toolkit/javascript/d3/test/svg/line-test.js
author Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
Fri, 18 Apr 2014 14:31:58 +0200
changeset 51 79833eaa394a
parent 47 c0b4a8b5a012
permissions -rw-r--r--
set up second level for navigation
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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require("../env");
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require("../../d3");
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var vows = require("vows"),
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    assert = require("assert");
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var suite = vows.describe("d3.svg.line");
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suite.addBatch({
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  "line": {
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    topic: function() {
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      return d3.svg.line;
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    },
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    "x defaults to a function accessor": function(line) {
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      var l = line();
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      assert.pathEqual(l([[1, 2], [4, 3]]), "M1,2L4,3");
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      assert.typeOf(l.x(), "function");
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    },
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    "x can be defined as a constant": function(line) {
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      var l = line().x(0);
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      assert.pathEqual(l([[1, 2], [4, 3]]), "M0,2L0,3");
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      assert.equal(l.x(), 0);
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    },
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    "x can be defined as a function": function(line) {
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      var l = line().x(f), t = {}, dd = [], ii = [], tt = [];
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      function f(d, i) { dd.push(d); ii.push(i); tt.push(this); return 0; }
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      assert.pathEqual(l.call(t, [[1, 2], [4, 3]]), "M0,2L0,3");
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      assert.deepEqual(dd, [[1, 2], [4, 3]], "expected data, got {actual}");
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      assert.deepEqual(ii, [0, 1], "expected index, got {actual}");
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      assert.deepEqual(tt, [t, t], "expected this, got {actual}");
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    },
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    "y defaults to a function accessor": function(line) {
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      var l = line();
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      assert.pathEqual(l([[1, 2], [4, 3]]), "M1,2L4,3");
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      assert.typeOf(l.y(), "function");
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    },
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    "y can be defined as a constant": function(line) {
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      var l = line().y(0);
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      assert.pathEqual(l([[1, 2], [4, 3]]), "M1,0L4,0");
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      assert.equal(l.y(), 0);
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    },
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    "y can be defined as a function": function(line) {
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      var l = line().y(f), t = {}, dd = [], ii = [], tt = [];
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      function f(d, i) { dd.push(d); ii.push(i); tt.push(this); return 0; }
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      assert.pathEqual(l.call(t, [[1, 2], [4, 3]]), "M1,0L4,0");
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      assert.deepEqual(dd, [[1, 2], [4, 3]], "expected data, got {actual}");
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      assert.deepEqual(ii, [0, 1], "expected index, got {actual}");
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      assert.deepEqual(tt, [t, t], "expected this, got {actual}");
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    },
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    "interpolate defaults to linear": function(line) {
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      assert.equal(line().interpolate(), "linear");
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    },
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    "interpolate can be defined as a constant": function(line) {
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      var l = line().interpolate("step-before");
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      assert.pathEqual(l([[0, 0], [1, 1]]), "M0,0V1H1");
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      assert.equal(l.interpolate(), "step-before");
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    },
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    "tension defaults to .7": function(line) {
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      assert.equal(line().tension(), .7);
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    },
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    "tension can be specified as a constant": function(line) {
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      var l = line().tension(.5);
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      assert.equal(l.tension(), .5);
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    },
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    "returns null if input points array is empty": function(line) {
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      assert.isNull(line()([]));
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    },
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    "interpolate(linear)": {
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      "supports linear interpolation": function(line) {
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        var l = line().interpolate("linear");
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        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M0,0L1,1L2,0L3,1L4,0");
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      }
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    },
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    "interpolate(step)": {
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      "supports step-before interpolation": function(line) {
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        var l = line().interpolate("step-before");
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        assert.pathEqual(l([[0, 0]]), "M0,0");
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        assert.pathEqual(l([[0, 0], [1, 1]]), "M0,0V1H1");
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        assert.pathEqual(l([[0, 0], [1, 1], [2, 0]]), "M0,0V1H1V0H2");
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      },
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      "supports step-after interpolation": function(line) {
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        var l = line().interpolate("step-after");
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        assert.pathEqual(l([[0, 0]]), "M0,0");
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        assert.pathEqual(l([[0, 0], [1, 1]]), "M0,0H1V1");
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        assert.pathEqual(l([[0, 0], [1, 1], [2, 0]]), "M0,0H1V1H2V0");
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      }
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    },
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    "interpolate(basis)": {
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      "supports basis interpolation": function(line) {
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        var l = line().interpolate("basis");
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        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M0,0C0,0,0,0,0.16666666666666666,0.16666666666666666C0.3333333333333333,0.3333333333333333,0.6666666666666666,0.6666666666666666,1,0.6666666666666666C1.3333333333333333,0.6666666666666666,1.6666666666666665,0.3333333333333333,2,0.3333333333333333C2.333333333333333,0.3333333333333333,2.6666666666666665,0.6666666666666666,3,0.6666666666666666C3.333333333333333,0.6666666666666666,3.6666666666666665,0.3333333333333333,3.833333333333333,0.16666666666666666C4,0,4,0,3.9999999999999996,0");
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      },
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      "supports basis-open interpolation": function(line) {
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        var l = line().interpolate("basis-open");
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        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M1,0.6666666666666666C1.3333333333333333,0.6666666666666666,1.6666666666666665,0.3333333333333333,2,0.3333333333333333C2.333333333333333,0.3333333333333333,2.6666666666666665,0.6666666666666666,3,0.6666666666666666");
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   104
      },
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parents:
diff changeset
   105
      "supports basis-closed interpolation": function(line) {
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diff changeset
   106
        var l = line().interpolate("basis-closed");
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diff changeset
   107
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M2,0.3333333333333333C2.333333333333333,0.3333333333333333,2.6666666666666665,0.6666666666666666,3,0.6666666666666666C3.333333333333333,0.6666666666666666,3.6666666666666665,0.3333333333333333,3.1666666666666665,0.16666666666666666C2.6666666666666665,0,1.3333333333333333,0,0.8333333333333333,0.16666666666666666C0.3333333333333333,0.3333333333333333,0.6666666666666666,0.6666666666666666,1,0.6666666666666666C1.3333333333333333,0.6666666666666666,1.6666666666666665,0.3333333333333333,2,0.3333333333333333");
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diff changeset
   108
      },
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parents:
diff changeset
   109
      "basis interpolation reverts to linear with fewer than three points": function(line) {
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diff changeset
   110
        var l = line().interpolate("basis"), d = line();
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diff changeset
   111
        assert.pathEqual(l([[0, 0]]), d([[0, 0]]));
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diff changeset
   112
        assert.pathEqual(l([[0, 0], [1, 1]]), d([[0, 0], [1, 1]]));
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parents:
diff changeset
   113
      },
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diff changeset
   114
      "basis-open interpolation reverts to linear with fewer than four points": function(line) {
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diff changeset
   115
        var l = line().interpolate("basis-open"), d = line();
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   116
        assert.pathEqual(l([[0, 0]]), d([[0, 0]]));
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   117
        assert.pathEqual(l([[0, 0], [1, 1]]), d([[0, 0], [1, 1]]));
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   118
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0]]), d([[0, 0], [1, 1], [2, 0]]));
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parents:
diff changeset
   119
      },
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   120
      "basis-closed interpolation reverts to linear with fewer than three points": function(line) {
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diff changeset
   121
        var l = line().interpolate("basis-open"), d = line();
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diff changeset
   122
        assert.pathEqual(l([[0, 0]]), d([[0, 0]]));
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   123
        assert.pathEqual(l([[0, 0], [1, 1]]), d([[0, 0], [1, 1]]));
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parents:
diff changeset
   124
      }
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parents:
diff changeset
   125
    },
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parents:
diff changeset
   126
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   127
    "interpolate(bundle)": {
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   128
      "supports bundle interpolation": function(line) {
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   129
        var l = line().interpolate("bundle");
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   130
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M0,0C0,0,0,0,0.16666666666666666,0.11666666666666665C0.3333333333333333,0.2333333333333333,0.6666666666666666,0.4666666666666666,1,0.4666666666666666C1.3333333333333333,0.4666666666666666,1.6666666666666665,0.2333333333333333,2,0.2333333333333333C2.333333333333333,0.2333333333333333,2.6666666666666665,0.4666666666666666,3,0.4666666666666666C3.333333333333333,0.4666666666666666,3.6666666666666665,0.2333333333333333,3.833333333333333,0.11666666666666665C4,0,4,0,4,0");
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diff changeset
   131
      },
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diff changeset
   132
      "observes the specified tension": function(line) {
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parents:
diff changeset
   133
        var l = line().interpolate("bundle").tension(1);
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diff changeset
   134
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), line().interpolate("basis")([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]));
c0b4a8b5a012 add toolkit.html + démonstrateurs
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parents:
diff changeset
   135
      }
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   136
    },
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parents:
diff changeset
   137
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diff changeset
   138
    "interpolate(cardinal)": {
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diff changeset
   139
      "supports cardinal interpolation": function(line) {
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parents:
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   140
        var l = line().interpolate("cardinal");
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diff changeset
   141
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M0,0Q0.8,1,1,1C1.3,1,1.7,0,2,0S2.7,1,3,1Q3.2,1,4,0");
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   142
      },
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parents:
diff changeset
   143
      "supports cardinal-open interpolation": function(line) {
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parents:
diff changeset
   144
        var l = line().interpolate("cardinal-open");
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diff changeset
   145
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M1,1C1.3,1,1.7,0,2,0S2.7,1,3,1");
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   146
      },
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parents:
diff changeset
   147
      "supports cardinal-closed interpolation": function(line) {
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parents:
diff changeset
   148
        var l = line().interpolate("cardinal-closed");
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diff changeset
   149
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M0,0C-0.45,0.15,0.7,1,1,1S1.7,0,2,0S2.7,1,3,1S4.45,0.15,4,0S0.45,-0.15,0,0");
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   150
      },
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parents:
diff changeset
   151
      "cardinal interpolation reverts to linear with fewer than three points": function(line) {
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parents:
diff changeset
   152
        var l = line().interpolate("cardinal"), d = line();
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parents:
diff changeset
   153
        assert.pathEqual(l([[0, 0]]), d([[0, 0]]));
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parents:
diff changeset
   154
        assert.pathEqual(l([[0, 0], [1, 1]]), d([[0, 0], [1, 1]]));
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   155
      },
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   156
      "cardinal-open interpolation reverts to linear with fewer than four points": function(line) {
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parents:
diff changeset
   157
        var l = line().interpolate("cardinal-open"), d = line();
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parents:
diff changeset
   158
        assert.pathEqual(l([[0, 0]]), d([[0, 0]]));
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diff changeset
   159
        assert.pathEqual(l([[0, 0], [1, 1]]), d([[0, 0], [1, 1]]));
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parents:
diff changeset
   160
        assert.pathEqual(l([[0, 0], [1, 1], [2, 0]]), d([[0, 0], [1, 1], [2, 0]]));
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   161
      },
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parents:
diff changeset
   162
      "cardinal-closed interpolation reverts to linear with fewer than three points": function(line) {
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parents:
diff changeset
   163
        var l = line().interpolate("cardinal-open"), d = line();
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parents:
diff changeset
   164
        assert.pathEqual(l([[0, 0]]), d([[0, 0]]));
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parents:
diff changeset
   165
        assert.pathEqual(l([[0, 0], [1, 1]]), d([[0, 0], [1, 1]]));
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   166
      },
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parents:
diff changeset
   167
      "observes the specified tension": function(line) {
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   168
        var l = line().tension(.5);
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parents:
diff changeset
   169
        assert.pathEqual(l.interpolate("cardinal")([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M0,0Q0.6666666666666667,1,1,1C1.5,1,1.5,0,2,0S2.5,1,3,1Q3.3333333333333335,1,4,0");
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parents:
diff changeset
   170
        assert.pathEqual(l.interpolate("cardinal-open")([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M1,1C1.5,1,1.5,0,2,0S2.5,1,3,1");
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parents:
diff changeset
   171
        assert.pathEqual(l.interpolate("cardinal-closed")([[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]), "M0,0C-0.75,0.25,0.5,1,1,1S1.5,0,2,0S2.5,1,3,1S4.75,0.25,4,0S0.75,-0.25,0,0");
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parents:
diff changeset
   172
      }
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   173
    },
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   174
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diff changeset
   175
    "interpolate(monotone)": {
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parents:
diff changeset
   176
      "supports monotone interpolation": function(line) {
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parents:
diff changeset
   177
        var l = line().interpolate("monotone");
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parents:
diff changeset
   178
        assert.pathEqual(l([[0, 0], [1, 1], [2, 1], [3, 0], [4, 0]]), "M0,0C0.08333333333333333,0.08333333333333333,0.6666666666666667,1,1,1S1.6666666666666667,1,2,1S2.6666666666666665,0,3,0S3.8333333333333335,0,4,0");
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
   179
      },
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diff changeset
   180
      "monotone interpolation reverts to linear with fewer than three points": function(line) {
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parents:
diff changeset
   181
        var l = line().interpolate("monotone"), d = line();
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parents:
diff changeset
   182
        assert.pathEqual(l([[0, 0]]), d([[0, 0]]));
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parents:
diff changeset
   183
        assert.pathEqual(l([[0, 0], [1, 1]]), d([[0, 0], [1, 1]]));
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parents:
diff changeset
   184
      }
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parents:
diff changeset
   185
    }
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parents:
diff changeset
   186
  }
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parents:
diff changeset
   187
});
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diff changeset
   188
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   189
suite.export(module);