1 require("../env");

     2 require("../../d3");

     3 require("../../d3.geom");

     4 

     5 var vows = require("vows"),

     6     assert = require("assert");

     7 

     8 var suite = vows.describe("d3.geom.polygon");

     9 

    10 suite.addBatch({

    11   "counterclockwise polygon (last point equal to start point)": {

    12     topic: function() {

    13       return d3.geom.polygon([[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]);

    14     },

    15     "area": function(polygon) {

    16       assert.equal(polygon.area(), 1);

    17     },

    18     "centroid": function(polygon) {

    19       assert.deepEqual(polygon.centroid(), [.5, .5]);

    20     }

    21   },

    22   "counterclockwise polygon (implicitly ending at start point)": {

    23     topic: function() {

    24       return d3.geom.polygon([[0, 0], [0, 1], [1, 1], [1, 0]]);

    25     },

    26     "area": function(polygon) {

    27       assert.equal(polygon.area(), 1);

    28     },

    29     "centroid": function(polygon) {

    30       assert.deepEqual(polygon.centroid(), [.5, .5]);

    31     }

    32   },

    33   "clockwise polygon (last point equal to start point)": {

    34     topic: function() {

    35       return d3.geom.polygon([[0, 0], [1, 0], [1, 1], [0, 1], [0, 0]]);

    36     },

    37     "area": function(polygon) {

    38       assert.equal(polygon.area(), -1);

    39     },

    40     "centroid": function(polygon) {

    41       assert.deepEqual(polygon.centroid(), [.5, .5]);

    42     }

    43   },

    44   "clockwise polygon (implicitly ending at start point)": {

    45     topic: function() {

    46       return d3.geom.polygon([[0, 0], [1, 0], [1, 1], [0, 1]]);

    47     },

    48     "area": function(polygon) {

    49       assert.equal(polygon.area(), -1);

    50     },

    51     "centroid": function(polygon) {

    52       assert.deepEqual(polygon.centroid(), [.5, .5]);

    53     }

    54   }

    55 });

    56 

    57 suite.export(module);