67 lines
1.9 KiB
JavaScript
67 lines
1.9 KiB
JavaScript
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define(
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function (require) {
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var vector = require('graphics/vector');
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describe('测试点到直线距离', function () {
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it('test verital', function () {
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var p0 = {x: 10, y: 10};
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var p1 = {x: 20, y: 10};
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var p = {x: 50, y: 10};
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expect(vector.getDist(p0, p1, p)).toEqual(0);
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});
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it('test hoz', function () {
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var p0 = {x: 10, y: 10};
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var p1 = {x: 10, y: 20};
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var p = {x: 10, y: 80};
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expect(vector.getDist(p0, p1, p)).toEqual(0);
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});
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it('test sameline', function () {
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var p0 = {x: 10, y: 10};
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var p1 = {x: 50, y: 50};
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var p = {x: 25, y: 25};
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expect(vector.getDist(p0, p1, p)).toEqual(0);
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var p0 = {x: 10, y: 10};
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var p1 = {x: 50, y: 50};
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var p = {x: 80, y: 80};
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expect(vector.getDist(p0, p1, p)).toEqual(0);
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});
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it('test hoz dist', function () {
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var p0 = {x: 10, y: 10};
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var p1 = {x: 10, y: 40};
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var p = {x: 50, y: 47};
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expect(vector.getDist(p0, p1, p)).toEqual(40);
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var p0 = {x: 45, y: 50};
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var p1 = {x: 50, y: 50};
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var p = {x: 90, y: 25};
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expect(vector.getDist(p0, p1, p)).toEqual(25);
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});
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it('test dist', function () {
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var p0 = {x: 50, y: 50};
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var p1 = {x: 0, y: 0};
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var p = {x: 50, y: 0};
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expect(vector.getDist(p0, p1, p)).toBeCloseTo(35.36, 2);
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var p0 = {x: 50, y: 50};
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var p1 = {x: 0, y: 0};
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var p = {x: 50, y: 0};
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expect(vector.getDist(p0, p1, p)).toBeCloseTo(35.36, 2);
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});
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});
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}
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);
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