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var tape = require('tape'),
utils = require('../build/utils');
tape('linearDependent', function(test) {
test.test('linearDependent of zeroes', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 0, y: 0, z: 0 };
test.ok(utils.linearDependent(v0, v1));
test.end();
});
test.test('linearDependent with y=0 and z=0', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 1, y: 0, z: 0 },
v2 = { x: 2, y: 0, z: 0 };
test.ok(utils.linearDependent(v0, v1));
test.ok(utils.linearDependent(v1, v0));
test.ok(utils.linearDependent(v1, v2));
test.end();
});
test.test('linearDependent with x=0 and z=0', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 0, y: 1, z: 0 },
v2 = { x: 0, y: 2, z: 0 };
test.ok(utils.linearDependent(v0, v1));
test.ok(utils.linearDependent(v1, v0));
test.ok(utils.linearDependent(v1, v2));
test.end();
});
test.test('linearDependent with x=0 and y=0', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 0, y: 0, z: 1 },
v2 = { x: 0, y: 0, z: 2 };
test.ok(utils.linearDependent(v0, v1));
test.ok(utils.linearDependent(v1, v0));
test.ok(utils.linearDependent(v1, v2));
test.end();
});
test.test('linearDependent with z=0', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 1, y: 2, z: 0 },
v2 = { x: 2, y: 1, z: 0 },
v3 = { x: 2, y: 4, z: 0 };
test.ok(utils.linearDependent(v0, v1));
test.ok(utils.linearDependent(v1, v0));
test.notOk(utils.linearDependent(v1, v2));
test.ok(utils.linearDependent(v1, v3));
test.end();
});
test.test('linearDependent with y=0', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 1, y: 0, z: 2 },
v2 = { x: 2, y: 0, z: 1 },
v3 = { x: 2, y: 0, z: 4 };
test.ok(utils.linearDependent(v0, v1));
test.ok(utils.linearDependent(v1, v0));
test.notOk(utils.linearDependent(v1, v2));
test.ok(utils.linearDependent(v1, v3));
test.end();
});
test.test('linearDependent with x=0', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 0, y: 1, z: 2 },
v2 = { x: 0, y: 2, z: 1 },
v3 = { x: 0, y: 2, z: 4 };
test.ok(utils.linearDependent(v0, v1));
test.ok(utils.linearDependent(v1, v0));
test.notOk(utils.linearDependent(v1, v2));
test.ok(utils.linearDependent(v1, v3));
test.end();
});
test.test('linearDependent without 0', function(test) {
var v0 = { x: 0, y: 0, z: 0 },
v1 = { x: 1, y: 2, z: 3 },
v2 = { x: 2, y: 1, z: 3 },
v3 = { x: 2, y: 4, z: 6 };
test.ok(utils.linearDependent(v0, v1));
test.ok(utils.linearDependent(v1, v0));
test.notOk(utils.linearDependent(v1, v2));
test.ok(utils.linearDependent(v1, v3));
test.end();
});
});
tape('polygonDirection', function(test) {
triangle = [[1, 1], [0, 0], [2, 0]];
square = [[0, 0], [1, 0], [1, 1], [0, 1]];
reversedSquare = square.slice().reverse();
selfIntersect = [[0, 0], [0, 1], [1, 0], [1, 1]];
largeCircle = [
[410, 205],
[408.87698855049604, 226.42833496986896],
[405.52025815043015, 247.62189661764066],
[399.96658584050647, 268.3484838468642],
[392.27681881673317, 288.381011830539],
[382.5352077758099, 307.5],
[370.84848384686427, 325.495976719957],
[357.3446892228658, 342.17177430356594],
[342.17177430356594, 357.3446892228658],
[325.49597671995696, 370.84848384686427],
[307.5, 382.5352077758099],
[288.381011830539, 392.27681881673317],
[268.3484838468642, 399.96658584050647],
[247.6218966176407, 405.52025815043015],
[226.428334969869, 408.87698855049604],
[205.00000000000006, 410],
[183.5716650301311, 408.87698855049604],
[162.37810338235943, 405.52025815043015],
[141.65151615313587, 399.9665858405065],
[121.61898816946108, 392.2768188167332],
[102.50000000000011, 382.53520777581],
[84.5040232800431, 370.84848384686427],
[67.82822569643412, 357.3446892228659],
[52.65531077713419, 342.17177430356594],
[39.15151615313579, 325.495976719957],
[27.464792224190063, 307.5],
[17.723181183266803, 288.381011830539],
[10.033414159493503, 268.34848384686416],
[4.479741849569848, 247.62189661764057],
[1.123011449503963, 226.42833496986884],
[0, 204.99999999999983],
[1.123011449503963, 183.57166503013084],
[4.479741849569876, 162.37810338235911],
[10.033414159493589, 141.65151615313556],
[17.723181183266945, 121.6189881694607],
[27.464792224190234, 102.49999999999973],
[39.15151615313599, 84.50402328004273],
[52.65531077713442, 67.82822569643378],
[67.82822569643434, 52.655310777133934],
[84.50402328004328, 39.15151615313559],
[102.50000000000024, 27.46479222418995],
[121.61898816946115, 17.723181183266718],
[141.65151615313593, 10.033414159493475],
[162.37810338235943, 4.479741849569848],
[183.57166503013107, 1.123011449503963],
[204.99999999999997, 0],
[226.42833496986887, 1.123011449503963],
[247.62189661764052, 4.47974184956982],
[268.34848384686404, 10.033414159493447],
[288.3810118305388, 17.723181183266718],
[307.4999999999997, 27.464792224189893],
[325.4959767199567, 39.15151615313553],
[342.1717743035656, 52.65531077713385],
[357.34468922286544, 67.82822569643366],
[370.84848384686387, 84.50402328004253],
[382.53520777580957, 102.49999999999943],
[392.2768188167329, 121.61898816946031],
[399.96658584050624, 141.65151615313505],
[405.52025815043, 162.37810338235852],
[408.8769885504959, 183.57166503013013]
];
test.equal(utils.polygonDirection(triangle), 1);
test.equal(utils.polygonDirection(square), 1);
test.equal(utils.polygonDirection(reversedSquare), -1);
test.equal(utils.polygonDirection(selfIntersect), undefined);
test.equal(utils.polygonDirection(largeCircle), 1);
test.end();
});