import { Cartesian2 } from "../../Source/Cesium.js";
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import { Cartesian3 } from "../../Source/Cesium.js";
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import { Color } from "../../Source/Cesium.js";
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import { Particle } from "../../Source/Cesium.js";
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describe("Scene/Particle", function () {
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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(
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new Cartesian3(-1.0, 1.0, 1.0),
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new Cartesian3()
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);
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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(
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p.position,
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Cartesian3.multiplyByScalar(p.velocity, dt, new Cartesian3()),
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new Cartesian3()
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);
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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(
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new Cartesian3(-1.0, 1.0, 1.0),
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new Cartesian3()
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);
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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(
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p.position,
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Cartesian3.multiplyByScalar(p.velocity, dt, new Cartesian3()),
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new Cartesian3()
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);
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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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