100 lines
3.5 KiB
JavaScript
100 lines
3.5 KiB
JavaScript
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defineSuite([
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'Scene/Particle',
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'Core/Cartesian2',
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'Core/Cartesian3',
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'Core/Color'
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], function(
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Particle,
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Cartesian2,
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Cartesian3,
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Color) {
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'use strict';
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it('default constructor', function() {
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var p = new Particle();
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expect(p.mass).toEqual(1.0);
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expect(p.position).toEqual(Cartesian3.ZERO);
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expect(p.velocity).toEqual(Cartesian3.ZERO);
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expect(p.life).toEqual(Number.MAX_VALUE);
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expect(p.image).toBeUndefined();
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expect(p.startColor).toEqual(Color.WHITE);
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expect(p.endColor).toEqual(Color.WHITE);
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expect(p.startScale).toEqual(1.0);
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expect(p.endScale).toEqual(1.0);
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expect(p.imageSize).toEqual(new Cartesian2(1.0, 1.0));
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});
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it('constructor', function() {
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var options = {
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mass : 10.0,
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position : new Cartesian3(1.0, 2.0, 3.0),
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velocity : new Cartesian3(4.0, 5.0, 6.0),
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life : 15.0,
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image : 'url/to/image',
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startColor : Color.MAGENTA,
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endColor : Color.LIME,
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startScale : 0.5,
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endScale : 20.0,
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imageSize : new Cartesian2(7.0, 8.0)
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};
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var p = new Particle(options);
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expect(p.mass).toEqual(options.mass);
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expect(p.position).toEqual(options.position);
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expect(p.velocity).toEqual(options.velocity);
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expect(p.life).toEqual(options.life);
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expect(p.image).toEqual(options.image);
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expect(p.startColor).toEqual(options.startColor);
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expect(p.endColor).toEqual(options.endColor);
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expect(p.startScale).toEqual(options.startScale);
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expect(p.endScale).toEqual(options.endScale);
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expect(p.imageSize).toEqual(options.imageSize);
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});
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it('update without update function', function() {
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var position = new Cartesian3(1.0, 2.0, 3.0);
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var velocity = Cartesian3.normalize(new Cartesian3(-1.0, 1.0, 1.0), new Cartesian3());
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var p = new Particle({
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life : 15.0,
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position : position,
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velocity : velocity
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});
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var dt = 10.0;
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var expectedPosition = Cartesian3.add(p.position, Cartesian3.multiplyByScalar(p.velocity, dt, new Cartesian3()), new Cartesian3());
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expect(p.update(dt)).toEqual(true);
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expect(p.position).toEqual(expectedPosition);
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expect(p.velocity).toEqual(velocity);
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expect(p.age).toEqual(dt);
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expect(p.normalizedAge).toEqual(dt / p.life);
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expect(p.update(dt)).toEqual(false);
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});
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it('update with updateFunction', function() {
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var increaseMass = function(particle, dt) {
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particle.mass++;
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};
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var forces = increaseMass;
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var position = new Cartesian3(1.0, 2.0, 3.0);
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var velocity = Cartesian3.normalize(new Cartesian3(-1.0, 1.0, 1.0), new Cartesian3());
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var p = new Particle({
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life : 15.0,
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position : position,
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velocity : velocity
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});
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var dt = 10.0;
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var expectedMass = p.mass + 1;
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var expectedPosition = Cartesian3.add(p.position, Cartesian3.multiplyByScalar(p.velocity, dt, new Cartesian3()), new Cartesian3());
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expect(p.update(dt, forces)).toEqual(true);
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expect(p.position).toEqual(expectedPosition);
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expect(p.velocity).toEqual(velocity);
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expect(p.age).toEqual(dt);
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expect(p.normalizedAge).toEqual(dt / p.life);
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expect(p.mass).toEqual(expectedMass);
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expect(p.update(dt)).toEqual(false);
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});
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});
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