1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | 'use strict'; var test = require('tape').test; var Point = require('./'); test('Point', function(t) { t.test('.convert', function(t) { t.equal(Point.convert(new Point(20, 30)).equals(new Point(20, 30)), true); t.equal(Point.convert([20, 30]).equals(new Point(20, 30)), true); t.equal(Point.convert('somestring'), 'somestring'); t.end(); }); t.test('vector operations', function(t) { t.test('#mag', function(t) { t.test('gets the magnitude of a vector', function() { t.equal(new Point(0, 2).mag(), 2); t.equal(new Point(0, 0).mag(), 0); t.equal(new Point(10, 0).mag(), 10); t.end(); }); }); t.test('#unit', function(t) { t.test('calculates the unit vector', function() { t.deepEqual(new Point(0, 1000).unit(), new Point(0, 1)); t.end(); }); }); t.test('#equals', function(t) { t.equals((new Point(0, 0).equals(new Point(0, 0))), true, 'equal'); t.equals((new Point(0, 0).equals(new Point(0, 10))), false, 'not equal'); t.end(); }); t.test('#dist', function(t) { t.equals((new Point(0, 10).dist(new Point(0, 0))), 10); t.equals((new Point(Math.sqrt(2), Math.sqrt(2)).dist(new Point(0, 0))), 2); t.equals((new Point(0, 0).dist(new Point(0, 0))), 0); t.end(); }); t.test('#mult', function(t) { t.equals((new Point(0, 0).mult(5)).equals(new Point(0, 0)), true); t.equals((new Point(0, 1).mult(5)).equals(new Point(0, 5)), true); t.equals((new Point(1, 1).mult(5)).equals(new Point(5, 5)), true); t.end(); }); t.test('#div', function(t) { t.equals((new Point(0, 0).div(5)).equals(new Point(0, 0)), true); t.equals((new Point(0, 1).div(5)).equals(new Point(0, 1/5)), true); t.equals((new Point(1, 1).div(5)).equals(new Point(1/5, 1/5)), true); t.end(); }); t.test('#rotate', function(t) { t.equals((new Point(0, 0).rotate(0)).equals(new Point(0, 0)), true); t.deepEquals((new Point(0, 1).rotate(Math.PI/2)).round(), new Point(-1, 0)); t.deepEquals((new Point(0, 1).rotate(Math.PI)).round(), new Point(0, -1)); t.end(); }); t.test('#round', function(t) { t.equals((new Point(0, 0).round()).equals(new Point(0, 0)), true); t.equals((new Point(0, 0.5).round()).equals(new Point(0, 1)), true); t.equals((new Point(0.2, 0.2).round()).equals(new Point(0, 0)), true); t.end(); }); t.test('#angle', function(t) { t.equals((new Point(0, 0).angle()), 0); t.equals((new Point(10, 10).angle()), Math.PI / 4); t.equals((new Point(0, 10).angle()), Math.PI / 2); t.equals((new Point(10, 0).angle()), 0); t.end(); }); t.test('#angleTo', function(t) { var b = new Point(0, 0); t.equals((new Point(0, 0).angleTo(b)), 0); t.equals((new Point(10, 10).angleTo(b)), Math.PI / 4); t.equals((new Point(0, 10).angleTo(b)), Math.PI / 2); t.equals((new Point(10, 0).angleTo(b)), 0); t.end(); }); t.test('#angleWith', function(t) { var b = new Point(0, 0); t.equals((new Point(0, 0).angleWith(b)), 0); t.equals((new Point(10, 10).angleWith(b)), 0); t.equals((new Point(0, 10).angleWith(b)), 0); t.equals((new Point(10, 0).angleWith(b)), 0); t.end(); }); t.test('#angleWithSep', function(t) { t.equals((new Point(0, 0).angleWithSep(0, 0)), 0); t.equals((new Point(10, 10).angleWithSep(0, 0)), 0); t.equals((new Point(0, 10).angleWithSep(0, 0)), 0); t.equals((new Point(10, 0).angleWithSep(0, 0)), 0); t.end(); }); t.test('#matMult', function(t) { t.equals((new Point(0, 0).matMult([0, 0, 0, 0])).equals(new Point(0, 0)), true); t.deepEquals((new Point(1, 1).matMult([0, 0, 0, 0])), new Point(0, 0)); t.deepEquals((new Point(1, 1).matMult([1, 0, 1, 0])), new Point(1, 1)); t.deepEquals((new Point(1, 1).matMult([1, 0, 0, 0])), new Point(1, 0)); t.deepEquals((new Point(1, 1).matMult([0, 0, 1, 0])), new Point(0, 1)); t.deepEquals((new Point(1, 1).matMult([0, 0, 1, 2])), new Point(0, 3)); t.deepEquals((new Point(1, 1).matMult([1, 1, 1, 1])), new Point(2, 2)); t.end(); }); t.test('#perp', function(t) { t.test('calculates a vector perpendicular to the given vector', function() { t.deepEqual(new Point(0, 1000).perp(), new Point(-1000, 0)); t.end(); }); }); t.test('#add', function(t) { t.test('adds two vectors', function() { t.deepEqual(new Point(0, 0).add(new Point(10, 10)), new Point(10, 10)); t.end(); }); }); t.test('#sub', function(t) { t.test('adds subtracts a vector from another', function() { t.deepEqual(new Point(0, 0).sub(new Point(10, 10)), new Point(-10, -10)); t.end(); }); }); }); }); |