2025-03-11 08:25:45 +00:00
|
|
|
|
<!--********************************************************************
|
|
|
|
|
|
* by jiawanlong
|
|
|
|
|
|
*********************************************************************-->
|
|
|
|
|
|
<!DOCTYPE html>
|
|
|
|
|
|
<html>
|
|
|
|
|
|
|
|
|
|
|
|
<head>
|
|
|
|
|
|
<meta charset="UTF-8" />
|
2025-03-19 03:00:22 +00:00
|
|
|
|
<link rel="stylesheet" href="./../../libs/cesium/Cesium1.98/Widgets/widgets.css">
|
|
|
|
|
|
<script type="text/javascript" src="./../../libs/cesium/Cesium1.98/Cesium.js"></script>
|
2025-03-11 08:25:45 +00:00
|
|
|
|
</head>
|
|
|
|
|
|
|
|
|
|
|
|
<body style="margin: 0; overflow: hidden; background: #fff; width: 100%; height: 100%; position: absolute; top: 0">
|
|
|
|
|
|
<div id="map" style="margin: 0 auto; width: 100%; height: 100%"></div>
|
|
|
|
|
|
|
|
|
|
|
|
<script type="text/javascript">
|
2025-05-29 02:59:44 +00:00
|
|
|
|
Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiIyNDMxOTA2NS1lY2Q3LTQ0YmUtOTE1Mi1iNWE2OGYwZjc0MjkiLCJpZCI6MjM1NjMwLCJpYXQiOjE3MzA3MjQzMTJ9.Xhu-9FyVEyqBKWEr0V9Sybt-elTCWHt9peL9-mNh-4E'
|
2025-03-11 08:25:45 +00:00
|
|
|
|
const viewer = new Cesium.Viewer('map', {});
|
|
|
|
|
|
viewer.scene.debugShowFramesPerSecond = true;
|
|
|
|
|
|
viewer.scene.globe.depthTestAgainstTerrain = true;
|
|
|
|
|
|
|
|
|
|
|
|
//喷雾特效
|
|
|
|
|
|
class sprayEffect {
|
|
|
|
|
|
constructor(viewer,obj) {
|
|
|
|
|
|
this.viewer = viewer
|
|
|
|
|
|
this.viewModel = {
|
|
|
|
|
|
emissionRate: 5,
|
|
|
|
|
|
gravity: 0.0,//设置重力参数
|
|
|
|
|
|
minimumParticleLife: 1,
|
|
|
|
|
|
maximumParticleLife: 6,
|
|
|
|
|
|
minimumSpeed: 1.0,//粒子发射的最小速度
|
|
|
|
|
|
maximumSpeed: 4.0,//粒子发射的最大速度
|
|
|
|
|
|
startScale: 0.0,
|
|
|
|
|
|
endScale: 10.0,
|
|
|
|
|
|
particleSize: 25.0,
|
|
|
|
|
|
}
|
|
|
|
|
|
this.emitterModelMatrix = new Cesium.Matrix4()
|
|
|
|
|
|
this.translation = new Cesium.Cartesian3()
|
|
|
|
|
|
this.rotation = new Cesium.Quaternion()
|
|
|
|
|
|
this.hpr = new Cesium.HeadingPitchRoll()
|
|
|
|
|
|
this.trs = new Cesium.TranslationRotationScale()
|
|
|
|
|
|
this.scene = this.viewer.scene
|
|
|
|
|
|
this.particleSystem = ''
|
|
|
|
|
|
this.entity = this.viewer.entities.add({
|
|
|
|
|
|
//选择粒子放置的坐标
|
|
|
|
|
|
position: Cesium.Cartesian3.fromDegrees(
|
|
|
|
|
|
obj.lng,obj.lat
|
|
|
|
|
|
),
|
|
|
|
|
|
});
|
|
|
|
|
|
this.init();
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
init() {
|
|
|
|
|
|
const _this = this
|
|
|
|
|
|
this.viewer.clock.shouldAnimate = true;
|
|
|
|
|
|
this.viewer.scene.globe.depthTestAgainstTerrain = false;
|
|
|
|
|
|
// this.viewer.trackedEntity = this.entity;
|
|
|
|
|
|
var particleSystem = this.scene.primitives.add(
|
|
|
|
|
|
new Cesium.ParticleSystem({
|
|
|
|
|
|
image: './fire.png',//生成所需粒子的图片路径
|
|
|
|
|
|
//粒子在生命周期开始时的颜色
|
|
|
|
|
|
startColor: Cesium.Color.RED.withAlpha(0.7),
|
|
|
|
|
|
//粒子在生命周期结束时的颜色
|
|
|
|
|
|
endColor: Cesium.Color.YELLOW.withAlpha(0.3),
|
|
|
|
|
|
//粒子在生命周期开始时初始比例
|
|
|
|
|
|
startScale: _this.viewModel.startScale,
|
|
|
|
|
|
//粒子在生命周期结束时比例
|
|
|
|
|
|
endScale: _this.viewModel.endScale,
|
|
|
|
|
|
//粒子发射的最小速度
|
|
|
|
|
|
minimumParticleLife: _this.viewModel.minimumParticleLife,
|
|
|
|
|
|
//粒子发射的最大速度
|
|
|
|
|
|
maximumParticleLife: _this.viewModel.maximumParticleLife,
|
|
|
|
|
|
//粒子质量的最小界限
|
|
|
|
|
|
minimumSpeed: _this.viewModel.minimumSpeed,
|
|
|
|
|
|
//粒子质量的最大界限
|
|
|
|
|
|
maximumSpeed: _this.viewModel.maximumSpeed,
|
|
|
|
|
|
//以像素为单位缩放粒子图像尺寸
|
|
|
|
|
|
imageSize: new Cesium.Cartesian2(
|
|
|
|
|
|
_this.viewModel.particleSize,
|
|
|
|
|
|
_this.viewModel.particleSize
|
|
|
|
|
|
),
|
|
|
|
|
|
//每秒发射的粒子数
|
|
|
|
|
|
emissionRate: _this.viewModel.emissionRate,
|
|
|
|
|
|
//粒子系统发射粒子的时间（秒）
|
|
|
|
|
|
lifetime: 16.0,
|
|
|
|
|
|
//设置粒子的大小是否以米或像素为单位
|
|
|
|
|
|
sizeInMeters: true,
|
|
|
|
|
|
//系统的粒子发射器
|
|
|
|
|
|
emitter: new Cesium.CircleEmitter(2.0),//BoxEmitter 盒形发射器，ConeEmitter 锥形发射器，SphereEmitter 球形发射器，CircleEmitter圆形发射器
|
|
|
|
|
|
//回调函数，实现各种喷泉、烟雾效果
|
|
|
|
|
|
updateCallback: (p, dt) => {
|
|
|
|
|
|
return this.applyGravity(p, dt);
|
|
|
|
|
|
},
|
|
|
|
|
|
})
|
|
|
|
|
|
);
|
|
|
|
|
|
this.particleSystem = particleSystem;
|
|
|
|
|
|
this.preUpdateEvent()
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//场景渲染事件
|
|
|
|
|
|
preUpdateEvent() {
|
|
|
|
|
|
let _this = this;
|
|
|
|
|
|
this.viewer.scene.preUpdate.addEventListener(function (scene, time) {
|
|
|
|
|
|
//发射器地理位置
|
|
|
|
|
|
_this.particleSystem.modelMatrix = _this.computeModelMatrix(_this.entity, time);
|
|
|
|
|
|
//发射器局部位置
|
|
|
|
|
|
_this.particleSystem.emitterModelMatrix = _this.computeEmitterModelMatrix();
|
|
|
|
|
|
// 将发射器旋转
|
|
|
|
|
|
if (_this.viewModel.spin) {
|
|
|
|
|
|
_this.viewModel.heading += 1.0;
|
|
|
|
|
|
_this.viewModel.pitch += 1.0;
|
|
|
|
|
|
_this.viewModel.roll += 1.0;
|
|
|
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
computeModelMatrix(entity, time) {
|
|
|
|
|
|
return entity.computeModelMatrix(time, new Cesium.Matrix4());
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
computeEmitterModelMatrix() {
|
|
|
|
|
|
this.hpr = Cesium.HeadingPitchRoll.fromDegrees(0.0, 0.0, 0.0, this.hpr);
|
|
|
|
|
|
this.trs.translation = Cesium.Cartesian3.fromElements(
|
|
|
|
|
|
-4.0,
|
|
|
|
|
|
0.0,
|
|
|
|
|
|
1.4,
|
|
|
|
|
|
this.translation
|
|
|
|
|
|
);
|
|
|
|
|
|
this.trs.rotation = Cesium.Quaternion.fromHeadingPitchRoll(this.hpr, this.rotation);
|
|
|
|
|
|
|
|
|
|
|
|
return Cesium.Matrix4.fromTranslationRotationScale(
|
|
|
|
|
|
this.trs,
|
|
|
|
|
|
this.emitterModelMatrix
|
|
|
|
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
applyGravity(p, dt) {
|
|
|
|
|
|
var gravityScratch = new Cesium.Cartesian3()
|
|
|
|
|
|
var position = p.position
|
|
|
|
|
|
Cesium.Cartesian3.normalize(position, gravityScratch)
|
|
|
|
|
|
Cesium.Cartesian3.fromElements(
|
|
|
|
|
|
20 * dt,
|
|
|
|
|
|
gravityScratch.y * dt,
|
|
|
|
|
|
-30 * dt,
|
|
|
|
|
|
gravityScratch
|
|
|
|
|
|
);
|
|
|
|
|
|
p.velocity = Cesium.Cartesian3.add(p.velocity, gravityScratch, p.velocity)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
removeEvent() {
|
|
|
|
|
|
this.viewer.scene.preUpdate.removeEventListener(this.preUpdateEvent, this);
|
|
|
|
|
|
this.emitterModelMatrix = undefined;
|
|
|
|
|
|
this.translation = undefined;
|
|
|
|
|
|
this.rotation = undefined;
|
|
|
|
|
|
this.hpr = undefined;
|
|
|
|
|
|
this.trs = undefined;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//移除粒子特效
|
|
|
|
|
|
remove() {
|
|
|
|
|
|
() => { return this.removeEvent() }; //清除事件
|
|
|
|
|
|
this.viewer.scene.primitives.remove(this.particleSystem); //删除粒子对象
|
|
|
|
|
|
this.viewer.entities.remove(this.entity); //删除entity
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
new sprayEffect(viewer,{
|
|
|
|
|
|
lng:-117.16,
|
|
|
|
|
|
lat:32.71
|
|
|
|
|
|
})
|
|
|
|
|
|
viewer.camera.setView({
|
|
|
|
|
|
destination: Cesium.Cartesian3.fromDegrees(-117.16, 32.71, 1500.0)
|
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
|
|
</script>
|
|
|
|
|
|
</body>
|
|
|
|
|
|
|
|
|
|
|
|
</html>
|
