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This project is some demos of CESIUM. Much of them are from other people's blogs and cesium's official website (https://cesiumjs.org/tutorials/cesium-up-and-running/). Thanks to my good friend MikesWei (https://github.com/MikesWei) for giving me great help.

CSS 0.21% JavaScript 90.21% HTML 9.58%
cesium cesium-demo

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cesium.hpuzyz.demo's Issues

对风向图代码有点疑惑

hi,学习了你的代码,收获很多,对Windy.js有几个疑惑,望指点一二:
1。randomParticle方法中的

do {
x = Math.floor(Math.random() * (this.windField.cols - 2));
y = Math.floor(Math.random() * (this.windField.rows - 2));
} while (this.windField.getIn(x, y)[2] <= 0 && safe++ < 30);
这个do while循环是否有必要?粒子对象是想获得场网格的row和col的index吧

2。WindField.js的
_calcUV: function (u, v) {
return [+u, +v, Math.sqrt(u * u + v * v)];
},
我理解的u是json数据中的第一组值,v是json数据中的第二组值,这个算法的意义是什么?
望指点!万分感谢!

CesiumVectorTile插件使用

您好,感谢分享。我看您矢量切片工具demo中,是通过引入插件的编译文件CesiumVectorTile.min.js完成的。我按照您的方法,最后报错:
Uncaught ReferenceError: VectorTileImageryProvider is not defined

我想请问我的问题出在哪里?应该如何改正?
我使用的版本是 cesium-1.87.1源码版,源码太大不方便上传,我把需要写的demo压缩传上来。
demo是文件夹demops下的vectorTile.html。希望得到您的回复,谢谢!
demops.zip

distance 函数到底从哪里来的

Tools-16PrimitivePoints.js

"varying vec4 v_color;
void main()
{
float d = distance(gl_PointCoord, vec2(0.5,0.5));
if(d < 0.5){
gl_FragColor = v_color;
}else{
discard;
}
}
";

找了半天没有找到这个 distance 到底从哪里来的

Cesium 如何做到多个地形开挖

使用clippingPlanes是否只能进行一次地形开挖?项目上会有需求对多个地方的地形都需要开挖,这样要如何实现呢?

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