62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
defineSuite([
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'Scene/SphereEmitter',
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'Core/Cartesian3',
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'Scene/Particle'
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], function(
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SphereEmitter,
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Cartesian3,
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Particle) {
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'use strict';
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var emitter;
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it('default constructor', function() {
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emitter = new SphereEmitter();
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expect(emitter.radius).toEqual(1.0);
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});
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it('constructor', function() {
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emitter = new SphereEmitter(5.0);
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expect(emitter.radius).toEqual(5.0);
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});
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it('constructor throws with invalid radius', function() {
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expect(function() {
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emitter = new SphereEmitter(0.0);
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}).toThrowDeveloperError();
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expect(function() {
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emitter = new SphereEmitter(-1.0);
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}).toThrowDeveloperError();
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});
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it('radius setter', function() {
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emitter = new SphereEmitter();
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emitter.radius = 5.0;
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expect(emitter.radius).toEqual(5.0);
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});
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it('radius setter throws with invalid value', function() {
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emitter = new SphereEmitter();
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expect(function() {
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emitter.radius = undefined;
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}).toThrowDeveloperError();
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expect(function() {
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emitter.radius = 0.0;
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}).toThrowDeveloperError();
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expect(function() {
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emitter.radius = -1.0;
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}).toThrowDeveloperError();
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});
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it('emits', function() {
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emitter = new SphereEmitter(5.0);
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var particle = new Particle();
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for (var i = 0; i < 1000; ++i) {
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emitter.emit(particle);
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expect(Cartesian3.magnitude(particle.position)).toBeLessThanOrEqualTo(emitter.radius);
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expect(particle.velocity).toEqual(Cartesian3.normalize(particle.position, new Cartesian3()));
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}
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});
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});
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