92 lines
2.4 KiB
JavaScript
92 lines
2.4 KiB
JavaScript
defineSuite([
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'Core/LinearSpline',
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'Core/Cartesian3'
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], function(
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LinearSpline,
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Cartesian3) {
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'use strict';
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var points;
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var times;
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beforeEach(function() {
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points = [
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new Cartesian3(-1.0, -1.0, 0.0),
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new Cartesian3(-0.5, -0.125, 0.0),
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new Cartesian3(0.5, 0.125, 0.0),
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new Cartesian3(1.0, 1.0, 0.0)
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];
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times = [0.0, 1.0, 2.0, 3.0];
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});
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it('constructor throws without points or times', function() {
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expect(function() {
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return new LinearSpline();
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}).toThrowDeveloperError();
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});
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it('constructor throws when control points length is less than 2', function() {
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expect(function() {
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return new LinearSpline({
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points : [Cartesian3.ZERO]
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});
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}).toThrowDeveloperError();
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});
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it('constructor throws when times.length is not equal to points.length', function() {
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expect(function() {
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return new LinearSpline({
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points : points,
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times : [0.0, 1.0]
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});
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}).toThrowDeveloperError();
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});
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it('evaluate throws without time', function() {
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var ls = new LinearSpline({
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points : points,
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times : times
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});
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expect(function() {
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ls.evaluate();
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}).toThrowDeveloperError();
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});
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it('evaluate throws when time is out of range', function() {
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var ls = new LinearSpline({
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points : points,
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times : times
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});
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expect(function() {
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ls.evaluate(times[0] - 1.0);
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}).toThrowDeveloperError();
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});
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it('evaluate without result parameter', function() {
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var ls = new LinearSpline({
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points : points,
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times : times
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});
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expect(ls.evaluate(times[0])).toEqual(points[0]);
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var time = (times[1] + times[0]) * 0.5;
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var t = (time - times[0]) / (times[1] - times[0]);
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expect(ls.evaluate(time)).toEqual(Cartesian3.lerp(points[0], points[1], t, new Cartesian3()));
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});
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it('evaluate with result parameter', function() {
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var ls = new LinearSpline({
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points : points,
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times : times
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});
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var result = new Cartesian3();
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var point = ls.evaluate(times[0], result);
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expect(point).toBe(result);
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expect(result).toEqual(points[0]);
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});
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});
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