Mapbox 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mapbox与babylonjs可视化来讲

我整合一个类库 后续不断更新中

• npm i @haibalai/mapbox-babylonjs

初始化mapbox-babylonjs 类库， map 是mapbox.gl 的map 对象

• import { BabylonMapManager } from "@haibalai/mapbox-babylonjs";
• BabylonMapManager.init(map);

添加特效

• import { BabylonMapManager } from "@haibalai/mapbox-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 - 2.0*B + 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 * (2.0*dot(a,a)+dot(d,b)) / 3.0;
• float kz = kk * dot(d,a);