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- import Cartesian3 from "../Core/Cartesian3.js";
- import Check from "../Core/Check.js";
- import defaultValue from "../Core/defaultValue.js";
- import CesiumMath from "../Core/Math.js";
- var defaultDimensions = new Cartesian3(1.0, 1.0, 1.0);
- function BoxEmitter(dimensions) {
- dimensions = defaultValue(dimensions, defaultDimensions);
-
- Check.defined("dimensions", dimensions);
- Check.typeOf.number.greaterThanOrEquals("dimensions.x", dimensions.x, 0.0);
- Check.typeOf.number.greaterThanOrEquals("dimensions.y", dimensions.y, 0.0);
- Check.typeOf.number.greaterThanOrEquals("dimensions.z", dimensions.z, 0.0);
-
- this._dimensions = Cartesian3.clone(dimensions);
- }
- Object.defineProperties(BoxEmitter.prototype, {
-
- dimensions: {
- get: function () {
- return this._dimensions;
- },
- set: function (value) {
-
- Check.defined("value", value);
- Check.typeOf.number.greaterThanOrEquals("value.x", value.x, 0.0);
- Check.typeOf.number.greaterThanOrEquals("value.y", value.y, 0.0);
- Check.typeOf.number.greaterThanOrEquals("value.z", value.z, 0.0);
-
- Cartesian3.clone(value, this._dimensions);
- },
- },
- });
- var scratchHalfDim = new Cartesian3();
- BoxEmitter.prototype.emit = function (particle) {
- var dim = this._dimensions;
- var halfDim = Cartesian3.multiplyByScalar(dim, 0.5, scratchHalfDim);
- var x = CesiumMath.randomBetween(-halfDim.x, halfDim.x);
- var y = CesiumMath.randomBetween(-halfDim.y, halfDim.y);
- var z = CesiumMath.randomBetween(-halfDim.z, halfDim.z);
- particle.position = Cartesian3.fromElements(x, y, z, particle.position);
- particle.velocity = Cartesian3.normalize(
- particle.position,
- particle.velocity
- );
- };
- export default BoxEmitter;
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