));
}
return paths.join(' ');
}
}, {
_getChildHitTestOptions: function(options) {
return options.class === Path || options.type === 'path'
? options
: new Base(options, { fill: false });
},
_draw: function(ctx, param, strokeMatrix) {
var children = this._children;
if (children.length === 0)
return;
if (this._currentPath) {
ctx.currentPath = this._currentPath;
} else {
param = param.extend({ dontStart: true, dontFinish: true });
ctx.beginPath();
for (var i = 0, l = children.length; i < l; i++)
children[i].draw(ctx, param, strokeMatrix);
this._currentPath = ctx.currentPath;
}
if (!param.clip) {
this._setStyles(ctx);
var style = this._style;
if (style.hasFill()) {
ctx.fill(style.getWindingRule());
ctx.shadowColor = 'rgba(0,0,0,0)';
}
if (style.hasStroke())
ctx.stroke();
}
},
_drawSelected: function(ctx, matrix, selectedItems) {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i],
mx = child._matrix;
if (!selectedItems[child._id])
child._drawSelected(ctx, mx.isIdentity() ? matrix
: matrix.chain(mx));
}
}
},
new function() {
function getCurrentPath(that, check) {
var children = that._children;
if (check && children.length === 0)
throw new Error('Use a moveTo() command first');
return children[children.length - 1];
}
var fields = {
moveTo: function() {
var current = getCurrentPath(this),
path = current && current.isEmpty() ? current
: new Path(Item.NO_INSERT);
if (path !== current)
this.addChild(path);
path.moveTo.apply(path, arguments);
},
moveBy: function() {
var current = getCurrentPath(this, true),
last = current && current.getLastSegment(),
point = Point.read(arguments);
this.moveTo(last ? point.add(last._point) : point);
},
closePath: function(join) {
getCurrentPath(this, true).closePath(join);
}
};
Base.each(['lineTo', 'cubicCurveTo', 'quadraticCurveTo', 'curveTo', 'arcTo',
'lineBy', 'cubicCurveBy', 'quadraticCurveBy', 'curveBy', 'arcBy'],
function(key) {
fields[key] = function() {
var path = getCurrentPath(this, true);
path[key].apply(path, arguments);
};
}
);
return fields;
});
PathItem.inject(new function() {
var operators = {
unite: function(w) {
return w === 1 || w === 0;
},
intersect: function(w) {
return w === 2;
},
subtract: function(w) {
return w === 1;
},
exclude: function(w) {
return w === 1;
}
};
function preparePath(path, resolve) {
var res = path.clone(false).reduce().transform(null, true, true);
return resolve ? res.resolveCrossings().reorient() : res;
}
function finishBoolean(ctor, paths, path1, path2, reduce) {
var result = new ctor(Item.NO_INSERT);
result.addChildren(paths, true);
if (reduce)
result = result.reduce();
result.insertAbove(path2 && path1.isSibling(path2)
&& path1.getIndex() < path2.getIndex()
? path2 : path1);
result.setStyle(path1._style);
return result;
}
function computeBoolean(path1, path2, operation) {
if (!path1._children && !path1._closed)
return computeOpenBoolean(path1, path2, operation);
var _path1 = preparePath(path1, true),
_path2 = path2 && path1 !== path2 && preparePath(path2, true);
if (_path2 && /^(subtract|exclude)$/.test(operation)
^ (_path2.isClockwise() !== _path1.isClockwise()))
_path2.reverse();
var intersections = CurveLocation.expand(
_path1.getIntersections(_path2, function(inter) {
return _path2 && inter.isOverlap() || inter.isCrossing();
})
);
divideLocations(intersections);
var segments = [],
monoCurves = [];
function collect(paths) {
for (var i = 0, l = paths.length; i < l; i++) {
var path = paths[i];
segments.push.apply(segments, path._segments);
monoCurves.push.apply(monoCurves, path._getMonoCurves());
}
}
collect(_path1._children || [_path1]);
if (_path2)
collect(_path2._children || [_path2]);
for (var i = 0, l = intersections.length; i < l; i++) {
propagateWinding(intersections[i]._segment, _path1, _path2,
monoCurves, operation);
}
for (var i = 0, l = segments.length; i < l; i++) {
var segment = segments[i];
if (segment._winding == null) {
propagateWinding(segment, _path1, _path2, monoCurves,
operation);
}
}
return finishBoolean(CompoundPath, tracePaths(segments, operation),
path1, path2, true);
}
function computeOpenBoolean(path1, path2, operation) {
if (!path2 || !path2._children && !path2._closed
|| !/^(subtract|intersect)$/.test(operation))
return null;
var _path1 = preparePath(path1, false),
_path2 = preparePath(path2, false),
intersections = _path1.getIntersections(_path2, function(inter) {
return inter.isOverlap() || inter.isCrossing();
}),
sub = operation === 'subtract',
paths = [];
function addPath(path) {
if (_path2.contains(path.getPointAt(path.getLength() / 2)) ^ sub) {
paths.unshift(path);
return true;
}
}
for (var i = intersections.length - 1; i >= 0; i--) {
var path = intersections[i].split();
if (path) {
if (addPath(path))
path.getFirstSegment().setHandleIn(0, 0);
_path1.getLastSegment().setHandleOut(0, 0);
}
}
addPath(_path1);
return finishBoolean(Group, paths, path1, path2);
}
function linkIntersections(from, to) {
var prev = from;
while (prev) {
if (prev === to)
return;
prev = prev._prev;
}
while (from._next && from._next !== to)
from = from._next;
if (!from._next) {
while (to._prev)
to = to._prev;
from._next = to;
to._prev = from;
}
}
function divideLocations(locations) {
var tMin = 4e-7,
tMax = 1 - tMin,
noHandles = false,
clearSegments = [],
prevCurve,
prevT;
for (var i = locations.length - 1; i >= 0; i--) {
var loc = locations[i],
curve = loc._curve,
t = loc._parameter,
origT = t;
if (curve !== prevCurve) {
noHandles = !curve.hasHandles();
} else if (prevT > 0) {
t /= prevT;
}
var segment;
if (t < tMin) {
segment = curve._segment1;
} else if (t > tMax) {
segment = curve._segment2;
} else {
segment = curve.divide(t, true, true)._segment1;
if (noHandles)
clearSegments.push(segment);
}
loc._setSegment(segment);
var inter = segment._intersection,
dest = loc._intersection;
if (inter) {
linkIntersections(inter, dest);
var other = inter;
while (other) {
linkIntersections(other._intersection, inter);
other = other._next;
}
} else {
segment._intersection = dest;
}
prevCurve = curve;
prevT = origT;
}
for (var i = 0, l = clearSegments.length; i < l; i++) {
clearSegments[i].clearHandles();
}
}
function getWinding(point, curves, horizontal, testContains) {
var epsilon = 2e-7,
tMin = 4e-7,
tMax = 1 - tMin,
px = point.x,
py = point.y,
windLeft = 0,
windRight = 0,
roots = [],
abs = Math.abs;
if (horizontal) {
var yTop = -Infinity,
yBottom = Infinity,
yBefore = py - epsilon,
yAfter = py + epsilon;
for (var i = 0, l = curves.length; i < l; i++) {
var values = curves[i].values;
if (Curve.solveCubic(values, 0, px, roots, 0, 1) > 0) {
for (var j = roots.length - 1; j >= 0; j--) {
var y = Curve.getPoint(values, roots[j]).y;
if (y < yBefore && y > yTop) {
yTop = y;
} else if (y > yAfter && y < yBottom) {
yBottom = y;
}
}
}
}
yTop = (yTop + py) / 2;
yBottom = (yBottom + py) / 2;
if (yTop > -Infinity)
windLeft = getWinding(new Point(px, yTop), curves, false,
testContains);
if (yBottom < Infinity)
windRight = getWinding(new Point(px, yBottom), curves, false,
testContains);
} else {
var xBefore = px - epsilon,
xAfter = px + epsilon;
var startCounted = false,
prevCurve,
prevT;
for (var i = 0, l = curves.length; i < l; i++) {
var curve = curves[i],
values = curve.values,
winding = curve.winding;
if (winding && (winding === 1
&& py >= values[1] && py <= values[7]
|| py >= values[7] && py <= values[1])
&& Curve.solveCubic(values, 1, py, roots, 0, 1) === 1) {
var t = roots[0];
if (!(
t > tMax && startCounted && curve.next !== curves[i + 1]
|| t < tMin && prevT > tMax
&& curve.previous === prevCurve)) {
var x = Curve.getPoint(values, t).x,
slope = Curve.getTangent(values, t).y,
counted = false;
if (Numerical.isZero(slope) && !Curve.isStraight(values)
|| t < tMin && slope * Curve.getTangent(
curve.previous.values, 1).y < 0
|| t > tMax && slope * Curve.getTangent(
curve.next.values, 0).y < 0) {
if (testContains && x >= xBefore && x <= xAfter) {
++windLeft;
++windRight;
counted = true;
}
} else if (x <= xBefore) {
windLeft += winding;
counted = true;
} else if (x >= xAfter) {
windRight += winding;
counted = true;
}
if (curve.previous !== curves[i - 1])
startCounted = t < tMin && counted;
}
prevCurve = curve;
prevT = t;
}
}
}
return Math.max(abs(windLeft), abs(windRight));
}
function propagateWinding(segment, path1, path2, monoCurves, operation) {
var epsilon = 2e-7,
chain = [],
start = segment,
totalLength = 0,
windingSum = 0;
do {
var curve = segment.getCurve(),
length = curve.getLength();
chain.push({ segment: segment, curve: curve, length: length });
totalLength += length;
segment = segment.getNext();
} while (segment && !segment._intersection && segment !== start);
for (var i = 0; i < 3; i++) {
var length = totalLength * (i + 1) / 4;
for (var k = 0, m = chain.length; k < m; k++) {
var node = chain[k],
curveLength = node.length;
if (length <= curveLength) {
if (length < epsilon || curveLength - length < epsilon)
length = curveLength / 2;
var curve = node.curve,
path = curve._path,
parent = path._parent,
pt = curve.getPointAt(length),
hor = curve.isHorizontal();
if (parent instanceof CompoundPath)
path = parent;
windingSum += operation === 'subtract' && path2
&& (path === path1 && path2._getWinding(pt, hor)
|| path === path2 && !path1._getWinding(pt, hor))
? 0
: getWinding(pt, monoCurves, hor);
break;
}
length -= curveLength;
}
}
var winding = Math.round(windingSum / 3);
for (var j = chain.length - 1; j >= 0; j--)
chain[j].segment._winding = winding;
}
function tracePaths(segments, operation) {
var paths = [],
start,
otherStart,
operator = operators[operation],
overlapWinding = {
unite: { 1: 2 },
intersect: { 2: 1 }
}[operation];
function isValid(seg, adjusted) {
if (seg._visited)
return false;
if (!operator)
return true;
var winding = seg._winding,
inter = seg._intersection;
if (inter && adjusted && overlapWinding && inter.isOverlap())
winding = overlapWinding[winding] || winding;
return operator(winding);
}
function isStart(seg) {
return seg === start || seg === otherStart;
}
function findBestIntersection(inter, strict) {
if (!inter._next)
return inter;
while (inter) {
var seg = inter._segment,
nextSeg = seg.getNext(),
nextInter = nextSeg._intersection;
if (isStart(nextSeg)
|| !seg._visited && !nextSeg._visited
&& (!operator
|| (!strict || isValid(seg))
&& (!(strict && nextInter && nextInter.isOverlap())
&& isValid(nextSeg)
|| !strict && nextInter
&& isValid(nextInter._segment))
))
return inter;
inter = inter._next;
}
return null;
}
function findStartSegment(inter, next) {
while (inter) {
var seg = inter._segment;
if (isStart(seg))
return seg;
inter = inter[next ? '_next' : '_prev'];
}
}
for (var i = 0, l = segments.length; i < l; i++) {
var seg = segments[i],
path = null,
finished = false;
if (!isValid(seg, true))
continue;
start = otherStart = null;
while (!finished) {
var inter = seg._intersection,
handleIn = path && seg._handleIn;
inter = inter && (findBestIntersection(inter, true)
|| findBestIntersection(inter, false)) || inter;
var other = inter && inter._segment;
if (other && isValid(other))
seg = other;
if (seg._visited) {
finished = isStart(seg);
if (!finished && inter) {
var found = findStartSegment(inter, true)
|| findStartSegment(inter, false);
if (found) {
seg = found;
finished = true;
}
}
break;
}
if (!path) {
path = new Path(Item.NO_INSERT);
start = seg;
otherStart = other;
}
path.add(new Segment(seg._point, handleIn, seg._handleOut));
seg._visited = true;
seg = seg.getNext();
finished = isStart(seg);
}
if (finished) {
path.firstSegment.setHandleIn(seg._handleIn);
path.setClosed(true);
} else if (path) {
console.error('Boolean operation resulted in open path',
'segments =', path._segments.length,
'length =', path.getLength());
path = null;
}
if (path && (path._segments.length > 8
|| !Numerical.isZero(path.getArea()))) {
paths.push(path);
path = null;
}
}
return paths;
}
return {
_getWinding: function(point, horizontal, testContains) {
return getWinding(point, this._getMonoCurves(),
horizontal, testContains);
},
unite: function(path) {
return computeBoolean(this, path, 'unite');
},
intersect: function(path) {
return computeBoolean(this, path, 'intersect');
},
subtract: function(path) {
return computeBoolean(this, path, 'subtract');
},
exclude: function(path) {
return computeBoolean(this, path, 'exclude');
},
divide: function(path) {
return finishBoolean(Group,
[this.subtract(path), this.intersect(path)],
this, path, true);
},
resolveCrossings: function() {
var crossings = this.getCrossings();
if (!crossings.length)
return this;
divideLocations(CurveLocation.expand(crossings));
var paths = this._children || [this],
segments = [];
for (var i = 0, l = paths.length; i < l; i++) {
segments.push.apply(segments, paths[i]._segments);
}
return finishBoolean(CompoundPath, tracePaths(segments),
this, null, false);
}
};
});
Path.inject({
_getMonoCurves: function() {
var monoCurves = this._monoCurves,
prevCurve;
function insertCurve(v) {
var y0 = v[1],
y1 = v[7],
curve = {
values: v,
winding: y0 === y1
? 0
: y0 > y1
? -1
: 1,
previous: prevCurve,
next: null
};
if (prevCurve)
prevCurve.next = curve;
monoCurves.push(curve);
prevCurve = curve;
}
function handleCurve(v) {
if (Curve.getLength(v) === 0)
return;
var y0 = v[1],
y1 = v[3],
y2 = v[5],
y3 = v[7];
if (Curve.isStraight(v)) {
insertCurve(v);
} else {
var a = 3 * (y1 - y2) - y0 + y3,
b = 2 * (y0 + y2) - 4 * y1,
c = y1 - y0,
tMin = 4e-7,
tMax = 1 - tMin,
roots = [],
n = Numerical.solveQuadratic(a, b, c, roots, tMin, tMax);
if (n === 0) {
insertCurve(v);
} else {
roots.sort();
var t = roots[0],
parts = Curve.subdivide(v, t);
insertCurve(parts[0]);
if (n > 1) {
t = (roots[1] - t) / (1 - t);
parts = Curve.subdivide(parts[1], t);
insertCurve(parts[0]);
}
insertCurve(parts[1]);
}
}
}
if (!monoCurves) {
monoCurves = this._monoCurves = [];
var curves = this.getCurves(),
segments = this._segments;
for (var i = 0, l = curves.length; i < l; i++)
handleCurve(curves[i].getValues());
if (!this._closed && segments.length > 1) {
var p1 = segments[segments.length - 1]._point,
p2 = segments[0]._point,
p1x = p1._x, p1y = p1._y,
p2x = p2._x, p2y = p2._y;
handleCurve([p1x, p1y, p1x, p1y, p2x, p2y, p2x, p2y]);
}
if (monoCurves.length > 0) {
var first = monoCurves[0],
last = monoCurves[monoCurves.length - 1];
first.previous = last;
last.next = first;
}
}
return monoCurves;
},
getInteriorPoint: function() {
var bounds = this.getBounds(),
point = bounds.getCenter(true);
if (!this.contains(point)) {
var curves = this._getMonoCurves(),
roots = [],
y = point.y,
xIntercepts = [];
for (var i = 0, l = curves.length; i < l; i++) {
var values = curves[i].values;
if ((curves[i].winding === 1
&& y >= values[1] && y <= values[7]
|| y >= values[7] && y <= values[1])
&& Curve.solveCubic(values, 1, y, roots, 0, 1) > 0) {
for (var j = roots.length - 1; j >= 0; j--)
xIntercepts.push(Curve.getPoint(values, roots[j]).x);
}
if (xIntercepts.length > 1)
break;
}
point.x = (xIntercepts[0] + xIntercepts[1]) / 2;
}
return point;
},
reorient: function() {
this.setClockwise(true);
return this;
}
});
CompoundPath.inject({
_getMonoCurves: function() {
var children = this._children,
monoCurves = [];
for (var i = 0, l = children.length; i < l; i++)
monoCurves.push.apply(monoCurves, children[i]._getMonoCurves());
return monoCurves;
},
reorient: function() {
var children = this.removeChildren().sort(function(a, b) {
return b.getBounds().getArea() - a.getBounds().getArea();
});
if (children.length > 0) {
this.addChildren(children);
var clockwise = children[0].isClockwise();
for (var i = 1, l = children.length; i < l; i++) {
var point = children[i].getInteriorPoint(),
counters = 0;
for (var j = i - 1; j >= 0; j--) {
if (children[j].contains(point))
counters++;
}
children[i].setClockwise(counters % 2 === 0 && clockwise);
}
}
return this;
}
});
var PathIterator = Base.extend({
_class: 'PathIterator',
initialize: function(path, maxRecursion, tolerance, matrix) {
var curves = [],
parts = [],
length = 0,
minDifference = 1 / (maxRecursion || 32),
segments = path._segments,
segment1 = segments[0],
segment2;
function addCurve(segment1, segment2) {
var curve = Curve.getValues(segment1, segment2, matrix);
curves.push(curve);
computeParts(curve, segment1._index, 0, 1);
}
function computeParts(curve, index, minT, maxT) {
if ((maxT - minT) > minDifference
&& !Curve.isFlatEnough(curve, tolerance || 0.25)) {
var split = Curve.subdivide(curve, 0.5),
halfT = (minT + maxT) / 2;
computeParts(split[0], index, minT, halfT);
computeParts(split[1], index, halfT, maxT);
} else {
var x = curve[6] - curve[0],
y = curve[7] - curve[1],
dist = Math.sqrt(x * x + y * y);
if (dist > 1e-6) {
length += dist;
parts.push({
offset: length,
value: maxT,
index: index
});
}
}
}
for (var i = 1, l = segments.length; i < l; i++) {
segment2 = segments[i];
addCurve(segment1, segment2);
segment1 = segment2;
}
if (path._closed)
addCurve(segment2, segments[0]);
this.curves = curves;
this.parts = parts;
this.length = length;
this.index = 0;
},
getParameterAt: function(offset) {
var i, j = this.index;
for (;;) {
i = j;
if (j == 0 || this.parts[--j].offset < offset)
break;
}
for (var l = this.parts.length; i < l; i++) {
var part = this.parts[i];
if (part.offset >= offset) {
this.index = i;
var prev = this.parts[i - 1];
var prevVal = prev && prev.index == part.index ? prev.value : 0,
prevLen = prev ? prev.offset : 0;
return {
value: prevVal + (part.value - prevVal)
* (offset - prevLen) / (part.offset - prevLen),
index: part.index
};
}
}
var part = this.parts[this.parts.length - 1];
return {
value: 1,
index: part.index
};
},
drawPart: function(ctx, from, to) {
from = this.getParameterAt(from);
to = this.getParameterAt(to);
for (var i = from.index; i <= to.index; i++) {
var curve = Curve.getPart(this.curves[i],
i == from.index ? from.value : 0,
i == to.index ? to.value : 1);
if (i == from.index)
ctx.moveTo(curve[0], curve[1]);
ctx.bezierCurveTo.apply(ctx, curve.slice(2));
}
}
}, Base.each(Curve.evaluateMethods,
function(name) {
this[name + 'At'] = function(offset, weighted) {
var param = this.getParameterAt(offset);
return Curve[name](this.curves[param.index], param.value, weighted);
};
}, {})
);
var PathFitter = Base.extend({
initialize: function(path, error) {
var points = this.points = [],
segments = path._segments,
prev;
for (var i = 0, l = segments.length; i < l; i++) {
var point = segments[i].point.clone();
if (!prev || !prev.equals(point)) {
points.push(point);
prev = point;
}
}
if (path._closed) {
this.closed = true;
points.unshift(points[points.length - 1]);
points.push(points[1]);
}
this.error = error;
},
fit: function() {
var points = this.points,
length = points.length,
segments = this.segments = length > 0
? [new Segment(points[0])] : [];
if (length > 1)
this.fitCubic(0, length - 1,
points[1].subtract(points[0]).normalize(),
points[length - 2].subtract(points[length - 1]).normalize());
if (this.closed) {
segments.shift();
segments.pop();
}
return segments;
},
fitCubic: function(first, last, tan1, tan2) {
if (last - first == 1) {
var pt1 = this.points[first],
pt2 = this.points[last],
dist = pt1.getDistance(pt2) / 3;
this.addCurve([pt1, pt1.add(tan1.normalize(dist)),
pt2.add(tan2.normalize(dist)), pt2]);
return;
}
var uPrime = this.chordLengthParameterize(first, last),
maxError = Math.max(this.error, this.error * this.error),
split,
parametersInOrder = true;
for (var i = 0; i <= 4; i++) {
var curve = this.generateBezier(first, last, uPrime, tan1, tan2);
var max = this.findMaxError(first, last, curve, uPrime);
if (max.error < this.error && parametersInOrder) {
this.addCurve(curve);
return;
}
split = max.index;
if (max.error >= maxError)
break;
parametersInOrder = this.reparameterize(first, last, uPrime, curve);
maxError = max.error;
}
var V1 = this.points[split - 1].subtract(this.points[split]),
V2 = this.points[split].subtract(this.points[split + 1]),
tanCenter = V1.add(V2).divide(2).normalize();
this.fitCubic(first, split, tan1, tanCenter);
this.fitCubic(split, last, tanCenter.negate(), tan2);
},
addCurve: function(curve) {
var prev = this.segments[this.segments.length - 1];
prev.setHandleOut(curve[1].subtract(curve[0]));
this.segments.push(
new Segment(curve[3], curve[2].subtract(curve[3])));
},
generateBezier: function(first, last, uPrime, tan1, tan2) {
var epsilon = 1e-12,
pt1 = this.points[first],
pt2 = this.points[last],
C = [[0, 0], [0, 0]],
X = [0, 0];
for (var i = 0, l = last - first + 1; i < l; i++) {
var u = uPrime[i],
t = 1 - u,
b = 3 * u * t,
b0 = t * t * t,
b1 = b * t,
b2 = b * u,
b3 = u * u * u,
a1 = tan1.normalize(b1),
a2 = tan2.normalize(b2),
tmp = this.points[first + i]
.subtract(pt1.multiply(b0 + b1))
.subtract(pt2.multiply(b2 + b3));
C[0][0] += a1.dot(a1);
C[0][1] += a1.dot(a2);
C[1][0] = C[0][1];
C[1][1] += a2.dot(a2);
X[0] += a1.dot(tmp);
X[1] += a2.dot(tmp);
}
var detC0C1 = C[0][0] * C[1][1] - C[1][0] * C[0][1],
alpha1, alpha2;
if (Math.abs(detC0C1) > epsilon) {
var detC0X = C[0][0] * X[1] - C[1][0] * X[0],
detXC1 = X[0] * C[1][1] - X[1] * C[0][1];
alpha1 = detXC1 / detC0C1;
alpha2 = detC0X / detC0C1;
} else {
var c0 = C[0][0] + C[0][1],
c1 = C[1][0] + C[1][1];
if (Math.abs(c0) > epsilon) {
alpha1 = alpha2 = X[0] / c0;
} else if (Math.abs(c1) > epsilon) {
alpha1 = alpha2 = X[1] / c1;
} else {
alpha1 = alpha2 = 0;
}
}
var segLength = pt2.getDistance(pt1),
eps = epsilon * segLength,
handle1,
handle2;
if (alpha1 < eps || alpha2 < eps) {
alpha1 = alpha2 = segLength / 3;
} else {
var line = pt2.subtract(pt1);
handle1 = tan1.normalize(alpha1);
handle2 = tan2.normalize(alpha2);
if (handle1.dot(line) - handle2.dot(line) > segLength * segLength) {
alpha1 = alpha2 = segLength / 3;
handle1 = handle2 = null;
}
}
return [pt1, pt1.add(handle1 || tan1.normalize(alpha1)),
pt2.add(handle2 || tan2.normalize(alpha2)), pt2];
},
reparameterize: function(first, last, u, curve) {
for (var i = first; i <= last; i++) {
u[i - first] = this.findRoot(curve, this.points[i], u[i - first]);
}
for (var i = 1, l = u.length; i < l; i++) {
if (u[i] <= u[i - 1])
return false;
}
return true;
},
findRoot: function(curve, point, u) {
var curve1 = [],
curve2 = [];
for (var i = 0; i <= 2; i++) {
curve1[i] = curve[i + 1].subtract(curve[i]).multiply(3);
}
for (var i = 0; i <= 1; i++) {
curve2[i] = curve1[i + 1].subtract(curve1[i]).multiply(2);
}
var pt = this.evaluate(3, curve, u),
pt1 = this.evaluate(2, curve1, u),
pt2 = this.evaluate(1, curve2, u),
diff = pt.subtract(point),
df = pt1.dot(pt1) + diff.dot(pt2);
if (Math.abs(df) < 1e-6)
return u;
return u - diff.dot(pt1) / df;
},
evaluate: function(degree, curve, t) {
var tmp = curve.slice();
for (var i = 1; i <= degree; i++) {
for (var j = 0; j <= degree - i; j++) {
tmp[j] = tmp[j].multiply(1 - t).add(tmp[j + 1].multiply(t));
}
}
return tmp[0];
},
chordLengthParameterize: function(first, last) {
var u = [0];
for (var i = first + 1; i <= last; i++) {
u[i - first] = u[i - first - 1]
+ this.points[i].getDistance(this.points[i - 1]);
}
for (var i = 1, m = last - first; i <= m; i++) {
u[i] /= u[m];
}
return u;
},
findMaxError: function(first, last, curve, u) {
var index = Math.floor((last - first + 1) / 2),
maxDist = 0;
for (var i = first + 1; i < last; i++) {
var P = this.evaluate(3, curve, u[i - first]);
var v = P.subtract(this.points[i]);
var dist = v.x * v.x + v.y * v.y;
if (dist >= maxDist) {
maxDist = dist;
index = i;
}
}
return {
error: maxDist,
index: index
};
}
});
var TextItem = Item.extend({
_class: 'TextItem',
_boundsSelected: true,
_applyMatrix: false,
_canApplyMatrix: false,
_serializeFields: {
content: null
},
_boundsGetter: 'getBounds',
initialize: function TextItem(arg) {
this._content = '';
this._lines = [];
var hasProps = arg && Base.isPlainObject(arg)
&& arg.x === undefined && arg.y === undefined;
this._initialize(hasProps && arg, !hasProps && Point.read(arguments));
},
_equals: function(item) {
return this._content === item._content;
},
_clone: function _clone(copy, insert, includeMatrix) {
copy.setContent(this._content);
return _clone.base.call(this, copy, insert, includeMatrix);
},
getContent: function() {
return this._content;
},
setContent: function(content) {
this._content = '' + content;
this._lines = this._content.split(/\r\n|\n|\r/mg);
this._changed(265);
},
isEmpty: function() {
return !this._content;
},
getCharacterStyle: '#getStyle',
setCharacterStyle: '#setStyle',
getParagraphStyle: '#getStyle',
setParagraphStyle: '#setStyle'
});
var PointText = TextItem.extend({
_class: 'PointText',
initialize: function PointText() {
TextItem.apply(this, arguments);
},
clone: function(insert) {
return this._clone(new PointText(Item.NO_INSERT), insert);
},
getPoint: function() {
var point = this._matrix.getTranslation();
return new LinkedPoint(point.x, point.y, this, 'setPoint');
},
setPoint: function() {
var point = Point.read(arguments);
this.translate(point.subtract(this._matrix.getTranslation()));
},
_draw: function(ctx) {
if (!this._content)
return;
this._setStyles(ctx);
var style = this._style,
lines = this._lines,
leading = style.getLeading(),
shadowColor = ctx.shadowColor;
ctx.font = style.getFontStyle();
ctx.textAlign = style.getJustification();
for (var i = 0, l = lines.length; i < l; i++) {
ctx.shadowColor = shadowColor;
var line = lines[i];
if (style.hasFill()) {
ctx.fillText(line, 0, 0);
ctx.shadowColor = 'rgba(0,0,0,0)';
}
if (style.hasStroke())
ctx.strokeText(line, 0, 0);
ctx.translate(0, leading);
}
},
_getBounds: function(getter, matrix) {
var style = this._style,
lines = this._lines,
numLines = lines.length,
justification = style.getJustification(),
leading = style.getLeading(),
width = this.getView().getTextWidth(style.getFontStyle(), lines),
x = 0;
if (justification !== 'left')
x -= width / (justification === 'center' ? 2: 1);
var bounds = new Rectangle(x,
numLines ? - 0.75 * leading : 0,
width, numLines * leading);
return matrix ? matrix._transformBounds(bounds, bounds) : bounds;
}
});
var Color = Base.extend(new function() {
var types = {
gray: ['gray'],
rgb: ['red', 'green', 'blue'],
hsb: ['hue', 'saturation', 'brightness'],
hsl: ['hue', 'saturation', 'lightness'],
gradient: ['gradient', 'origin', 'destination', 'highlight']
};
var componentParsers = {},
colorCache = {},
colorCtx;
function fromCSS(string) {
var match = string.match(/^#(\w{1,2})(\w{1,2})(\w{1,2})$/),
components;
if (match) {
components = [0, 0, 0];
for (var i = 0; i < 3; i++) {
var value = match[i + 1];
components[i] = parseInt(value.length == 1
? value + value : value, 16) / 255;
}
} else if (match = string.match(/^rgba?\((.*)\)$/)) {
components = match[1].split(',');
for (var i = 0, l = components.length; i < l; i++) {
var value = +components[i];
components[i] = i < 3 ? value / 255 : value;
}
} else {
var cached = colorCache[string];
if (!cached) {
if (!colorCtx) {
colorCtx = CanvasProvider.getContext(1, 1);
colorCtx.globalCompositeOperation = 'copy';
}
colorCtx.fillStyle = 'rgba(0,0,0,0)';
colorCtx.fillStyle = string;
colorCtx.fillRect(0, 0, 1, 1);
var data = colorCtx.getImageData(0, 0, 1, 1).data;
cached = colorCache[string] = [
data[0] / 255,
data[1] / 255,
data[2] / 255
];
}
components = cached.slice();
}
return components;
}
var hsbIndices = [
[0, 3, 1],
[2, 0, 1],
[1, 0, 3],
[1, 2, 0],
[3, 1, 0],
[0, 1, 2]
];
var converters = {
'rgb-hsb': function(r, g, b) {
var max = Math.max(r, g, b),
min = Math.min(r, g, b),
delta = max - min,
h = delta === 0 ? 0
: ( max == r ? (g - b) / delta + (g < b ? 6 : 0)
: max == g ? (b - r) / delta + 2
: (r - g) / delta + 4) * 60;
return [h, max === 0 ? 0 : delta / max, max];
},
'hsb-rgb': function(h, s, b) {
h = (((h / 60) % 6) + 6) % 6;
var i = Math.floor(h),
f = h - i,
i = hsbIndices[i],
v = [
b,
b * (1 - s),
b * (1 - s * f),
b * (1 - s * (1 - f))
];
return [v[i[0]], v[i[1]], v[i[2]]];
},
'rgb-hsl': function(r, g, b) {
var max = Math.max(r, g, b),
min = Math.min(r, g, b),
delta = max - min,
achromatic = delta === 0,
h = achromatic ? 0
: ( max == r ? (g - b) / delta + (g < b ? 6 : 0)
: max == g ? (b - r) / delta + 2
: (r - g) / delta + 4) * 60,
l = (max + min) / 2,
s = achromatic ? 0 : l < 0.5
? delta / (max + min)
: delta / (2 - max - min);
return [h, s, l];
},
'hsl-rgb': function(h, s, l) {
h = (((h / 360) % 1) + 1) % 1;
if (s === 0)
return [l, l, l];
var t3s = [ h + 1 / 3, h, h - 1 / 3 ],
t2 = l < 0.5 ? l * (1 + s) : l + s - l * s,
t1 = 2 * l - t2,
c = [];
for (var i = 0; i < 3; i++) {
var t3 = t3s[i];
if (t3 < 0) t3 += 1;
if (t3 > 1) t3 -= 1;
c[i] = 6 * t3 < 1
? t1 + (t2 - t1) * 6 * t3
: 2 * t3 < 1
? t2
: 3 * t3 < 2
? t1 + (t2 - t1) * ((2 / 3) - t3) * 6
: t1;
}
return c;
},
'rgb-gray': function(r, g, b) {
return [r * 0.2989 + g * 0.587 + b * 0.114];
},
'gray-rgb': function(g) {
return [g, g, g];
},
'gray-hsb': function(g) {
return [0, 0, g];
},
'gray-hsl': function(g) {
return [0, 0, g];
},
'gradient-rgb': function() {
return [];
},
'rgb-gradient': function() {
return [];
}
};
return Base.each(types, function(properties, type) {
componentParsers[type] = [];
Base.each(properties, function(name, index) {
var part = Base.capitalize(name),
hasOverlap = /^(hue|saturation)$/.test(name),
parser = componentParsers[type][index] = name === 'gradient'
? function(value) {
var current = this._components[0];
value = Gradient.read(Array.isArray(value) ? value
: arguments, 0, { readNull: true });
if (current !== value) {
if (current)
current._removeOwner(this);
if (value)
value._addOwner(this);
}
return value;
}
: type === 'gradient'
? function() {
return Point.read(arguments, 0, {
readNull: name === 'highlight',
clone: true
});
}
: function(value) {
return value == null || isNaN(value) ? 0 : value;
};
this['get' + part] = function() {
return this._type === type
|| hasOverlap && /^hs[bl]$/.test(this._type)
? this._components[index]
: this._convert(type)[index];
};
this['set' + part] = function(value) {
if (this._type !== type
&& !(hasOverlap && /^hs[bl]$/.test(this._type))) {
this._components = this._convert(type);
this._properties = types[type];
this._type = type;
}
this._components[index] = parser.call(this, value);
this._changed();
};
}, this);
}, {
_class: 'Color',
_readIndex: true,
initialize: function Color(arg) {
var slice = Array.prototype.slice,
args = arguments,
read = 0,
type,
components,
alpha,
values;
if (Array.isArray(arg)) {
args = arg;
arg = args[0];
}
var argType = arg != null && typeof arg;
if (argType === 'string' && arg in types) {
type = arg;
arg = args[1];
if (Array.isArray(arg)) {
components = arg;
alpha = args[2];
} else {
if (this.__read)
read = 1;
args = slice.call(args, 1);
argType = typeof arg;
}
}
if (!components) {
values = argType === 'number'
? args
: argType === 'object' && arg.length != null
? arg
: null;
if (values) {
if (!type)
type = values.length >= 3
? 'rgb'
: 'gray';
var length = types[type].length;
alpha = values[length];
if (this.__read)
read += values === arguments
? length + (alpha != null ? 1 : 0)
: 1;
if (values.length > length)
values = slice.call(values, 0, length);
} else if (argType === 'string') {
type = 'rgb';
components = fromCSS(arg);
if (components.length === 4) {
alpha = components[3];
components.length--;
}
} else if (argType === 'object') {
if (arg.constructor === Color) {
type = arg._type;
components = arg._components.slice();
alpha = arg._alpha;
if (type === 'gradient') {
for (var i = 1, l = components.length; i < l; i++) {
var point = components[i];
if (point)
components[i] = point.clone();
}
}
} else if (arg.constructor === Gradient) {
type = 'gradient';
values = args;
} else {
type = 'hue' in arg
? 'lightness' in arg
? 'hsl'
: 'hsb'
: 'gradient' in arg || 'stops' in arg
|| 'radial' in arg
? 'gradient'
: 'gray' in arg
? 'gray'
: 'rgb';
var properties = types[type],
parsers = componentParsers[type];
this._components = components = [];
for (var i = 0, l = properties.length; i < l; i++) {
var value = arg[properties[i]];
if (value == null && i === 0 && type === 'gradient'
&& 'stops' in arg) {
value = {
stops: arg.stops,
radial: arg.radial
};
}
value = parsers[i].call(this, value);
if (value != null)
components[i] = value;
}
alpha = arg.alpha;
}
}
if (this.__read && type)
read = 1;
}
this._type = type || 'rgb';
this._id = UID.get(Color);
if (!components) {
this._components = components = [];
var parsers = componentParsers[this._type];
for (var i = 0, l = parsers.length; i < l; i++) {
var value = parsers[i].call(this, values && values[i]);
if (value != null)
components[i] = value;
}
}
this._components = components;
this._properties = types[this._type];
this._alpha = alpha;
if (this.__read)
this.__read = read;
},
_serialize: function(options, dictionary) {
var components = this.getComponents();
return Base.serialize(
/^(gray|rgb)$/.test(this._type)
? components
: [this._type].concat(components),
options, true, dictionary);
},
_changed: function() {
this._canvasStyle = null;
if (this._owner)
this._owner._changed(65);
},
_convert: function(type) {
var converter;
return this._type === type
? this._components.slice()
: (converter = converters[this._type + '-' + type])
? converter.apply(this, this._components)
: converters['rgb-' + type].apply(this,
converters[this._type + '-rgb'].apply(this,
this._components));
},
convert: function(type) {
return new Color(type, this._convert(type), this._alpha);
},
getType: function() {
return this._type;
},
setType: function(type) {
this._components = this._convert(type);
this._properties = types[type];
this._type = type;
},
getComponents: function() {
var components = this._components.slice();
if (this._alpha != null)
components.push(this._alpha);
return components;
},
getAlpha: function() {
return this._alpha != null ? this._alpha : 1;
},
setAlpha: function(alpha) {
this._alpha = alpha == null ? null : Math.min(Math.max(alpha, 0), 1);
this._changed();
},
hasAlpha: function() {
return this._alpha != null;
},
equals: function(color) {
var col = Base.isPlainValue(color, true)
? Color.read(arguments)
: color;
return col === this || col && this._class === col._class
&& this._type === col._type
&& this._alpha === col._alpha
&& Base.equals(this._components, col._components)
|| false;
},
toString: function() {
var properties = this._properties,
parts = [],
isGradient = this._type === 'gradient',
f = Formatter.instance;
for (var i = 0, l = properties.length; i < l; i++) {
var value = this._components[i];
if (value != null)
parts.push(properties[i] + ': '
+ (isGradient ? value : f.number(value)));
}
if (this._alpha != null)
parts.push('alpha: ' + f.number(this._alpha));
return '{ ' + parts.join(', ') + ' }';
},
toCSS: function(hex) {
var components = this._convert('rgb'),
alpha = hex || this._alpha == null ? 1 : this._alpha;
function convert(val) {
return Math.round((val < 0 ? 0 : val > 1 ? 1 : val) * 255);
}
components = [
convert(components[0]),
convert(components[1]),
convert(components[2])
];
if (alpha < 1)
components.push(alpha < 0 ? 0 : alpha);
return hex
? '#' + ((1 << 24) + (components[0] << 16)
+ (components[1] << 8)
+ components[2]).toString(16).slice(1)
: (components.length == 4 ? 'rgba(' : 'rgb(')
+ components.join(',') + ')';
},
toCanvasStyle: function(ctx) {
if (this._canvasStyle)
return this._canvasStyle;
if (this._type !== 'gradient')
return this._canvasStyle = this.toCSS();
var components = this._components,
gradient = components[0],
stops = gradient._stops,
origin = components[1],
destination = components[2],
canvasGradient;
if (gradient._radial) {
var radius = destination.getDistance(origin),
highlight = components[3];
if (highlight) {
var vector = highlight.subtract(origin);
if (vector.getLength() > radius)
highlight = origin.add(vector.normalize(radius - 0.1));
}
var start = highlight || origin;
canvasGradient = ctx.createRadialGradient(start.x, start.y,
0, origin.x, origin.y, radius);
} else {
canvasGradient = ctx.createLinearGradient(origin.x, origin.y,
destination.x, destination.y);
}
for (var i = 0, l = stops.length; i < l; i++) {
var stop = stops[i];
canvasGradient.addColorStop(stop._rampPoint,
stop._color.toCanvasStyle());
}
return this._canvasStyle = canvasGradient;
},
transform: function(matrix) {
if (this._type === 'gradient') {
var components = this._components;
for (var i = 1, l = components.length; i < l; i++) {
var point = components[i];
matrix._transformPoint(point, point, true);
}
this._changed();
}
},
statics: {
_types: types,
random: function() {
var random = Math.random;
return new Color(random(), random(), random());
}
}
});
},
new function() {
var operators = {
add: function(a, b) {
return a + b;
},
subtract: function(a, b) {
return a - b;
},
multiply: function(a, b) {
return a * b;
},
divide: function(a, b) {
return a / b;
}
};
return Base.each(operators, function(operator, name) {
this[name] = function(color) {
color = Color.read(arguments);
var type = this._type,
components1 = this._components,
components2 = color._convert(type);
for (var i = 0, l = components1.length; i < l; i++)
components2[i] = operator(components1[i], components2[i]);
return new Color(type, components2,
this._alpha != null
? operator(this._alpha, color.getAlpha())
: null);
};
}, {
});
});
var Gradient = Base.extend({
_class: 'Gradient',
initialize: function Gradient(stops, radial) {
this._id = UID.get();
if (stops && this._set(stops))
stops = radial = null;
if (!this._stops)
this.setStops(stops || ['white', 'black']);
if (this._radial == null)
this.setRadial(typeof radial === 'string' && radial === 'radial'
|| radial || false);
},
_serialize: function(options, dictionary) {
return dictionary.add(this, function() {
return Base.serialize([this._stops, this._radial],
options, true, dictionary);
});
},
_changed: function() {
for (var i = 0, l = this._owners && this._owners.length; i < l; i++)
this._owners[i]._changed();
},
_addOwner: function(color) {
if (!this._owners)
this._owners = [];
this._owners.push(color);
},
_removeOwner: function(color) {
var index = this._owners ? this._owners.indexOf(color) : -1;
if (index != -1) {
this._owners.splice(index, 1);
if (this._owners.length === 0)
this._owners = undefined;
}
},
clone: function() {
var stops = [];
for (var i = 0, l = this._stops.length; i < l; i++)
stops[i] = this._stops[i].clone();
return new Gradient(stops, this._radial);
},
getStops: function() {
return this._stops;
},
setStops: function(stops) {
if (this.stops) {
for (var i = 0, l = this._stops.length; i < l; i++)
this._stops[i]._owner = undefined;
}
if (stops.length < 2)
throw new Error(
'Gradient stop list needs to contain at least two stops.');
this._stops = GradientStop.readAll(stops, 0, { clone: true });
for (var i = 0, l = this._stops.length; i < l; i++) {
var stop = this._stops[i];
stop._owner = this;
if (stop._defaultRamp)
stop.setRampPoint(i / (l - 1));
}
this._changed();
},
getRadial: function() {
return this._radial;
},
setRadial: function(radial) {
this._radial = radial;
this._changed();
},
equals: function(gradient) {
if (gradient === this)
return true;
if (gradient && this._class === gradient._class
&& this._stops.length === gradient._stops.length) {
for (var i = 0, l = this._stops.length; i < l; i++) {
if (!this._stops[i].equals(gradient._stops[i]))
return false;
}
return true;
}
return false;
}
});
var GradientStop = Base.extend({
_class: 'GradientStop',
initialize: function GradientStop(arg0, arg1) {
if (arg0) {
var color, rampPoint;
if (arg1 === undefined && Array.isArray(arg0)) {
color = arg0[0];
rampPoint = arg0[1];
} else if (arg0.color) {
color = arg0.color;
rampPoint = arg0.rampPoint;
} else {
color = arg0;
rampPoint = arg1;
}
this.setColor(color);
this.setRampPoint(rampPoint);
}
},
clone: function() {
return new GradientStop(this._color.clone(), this._rampPoint);
},
_serialize: function(options, dictionary) {
return Base.serialize([this._color, this._rampPoint], options, true,
dictionary);
},
_changed: function() {
if (this._owner)
this._owner._changed(65);
},
getRampPoint: function() {
return this._rampPoint;
},
setRampPoint: function(rampPoint) {
this._defaultRamp = rampPoint == null;
this._rampPoint = rampPoint || 0;
this._changed();
},
getColor: function() {
return this._color;
},
setColor: function(color) {
this._color = Color.read(arguments);
if (this._color === color)
this._color = color.clone();
this._color._owner = this;
this._changed();
},
equals: function(stop) {
return stop === this || stop && this._class === stop._class
&& this._color.equals(stop._color)
&& this._rampPoint == stop._rampPoint
|| false;
}
});
var Style = Base.extend(new function() {
var defaults = {
fillColor: undefined,
strokeColor: undefined,
strokeWidth: 1,
strokeCap: 'butt',
strokeJoin: 'miter',
strokeScaling: true,
miterLimit: 10,
dashOffset: 0,
dashArray: [],
windingRule: 'nonzero',
shadowColor: undefined,
shadowBlur: 0,
shadowOffset: new Point(),
selectedColor: undefined,
fontFamily: 'sans-serif',
fontWeight: 'normal',
fontSize: 12,
font: 'sans-serif',
leading: null,
justification: 'left'
};
var flags = {
strokeWidth: 97,
strokeCap: 97,
strokeJoin: 97,
strokeScaling: 105,
miterLimit: 97,
fontFamily: 9,
fontWeight: 9,
fontSize: 9,
font: 9,
leading: 9,
justification: 9
};
var item = { beans: true },
fields = {
_defaults: defaults,
_textDefaults: new Base(defaults, {
fillColor: new Color()
}),
beans: true
};
Base.each(defaults, function(value, key) {
var isColor = /Color$/.test(key),
isPoint = key === 'shadowOffset',
part = Base.capitalize(key),
flag = flags[key],
set = 'set' + part,
get = 'get' + part;
fields[set] = function(value) {
var owner = this._owner,
children = owner && owner._children;
if (children && children.length > 0
&& !(owner instanceof CompoundPath)) {
for (var i = 0, l = children.length; i < l; i++)
children[i]._style[set](value);
} else {
var old = this._values[key];
if (old !== value) {
if (isColor) {
if (old)
old._owner = undefined;
if (value && value.constructor === Color) {
if (value._owner)
value = value.clone();
value._owner = owner;
}
}
this._values[key] = value;
if (owner)
owner._changed(flag || 65);
}
}
};
fields[get] = function(_dontMerge) {
var owner = this._owner,
children = owner && owner._children,
value;
if (!children || children.length === 0 || _dontMerge
|| owner instanceof CompoundPath) {
var value = this._values[key];
if (value === undefined) {
value = this._defaults[key];
if (value && value.clone)
value = value.clone();
} else {
var ctor = isColor ? Color : isPoint ? Point : null;
if (ctor && !(value && value.constructor === ctor)) {
this._values[key] = value = ctor.read([value], 0,
{ readNull: true, clone: true });
if (value && isColor)
value._owner = owner;
}
}
return value;
}
for (var i = 0, l = children.length; i < l; i++) {
var childValue = children[i]._style[get]();
if (i === 0) {
value = childValue;
} else if (!Base.equals(value, childValue)) {
return undefined;
}
}
return value;
};
item[get] = function(_dontMerge) {
return this._style[get](_dontMerge);
};
item[set] = function(value) {
this._style[set](value);
};
});
Item.inject(item);
return fields;
}, {
_class: 'Style',
initialize: function Style(style, _owner, _project) {
this._values = {};
this._owner = _owner;
this._project = _owner && _owner._project || _project || paper.project;
if (_owner instanceof TextItem)
this._defaults = this._textDefaults;
if (style)
this.set(style);
},
set: function(style) {
var isStyle = style instanceof Style,
values = isStyle ? style._values : style;
if (values) {
for (var key in values) {
if (key in this._defaults) {
var value = values[key];
this[key] = value && isStyle && value.clone
? value.clone() : value;
}
}
}
},
equals: function(style) {
return style === this || style && this._class === style._class
&& Base.equals(this._values, style._values)
|| false;
},
hasFill: function() {
return !!this.getFillColor();
},
hasStroke: function() {
return !!this.getStrokeColor() && this.getStrokeWidth() > 0;
},
hasShadow: function() {
return !!this.getShadowColor() && this.getShadowBlur() > 0;
},
getView: function() {
return this._project.getView();
},
getFontStyle: function() {
var fontSize = this.getFontSize();
return this.getFontWeight()
+ ' ' + fontSize + (/[a-z]/i.test(fontSize + '') ? ' ' : 'px ')
+ this.getFontFamily();
},
getFont: '#getFontFamily',
setFont: '#setFontFamily',
getLeading: function getLeading() {
var leading = getLeading.base.call(this),
fontSize = this.getFontSize();
if (/pt|em|%|px/.test(fontSize))
fontSize = this.getView().getPixelSize(fontSize);
return leading != null ? leading : fontSize * 1.2;
}
});
var DomElement = new function() {
function handlePrefix(el, name, set, value) {
var prefixes = ['', 'webkit', 'moz', 'Moz', 'ms', 'o'],
suffix = name[0].toUpperCase() + name.substring(1);
for (var i = 0; i < 6; i++) {
var prefix = prefixes[i],
key = prefix ? prefix + suffix : name;
if (key in el) {
if (set) {
el[key] = value;
} else {
return el[key];
}
break;
}
}
}
return {
getStyles: function(el) {
var doc = el && el.nodeType !== 9 ? el.ownerDocument : el,
view = doc && doc.defaultView;
return view && view.getComputedStyle(el, '');
},
getBounds: function(el, viewport) {
var doc = el.ownerDocument,
body = doc.body,
html = doc.documentElement,
rect;
try {
rect = el.getBoundingClientRect();
} catch (e) {
rect = { left: 0, top: 0, width: 0, height: 0 };
}
var x = rect.left - (html.clientLeft || body.clientLeft || 0),
y = rect.top - (html.clientTop || body.clientTop || 0);
if (!viewport) {
var view = doc.defaultView;
x += view.pageXOffset || html.scrollLeft || body.scrollLeft;
y += view.pageYOffset || html.scrollTop || body.scrollTop;
}
return new Rectangle(x, y, rect.width, rect.height);
},
getViewportBounds: function(el) {
var doc = el.ownerDocument,
view = doc.defaultView,
html = doc.documentElement;
return new Rectangle(0, 0,
view.innerWidth || html.clientWidth,
view.innerHeight || html.clientHeight
);
},
getOffset: function(el, viewport) {
return DomElement.getBounds(el, viewport).getPoint();
},
getSize: function(el) {
return DomElement.getBounds(el, true).getSize();
},
isInvisible: function(el) {
return DomElement.getSize(el).equals(new Size(0, 0));
},
isInView: function(el) {
return !DomElement.isInvisible(el)
&& DomElement.getViewportBounds(el).intersects(
DomElement.getBounds(el, true));
},
getPrefixed: function(el, name) {
return handlePrefix(el, name);
},
setPrefixed: function(el, name, value) {
if (typeof name === 'object') {
for (var key in name)
handlePrefix(el, key, true, name[key]);
} else {
handlePrefix(el, name, true, value);
}
}
};
};
var DomEvent = {
add: function(el, events) {
for (var type in events) {
var func = events[type],
parts = type.split(/[\s,]+/g);
for (var i = 0, l = parts.length; i < l; i++)
el.addEventListener(parts[i], func, false);
}
},
remove: function(el, events) {
for (var type in events) {
var func = events[type],
parts = type.split(/[\s,]+/g);
for (var i = 0, l = parts.length; i < l; i++)
el.removeEventListener(parts[i], func, false);
}
},
getPoint: function(event) {
var pos = event.targetTouches
? event.targetTouches.length
? event.targetTouches[0]
: event.changedTouches[0]
: event;
return new Point(
pos.pageX || pos.clientX + document.documentElement.scrollLeft,
pos.pageY || pos.clientY + document.documentElement.scrollTop
);
},
getTarget: function(event) {
return event.target || event.srcElement;
},
getRelatedTarget: function(event) {
return event.relatedTarget || event.toElement;
},
getOffset: function(event, target) {
return DomEvent.getPoint(event).subtract(DomElement.getOffset(
target || DomEvent.getTarget(event)));
},
stop: function(event) {
event.stopPropagation();
event.preventDefault();
}
};
DomEvent.requestAnimationFrame = new function() {
var nativeRequest = DomElement.getPrefixed(window, 'requestAnimationFrame'),
requested = false,
callbacks = [],
focused = true,
timer;
DomEvent.add(window, {
focus: function() {
focused = true;
},
blur: function() {
focused = false;
}
});
function handleCallbacks() {
for (var i = callbacks.length - 1; i >= 0; i--) {
var entry = callbacks[i],
func = entry[0],
el = entry[1];
if (!el || (PaperScope.getAttribute(el, 'keepalive') == 'true'
|| focused) && DomElement.isInView(el)) {
callbacks.splice(i, 1);
func();
}
}
if (nativeRequest) {
if (callbacks.length) {
nativeRequest(handleCallbacks);
} else {
requested = false;
}
}
}
return function(callback, element) {
callbacks.push([callback, element]);
if (nativeRequest) {
if (!requested) {
nativeRequest(handleCallbacks);
requested = true;
}
} else if (!timer) {
timer = setInterval(handleCallbacks, 1000 / 60);
}
};
};
var View = Base.extend(Emitter, {
_class: 'View',
initialize: function View(project, element) {
this._project = project;
this._scope = project._scope;
this._element = element;
var size;
if (!this._pixelRatio)
this._pixelRatio = window.devicePixelRatio || 1;
this._id = element.getAttribute('id');
if (this._id == null)
element.setAttribute('id', this._id = 'view-' + View._id++);
DomEvent.add(element, this._viewEvents);
var none = 'none';
DomElement.setPrefixed(element.style, {
userSelect: none,
touchAction: none,
touchCallout: none,
contentZooming: none,
userDrag: none,
tapHighlightColor: 'rgba(0,0,0,0)'
});
function getSize(name) {
return element[name] || parseInt(element.getAttribute(name), 10);
};
function getCanvasSize() {
var size = DomElement.getSize(element);
return size.isNaN() || size.isZero()
? new Size(getSize('width'), getSize('height'))
: size;
};
if (PaperScope.hasAttribute(element, 'resize')) {
var that = this;
DomEvent.add(window, this._windowEvents = {
resize: function() {
that.setViewSize(getCanvasSize());
}
});
}
this._setViewSize(size = getCanvasSize());
if (PaperScope.hasAttribute(element, 'stats')
&& typeof Stats !== 'undefined') {
this._stats = new Stats();
var stats = this._stats.domElement,
style = stats.style,
offset = DomElement.getOffset(element);
style.position = 'absolute';
style.left = offset.x + 'px';
style.top = offset.y + 'px';
document.body.appendChild(stats);
}
View._views.push(this);
View._viewsById[this._id] = this;
this._viewSize = size;
(this._matrix = new Matrix())._owner = this;
this._zoom = 1;
if (!View._focused)
View._focused = this;
this._frameItems = {};
this._frameItemCount = 0;
},
remove: function() {
if (!this._project)
return false;
if (View._focused === this)
View._focused = null;
View._views.splice(View._views.indexOf(this), 1);
delete View._viewsById[this._id];
if (this._project._view === this)
this._project._view = null;
DomEvent.remove(this._element, this._viewEvents);
DomEvent.remove(window, this._windowEvents);
this._element = this._project = null;
this.off('frame');
this._animate = false;
this._frameItems = {};
return true;
},
_events: Base.each(['onResize', 'onMouseDown', 'onMouseUp', 'onMouseMove'],
function(name) {
this[name] = {
install: function(type) {
this._installEvent(type);
},
uninstall: function(type) {
this._uninstallEvent(type);
}
};
}, {
onFrame: {
install: function() {
this.play();
},
uninstall: function() {
this.pause();
}
}
}
),
_animate: false,
_time: 0,
_count: 0,
_requestFrame: function() {
var that = this;
DomEvent.requestAnimationFrame(function() {
that._requested = false;
if (!that._animate)
return;
that._requestFrame();
that._handleFrame();
}, this._element);
this._requested = true;
},
_handleFrame: function() {
paper = this._scope;
var now = Date.now() / 1000,
delta = this._before ? now - this._before : 0;
this._before = now;
this._handlingFrame = true;
this.emit('frame', new Base({
delta: delta,
time: this._time += delta,
count: this._count++
}));
if (this._stats)
this._stats.update();
this._handlingFrame = false;
this.update();
},
_animateItem: function(item, animate) {
var items = this._frameItems;
if (animate) {
items[item._id] = {
item: item,
time: 0,
count: 0
};
if (++this._frameItemCount === 1)
this.on('frame', this._handleFrameItems);
} else {
delete items[item._id];
if (--this._frameItemCount === 0) {
this.off('frame', this._handleFrameItems);
}
}
},
_handleFrameItems: function(event) {
for (var i in this._frameItems) {
var entry = this._frameItems[i];
entry.item.emit('frame', new Base(event, {
time: entry.time += event.delta,
count: entry.count++
}));
}
},
_update: function() {
this._project._needsUpdate = true;
if (this._handlingFrame)
return;
if (this._animate) {
this._handleFrame();
} else {
this.update();
}
},
_changed: function(flags) {
if (flags & 1)
this._project._needsUpdate = true;
},
_transform: function(matrix) {
this._matrix.concatenate(matrix);
this._bounds = null;
this._update();
},
getElement: function() {
return this._element;
},
getPixelRatio: function() {
return this._pixelRatio;
},
getResolution: function() {
return this._pixelRatio * 72;
},
getViewSize: function() {
var size = this._viewSize;
return new LinkedSize(size.width, size.height, this, 'setViewSize');
},
setViewSize: function() {
var size = Size.read(arguments),
delta = size.subtract(this._viewSize);
if (delta.isZero())
return;
this._viewSize.set(size.width, size.height);
this._setViewSize(size);
this._bounds = null;
this.emit('resize', {
size: size,
delta: delta
});
this._update();
},
_setViewSize: function(size) {
var element = this._element;
element.width = size.width;
element.height = size.height;
},
getBounds: function() {
if (!this._bounds)
this._bounds = this._matrix.inverted()._transformBounds(
new Rectangle(new Point(), this._viewSize));
return this._bounds;
},
getSize: function() {
return this.getBounds().getSize();
},
getCenter: function() {
return this.getBounds().getCenter();
},
setCenter: function() {
var center = Point.read(arguments);
this.scrollBy(center.subtract(this.getCenter()));
},
getZoom: function() {
return this._zoom;
},
setZoom: function(zoom) {
this._transform(new Matrix().scale(zoom / this._zoom,
this.getCenter()));
this._zoom = zoom;
},
isVisible: function() {
return DomElement.isInView(this._element);
},
scrollBy: function() {
this._transform(new Matrix().translate(Point.read(arguments).negate()));
},
play: function() {
this._animate = true;
if (!this._requested)
this._requestFrame();
},
pause: function() {
this._animate = false;
},
draw: function() {
this.update();
},
projectToView: function() {
return this._matrix._transformPoint(Point.read(arguments));
},
viewToProject: function() {
return this._matrix._inverseTransform(Point.read(arguments));
}
}, {
statics: {
_views: [],
_viewsById: {},
_id: 0,
create: function(project, element) {
if (typeof element === 'string')
element = document.getElementById(element);
return new CanvasView(project, element);
}
}
},
new function() {
var tool,
prevFocus,
tempFocus,
dragging = false;
function getView(event) {
var target = DomEvent.getTarget(event);
return target.getAttribute && View._viewsById[target.getAttribute('id')];
}
function viewToProject(view, event) {
return view.viewToProject(DomEvent.getOffset(event, view._element));
}
function updateFocus() {
if (!View._focused || !View._focused.isVisible()) {
for (var i = 0, l = View._views.length; i < l; i++) {
var view = View._views[i];
if (view && view.isVisible()) {
View._focused = tempFocus = view;
break;
}
}
}
}
function handleMouseMove(view, point, event) {
view._handleEvent('mousemove', point, event);
var tool = view._scope.tool;
if (tool) {
tool._handleEvent(dragging && tool.responds('mousedrag')
? 'mousedrag' : 'mousemove', point, event);
}
view.update();
return tool;
}
var navigator = window.navigator,
mousedown, mousemove, mouseup;
if (navigator.pointerEnabled || navigator.msPointerEnabled) {
mousedown = 'pointerdown MSPointerDown';
mousemove = 'pointermove MSPointerMove';
mouseup = 'pointerup pointercancel MSPointerUp MSPointerCancel';
} else {
mousedown = 'touchstart';
mousemove = 'touchmove';
mouseup = 'touchend touchcancel';
if (!('ontouchstart' in window && navigator.userAgent.match(
/mobile|tablet|ip(ad|hone|od)|android|silk/i))) {
mousedown += ' mousedown';
mousemove += ' mousemove';
mouseup += ' mouseup';
}
}
var viewEvents = {
'selectstart dragstart': function(event) {
if (dragging)
event.preventDefault();
}
};
var docEvents = {
mouseout: function(event) {
var view = View._focused,
target = DomEvent.getRelatedTarget(event);
if (view && (!target || target.nodeName === 'HTML'))
handleMouseMove(view, viewToProject(view, event), event);
},
scroll: updateFocus
};
viewEvents[mousedown] = function(event) {
var view = View._focused = getView(event),
point = viewToProject(view, event);
dragging = true;
view._handleEvent('mousedown', point, event);
if (tool = view._scope.tool)
tool._handleEvent('mousedown', point, event);
view.update();
};
docEvents[mousemove] = function(event) {
var view = View._focused;
if (!dragging) {
var target = getView(event);
if (target) {
if (view !== target)
handleMouseMove(view, viewToProject(view, event), event);
prevFocus = view;
view = View._focused = tempFocus = target;
} else if (tempFocus && tempFocus === view) {
view = View._focused = prevFocus;
updateFocus();
}
}
if (view) {
var point = viewToProject(view, event);
if (dragging || view.getBounds().contains(point))
tool = handleMouseMove(view, point, event);
}
};
docEvents[mouseup] = function(event) {
var view = View._focused;
if (!view || !dragging)
return;
var point = viewToProject(view, event);
dragging = false;
view._handleEvent('mouseup', point, event);
if (tool)
tool._handleEvent('mouseup', point, event);
view.update();
};
DomEvent.add(document, docEvents);
DomEvent.add(window, {
load: updateFocus
});
var mouseFlags = {
mousedown: {
mousedown: 1,
mousedrag: 1,
click: 1,
doubleclick: 1
},
mouseup: {
mouseup: 1,
mousedrag: 1,
click: 1,
doubleclick: 1
},
mousemove: {
mousedrag: 1,
mousemove: 1,
mouseenter: 1,
mouseleave: 1
}
};
return {
_viewEvents: viewEvents,
_handleEvent: function() {},
_installEvent: function(type) {
var counters = this._eventCounters;
if (counters) {
for (var key in mouseFlags) {
counters[key] = (counters[key] || 0)
+ (mouseFlags[key][type] || 0);
}
}
},
_uninstallEvent: function(type) {
var counters = this._eventCounters;
if (counters) {
for (var key in mouseFlags)
counters[key] -= mouseFlags[key][type] || 0;
}
},
statics: {
updateFocus: updateFocus
}
};
});
var CanvasView = View.extend({
_class: 'CanvasView',
initialize: function CanvasView(project, canvas) {
if (!(canvas instanceof HTMLCanvasElement)) {
var size = Size.read(arguments, 1);
if (size.isZero())
throw new Error(
'Cannot create CanvasView with the provided argument: '
+ [].slice.call(arguments, 1));
canvas = CanvasProvider.getCanvas(size);
}
this._context = canvas.getContext('2d');
this._eventCounters = {};
this._pixelRatio = 1;
if (!/^off|false$/.test(PaperScope.getAttribute(canvas, 'hidpi'))) {
var deviceRatio = window.devicePixelRatio || 1,
backingStoreRatio = DomElement.getPrefixed(this._context,
'backingStorePixelRatio') || 1;
this._pixelRatio = deviceRatio / backingStoreRatio;
}
View.call(this, project, canvas);
},
_setViewSize: function(size) {
var element = this._element,
pixelRatio = this._pixelRatio,
width = size.width,
height = size.height;
element.width = width * pixelRatio;
element.height = height * pixelRatio;
if (pixelRatio !== 1) {
if (!PaperScope.hasAttribute(element, 'resize')) {
var style = element.style;
style.width = width + 'px';
style.height = height + 'px';
}
this._context.scale(pixelRatio, pixelRatio);
}
},
getPixelSize: function(size) {
var browser = paper.browser,
pixels;
if (browser && browser.firefox) {
var parent = this._element.parentNode,
temp = document.createElement('div');
temp.style.fontSize = size;
parent.appendChild(temp);
pixels = parseFloat(DomElement.getStyles(temp).fontSize);
parent.removeChild(temp);
} else {
var ctx = this._context,
prevFont = ctx.font;
ctx.font = size + ' serif';
pixels = parseFloat(ctx.font);
ctx.font = prevFont;
}
return pixels;
},
getTextWidth: function(font, lines) {
var ctx = this._context,
prevFont = ctx.font,
width = 0;
ctx.font = font;
for (var i = 0, l = lines.length; i < l; i++)
width = Math.max(width, ctx.measureText(lines[i]).width);
ctx.font = prevFont;
return width;
},
update: function(force) {
var project = this._project;
if (!project || !force && !project._needsUpdate)
return false;
var ctx = this._context,
size = this._viewSize;
ctx.clearRect(0, 0, size.width + 1, size.height + 1);
project.draw(ctx, this._matrix, this._pixelRatio);
project._needsUpdate = false;
return true;
}
},
new function() {
var downPoint,
lastPoint,
overPoint,
downItem,
lastItem,
overItem,
dragItem,
dblClick,
clickTime;
function callEvent(view, type, event, point, target, lastPoint) {
var item = target,
mouseEvent;
function call(obj) {
if (obj.responds(type)) {
if (!mouseEvent) {
mouseEvent = new MouseEvent(type, event, point, target,
lastPoint ? point.subtract(lastPoint) : null);
}
if (obj.emit(type, mouseEvent) && mouseEvent.isStopped) {
event.preventDefault();
return true;
}
}
}
while (item) {
if (call(item))
return true;
item = item.getParent();
}
if (call(view))
return true;
return false;
}
return {
_handleEvent: function(type, point, event) {
if (!this._eventCounters[type])
return;
var project = this._project,
hit = project.hitTest(point, {
tolerance: 0,
fill: true,
stroke: true
}),
item = hit && hit.item,
stopped = false;
switch (type) {
case 'mousedown':
stopped = callEvent(this, type, event, point, item);
dblClick = lastItem == item && (Date.now() - clickTime < 300);
downItem = lastItem = item;
downPoint = lastPoint = overPoint = point;
dragItem = !stopped && item;
while (dragItem && !dragItem.responds('mousedrag'))
dragItem = dragItem._parent;
break;
case 'mouseup':
stopped = callEvent(this, type, event, point, item, downPoint);
if (dragItem) {
if (lastPoint && !lastPoint.equals(point))
callEvent(this, 'mousedrag', event, point, dragItem,
lastPoint);
if (item !== dragItem) {
overPoint = point;
callEvent(this, 'mousemove', event, point, item,
overPoint);
}
}
if (!stopped && item && item === downItem) {
clickTime = Date.now();
callEvent(this, dblClick && downItem.responds('doubleclick')
? 'doubleclick' : 'click', event, downPoint, item);
dblClick = false;
}
downItem = dragItem = null;
break;
case 'mousemove':
if (dragItem)
stopped = callEvent(this, 'mousedrag', event, point,
dragItem, lastPoint);
if (!stopped) {
if (item !== overItem)
overPoint = point;
stopped = callEvent(this, type, event, point, item,
overPoint);
}
lastPoint = overPoint = point;
if (item !== overItem) {
callEvent(this, 'mouseleave', event, point, overItem);
overItem = item;
callEvent(this, 'mouseenter', event, point, item);
}
break;
}
return stopped;
}
};
});
var Event = Base.extend({
_class: 'Event',
initialize: function Event(event) {
this.event = event;
},
isPrevented: false,
isStopped: false,
preventDefault: function() {
this.isPrevented = true;
this.event.preventDefault();
},
stopPropagation: function() {
this.isStopped = true;
this.event.stopPropagation();
},
stop: function() {
this.stopPropagation();
this.preventDefault();
},
getModifiers: function() {
return Key.modifiers;
}
});
var KeyEvent = Event.extend({
_class: 'KeyEvent',
initialize: function KeyEvent(down, key, character, event) {
Event.call(this, event);
this.type = down ? 'keydown' : 'keyup';
this.key = key;
this.character = character;
},
toString: function() {
return "{ type: '" + this.type
+ "', key: '" + this.key
+ "', character: '" + this.character
+ "', modifiers: " + this.getModifiers()
+ " }";
}
});
var Key = new function() {
var specialKeys = {
8: 'backspace',
9: 'tab',
13: 'enter',
16: 'shift',
17: 'control',
18: 'option',
19: 'pause',
20: 'caps-lock',
27: 'escape',
32: 'space',
35: 'end',
36: 'home',
37: 'left',
38: 'up',
39: 'right',
40: 'down',
46: 'delete',
91: 'command',
93: 'command',
224: 'command'
},
specialChars = {
9: true,
13: true,
32: true
},
modifiers = new Base({
shift: false,
control: false,
option: false,
command: false,
capsLock: false,
space: false
}),
charCodeMap = {},
keyMap = {},
commandFixMap,
downCode;
function handleKey(down, keyCode, charCode, event) {
var character = charCode ? String.fromCharCode(charCode) : '',
specialKey = specialKeys[keyCode],
key = specialKey || character.toLowerCase(),
type = down ? 'keydown' : 'keyup',
view = View._focused,
scope = view && view.isVisible() && view._scope,
tool = scope && scope.tool,
name;
keyMap[key] = down;
if (down) {
charCodeMap[keyCode] = charCode;
} else {
delete charCodeMap[keyCode];
}
if (specialKey && (name = Base.camelize(specialKey)) in modifiers) {
modifiers[name] = down;
var browser = paper.browser;
if (name === 'command' && browser && browser.mac) {
if (down) {
commandFixMap = {};
} else {
for (var code in commandFixMap) {
if (code in charCodeMap)
handleKey(false, code, commandFixMap[code], event);
}
commandFixMap = null;
}
}
} else if (down && commandFixMap) {
commandFixMap[keyCode] = charCode;
}
if (tool && tool.responds(type)) {
paper = scope;
tool.emit(type, new KeyEvent(down, key, character, event));
if (view)
view.update();
}
}
DomEvent.add(document, {
keydown: function(event) {
var code = event.which || event.keyCode;
if (code in specialKeys || modifiers.command) {
handleKey(true, code,
code in specialChars || modifiers.command ? code : 0,
event);
} else {
downCode = code;
}
},
keypress: function(event) {
if (downCode != null) {
handleKey(true, downCode, event.which || event.keyCode, event);
downCode = null;
}
},
keyup: function(event) {
var code = event.which || event.keyCode;
if (code in charCodeMap)
handleKey(false, code, charCodeMap[code], event);
}
});
DomEvent.add(window, {
blur: function(event) {
for (var code in charCodeMap)
handleKey(false, code, charCodeMap[code], event);
}
});
return {
modifiers: modifiers,
isDown: function(key) {
return !!keyMap[key];
}
};
};
var MouseEvent = Event.extend({
_class: 'MouseEvent',
initialize: function MouseEvent(type, event, point, target, delta) {
Event.call(this, event);
this.type = type;
this.point = point;
this.target = target;
this.delta = delta;
},
toString: function() {
return "{ type: '" + this.type
+ "', point: " + this.point
+ ', target: ' + this.target
+ (this.delta ? ', delta: ' + this.delta : '')
+ ', modifiers: ' + this.getModifiers()
+ ' }';
}
});
var ToolEvent = Event.extend({
_class: 'ToolEvent',
_item: null,
initialize: function ToolEvent(tool, type, event) {
this.tool = tool;
this.type = type;
this.event = event;
},
_choosePoint: function(point, toolPoint) {
return point ? point : toolPoint ? toolPoint.clone() : null;
},
getPoint: function() {
return this._choosePoint(this._point, this.tool._point);
},
setPoint: function(point) {
this._point = point;
},
getLastPoint: function() {
return this._choosePoint(this._lastPoint, this.tool._lastPoint);
},
setLastPoint: function(lastPoint) {
this._lastPoint = lastPoint;
},
getDownPoint: function() {
return this._choosePoint(this._downPoint, this.tool._downPoint);
},
setDownPoint: function(downPoint) {
this._downPoint = downPoint;
},
getMiddlePoint: function() {
if (!this._middlePoint && this.tool._lastPoint) {
return this.tool._point.add(this.tool._lastPoint).divide(2);
}
return this._middlePoint;
},
setMiddlePoint: function(middlePoint) {
this._middlePoint = middlePoint;
},
getDelta: function() {
return !this._delta && this.tool._lastPoint
? this.tool._point.subtract(this.tool._lastPoint)
: this._delta;
},
setDelta: function(delta) {
this._delta = delta;
},
getCount: function() {
return /^mouse(down|up)$/.test(this.type)
? this.tool._downCount
: this.tool._count;
},
setCount: function(count) {
this.tool[/^mouse(down|up)$/.test(this.type) ? 'downCount' : 'count']
= count;
},
getItem: function() {
if (!this._item) {
var result = this.tool._scope.project.hitTest(this.getPoint());
if (result) {
var item = result.item,
parent = item._parent;
while (/^(Group|CompoundPath)$/.test(parent._class)) {
item = parent;
parent = parent._parent;
}
this._item = item;
}
}
return this._item;
},
setItem: function(item) {
this._item = item;
},
toString: function() {
return '{ type: ' + this.type
+ ', point: ' + this.getPoint()
+ ', count: ' + this.getCount()
+ ', modifiers: ' + this.getModifiers()
+ ' }';
}
});
var Tool = PaperScopeItem.extend({
_class: 'Tool',
_list: 'tools',
_reference: 'tool',
_events: [ 'onActivate', 'onDeactivate', 'onEditOptions',
'onMouseDown', 'onMouseUp', 'onMouseDrag', 'onMouseMove',
'onKeyDown', 'onKeyUp' ],
initialize: function Tool(props) {
PaperScopeItem.call(this);
this._firstMove = true;
this._count = 0;
this._downCount = 0;
this._set(props);
},
getMinDistance: function() {
return this._minDistance;
},
setMinDistance: function(minDistance) {
this._minDistance = minDistance;
if (minDistance != null && this._maxDistance != null
&& minDistance > this._maxDistance) {
this._maxDistance = minDistance;
}
},
getMaxDistance: function() {
return this._maxDistance;
},
setMaxDistance: function(maxDistance) {
this._maxDistance = maxDistance;
if (this._minDistance != null && maxDistance != null
&& maxDistance < this._minDistance) {
this._minDistance = maxDistance;
}
},
getFixedDistance: function() {
return this._minDistance == this._maxDistance
? this._minDistance : null;
},
setFixedDistance: function(distance) {
this._minDistance = this._maxDistance = distance;
},
_updateEvent: function(type, point, minDistance, maxDistance, start,
needsChange, matchMaxDistance) {
if (!start) {
if (minDistance != null || maxDistance != null) {
var minDist = minDistance != null ? minDistance : 0,
vector = point.subtract(this._point),
distance = vector.getLength();
if (distance < minDist)
return false;
if (maxDistance != null && maxDistance != 0) {
if (distance > maxDistance) {
point = this._point.add(vector.normalize(maxDistance));
} else if (matchMaxDistance) {
return false;
}
}
}
if (needsChange && point.equals(this._point))
return false;
}
this._lastPoint = start && type == 'mousemove' ? point : this._point;
this._point = point;
switch (type) {
case 'mousedown':
this._lastPoint = this._downPoint;
this._downPoint = this._point;
this._downCount++;
break;
case 'mouseup':
this._lastPoint = this._downPoint;
break;
}
this._count = start ? 0 : this._count + 1;
return true;
},
_fireEvent: function(type, event) {
var sets = paper.project._removeSets;
if (sets) {
if (type === 'mouseup')
sets.mousedrag = null;
var set = sets[type];
if (set) {
for (var id in set) {
var item = set[id];
for (var key in sets) {
var other = sets[key];
if (other && other != set)
delete other[item._id];
}
item.remove();
}
sets[type] = null;
}
}
return this.responds(type)
&& this.emit(type, new ToolEvent(this, type, event));
},
_handleEvent: function(type, point, event) {
paper = this._scope;
var called = false;
switch (type) {
case 'mousedown':
this._updateEvent(type, point, null, null, true, false, false);
called = this._fireEvent(type, event);
break;
case 'mousedrag':
var needsChange = false,
matchMaxDistance = false;
while (this._updateEvent(type, point, this.minDistance,
this.maxDistance, false, needsChange, matchMaxDistance)) {
called = this._fireEvent(type, event) || called;
needsChange = true;
matchMaxDistance = true;
}
break;
case 'mouseup':
if (!point.equals(this._point)
&& this._updateEvent('mousedrag', point, this.minDistance,
this.maxDistance, false, false, false)) {
called = this._fireEvent('mousedrag', event);
}
this._updateEvent(type, point, null, this.maxDistance, false,
false, false);
called = this._fireEvent(type, event) || called;
this._updateEvent(type, point, null, null, true, false, false);
this._firstMove = true;
break;
case 'mousemove':
while (this._updateEvent(type, point, this.minDistance,
this.maxDistance, this._firstMove, true, false)) {
called = this._fireEvent(type, event) || called;
this._firstMove = false;
}
break;
}
if (called)
event.preventDefault();
return called;
}
});
var Http = {
request: function(method, url, callback, async) {
async = (async === undefined) ? true : async;
var xhr = new (window.ActiveXObject || XMLHttpRequest)(
'Microsoft.XMLHTTP');
xhr.open(method.toUpperCase(), url, async);
if ('overrideMimeType' in xhr)
xhr.overrideMimeType('text/plain');
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
var status = xhr.status;
if (status === 0 || status === 200) {
callback.call(xhr, xhr.responseText);
} else {
throw new Error('Could not load ' + url + ' (Error '
+ status + ')');
}
}
};
return xhr.send(null);
}
};
var CanvasProvider = {
canvases: [],
getCanvas: function(width, height) {
var canvas,
clear = true;
if (typeof width === 'object') {
height = width.height;
width = width.width;
}
if (this.canvases.length) {
canvas = this.canvases.pop();
} else {
canvas = document.createElement('canvas');
}
var ctx = canvas.getContext('2d');
if (canvas.width === width && canvas.height === height) {
if (clear)
ctx.clearRect(0, 0, width + 1, height + 1);
} else {
canvas.width = width;
canvas.height = height;
}
ctx.save();
return canvas;
},
getContext: function(width, height) {
return this.getCanvas(width, height).getContext('2d');
},
release: function(obj) {
var canvas = obj.canvas ? obj.canvas : obj;
canvas.getContext('2d').restore();
this.canvases.push(canvas);
}
};
var BlendMode = new function() {
var min = Math.min,
max = Math.max,
abs = Math.abs,
sr, sg, sb, sa,
br, bg, bb, ba,
dr, dg, db;
function getLum(r, g, b) {
return 0.2989 * r + 0.587 * g + 0.114 * b;
}
function setLum(r, g, b, l) {
var d = l - getLum(r, g, b);
dr = r + d;
dg = g + d;
db = b + d;
var l = getLum(dr, dg, db),
mn = min(dr, dg, db),
mx = max(dr, dg, db);
if (mn < 0) {
var lmn = l - mn;
dr = l + (dr - l) * l / lmn;
dg = l + (dg - l) * l / lmn;
db = l + (db - l) * l / lmn;
}
if (mx > 255) {
var ln = 255 - l,
mxl = mx - l;
dr = l + (dr - l) * ln / mxl;
dg = l + (dg - l) * ln / mxl;
db = l + (db - l) * ln / mxl;
}
}
function getSat(r, g, b) {
return max(r, g, b) - min(r, g, b);
}
function setSat(r, g, b, s) {
var col = [r, g, b],
mx = max(r, g, b),
mn = min(r, g, b),
md;
mn = mn === r ? 0 : mn === g ? 1 : 2;
mx = mx === r ? 0 : mx === g ? 1 : 2;
md = min(mn, mx) === 0 ? max(mn, mx) === 1 ? 2 : 1 : 0;
if (col[mx] > col[mn]) {
col[md] = (col[md] - col[mn]) * s / (col[mx] - col[mn]);
col[mx] = s;
} else {
col[md] = col[mx] = 0;
}
col[mn] = 0;
dr = col[0];
dg = col[1];
db = col[2];
}
var modes = {
multiply: function() {
dr = br * sr / 255;
dg = bg * sg / 255;
db = bb * sb / 255;
},
screen: function() {
dr = br + sr - (br * sr / 255);
dg = bg + sg - (bg * sg / 255);
db = bb + sb - (bb * sb / 255);
},
overlay: function() {
dr = br < 128 ? 2 * br * sr / 255 : 255 - 2 * (255 - br) * (255 - sr) / 255;
dg = bg < 128 ? 2 * bg * sg / 255 : 255 - 2 * (255 - bg) * (255 - sg) / 255;
db = bb < 128 ? 2 * bb * sb / 255 : 255 - 2 * (255 - bb) * (255 - sb) / 255;
},
'soft-light': function() {
var t = sr * br / 255;
dr = t + br * (255 - (255 - br) * (255 - sr) / 255 - t) / 255;
t = sg * bg / 255;
dg = t + bg * (255 - (255 - bg) * (255 - sg) / 255 - t) / 255;
t = sb * bb / 255;
db = t + bb * (255 - (255 - bb) * (255 - sb) / 255 - t) / 255;
},
'hard-light': function() {
dr = sr < 128 ? 2 * sr * br / 255 : 255 - 2 * (255 - sr) * (255 - br) / 255;
dg = sg < 128 ? 2 * sg * bg / 255 : 255 - 2 * (255 - sg) * (255 - bg) / 255;
db = sb < 128 ? 2 * sb * bb / 255 : 255 - 2 * (255 - sb) * (255 - bb) / 255;
},
'color-dodge': function() {
dr = br === 0 ? 0 : sr === 255 ? 255 : min(255, 255 * br / (255 - sr));
dg = bg === 0 ? 0 : sg === 255 ? 255 : min(255, 255 * bg / (255 - sg));
db = bb === 0 ? 0 : sb === 255 ? 255 : min(255, 255 * bb / (255 - sb));
},
'color-burn': function() {
dr = br === 255 ? 255 : sr === 0 ? 0 : max(0, 255 - (255 - br) * 255 / sr);
dg = bg === 255 ? 255 : sg === 0 ? 0 : max(0, 255 - (255 - bg) * 255 / sg);
db = bb === 255 ? 255 : sb === 0 ? 0 : max(0, 255 - (255 - bb) * 255 / sb);
},
darken: function() {
dr = br < sr ? br : sr;
dg = bg < sg ? bg : sg;
db = bb < sb ? bb : sb;
},
lighten: function() {
dr = br > sr ? br : sr;
dg = bg > sg ? bg : sg;
db = bb > sb ? bb : sb;
},
difference: function() {
dr = br - sr;
if (dr < 0)
dr = -dr;
dg = bg - sg;
if (dg < 0)
dg = -dg;
db = bb - sb;
if (db < 0)
db = -db;
},
exclusion: function() {
dr = br + sr * (255 - br - br) / 255;
dg = bg + sg * (255 - bg - bg) / 255;
db = bb + sb * (255 - bb - bb) / 255;
},
hue: function() {
setSat(sr, sg, sb, getSat(br, bg, bb));
setLum(dr, dg, db, getLum(br, bg, bb));
},
saturation: function() {
setSat(br, bg, bb, getSat(sr, sg, sb));
setLum(dr, dg, db, getLum(br, bg, bb));
},
luminosity: function() {
setLum(br, bg, bb, getLum(sr, sg, sb));
},
color: function() {
setLum(sr, sg, sb, getLum(br, bg, bb));
},
add: function() {
dr = min(br + sr, 255);
dg = min(bg + sg, 255);
db = min(bb + sb, 255);
},
subtract: function() {
dr = max(br - sr, 0);
dg = max(bg - sg, 0);
db = max(bb - sb, 0);
},
average: function() {
dr = (br + sr) / 2;
dg = (bg + sg) / 2;
db = (bb + sb) / 2;
},
negation: function() {
dr = 255 - abs(255 - sr - br);
dg = 255 - abs(255 - sg - bg);
db = 255 - abs(255 - sb - bb);
}
};
var nativeModes = this.nativeModes = Base.each([
'source-over', 'source-in', 'source-out', 'source-atop',
'destination-over', 'destination-in', 'destination-out',
'destination-atop', 'lighter', 'darker', 'copy', 'xor'
], function(mode) {
this[mode] = true;
}, {});
var ctx = CanvasProvider.getContext(1, 1);
Base.each(modes, function(func, mode) {
var darken = mode === 'darken',
ok = false;
ctx.save();
try {
ctx.fillStyle = darken ? '#300' : '#a00';
ctx.fillRect(0, 0, 1, 1);
ctx.globalCompositeOperation = mode;
if (ctx.globalCompositeOperation === mode) {
ctx.fillStyle = darken ? '#a00' : '#300';
ctx.fillRect(0, 0, 1, 1);
ok = ctx.getImageData(0, 0, 1, 1).data[0] !== darken ? 170 : 51;
}
} catch (e) {}
ctx.restore();
nativeModes[mode] = ok;
});
CanvasProvider.release(ctx);
this.process = function(mode, srcContext, dstContext, alpha, offset) {
var srcCanvas = srcContext.canvas,
normal = mode === 'normal';
if (normal || nativeModes[mode]) {
dstContext.save();
dstContext.setTransform(1, 0, 0, 1, 0, 0);
dstContext.globalAlpha = alpha;
if (!normal)
dstContext.globalCompositeOperation = mode;
dstContext.drawImage(srcCanvas, offset.x, offset.y);
dstContext.restore();
} else {
var process = modes[mode];
if (!process)
return;
var dstData = dstContext.getImageData(offset.x, offset.y,
srcCanvas.width, srcCanvas.height),
dst = dstData.data,
src = srcContext.getImageData(0, 0,
srcCanvas.width, srcCanvas.height).data;
for (var i = 0, l = dst.length; i < l; i += 4) {
sr = src[i];
br = dst[i];
sg = src[i + 1];
bg = dst[i + 1];
sb = src[i + 2];
bb = dst[i + 2];
sa = src[i + 3];
ba = dst[i + 3];
process();
var a1 = sa * alpha / 255,
a2 = 1 - a1;
dst[i] = a1 * dr + a2 * br;
dst[i + 1] = a1 * dg + a2 * bg;
dst[i + 2] = a1 * db + a2 * bb;
dst[i + 3] = sa * alpha + a2 * ba;
}
dstContext.putImageData(dstData, offset.x, offset.y);
}
};
};
var SVGStyles = Base.each({
fillColor: ['fill', 'color'],
strokeColor: ['stroke', 'color'],
strokeWidth: ['stroke-width', 'number'],
strokeCap: ['stroke-linecap', 'string'],
strokeJoin: ['stroke-linejoin', 'string'],
strokeScaling: ['vector-effect', 'lookup', {
true: 'none',
false: 'non-scaling-stroke'
}, function(item, value) {
return !value
&& (item instanceof PathItem
|| item instanceof Shape
|| item instanceof TextItem);
}],
miterLimit: ['stroke-miterlimit', 'number'],
dashArray: ['stroke-dasharray', 'array'],
dashOffset: ['stroke-dashoffset', 'number'],
fontFamily: ['font-family', 'string'],
fontWeight: ['font-weight', 'string'],
fontSize: ['font-size', 'number'],
justification: ['text-anchor', 'lookup', {
left: 'start',
center: 'middle',
right: 'end'
}],
opacity: ['opacity', 'number'],
blendMode: ['mix-blend-mode', 'string']
}, function(entry, key) {
var part = Base.capitalize(key),
lookup = entry[2];
this[key] = {
type: entry[1],
property: key,
attribute: entry[0],
toSVG: lookup,
fromSVG: lookup && Base.each(lookup, function(value, name) {
this[value] = name;
}, {}),
exportFilter: entry[3],
get: 'get' + part,
set: 'set' + part
};
}, {});
var SVGNamespaces = {
href: 'http://www.w3.org/1999/xlink',
xlink: 'http://www.w3.org/2000/xmlns'
};
new function() {
var formatter;
function setAttributes(node, attrs) {
for (var key in attrs) {
var val = attrs[key],
namespace = SVGNamespaces[key];
if (typeof val === 'number')
val = formatter.number(val);
if (namespace) {
node.setAttributeNS(namespace, key, val);
} else {
node.setAttribute(key, val);
}
}
return node;
}
function createElement(tag, attrs) {
return setAttributes(
document.createElementNS('http://www.w3.org/2000/svg', tag), attrs);
}
function getTransform(matrix, coordinates, center) {
var attrs = new Base(),
trans = matrix.getTranslation();
if (coordinates) {
matrix = matrix.shiftless();
var point = matrix._inverseTransform(trans);
attrs[center ? 'cx' : 'x'] = point.x;
attrs[center ? 'cy' : 'y'] = point.y;
trans = null;
}
if (!matrix.isIdentity()) {
var decomposed = matrix.decompose();
if (decomposed && !decomposed.shearing) {
var parts = [],
angle = decomposed.rotation,
scale = decomposed.scaling;
if (trans && !trans.isZero())
parts.push('translate(' + formatter.point(trans) + ')');
if (!Numerical.isZero(scale.x - 1)
|| !Numerical.isZero(scale.y - 1))
parts.push('scale(' + formatter.point(scale) +')');
if (angle)
parts.push('rotate(' + formatter.number(angle) + ')');
attrs.transform = parts.join(' ');
} else {
attrs.transform = 'matrix(' + matrix.getValues().join(',') + ')';
}
}
return attrs;
}
function exportGroup(item, options) {
var attrs = getTransform(item._matrix),
children = item._children;
var node = createElement('g', attrs);
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i];
var childNode = exportSVG(child, options);
if (childNode) {
if (child.isClipMask()) {
var clip = createElement('clipPath');
clip.appendChild(childNode);
setDefinition(child, clip, 'clip');
setAttributes(node, {
'clip-path': 'url(#' + clip.id + ')'
});
} else {
node.appendChild(childNode);
}
}
}
return node;
}
function exportRaster(item, options) {
var attrs = getTransform(item._matrix, true),
size = item.getSize(),
image = item.getImage();
attrs.x -= size.width / 2;
attrs.y -= size.height / 2;
attrs.width = size.width;
attrs.height = size.height;
attrs.href = options.embedImages === false && image && image.src
|| item.toDataURL();
return createElement('image', attrs);
}
function exportPath(item, options) {
var matchShapes = options.matchShapes;
if (matchShapes) {
var shape = item.toShape(false);
if (shape)
return exportShape(shape, options);
}
var segments = item._segments,
type,
attrs = getTransform(item._matrix);
if (segments.length === 0)
return null;
if (matchShapes && !item.hasHandles()) {
if (segments.length >= 3) {
type = item._closed ? 'polygon' : 'polyline';
var parts = [];
for(var i = 0, l = segments.length; i < l; i++)
parts.push(formatter.point(segments[i]._point));
attrs.points = parts.join(' ');
} else {
type = 'line';
var first = segments[0]._point,
last = segments[segments.length - 1]._point;
attrs.set({
x1: first.x,
y1: first.y,
x2: last.x,
y2: last.y
});
}
} else {
type = 'path';
attrs.d = item.getPathData(null, options.precision);
}
return createElement(type, attrs);
}
function exportShape(item) {
var type = item._type,
radius = item._radius,
attrs = getTransform(item._matrix, true, type !== 'rectangle');
if (type === 'rectangle') {
type = 'rect';
var size = item._size,
width = size.width,
height = size.height;
attrs.x -= width / 2;
attrs.y -= height / 2;
attrs.width = width;
attrs.height = height;
if (radius.isZero())
radius = null;
}
if (radius) {
if (type === 'circle') {
attrs.r = radius;
} else {
attrs.rx = radius.width;
attrs.ry = radius.height;
}
}
return createElement(type, attrs);
}
function exportCompoundPath(item, options) {
var attrs = getTransform(item._matrix);
var data = item.getPathData(null, options.precision);
if (data)
attrs.d = data;
return createElement('path', attrs);
}
function exportPlacedSymbol(item, options) {
var attrs = getTransform(item._matrix, true),
symbol = item.getSymbol(),
symbolNode = getDefinition(symbol, 'symbol'),
definition = symbol.getDefinition(),
bounds = definition.getBounds();
if (!symbolNode) {
symbolNode = createElement('symbol', {
viewBox: formatter.rectangle(bounds)
});
symbolNode.appendChild(exportSVG(definition, options));
setDefinition(symbol, symbolNode, 'symbol');
}
attrs.href = '#' + symbolNode.id;
attrs.x += bounds.x;
attrs.y += bounds.y;
attrs.width = formatter.number(bounds.width);
attrs.height = formatter.number(bounds.height);
attrs.overflow = 'visible';
return createElement('use', attrs);
}
function exportGradient(color) {
var gradientNode = getDefinition(color, 'color');
if (!gradientNode) {
var gradient = color.getGradient(),
radial = gradient._radial,
origin = color.getOrigin().transform(),
destination = color.getDestination().transform(),
attrs;
if (radial) {
attrs = {
cx: origin.x,
cy: origin.y,
r: origin.getDistance(destination)
};
var highlight = color.getHighlight();
if (highlight) {
highlight = highlight.transform();
attrs.fx = highlight.x;
attrs.fy = highlight.y;
}
} else {
attrs = {
x1: origin.x,
y1: origin.y,
x2: destination.x,
y2: destination.y
};
}
attrs.gradientUnits = 'userSpaceOnUse';
gradientNode = createElement(
(radial ? 'radial' : 'linear') + 'Gradient', attrs);
var stops = gradient._stops;
for (var i = 0, l = stops.length; i < l; i++) {
var stop = stops[i],
stopColor = stop._color,
alpha = stopColor.getAlpha();
attrs = {
offset: stop._rampPoint,
'stop-color': stopColor.toCSS(true)
};
if (alpha < 1)
attrs['stop-opacity'] = alpha;
gradientNode.appendChild(createElement('stop', attrs));
}
setDefinition(color, gradientNode, 'color');
}
return 'url(#' + gradientNode.id + ')';
}
function exportText(item) {
var node = createElement('text', getTransform(item._matrix, true));
node.textContent = item._content;
return node;
}
var exporters = {
Group: exportGroup,
Layer: exportGroup,
Raster: exportRaster,
Path: exportPath,
Shape: exportShape,
CompoundPath: exportCompoundPath,
PlacedSymbol: exportPlacedSymbol,
PointText: exportText
};
function applyStyle(item, node, isRoot) {
var attrs = {},
parent = !isRoot && item.getParent();
if (item._name != null)
attrs.id = item._name;
Base.each(SVGStyles, function(entry) {
var get = entry.get,
type = entry.type,
value = item[get]();
if (entry.exportFilter
? entry.exportFilter(item, value)
: !parent || !Base.equals(parent[get](), value)) {
if (type === 'color' && value != null) {
var alpha = value.getAlpha();
if (alpha < 1)
attrs[entry.attribute + '-opacity'] = alpha;
}
attrs[entry.attribute] = value == null
? 'none'
: type === 'number'
? formatter.number(value)
: type === 'color'
? value.gradient
? exportGradient(value, item)
: value.toCSS(true)
: type === 'array'
? value.join(',')
: type === 'lookup'
? entry.toSVG[value]
: value;
}
});
if (attrs.opacity === 1)
delete attrs.opacity;
if (!item._visible)
attrs.visibility = 'hidden';
return setAttributes(node, attrs);
}
var definitions;
function getDefinition(item, type) {
if (!definitions)
definitions = { ids: {}, svgs: {} };
return item && definitions.svgs[type + '-' + item._id];
}
function setDefinition(item, node, type) {
if (!definitions)
getDefinition();
var id = definitions.ids[type] = (definitions.ids[type] || 0) + 1;
node.id = type + '-' + id;
definitions.svgs[type + '-' + item._id] = node;
}
function exportDefinitions(node, options) {
var svg = node,
defs = null;
if (definitions) {
svg = node.nodeName.toLowerCase() === 'svg' && node;
for (var i in definitions.svgs) {
if (!defs) {
if (!svg) {
svg = createElement('svg');
svg.appendChild(node);
}
defs = svg.insertBefore(createElement('defs'),
svg.firstChild);
}
defs.appendChild(definitions.svgs[i]);
}
definitions = null;
}
return options.asString
? new XMLSerializer().serializeToString(svg)
: svg;
}
function exportSVG(item, options, isRoot) {
var exporter = exporters[item._class],
node = exporter && exporter(item, options);
if (node) {
var onExport = options.onExport;
if (onExport)
node = onExport(item, node, options) || node;
var data = JSON.stringify(item._data);
if (data && data !== '{}' && data !== 'null')
node.setAttribute('data-paper-data', data);
}
return node && applyStyle(item, node, isRoot);
}
function setOptions(options) {
if (!options)
options = {};
formatter = new Formatter(options.precision);
return options;
}
Item.inject({
exportSVG: function(options) {
options = setOptions(options);
return exportDefinitions(exportSVG(this, options, true), options);
}
});
Project.inject({
exportSVG: function(options) {
options = setOptions(options);
var layers = this.layers,
view = this.getView(),
size = view.getViewSize(),
node = createElement('svg', {
x: 0,
y: 0,
width: size.width,
height: size.height,
version: '1.1',
xmlns: 'http://www.w3.org/2000/svg',
'xmlns:xlink': 'http://www.w3.org/1999/xlink'
}),
parent = node,
matrix = view._matrix;
if (!matrix.isIdentity())
parent = node.appendChild(
createElement('g', getTransform(matrix)));
for (var i = 0, l = layers.length; i < l; i++)
parent.appendChild(exportSVG(layers[i], options, true));
return exportDefinitions(node, options);
}
});
};
new function() {
function getValue(node, name, isString, allowNull) {
var namespace = SVGNamespaces[name],
value = namespace
? node.getAttributeNS(namespace, name)
: node.getAttribute(name);
if (value === 'null')
value = null;
return value == null
? allowNull
? null
: isString
? ''
: 0
: isString
? value
: parseFloat(value);
}
function getPoint(node, x, y, allowNull) {
x = getValue(node, x, false, allowNull);
y = getValue(node, y, false, allowNull);
return allowNull && (x == null || y == null) ? null
: new Point(x, y);
}
function getSize(node, w, h, allowNull) {
w = getValue(node, w, false, allowNull);
h = getValue(node, h, false, allowNull);
return allowNull && (w == null || h == null) ? null
: new Size(w, h);
}
function convertValue(value, type, lookup) {
return value === 'none'
? null
: type === 'number'
? parseFloat(value)
: type === 'array'
? value ? value.split(/[\s,]+/g).map(parseFloat) : []
: type === 'color'
? getDefinition(value) || value
: type === 'lookup'
? lookup[value]
: value;
}
function importGroup(node, type, options, isRoot) {
var nodes = node.childNodes,
isClip = type === 'clippath',
item = new Group(),
project = item._project,
currentStyle = project._currentStyle,
children = [];
if (!isClip) {
item = applyAttributes(item, node, isRoot);
project._currentStyle = item._style.clone();
}
if (isRoot) {
var defs = node.querySelectorAll('defs');
for (var i = 0, l = defs.length; i < l; i++) {
importSVG(defs[i], options, false);
}
}
for (var i = 0, l = nodes.length; i < l; i++) {
var childNode = nodes[i],
child;
if (childNode.nodeType === 1
&& childNode.nodeName.toLowerCase() !== 'defs'
&& (child = importSVG(childNode, options, false))
&& !(child instanceof Symbol))
children.push(child);
}
item.addChildren(children);
if (isClip)
item = applyAttributes(item.reduce(), node, isRoot);
project._currentStyle = currentStyle;
if (isClip || type === 'defs') {
item.remove();
item = null;
}
return item;
}
function importPoly(node, type) {
var coords = node.getAttribute('points').match(
/[+-]?(?:\d*\.\d+|\d+\.?)(?:[eE][+-]?\d+)?/g),
points = [];
for (var i = 0, l = coords.length; i < l; i += 2)
points.push(new Point(
parseFloat(coords[i]),
parseFloat(coords[i + 1])));
var path = new Path(points);
if (type === 'polygon')
path.closePath();
return path;
}
function importPath(node) {
var data = node.getAttribute('d'),
param = { pathData: data };
return (data.match(/m/gi) || []).length > 1 || /z\S+/i.test(data)
? new CompoundPath(param)
: new Path(param);
}
function importGradient(node, type) {
var id = (getValue(node, 'href', true) || '').substring(1),
isRadial = type === 'radialgradient',
gradient;
if (id) {
gradient = definitions[id].getGradient();
} else {
var nodes = node.childNodes,
stops = [];
for (var i = 0, l = nodes.length; i < l; i++) {
var child = nodes[i];
if (child.nodeType === 1)
stops.push(applyAttributes(new GradientStop(), child));
}
gradient = new Gradient(stops, isRadial);
}
var origin, destination, highlight;
if (isRadial) {
origin = getPoint(node, 'cx', 'cy');
destination = origin.add(getValue(node, 'r'), 0);
highlight = getPoint(node, 'fx', 'fy', true);
} else {
origin = getPoint(node, 'x1', 'y1');
destination = getPoint(node, 'x2', 'y2');
}
applyAttributes(
new Color(gradient, origin, destination, highlight), node);
return null;
}
var importers = {
'#document': function (node, type, options, isRoot) {
var nodes = node.childNodes;
for (var i = 0, l = nodes.length; i < l; i++) {
var child = nodes[i];
if (child.nodeType === 1) {
var next = child.nextSibling;
document.body.appendChild(child);
var item = importSVG(child, options, isRoot);
if (next) {
node.insertBefore(child, next);
} else {
node.appendChild(child);
}
return item;
}
}
},
g: importGroup,
svg: importGroup,
clippath: importGroup,
polygon: importPoly,
polyline: importPoly,
path: importPath,
lineargradient: importGradient,
radialgradient: importGradient,
image: function (node) {
var raster = new Raster(getValue(node, 'href', true));
raster.on('load', function() {
var size = getSize(node, 'width', 'height');
this.setSize(size);
var center = this._matrix._transformPoint(
getPoint(node, 'x', 'y').add(size.divide(2)));
this.translate(center);
});
return raster;
},
symbol: function(node, type, options, isRoot) {
return new Symbol(importGroup(node, type, options, isRoot), true);
},
defs: importGroup,
use: function(node) {
var id = (getValue(node, 'href', true) || '').substring(1),
definition = definitions[id],
point = getPoint(node, 'x', 'y');
return definition
? definition instanceof Symbol
? definition.place(point)
: definition.clone().translate(point)
: null;
},
circle: function(node) {
return new Shape.Circle(getPoint(node, 'cx', 'cy'),
getValue(node, 'r'));
},
ellipse: function(node) {
return new Shape.Ellipse({
center: getPoint(node, 'cx', 'cy'),
radius: getSize(node, 'rx', 'ry')
});
},
rect: function(node) {
var point = getPoint(node, 'x', 'y'),
size = getSize(node, 'width', 'height'),
radius = getSize(node, 'rx', 'ry');
return new Shape.Rectangle(new Rectangle(point, size), radius);
},
line: function(node) {
return new Path.Line(getPoint(node, 'x1', 'y1'),
getPoint(node, 'x2', 'y2'));
},
text: function(node) {
var text = new PointText(getPoint(node, 'x', 'y')
.add(getPoint(node, 'dx', 'dy')));
text.setContent(node.textContent.trim() || '');
return text;
}
};
function applyTransform(item, value, name, node) {
var transforms = (node.getAttribute(name) || '').split(/\)\s*/g),
matrix = new Matrix();
for (var i = 0, l = transforms.length; i < l; i++) {
var transform = transforms[i];
if (!transform)
break;
var parts = transform.split(/\(\s*/),
command = parts[0],
v = parts[1].split(/[\s,]+/g);
for (var j = 0, m = v.length; j < m; j++)
v[j] = parseFloat(v[j]);
switch (command) {
case 'matrix':
matrix.concatenate(
new Matrix(v[0], v[1], v[2], v[3], v[4], v[5]));
break;
case 'rotate':
matrix.rotate(v[0], v[1], v[2]);
break;
case 'translate':
matrix.translate(v[0], v[1]);
break;
case 'scale':
matrix.scale(v);
break;
case 'skewX':
matrix.skew(v[0], 0);
break;
case 'skewY':
matrix.skew(0, v[0]);
break;
}
}
item.transform(matrix);
}
function applyOpacity(item, value, name) {
var color = item[name === 'fill-opacity' ? 'getFillColor'
: 'getStrokeColor']();
if (color)
color.setAlpha(parseFloat(value));
}
var attributes = Base.set(Base.each(SVGStyles, function(entry) {
this[entry.attribute] = function(item, value) {
item[entry.set](convertValue(value, entry.type, entry.fromSVG));
if (entry.type === 'color' && item instanceof Shape) {
var color = item[entry.get]();
if (color)
color.transform(new Matrix().translate(
item.getPosition(true).negate()));
}
};
}, {}), {
id: function(item, value) {
definitions[value] = item;
if (item.setName)
item.setName(value);
},
'clip-path': function(item, value) {
var clip = getDefinition(value);
if (clip) {
clip = clip.clone();
clip.setClipMask(true);
if (item instanceof Group) {
item.insertChild(0, clip);
} else {
return new Group(clip, item);
}
}
},
gradientTransform: applyTransform,
transform: applyTransform,
'fill-opacity': applyOpacity,
'stroke-opacity': applyOpacity,
visibility: function(item, value) {
item.setVisible(value === 'visible');
},
display: function(item, value) {
item.setVisible(value !== null);
},
'stop-color': function(item, value) {
if (item.setColor)
item.setColor(value);
},
'stop-opacity': function(item, value) {
if (item._color)
item._color.setAlpha(parseFloat(value));
},
offset: function(item, value) {
var percentage = value.match(/(.*)%$/);
item.setRampPoint(percentage
? percentage[1] / 100
: parseFloat(value));
},
viewBox: function(item, value, name, node, styles) {
var rect = new Rectangle(convertValue(value, 'array')),
size = getSize(node, 'width', 'height', true);
if (item instanceof Group) {
var scale = size ? rect.getSize().divide(size) : 1,
matrix = new Matrix().translate(rect.getPoint()).scale(scale);
item.transform(matrix.inverted());
} else if (item instanceof Symbol) {
if (size)
rect.setSize(size);
var clip = getAttribute(node, 'overflow', styles) != 'visible',
group = item._definition;
if (clip && !rect.contains(group.getBounds())) {
clip = new Shape.Rectangle(rect).transform(group._matrix);
clip.setClipMask(true);
group.addChild(clip);
}
}
}
});
function getAttribute(node, name, styles) {
var attr = node.attributes[name],
value = attr && attr.value;
if (!value) {
var style = Base.camelize(name);
value = node.style[style];
if (!value && styles.node[style] !== styles.parent[style])
value = styles.node[style];
}
return !value
? undefined
: value === 'none'
? null
: value;
}
function applyAttributes(item, node, isRoot) {
var styles = {
node: DomElement.getStyles(node) || {},
parent: !isRoot && DomElement.getStyles(node.parentNode) || {}
};
Base.each(attributes, function(apply, name) {
var value = getAttribute(node, name, styles);
if (value !== undefined)
item = Base.pick(apply(item, value, name, node, styles), item);
});
return item;
}
var definitions = {};
function getDefinition(value) {
var match = value && value.match(/\((?:#|)([^)']+)/);
return match && definitions[match[1]];
}
function importSVG(source, options, isRoot) {
if (!source)
return null;
if (!options) {
options = {};
} else if (typeof options === 'function') {
options = { onLoad: options };
}
var node = source,
scope = paper;
function onLoadCallback(svg) {
paper = scope;
var item = importSVG(svg, options, isRoot),
onLoad = options.onLoad,
view = scope.project && scope.getView();
if (onLoad)
onLoad.call(this, item);
view.update();
}
if (isRoot) {
if (typeof source === 'string' && !/^.*</.test(source)) {
node = document.getElementById(source);
if (node) {
source = null;
} else {
return Http.request('get', source, onLoadCallback);
}
} else if (typeof File !== 'undefined' && source instanceof File) {
var reader = new FileReader();
reader.onload = function() {
onLoadCallback(reader.result);
};
return reader.readAsText(source);
}
}
if (typeof source === 'string')
node = new DOMParser().parseFromString(source, 'image/svg+xml');
if (!node.nodeName)
throw new Error('Unsupported SVG source: ' + source);
var type = node.nodeName.toLowerCase(),
importer = importers[type],
item,
data = node.getAttribute && node.getAttribute('data-paper-data'),
settings = scope.settings,
applyMatrix = settings.applyMatrix;
settings.applyMatrix = false;
item = importer && importer(node, type, options, isRoot) || null;
settings.applyMatrix = applyMatrix;
if (item) {
if (type !== '#document' && !(item instanceof Group))
item = applyAttributes(item, node, isRoot);
var onImport = options.onImport;
if (onImport)
item = onImport(node, item, options) || item;
if (options.expandShapes && item instanceof Shape) {
item.remove();
item = item.toPath();
}
if (data)
item._data = JSON.parse(data);
}
if (isRoot) {
definitions = {};
if (item && Base.pick(options.applyMatrix, applyMatrix))
item.matrix.apply(true, true);
}
return item;
}
Item.inject({
importSVG: function(node, options) {
return this.addChild(importSVG(node, options, true));
}
});
Project.inject({
importSVG: function(node, options) {
this.activate();
return importSVG(node, options, true);
}
});
};
Base.exports.PaperScript = (function() {
var exports, define,
scope = this;
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r(e);return new Function("str",t)}function a(){this.line=Ar,this.column=br-Sr}function o(){Ar=1,br=Sr=0,Er=!0,u()}function i(e,r){gr=br,fr.locations&&(kr=new a),wr=e,u(),Cr=r,Er=e.beforeExpr}function s(){var e=fr.onComment&&fr.locations&&new a,r=br,n=dr.indexOf("*/",br+=2);if(-1===n&&t(br-2,"Unterminated comment"),br=n+2,fr.locations){Kt.lastIndex=r;for(var o;(o=Kt.exec(dr))&&o.index<br;)++Ar,Sr=o.index+o[0].length}fr.onComment&&fr.onComment(!0,dr.slice(r+2,n),r,br,e,fr.locations&&new a)}function c(){for(var e=br,r=fr.onComment&&fr.locations&&new a,t=dr.charCodeAt(br+=2);pr>br&&10!==t&&13!==t&&8232!==t&&8233!==t;)++br,t=dr.charCodeAt(br);fr.onComment&&fr.onComment(!1,dr.slice(e+2,br),e,br,r,fr.locations&&new a)}function u(){for(;pr>br;){var e=dr.charCodeAt(br);if(32===e)++br;else if(13===e){++br;var r=dr.charCodeAt(br);10===r&&++br,fr.locations&&(++Ar,Sr=br)}else if(10===e||8232===e||8233===e)++br,fr.locations&&(++Ar,Sr=br);else if(e>8&&14>e)++br;else if(47===e){var r=dr.charCodeAt(br+1);if(42===r)s();else{if(47!==r)break;c()}}else if(160===e)++br;else{if(!(e>=5760&&Jt.test(String.fromCharCode(e))))break;++br}}}function l(){var e=dr.charCodeAt(br+1);return e>=48&&57>=e?E(!0):(++br,i(xt))}function f(){var e=dr.charCodeAt(br+1);return Er?(++br,k()):61===e?x(Et,2):x(wt,1)}function d(){var e=dr.charCodeAt(br+1);return 61===e?x(Et,2):x(Dt,1)}function p(e){var r=dr.charCodeAt(br+1);return r===e?x(124===e?Lt:Ut,2):61===r?x(Et,2):x(124===e?Rt:Tt,1)}function h(){var e=dr.charCodeAt(br+1);return 61===e?x(Et,2):x(Vt,1)}function m(e){var r=dr.charCodeAt(br+1);return r===e?45==r&&62==dr.charCodeAt(br+2)&&Gt.test(dr.slice(Lr,br))?(br+=3,c(),u(),g()):x(St,2):61===r?x(Et,2):x(At,1)}function v(e){var r=dr.charCodeAt(br+1),t=1;return r===e?(t=62===e&&62===dr.charCodeAt(br+2)?3:2,61===dr.charCodeAt(br+t)?x(Et,t+1):x(jt,t)):33==r&&60==e&&45==dr.charCodeAt(br+2)&&45==dr.charCodeAt(br+3)?(br+=4,c(),u(),g()):(61===r&&(t=61===dr.charCodeAt(br+2)?3:2),x(Ot,t))}function b(e){var r=dr.charCodeAt(br+1);return 61===r?x(qt,61===dr.charCodeAt(br+2)?3:2):x(61===e?Ct:It,1)}function y(e){switch(e){case 46:return l();case 40:return++br,i(mt);case 41:return++br,i(vt);case 59:return++br,i(yt);case 44:return++br,i(bt);case 91:return++br,i(ft);case 93:return++br,i(dt);case 123:return++br,i(pt);case 125:return++br,i(ht);case 58:return++br,i(gt);case 63:return++br,i(kt);case 48:var r=dr.charCodeAt(br+1);if(120===r||88===r)return C();case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57:return E(!1);case 34:case 39:return A(e);case 47:return f(e);case 37:case 42:return d();case 124:case 38:return p(e);case 94:return h();case 43:case 45:return m(e);case 60:case 62:return v(e);case 61:case 33:return b(e);case 126:return x(It,1)}return!1}function g(e){if(e?br=yr+1:yr=br,fr.locations&&(xr=new a),e)return k();if(br>=pr)return i(Br);var r=dr.charCodeAt(br);if(Qt(r)||92===r)return L();var n=y(r);if(n===!1){var o=String.fromCharCode(r);if("\\"===o||$t.test(o))return L();t(br,"Unexpected character '"+o+"'")}return n}function x(e,r){var t=dr.slice(br,br+r);br+=r,i(e,t)}function k(){for(var e,r,n="",a=br;;){br>=pr&&t(a,"Unterminated regular expression");var o=dr.charAt(br);if(Gt.test(o)&&t(a,"Unterminated regular expression"),e)e=!1;else{if("["===o)r=!0;else if("]"===o&&r)r=!1;else if("/"===o&&!r)break;e="\\"===o}++br}var n=dr.slice(a,br);++br;var s=I();return s&&!/^[gmsiy]*$/.test(s)&&t(a,"Invalid regexp flag"),i(jr,new RegExp(n,s))}function w(e,r){for(var t=br,n=0,a=0,o=null==r?1/0:r;o>a;++a){var i,s=dr.charCodeAt(br);if(i=s>=97?s-97+10:s>=65?s-65+10:s>=48&&57>=s?s-48:1/0,i>=e)break;++br,n=n*e+i}return br===t||null!=r&&br-t!==r?null:n}function C(){br+=2;var e=w(16);return null==e&&t(yr+2,"Expected hexadecimal number"),Qt(dr.charCodeAt(br))&&t(br,"Identifier directly after number"),i(Or,e)}function E(e){var r=br,n=!1,a=48===dr.charCodeAt(br);e||null!==w(10)||t(r,"Invalid number"),46===dr.charCodeAt(br)&&(++br,w(10),n=!0);var o=dr.charCodeAt(br);(69===o||101===o)&&(o=dr.charCodeAt(++br),(43===o||45===o)&&++br,null===w(10)&&t(r,"Invalid number"),n=!0),Qt(dr.charCodeAt(br))&&t(br,"Identifier directly after number");var s,c=dr.slice(r,br);return n?s=parseFloat(c):a&&1!==c.length?/[89]/.test(c)||Tr?t(r,"Invalid number"):s=parseInt(c,8):s=parseInt(c,10),i(Or,s)}function A(e){br++;for(var r="";;){br>=pr&&t(yr,"Unterminated string constant");var n=dr.charCodeAt(br);if(n===e)return++br,i(Dr,r);if(92===n){n=dr.charCodeAt(++br);var a=/^[0-7]+/.exec(dr.slice(br,br+3));for(a&&(a=a[0]);a&&parseInt(a,8)>255;)a=a.slice(0,a.length-1);if("0"===a&&(a=null),++br,a)Tr&&t(br-2,"Octal literal in strict mode"),r+=String.fromCharCode(parseInt(a,8)),br+=a.length-1;else switch(n){case 110:r+="\n";break;case 114:r+="\r";break;case 120:r+=String.fromCharCode(S(2));break;case 117:r+=String.fromCharCode(S(4));break;case 85:r+=String.fromCharCode(S(8));break;case 116:r+=" ";break;case 98:r+="\b";break;case 118:r+=" ";break;case 102:r+="\f";break;case 48:r+="\0";break;case 13:10===dr.charCodeAt(br)&&++br;case 10:fr.locations&&(Sr=br,++Ar);break;default:r+=String.fromCharCode(n)}}else(13===n||10===n||8232===n||8233===n)&&t(yr,"Unterminated string constant"),r+=String.fromCharCode(n),++br}}function S(e){var r=w(16,e);return null===r&&t(yr,"Bad character escape sequence"),r}function I(){Bt=!1;for(var e,r=!0,n=br;;){var a=dr.charCodeAt(br);if(Yt(a))Bt&&(e+=dr.charAt(br)),++br;else{if(92!==a)break;Bt||(e=dr.slice(n,br)),Bt=!0,117!=dr.charCodeAt(++br)&&t(br,"Expecting Unicode escape sequence \\uXXXX"),++br;var o=S(4),i=String.fromCharCode(o);i||t(br-1,"Invalid Unicode escape"),(r?Qt(o):Yt(o))||t(br-4,"Invalid Unicode escape"),e+=i}r=!1}return Bt?e:dr.slice(n,br)}function L(){var e=I(),r=Fr;return Bt||(Wt(e)?r=lt[e]:(fr.forbidReserved&&(3===fr.ecmaVersion?Mt:zt)(e)||Tr&&Xt(e))&&t(yr,"The keyword '"+e+"' is reserved")),i(r,e)}function U(){Ir=yr,Lr=gr,Ur=kr,g()}function R(e){if(Tr=e,br=Lr,fr.locations)for(;Sr>br;)Sr=dr.lastIndexOf("\n",Sr-2)+1,--Ar;u(),g()}function V(){this.type=null,this.start=yr,this.end=null}function T(){this.start=xr,this.end=null,null!==hr&&(this.source=hr)}function q(){var e=new V;return fr.locations&&(e.loc=new T),fr.ranges&&(e.range=[yr,0]),e}function O(e){var r=new V;return r.start=e.start,fr.locations&&(r.loc=new T,r.loc.start=e.loc.start),fr.ranges&&(r.range=[e.range[0],0]),r}function j(e,r){return e.type=r,e.end=Lr,fr.locations&&(e.loc.end=Ur),fr.ranges&&(e.range[1]=Lr),e}function D(e){return fr.ecmaVersion>=5&&"ExpressionStatement"===e.type&&"Literal"===e.expression.type&&"use strict"===e.expression.value}function F(e){return wr===e?(U(),!0):void 0}function B(){return!fr.strictSemicolons&&(wr===Br||wr===ht||Gt.test(dr.slice(Lr,yr)))}function M(){F(yt)||B()||X()}function z(e){wr===e?U():X()}function X(){t(yr,"Unexpected token")}function N(e){"Identifier"!==e.type&&"MemberExpression"!==e.type&&t(e.start,"Assigning to rvalue"),Tr&&"Identifier"===e.type&&Nt(e.name)&&t(e.start,"Assigning to "+e.name+" in strict mode")}function W(e){Ir=Lr=br,fr.locations&&(Ur=new a),Rr=Tr=null,Vr=[],g();var r=e||q(),t=!0;for(e||(r.body=[]);wr!==Br;){var n=J();r.body.push(n),t&&D(n)&&R(!0),t=!1}return j(r,"Program")}function J(){(wr===wt||wr===Et&&"/="==Cr)&&g(!0);var e=wr,r=q();switch(e){case Mr:case Nr:U();var n=e===Mr;F(yt)||B()?r.label=null:wr!==Fr?X():(r.label=lr(),M());for(var a=0;a<Vr.length;++a){var o=Vr[a];if(null==r.label||o.name===r.label.name){if(null!=o.kind&&(n||"loop"===o.kind))break;if(r.label&&n)break}}return a===Vr.length&&t(r.start,"Unsyntactic "+e.keyword),j(r,n?"BreakStatement":"ContinueStatement");case Wr:return U(),M(),j(r,"DebuggerStatement");case Pr:return U(),Vr.push(Zt),r.body=J(),Vr.pop(),z(tt),r.test=P(),M(),j(r,"DoWhileStatement");case _r:if(U(),Vr.push(Zt),z(mt),wr===yt)return $(r,null);if(wr===rt){var i=q();return U(),G(i,!0),j(i,"VariableDeclaration"),1===i.declarations.length&&F(ut)?_(r,i):$(r,i)}var i=K(!1,!0);return F(ut)?(N(i),_(r,i)):$(r,i);case Gr:return U(),cr(r,!0);case Kr:return U(),r.test=P(),r.consequent=J(),r.alternate=F(Hr)?J():null,j(r,"IfStatement");case Qr:return Rr||t(yr,"'return' outside of function"),U(),F(yt)||B()?r.argument=null:(r.argument=K(),M()),j(r,"ReturnStatement");case Yr:U(),r.discriminant=P(),r.cases=[],z(pt),Vr.push(en);for(var s,c;wr!=ht;)if(wr===zr||wr===Jr){var u=wr===zr;s&&j(s,"SwitchCase"),r.cases.push(s=q()),s.consequent=[],U(),u?s.test=K():(c&&t(Ir,"Multiple default clauses"),c=!0,s.test=null),z(gt)}else s||X(),s.consequent.push(J());return s&&j(s,"SwitchCase"),U(),Vr.pop(),j(r,"SwitchStatement");case Zr:return U(),Gt.test(dr.slice(Lr,yr))&&t(Lr,"Illegal newline after throw"),r.argument=K(),M(),j(r,"ThrowStatement");case et:if(U(),r.block=H(),r.handler=null,wr===Xr){var l=q();U(),z(mt),l.param=lr(),Tr&&Nt(l.param.name)&&t(l.param.start,"Binding "+l.param.name+" in strict mode"),z(vt),l.guard=null,l.body=H(),r.handler=j(l,"CatchClause")}return r.guardedHandlers=qr,r.finalizer=F($r)?H():null,r.handler||r.finalizer||t(r.start,"Missing catch or finally clause"),j(r,"TryStatement");case rt:return U(),G(r),M(),j(r,"VariableDeclaration");case tt:return U(),r.test=P(),Vr.push(Zt),r.body=J(),Vr.pop(),j(r,"WhileStatement");case nt:return Tr&&t(yr,"'with' in strict mode"),U(),r.object=P(),r.body=J(),j(r,"WithStatement");case pt:return H();case yt:return U(),j(r,"EmptyStatement");default:var f=Cr,d=K();if(e===Fr&&"Identifier"===d.type&&F(gt)){for(var a=0;a<Vr.length;++a)Vr[a].name===f&&t(d.start,"Label '"+f+"' is already declared");var p=wr.isLoop?"loop":wr===Yr?"switch":null;return Vr.push({name:f,kind:p}),r.body=J(),Vr.pop(),r.label=d,j(r,"LabeledStatement")}return r.expression=d,M(),j(r,"ExpressionStatement")}}function P(){z(mt);var e=K();return z(vt),e}function H(e){var r,t=q(),n=!0,a=!1;for(t.body=[],z(pt);!F(ht);){var o=J();t.body.push(o),n&&e&&D(o)&&(r=a,R(a=!0)),n=!1}return a&&!r&&R(!1),j(t,"BlockStatement")}function $(e,r){return e.init=r,z(yt),e.test=wr===yt?null:K(),z(yt),e.update=wr===vt?null:K(),z(vt),e.body=J(),Vr.pop(),j(e,"ForStatement")}function _(e,r){return e.left=r,e.right=K(),z(vt),e.body=J(),Vr.pop(),j(e,"ForInStatement")}function G(e,r){for(e.declarations=[],e.kind="var";;){var n=q();if(n.id=lr(),Tr&&Nt(n.id.name)&&t(n.id.start,"Binding "+n.id.name+" in strict mode"),n.init=F(Ct)?K(!0,r):null,e.declarations.push(j(n,"VariableDeclarator")),!F(bt))break}return e}function K(e,r){var t=Q(r);if(!e&&wr===bt){var n=O(t);for(n.expressions=[t];F(bt);)n.expressions.push(Q(r));return j(n,"SequenceExpression")}return t}function Q(e){var r=Y(e);if(wr.isAssign){var t=O(r);return t.operator=Cr,t.left=r,U(),t.right=Q(e),N(r),j(t,"AssignmentExpression")}return r}function Y(e){var r=Z(e);if(F(kt)){var t=O(r);return t.test=r,t.consequent=K(!0),z(gt),t.alternate=K(!0,e),j(t,"ConditionalExpression")}return r}function Z(e){return er(rr(),-1,e)}function er(e,r,t){var n=wr.binop;if(null!=n&&(!t||wr!==ut)&&n>r){var a=O(e);a.left=e,a.operator=Cr,U(),a.right=er(rr(),n,t);var o=j(a,/&&|\|\|/.test(a.operator)?"LogicalExpression":"BinaryExpression");return er(o,r,t)}return e}function rr(){if(wr.prefix){var e=q(),r=wr.isUpdate;return e.operator=Cr,e.prefix=!0,Er=!0,U(),e.argument=rr(),r?N(e.argument):Tr&&"delete"===e.operator&&"Identifier"===e.argument.type&&t(e.start,"Deleting local variable in strict mode"),j(e,r?"UpdateExpression":"UnaryExpression")}for(var n=tr();wr.postfix&&!B();){var e=O(n);e.operator=Cr,e.prefix=!1,e.argument=n,N(n),U(),n=j(e,"UpdateExpression")}return n}function tr(){return nr(ar())}function nr(e,r){if(F(xt)){var t=O(e);return t.object=e,t.property=lr(!0),t.computed=!1,nr(j(t,"MemberExpression"),r)}if(F(ft)){var t=O(e);return 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RegExp("["+Pt+"]"),_t=new RegExp("["+Pt+Ht+"]"),Gt=/[\n\r\u2028\u2029]/,Kt=/\r\n|[\n\r\u2028\u2029]/g,Qt=e.isIdentifierStart=function(e){return 65>e?36===e:91>e?!0:97>e?95===e:123>e?!0:e>=170&&$t.test(String.fromCharCode(e))},Yt=e.isIdentifierChar=function(e){return 48>e?36===e:58>e?!0:65>e?!1:91>e?!0:97>e?95===e:123>e?!0:e>=170&&_t.test(String.fromCharCode(e))},Zt={kind:"loop"},en={kind:"switch"}});
var binaryOperators = {
'+': '__add',
'-': '__subtract',
'*': '__multiply',
'/': '__divide',
'%': '__modulo',
'==': 'equals',
'!=': 'equals'
};
var unaryOperators = {
'-': '__negate',
'+': null
};
var fields = Base.each(
['add', 'subtract', 'multiply', 'divide', 'modulo', 'negate'],
function(name) {
this['__' + name] = '#' + name;
},
{}
);
Point.inject(fields);
Size.inject(fields);
Color.inject(fields);
function __$__(left, operator, right) {
var handler = binaryOperators[operator];
if (left && left[handler]) {
var res = left[handler](right);
return operator === '!=' ? !res : res;
}
switch (operator) {
case '+': return left + right;
case '-': return left - right;
case '*': return left * right;
case '/': return left / right;
case '%': return left % right;
case '==': return left == right;
case '!=': return left != right;
}
}
function $__(operator, value) {
var handler = unaryOperators[operator];
if (handler && value && value[handler])
return value[handler]();
switch (operator) {
case '+': return +value;
case '-': return -value;
}
}
function parse(code, options) {
return scope.acorn.parse(code, options);
}
function compile(code, url, options) {
if (!code)
return '';
options = options || {};
url = url || '';
var insertions = [];
function getOffset(offset) {
for (var i = 0, l = insertions.length; i < l; i++) {
var insertion = insertions[i];
if (insertion[0] >= offset)
break;
offset += insertion[1];
}
return offset;
}
function getCode(node) {
return code.substring(getOffset(node.range[0]),
getOffset(node.range[1]));
}
function getBetween(left, right) {
return code.substring(getOffset(left.range[1]),
getOffset(right.range[0]));
}
function replaceCode(node, str) {
var start = getOffset(node.range[0]),
end = getOffset(node.range[1]),
insert = 0;
for (var i = insertions.length - 1; i >= 0; i--) {
if (start > insertions[i][0]) {
insert = i + 1;
break;
}
}
insertions.splice(insert, 0, [start, str.length - end + start]);
code = code.substring(0, start) + str + code.substring(end);
}
function walkAST(node, parent) {
if (!node)
return;
for (var key in node) {
if (key === 'range' || key === 'loc')
continue;
var value = node[key];
if (Array.isArray(value)) {
for (var i = 0, l = value.length; i < l; i++)
walkAST(value[i], node);
} else if (value && typeof value === 'object') {
walkAST(value, node);
}
}
switch (node.type) {
case 'UnaryExpression':
if (node.operator in unaryOperators
&& node.argument.type !== 'Literal') {
var arg = getCode(node.argument);
replaceCode(node, '$__("' + node.operator + '", '
+ arg + ')');
}
break;
case 'BinaryExpression':
if (node.operator in binaryOperators
&& node.left.type !== 'Literal') {
var left = getCode(node.left),
right = getCode(node.right),
between = getBetween(node.left, node.right),
operator = node.operator;
replaceCode(node, '__$__(' + left + ','
+ between.replace(new RegExp('\\' + operator),
'"' + operator + '"')
+ ', ' + right + ')');
}
break;
case 'UpdateExpression':
case 'AssignmentExpression':
var parentType = parent && parent.type;
if (!(
parentType === 'ForStatement'
|| parentType === 'BinaryExpression'
&& /^[=!<>]/.test(parent.operator)
|| parentType === 'MemberExpression' && parent.computed
)) {
if (node.type === 'UpdateExpression') {
var arg = getCode(node.argument),
exp = '__$__(' + arg + ', "' + node.operator[0]
+ '", 1)',
str = arg + ' = ' + exp;
if (!node.prefix
&& (parentType === 'AssignmentExpression'
|| parentType === 'VariableDeclarator')) {
if (getCode(parent.left || parent.id) === arg)
str = exp;
str = arg + '; ' + str;
}
replaceCode(node, str);
} else {
if (/^.=$/.test(node.operator)
&& node.left.type !== 'Literal') {
var left = getCode(node.left),
right = getCode(node.right);
replaceCode(node, left + ' = __$__(' + left + ', "'
+ node.operator[0] + '", ' + right + ')');
}
}
}
break;
}
}
var sourceMap = null,
browser = paper.browser,
version = browser.versionNumber,
lineBreaks = /\r\n|\n|\r/mg;
if (browser.chrome && version >= 30
|| browser.webkit && version >= 537.76
|| browser.firefox && version >= 23) {
var offset = 0;
if (window.location.href.indexOf(url) === 0) {
var html = document.getElementsByTagName('html')[0].innerHTML;
offset = html.substr(0, html.indexOf(code) + 1).match(
lineBreaks).length + 1;
}
var mappings = ['AAAA'];
mappings.length = (code.match(lineBreaks) || []).length + 1 + offset;
sourceMap = {
version: 3,
file: url,
names:[],
mappings: mappings.join(';AACA'),
sourceRoot: '',
sources: [url]
};
var source = options.source || !url && code;
if (source)
sourceMap.sourcesContent = [source];
}
walkAST(parse(code, { ranges: true }));
if (sourceMap) {
code = new Array(offset + 1).join('\n') + code
+ "\n//# sourceMappingURL=data:application/json;base64,"
+ (btoa(unescape(encodeURIComponent(
JSON.stringify(sourceMap)))))
+ "\n//# sourceURL=" + (url || 'paperscript');
}
return code;
}
function execute(code, scope, url, options) {
paper = scope;
var view = scope.getView(),
tool = /\s+on(?:Key|Mouse)(?:Up|Down|Move|Drag)\b/.test(code)
? new Tool()
: null,
toolHandlers = tool ? tool._events : [],
handlers = ['onFrame', 'onResize'].concat(toolHandlers),
params = [],
args = [],
func;
code = compile(code, url, options);
function expose(scope, hidden) {
for (var key in scope) {
if ((hidden || !/^_/.test(key)) && new RegExp('([\\b\\s\\W]|^)'
+ key.replace(/\$/g, '\\$') + '\\b').test(code)) {
params.push(key);
args.push(scope[key]);
}
}
}
expose({ __$__: __$__, $__: $__, paper: scope, view: view, tool: tool },
true);
expose(scope);
handlers = Base.each(handlers, function(key) {
if (new RegExp('\\s+' + key + '\\b').test(code)) {
params.push(key);
this.push(key + ': ' + key);
}
}, []).join(', ');
if (handlers)
code += '\nreturn { ' + handlers + ' };';
var browser = paper.browser;
if (browser.chrome || browser.firefox) {
var script = document.createElement('script'),
head = document.head || document.getElementsByTagName('head')[0];
if (browser.firefox)
code = '\n' + code;
script.appendChild(document.createTextNode(
'paper._execute = function(' + params + ') {' + code + '\n}'
));
head.appendChild(script);
func = paper._execute;
delete paper._execute;
head.removeChild(script);
} else {
func = Function(params, code);
}
var res = func.apply(scope, args) || {};
Base.each(toolHandlers, function(key) {
var value = res[key];
if (value)
tool[key] = value;
});
if (view) {
if (res.onResize)
view.setOnResize(res.onResize);
view.emit('resize', {
size: view.size,
delta: new Point()
});
if (res.onFrame)
view.setOnFrame(res.onFrame);
view.update();
}
}
function loadScript(script) {
if (/^text\/(?:x-|)paperscript$/.test(script.type)
&& PaperScope.getAttribute(script, 'ignore') !== 'true') {
var canvasId = PaperScope.getAttribute(script, 'canvas'),
canvas = document.getElementById(canvasId),
src = script.src || script.getAttribute('data-src'),
async = PaperScope.hasAttribute(script, 'async'),
scopeAttribute = 'data-paper-scope';
if (!canvas)
throw new Error('Unable to find canvas with id "'
+ canvasId + '"');
var scope = PaperScope.get(canvas.getAttribute(scopeAttribute))
|| new PaperScope().setup(canvas);
canvas.setAttribute(scopeAttribute, scope._id);
if (src) {
Http.request('get', src, function(code) {
execute(code, scope, src);
}, async);
} else {
execute(script.innerHTML, scope, script.baseURI);
}
script.setAttribute('data-paper-ignore', 'true');
return scope;
}
}
function loadAll() {
Base.each(document.getElementsByTagName('script'), loadScript);
}
function load(script) {
return script ? loadScript(script) : loadAll();
}
if (document.readyState === 'complete') {
setTimeout(loadAll);
} else {
DomEvent.add(window, { load: loadAll });
}
return {
compile: compile,
execute: execute,
load: load,
parse: parse
};
}).call(this);
paper = new (PaperScope.inject(Base.exports, {
enumerable: true,
Base: Base,
Numerical: Numerical,
Key: Key
}))();
if (typeof define === 'function' && define.amd) {
define('paper', paper);
} else if (typeof module === 'object' && module) {
module.exports = paper;
}
return paper;
};