我决定不从Babylonjs 基础来讲了 直接整合cesium与babylonjs可视化来讲
我整合一个类库 后续不断更新中
- npm i @haibalai/cesium-babylonjs
初始化cesium -babylonjs 类库， map 是cesium 的viewer对象
- import { BabylonMapManager } from "@haibalai/cesium-babylonjs";
- BabylonMapManager.init(map);
添加特效
- import { BabylonMapManager } from "@haibalai/cesium-babylonjs";
- const fragmentShader =`
- #ifdef GL_ES
- precision highp float;
- #endif
- #extension GL_OES_standard_derivatives : enable
- uniform float time;
- uniform vec2 mouse;
- vec2 resolution = vec2(1.0,1.0);
- varying vec2 vUv;
- floatsnow(vec2 uv,float scale)
- {
- float _t = time * 0.35;
- uv.x+=_t/scale;
- uv*=scale;vec2 s=floor(uv),f=fract(uv),p;float k=0.5,d;
- p=.5+.35*sin(11.*fract(sin((s+p+scale)*mat2(7,3,6,5))*5.))-f;d=length(p);k=min(d,k);
- k=smoothstep(0.0008,k,sin(f.x+f.y)*0.003);
- return k;
- }
- voidmain(void){
- vec2 uv = (vUv -0.5) * 2.0 ;
- float dd = 1.0-length(uv);
- uv.x += sin(time*0.48);
- uv.y += sin(uv.x*-1.4)*0.2;
- uv.x *= 0.09;
- float c=snow(uv,30.)*.3;
Cesium 与 Babylon.js 可视化 glsl 特效篇（三十九） － 小专栏
标签：glsl,uv,float,js,cesium,vec2,Cesium,babylonjs,sin From： https://www.cnblogs.com/haibalai/p/17219814.html