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;
- uniform vec2 iResolution;
- varying vec2 vUv;
- float plasma(vec2 p, float iso, float fade)
- {
- float c = 0.0;
- for (float i=1.0; i<10.0; ++i) {
- float f1 = i / 0.6;
- float f2 = i / 0.3;
- float f3 = i / 0.7;
- float f4 = i / 0.5;
- float s1 = i / 2.0;
- float s2 = i / 4.0;
- float s3 = i / 3.0;
- c += sin(p.x * f1 + iTime) * s1 + sin(p.y * f2 + 0.5 * iTime) * s2 + sin(p.x * f3 + p.y * f4 - 1.5 * iTime) * s3;
- }
- //c = mod(clamp(c, -1.0, 1.0), 0.5) * 2.0;
- c = mod(c, 16.0) * 0.5
- Arcgis 与 Pixi.js 可视化 glsl 特效篇（十四） － 小专栏