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60 lines
1.6 KiB
JavaScript
60 lines
1.6 KiB
JavaScript
import { Cartesian3 } from "../../Source/Cesium.js";
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import { CircleEmitter } from "../../Source/Cesium.js";
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import { Particle } from "../../Source/Cesium.js";
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describe("Scene/CircleEmitter", function () {
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var emitter;
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it("default constructor", function () {
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emitter = new CircleEmitter();
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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 CircleEmitter(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 CircleEmitter(0.0);
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}).toThrowDeveloperError();
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expect(function () {
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emitter = new CircleEmitter(-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 CircleEmitter();
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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 CircleEmitter();
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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 CircleEmitter(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(
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emitter.radius
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);
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expect(particle.position.z).toEqual(0.0);
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expect(particle.velocity).toEqual(Cartesian3.UNIT_Z);
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}
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});
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});
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