Cesium 与 Babylon.js 可视化 glsl 特效篇（二十七）
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 = `
- uniform float iTime;
- uniform vec2 iResolution;
- varying vec2 vUv;
- #define USE_LIGHT 0
- mat3 m = mat3( 0.00, 0.80, 0.60,
- -0.80, 0.36, -0.48,
- -0.60, -0.48, 0.64);
- floathash(float n)
- {
- return fract(sin(n) * 43758.5453);
- }
- ///
- /// Noise function
- ///
- floatnoise(in vec3 x)
- {
- vec3 p = floor(x);
- vec3 f = fract(x);
- f = f * f * (3.0 - 2.0 * f);
- float n = p.x + p.y * 57.0 + 113.0 * p.z;
- float res = mix(mix(mix(hash(n + 0.0), hash(n + 1.0), f.x),
- mix(hash(n + 57.0), hash(n + 58.0), f.x), f.y),
- mix(mix(hash(n + 113.0), hash(n + 114.0), f.x),
- mix(hash(n + 170.0), hash(n + 171.0), f.x), f.y), f.z);
- return res;
- }
- ///
- /// Fractal Brownian motion.
- ///
- /// Refer to:
- /// EN: https://thebookofshaders.com/13/
- /// JP: https://thebookofshaders.com/13/?lan=jp
- ///
- floatfbm(vec3 p)
- {
- float f;
- f = 0.5000 * noise(p); p = m * p * 2.02;
