354 lines
11 KiB
HTML
354 lines
11 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
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<meta name="description" content="Particle systems.">
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<meta name="cesium-sandcastle-labels" content="Beginner, Showcases">
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<title>Cesium Demo</title>
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<script type="text/javascript" src="../Sandcastle-header.js"></script>
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<script type="text/javascript" src="../../../ThirdParty/requirejs-2.1.20/require.js"></script>
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<script type="text/javascript">
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if(typeof require === 'function') {
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require.config({
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baseUrl : '../../../Source',
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waitSeconds : 120
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});
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}
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</script>
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</head>
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<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
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<style>
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@import url(../templates/bucket.css);
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#toolbar {
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background: rgba(42, 42, 42, 0.8);
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padding: 4px;
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border-radius: 4px;
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}
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#toolbar input {
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vertical-align: middle;
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padding-top: 2px;
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padding-bottom: 2px;
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}
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#toolbar .header {
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font-weight: bold;
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}
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</style>
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<div id="cesiumContainer" class="fullSize"></div>
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<div id="loadingOverlay"><h1>Loading...</h1></div>
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<div id="toolbar">
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<table>
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<tbody>
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<tr>
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<td>Rate</td>
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<td>
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<input type="range" min="0.0" max="100.0" step="1" data-bind="value: emissionRate, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: emissionRate">
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</td>
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</tr>
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<tr>
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<td>Size</td>
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<td>
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<input type="range" min="2" max="60.0" step="1" data-bind="value: particleSize, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: particleSize">
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</td>
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</tr>
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<tr>
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<td>Min Life</td>
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<td>
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<input type="range" min="0.1" max="30.0" step="1" data-bind="value: minimumParticleLife, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: minimumParticleLife">
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</td>
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</tr>
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<tr>
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<td>Max Life</td>
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<td>
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<input type="range" min="0.1" max="30.0" step="1" data-bind="value: maximumParticleLife, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: maximumParticleLife">
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</td>
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</tr>
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<tr>
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<td>Min Speed</td>
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<td>
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<input type="range" min="0.0" max="30.0" step="1" data-bind="value: minimumSpeed, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: minimumSpeed">
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</td>
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</tr>
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<tr>
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<td>Max Speed</td>
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<td>
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<input type="range" min="0.0" max="30.0" step="1" data-bind="value: maximumSpeed, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: maximumSpeed">
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</td>
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</tr>
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<tr>
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<td>Start Scale</td>
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<td>
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<input type="range" min="0.0" max="10.0" step="1" data-bind="value: startScale, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: startScale">
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</td>
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</tr>
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<tr>
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<td>End Scale</td>
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<td>
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<input type="range" min="0.0" max="10.0" step="1" data-bind="value: endScale, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: endScale">
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</td>
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</tr>
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<tr>
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<td>Gravity</td>
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<td>
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<input type="range" min="-20.0" max="20.0" step="1" data-bind="value: gravity, valueUpdate: 'input'">
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<input type="text" size="5" data-bind="value: gravity">
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<script id="cesium_sandcastle_script">
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function startup(Cesium) {
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'use strict';
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//Sandcastle_Begin
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var viewer = new Cesium.Viewer('cesiumContainer');
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//Set the random number seed for consistent results.
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Cesium.Math.setRandomNumberSeed(3);
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//Set bounds of our simulation time
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var start = Cesium.JulianDate.fromDate(new Date(2015, 2, 25, 16));
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var stop = Cesium.JulianDate.addSeconds(start, 120, new Cesium.JulianDate());
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//Make sure viewer is at the desired time.
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viewer.clock.startTime = start.clone();
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viewer.clock.stopTime = stop.clone();
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viewer.clock.currentTime = start.clone();
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viewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP; //Loop at the end
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viewer.clock.multiplier = 1;
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viewer.clock.shouldAnimate = true;
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//Set timeline to simulation bounds
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viewer.timeline.zoomTo(start, stop);
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var viewModel = {
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emissionRate : 5.0,
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gravity : 0.0,
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minimumParticleLife : 1.2,
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maximumParticleLife : 1.2,
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minimumSpeed : 1.0,
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maximumSpeed : 4.0,
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startScale : 1.0,
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endScale : 5.0,
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particleSize : 25.0
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};
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Cesium.knockout.track(viewModel);
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var toolbar = document.getElementById('toolbar');
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Cesium.knockout.applyBindings(viewModel, toolbar);
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var entityPosition = new Cesium.Cartesian3();
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var entityOrientation = new Cesium.Quaternion();
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var rotationMatrix = new Cesium.Matrix3();
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var modelMatrix = new Cesium.Matrix4();
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function computeModelMatrix(entity, time) {
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return entity.computeModelMatrix(time, new Cesium.Matrix4());
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}
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var emitterModelMatrix = new Cesium.Matrix4();
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var translation = new Cesium.Cartesian3();
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var rotation = new Cesium.Quaternion();
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var hpr = new Cesium.HeadingPitchRoll();
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var trs = new Cesium.TranslationRotationScale();
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function computeEmitterModelMatrix() {
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hpr = Cesium.HeadingPitchRoll.fromDegrees(0.0, 0.0, 0.0, hpr);
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trs.translation = Cesium.Cartesian3.fromElements(-4.0, 0.0, 1.4, translation);
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trs.rotation = Cesium.Quaternion.fromHeadingPitchRoll(hpr, rotation);
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return Cesium.Matrix4.fromTranslationRotationScale(trs, emitterModelMatrix);
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}
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var pos1 = Cesium.Cartesian3.fromDegrees(-75.15787310614596, 39.97862668312678);
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var pos2 = Cesium.Cartesian3.fromDegrees(-75.1633691390455, 39.95355089912078);
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var position = new Cesium.SampledPositionProperty();
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position.addSample(start, pos1);
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position.addSample(stop, pos2);
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var entity = viewer.entities.add({
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availability : new Cesium.TimeIntervalCollection([new Cesium.TimeInterval({
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start : start,
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stop : stop
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})]),
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model : {
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uri : '../../SampleData/models/CesiumMilkTruck/CesiumMilkTruck-kmc.glb',
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minimumPixelSize : 64
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},
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viewFrom: new Cesium.Cartesian3(-100.0, 0.0, 100.0),
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position : position,
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orientation : new Cesium.VelocityOrientationProperty(position)
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});
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viewer.trackedEntity = entity;
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var scene = viewer.scene;
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var particleSystem = scene.primitives.add(new Cesium.ParticleSystem({
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image : '../../SampleData/smoke.png',
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startColor : Cesium.Color.LIGHTSEAGREEN.withAlpha(0.7),
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endColor : Cesium.Color.WHITE.withAlpha(0.0),
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startScale : viewModel.startScale,
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endScale : viewModel.endScale,
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minimumParticleLife : viewModel.minimumParticleLife,
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maximumParticleLife : viewModel.maximumParticleLife,
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minimumSpeed : viewModel.minimumSpeed,
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maximumSpeed : viewModel.maximumSpeed,
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imageSize : new Cesium.Cartesian2(viewModel.particleSize, viewModel.particleSize),
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emissionRate : viewModel.emissionRate,
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bursts : [
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// these burst will occasionally sync to create a multicolored effect
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new Cesium.ParticleBurst({time : 5.0, minimum : 10, maximum : 100}),
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new Cesium.ParticleBurst({time : 10.0, minimum : 50, maximum : 100}),
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new Cesium.ParticleBurst({time : 15.0, minimum : 200, maximum : 300})
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],
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lifetime : 16.0,
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emitter : new Cesium.CircleEmitter(2.0),
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emitterModelMatrix : computeEmitterModelMatrix(),
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updateCallback : applyGravity
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}));
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var gravityScratch = new Cesium.Cartesian3();
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function applyGravity(p, dt) {
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// We need to compute a local up vector for each particle in geocentric space.
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var position = p.position;
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Cesium.Cartesian3.normalize(position, gravityScratch);
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Cesium.Cartesian3.multiplyByScalar(gravityScratch, viewModel.gravity * dt, gravityScratch);
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p.velocity = Cesium.Cartesian3.add(p.velocity, gravityScratch, p.velocity);
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}
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viewer.scene.preUpdate.addEventListener(function(scene, time) {
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particleSystem.modelMatrix = computeModelMatrix(entity, time);
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// Account for any changes to the emitter model matrix.
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particleSystem.emitterModelMatrix = computeEmitterModelMatrix();
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// Spin the emitter if enabled.
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if (viewModel.spin) {
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viewModel.heading += 1.0;
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viewModel.pitch += 1.0;
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viewModel.roll += 1.0;
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}
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});
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Cesium.knockout.getObservable(viewModel, 'emissionRate').subscribe(
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function(newValue) {
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particleSystem.emissionRate = parseFloat(newValue);
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}
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);
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Cesium.knockout.getObservable(viewModel, 'particleSize').subscribe(
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function(newValue) {
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var particleSize = parseFloat(newValue);
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particleSystem.minimumImageSize.x = particleSize;
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particleSystem.minimumImageSize.y = particleSize;
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particleSystem.maximumImageSize.x = particleSize;
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particleSystem.maximumImageSize.y = particleSize;
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}
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);
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Cesium.knockout.getObservable(viewModel, 'minimumParticleLife').subscribe(
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function(newValue) {
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particleSystem.minimumParticleLife = parseFloat(newValue);
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}
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);
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Cesium.knockout.getObservable(viewModel, 'maximumParticleLife').subscribe(
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function(newValue) {
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particleSystem.maximumParticleLife = parseFloat(newValue);
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}
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);
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Cesium.knockout.getObservable(viewModel, 'minimumSpeed').subscribe(
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function(newValue) {
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particleSystem.minimumSpeed = parseFloat(newValue);
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}
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);
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Cesium.knockout.getObservable(viewModel, 'maximumSpeed').subscribe(
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function(newValue) {
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particleSystem.maximumSpeed = parseFloat(newValue);
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}
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);
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Cesium.knockout.getObservable(viewModel, 'startScale').subscribe(
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function(newValue) {
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particleSystem.startScale = parseFloat(newValue);
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}
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);
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Cesium.knockout.getObservable(viewModel, 'endScale').subscribe(
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function(newValue) {
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particleSystem.endScale = parseFloat(newValue);
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}
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);
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var options = [{
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text : 'Circle Emitter',
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onselect : function() {
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particleSystem.emitter = new Cesium.CircleEmitter(2.0);
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}
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}, {
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text : 'Sphere Emitter',
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onselect : function() {
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particleSystem.emitter = new Cesium.SphereEmitter(2.5);
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}
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}, {
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text : 'Cone Emitter',
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onselect : function() {
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particleSystem.emitter = new Cesium.ConeEmitter(Cesium.Math.toRadians(45.0));
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}
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}, {
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text : 'Box Emitter',
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onselect : function() {
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particleSystem.emitter = new Cesium.BoxEmitter(new Cesium.Cartesian3(10.0, 10.0, 10.0));
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}
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}];
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Sandcastle.addToolbarMenu(options);
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//Sandcastle_End
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Sandcastle.finishedLoading();
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}
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if (typeof Cesium !== 'undefined') {
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startup(Cesium);
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} else if (typeof require === 'function') {
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require(['Cesium'], startup);
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}
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</script>
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</body>
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</html>
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