<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link href='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/Widgets/widgets.css' rel='stylesheet' />
<script src='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/bigemap-gl.js'></script>
<script src='./templates/bmgl-header.js'></script>
</head>
<style>
* {
margin: 0;
padding: 0;
}
#container {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
#toolbar {
position: absolute;
background: rgba(212, 212, 212, 0.8);
padding: 4px;
border-radius: 4px;
}
#toolbar input {
vertical-align: middle;
padding-top: 2px;
padding-bottom: 2px;
}
#toolbar .header {
font-weight: bold;
}
</style>
<body>
<div id="container"></div>
<div id="loadingOverlay">
<h1>Loading...</h1>
</div>
<div id="toolbar">
<table>
<tbody>
<tr>
<td>烟雾速率</td>
<td>
<input type="range" min="0.0" max="100.0" step="1"
data-bind="value: emissionRate, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: emissionRate">
</td>
</tr>
<tr>
<td>烟雾尺寸大小</td>
<td>
<input type="range" min="2" max="60.0" step="1"
data-bind="value: particleSize, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: particleSize">
</td>
</tr>
<tr>
<td>最小存在时间</td>
<td>
<input type="range" min="0.1" max="30.0" step="1"
data-bind="value: minimumParticleLife, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: minimumParticleLife">
</td>
</tr>
<tr>
<td>最大存在时间</td>
<td>
<input type="range" min="0.1" max="30.0" step="1"
data-bind="value: maximumParticleLife, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: maximumParticleLife">
</td>
</tr>
<tr>
<td>最小速率</td>
<td>
<input type="range" min="0.0" max="30.0" step="1"
data-bind="value: minimumSpeed, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: minimumSpeed">
</td>
</tr>
<tr>
<td>最大速率</td>
<td>
<input type="range" min="0.0" max="30.0" step="1"
data-bind="value: maximumSpeed, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: maximumSpeed">
</td>
</tr>
<tr>
<td>开始的大小</td>
<td>
<input type="range" min="0.0" max="10.0" step="1"
data-bind="value: startScale, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: startScale">
</td>
</tr>
<tr>
<td>结束时的大小</td>
<td>
<input type="range" min="0.0" max="10.0" step="1"
data-bind="value: endScale, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: endScale">
</td>
</tr>
<tr>
<td>重力</td>
<td>
<input type="range" min="-20.0" max="20.0" step="1"
data-bind="value: gravity, valueUpdate: 'input'">
<input type="text" size="5" data-bind="value: gravity">
</td>
</tr>
</tbody>
</table>
</div>
</body>
<script>
bmgl.Config.HTTP_URL = 'http://bigemap.com:9000';
var viewer = new bmgl.Viewer('container', {
timeline: true,
fullscreenButton: true,
mapId: 'bigemap.zhongkexingtu',
});
bmgl.Math.setRandomNumberSeed(3);
//添加时间控件
//Set bounds of our simulation time
var start = bmgl.JulianDate.fromDate(new Date(2015, 2, 25, 16));
var stop = bmgl.JulianDate.addSeconds(
start,
120,
new bmgl.JulianDate()
);
//Make sure viewer is at the desired time.
viewer.clock.startTime = start.clone();
viewer.clock.stopTime = stop.clone();
viewer.clock.currentTime = start.clone();
viewer.clock.clockRange = bmgl.ClockRange.LOOP_STOP; //Loop at the end
viewer.clock.multiplier = 1;
viewer.clock.shouldAnimate = true;
//Set timeline to simulation bounds
viewer.timeline.zoomTo(start, stop);
//绑定数据
var viewModel = {
emissionRate: 5.0,
gravity: 0.0,
minimumParticleLife: 1.2,
maximumParticleLife: 1.2,
minimumSpeed: 1.0,
maximumSpeed: 4.0,
startScale: 1.0,
endScale: 5.0,
particleSize: 25.0,
};
bmgl.knockout.track(viewModel);
var toolbar = document.getElementById("toolbar");
bmgl.knockout.applyBindings(viewModel, toolbar);
var entityPosition = new bmgl.Cartesian3();
var entityOrientation = new bmgl.Quaternion();
var rotationMatrix = new bmgl.Matrix3();
var modelMatrix = new bmgl.Matrix4();
function computeModelMatrix(entity, time) {
return entity.computeModelMatrix(time, new bmgl.Matrix4());
}
var emitterModelMatrix = new bmgl.Matrix4();
var translation = new bmgl.Cartesian3();
var rotation = new bmgl.Quaternion();
var hpr = new bmgl.HeadingPitchRoll();
var trs = new bmgl.TranslationRotationScale();
function computeEmitterModelMatrix() {
hpr = bmgl.HeadingPitchRoll.fromDegrees(0.0, 0.0, 0.0, hpr);
trs.translation = bmgl.Cartesian3.fromElements(
-4.0,
0.0,
1.4,
translation
);
trs.rotation = bmgl.Quaternion.fromHeadingPitchRoll(hpr, rotation);
return bmgl.Matrix4.fromTranslationRotationScale(
trs,
emitterModelMatrix
);
}
var pos1 = bmgl.Cartesian3.fromDegrees(
-75.15787310614596,
39.97862668312678
);
var pos2 = bmgl.Cartesian3.fromDegrees(
-75.1633691390455,
39.95355089912078
);
var position = new bmgl.SampledPositionProperty();
position.addSample(start, pos1);
position.addSample(stop, pos2);
var entity = viewer.entities.add({
availability: new bmgl.TimeIntervalCollection([
new bmgl.TimeInterval({
start: start,
stop: stop,
}),
]),
model: {
uri: "/templates/glb/bmglMilkTruck.glb",
minimumPixelSize: 64,
},
viewFrom: new bmgl.Cartesian3(-100.0, 0.0, 100.0),
position: position,
orientation: new bmgl.VelocityOrientationProperty(position),
});
viewer.trackedEntity = entity;
var scene = viewer.scene;
var particleSystem = scene.primitives.add(
new bmgl.ParticleSystem({
image: "/templates/img/smoke.png",
startColor: bmgl.Color.LIGHTSEAGREEN.withAlpha(0.7),
endColor: bmgl.Color.WHITE.withAlpha(0.0),
startScale: viewModel.startScale,
endScale: viewModel.endScale,
minimumParticleLife: viewModel.minimumParticleLife,
maximumParticleLife: viewModel.maximumParticleLife,
minimumSpeed: viewModel.minimumSpeed,
maximumSpeed: viewModel.maximumSpeed,
imageSize: new bmgl.Cartesian2(
viewModel.particleSize,
viewModel.particleSize
),
emissionRate: viewModel.emissionRate,
bursts: [
// these burst will occasionally sync to create a multicolored effect
new bmgl.ParticleBurst({
time: 5.0,
minimum: 10,
maximum: 100,
}),
new bmgl.ParticleBurst({
time: 10.0,
minimum: 50,
maximum: 100,
}),
new bmgl.ParticleBurst({
time: 15.0,
minimum: 200,
maximum: 300,
}),
],
lifetime: 16.0,
emitter: new bmgl.CircleEmitter(2.0),
emitterModelMatrix: computeEmitterModelMatrix(),
updateCallback: applyGravity,
})
);
var gravityScratch = new bmgl.Cartesian3();
function applyGravity(p, dt) {
// We need to compute a local up vector for each particle in geocentric space.
var position = p.position;
bmgl.Cartesian3.normalize(position, gravityScratch);
bmgl.Cartesian3.multiplyByScalar(
gravityScratch,
viewModel.gravity * dt,
gravityScratch
);
p.velocity = bmgl.Cartesian3.add(
p.velocity,
gravityScratch,
p.velocity
);
}
viewer.scene.preUpdate.addEventListener(function (scene, time) {
particleSystem.modelMatrix = computeModelMatrix(entity, time);
// Account for any changes to the emitter model matrix.
particleSystem.emitterModelMatrix = computeEmitterModelMatrix();
// Spin the emitter if enabled.
if (viewModel.spin) {
viewModel.heading += 1.0;
viewModel.pitch += 1.0;
viewModel.roll += 1.0;
}
});
bmgl.knockout
.getObservable(viewModel, "emissionRate")
.subscribe(function (newValue) {
particleSystem.emissionRate = parseFloat(newValue);
});
bmgl.knockout
.getObservable(viewModel, "particleSize")
.subscribe(function (newValue) {
var particleSize = parseFloat(newValue);
particleSystem.minimumImageSize.x = particleSize;
particleSystem.minimumImageSize.y = particleSize;
particleSystem.maximumImageSize.x = particleSize;
particleSystem.maximumImageSize.y = particleSize;
});
bmgl.knockout
.getObservable(viewModel, "minimumParticleLife")
.subscribe(function (newValue) {
particleSystem.minimumParticleLife = parseFloat(newValue);
});
bmgl.knockout
.getObservable(viewModel, "maximumParticleLife")
.subscribe(function (newValue) {
particleSystem.maximumParticleLife = parseFloat(newValue);
});
bmgl.knockout
.getObservable(viewModel, "minimumSpeed")
.subscribe(function (newValue) {
particleSystem.minimumSpeed = parseFloat(newValue);
});
bmgl.knockout
.getObservable(viewModel, "maximumSpeed")
.subscribe(function (newValue) {
particleSystem.maximumSpeed = parseFloat(newValue);
});
bmgl.knockout
.getObservable(viewModel, "startScale")
.subscribe(function (newValue) {
particleSystem.startScale = parseFloat(newValue);
});
bmgl.knockout
.getObservable(viewModel, "endScale")
.subscribe(function (newValue) {
particleSystem.endScale = parseFloat(newValue);
});
var options = [
{
text: "Circle Emitter",
onselect: function () {
particleSystem.emitter = new bmgl.CircleEmitter(2.0);
},
},
{
text: "Sphere Emitter",
onselect: function () {
particleSystem.emitter = new bmgl.SphereEmitter(2.5);
},
},
{
text: "Cone Emitter",
onselect: function () {
particleSystem.emitter = new bmgl.ConeEmitter(
bmgl.Math.toRadians(45.0)
);
},
},
{
text: "Box Emitter",
onselect: function () {
particleSystem.emitter = new bmgl.BoxEmitter(
new bmgl.Cartesian3(10.0, 10.0, 10.0)
);
},
},
];
Sandcastle.addToolbarMenu(options);
</script>
</html>
源码