Arcgis 与 Pixi.js 可视化 glsl 特效篇（二十九）
这次我们用pixi.js和arcgis js结合
我们先定义一下 传入数据结构 symbol 暂时不做
- let option = {
- renderer: {
- type: "simple",
- symbol: {
- }
- },
- data: [
- {
- geometry: [12956152.73135875, 4855356.473704897],
- attributes: {
- name: "北京"
- }
- },
- {
- geometry: [12697872.012783196, 2577456.5937789795],
- attributes: {
- name: "深圳"
- }
- }
- ]
- };
对于data 数据 ,
toScreen 方法参考链接提示
app 的构建参考 链接提示
- let data = this.options.data;
- for(let item of data){
- //转换屏幕坐标，获取颜色，半径和线条粗细样式
- let geo = item.geometry
- let XY1 = toScreen(geo);
- const geometry = new PIXI.Geometry()
- .addAttribute("position", [100, 100, -100, 100, -100, -100, 100, -100, 200, 200], 2)
- .addAttribute('uv', // the attribute name
- [0, 0, // u, v
- 1, 0, // u, v
- 1, 1,
- 0, 1], // u, v
- 2)
- .addIndex([0, 1, 2, 0, 2, 3]);
- const fragmentShader = `
- uniform float iTime;
- const vec2 iResolution = vec2(1.0,1.0);
- varying vec2 vUv;
- float time;
- float hash( float n )
- {
- return fract(sin(n)*43758.5453);
- }
- float noise( in vec2 x )
- {
- vec2 p = floor(x);
- vec2 f = fract(x);
- f = f*f*(3.0-2.0*f);
- float n = p.x + p.y*57.0;
- float res = 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);
- return res;
- }
- float SmokeParticle(vec2 loc, vec2 pos, float size, float rnd)
- {
- loc = loc-pos;
- float d = dot(loc, loc)/size;
- if (d > 1.0) return 0.0;
- float r= time*rnd*1.85;
- float si = sin(r);
- float co = cos(r);
- d = noise(hash(rnd*828.0)*83.1+mat2(co, si, -si, co)*loc.xy*2./(pos.y*.16)) * pow((1.-d), 3.)*.7;
- return d;
- }
- float RockParticle(vec2 loc, vec2 pos, float size, float rnd)
- {
- loc = loc-pos;
- float d = dot(loc, loc)/size;
- if (d > 1.0) return 0.0;
- float r= time*1.5 * (rnd);
- float si = sin(r);
