Cesium 与 Babylon.js 可视化 glsl 特效篇（三十）

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;
 const vec2 iResolution = vec2(1.0,1.0);
 varying vec2 vUv;
 #define POINT_COUNT 8
 vec2 points[POINT_COUNT];
 constfloat speed = -0.5;
 constfloat len = 0.25;
 constfloat scale = 0.012;
 float intensity = 1.3;
 float radius = 0.015;
 //https://www.shadertoy.com/view/MlKcDD
 //Signed distance to a quadratic bezier
 floatsdBezier(vec2 pos, vec2 A, vec2 B, vec2 C){
 vec2 a = B - A;
 vec2 b = A - 2.0B + C;
 vec2 c = a * 2.0;
 vec2 d = A - pos;
 float kk = 1.0 / dot(b,b);
 float kx = kk * dot(a,b);
 float ky = kk * (2.0dot(a,a)+dot(d,b)) / 3.0;
 float kz = kk * dot(d,a);
 float res = 0.0;
 float p = ky - kxkx;
 float p3 = ppp;
 float q = kx(2.0kxkx - 3.0ky) + kz;
 float h = qq + 4.0*p3;

Cesium 与 Babylon.js 可视化 glsl 特效篇（三十） － 小专栏