Arcgis 与 Claygl 可视化 glsl 特效篇（四十六）

我决定不从claygl基础来讲了 直接整合arcgis与claygl可视化来讲
关于整合clagyl 有兴趣看我这篇文章 arcgis 与 claygl 引擎结合做地图可视化

我整合一个类库 后续不断更新中

npm i @haibalai/gismap4-claygl

初始化gismap4-claygl 类库， view是arcgis的sceneView对象

import { ClayglMapManager} from “@haibalai/gismap4-claygl”;
ClayglMapManager.init(view);

添加特效

import { ClayglMapManager} from “@haibalai/gismap4-claygl”;
 import * as clay from “claygl”;
 const fragmentShader =
 `
 precision highp float;
 uniform float time; // time
 vec2 resolution = vec2(1.0,1.0);
 varying vec2 vUv;
 vec2 rotateTo(vec2 point, float rad){
 float x = sin(rad) * point.x - cos(rad) * point.y;
 float y = sin(rad) * point.y + cos(rad) * point.x;
 return vec2(x,y);
 }
 floatrand(float co) { return fract(sin(co*(91.3458)) * 47453.5453); }
 floattrail(float r) {
 vec2 p = (vUv - 0.5);
 float t = rand® * time;
 vec2 s = rotateTo(p, -t);
 float head = clamp(0.05 - length( p-rotateTo(vec2(0,r),t) ),0.,1.) * 10.;
 float tail = (clamp(0.006 / abs(length§ - r )-0.1,0.0,2.)) ;
 float tailStrength = clamp(atan(s.x,s.y)-1.5+r,0.,1.);
 return head + tail * tailStrength;
 }
 voidmain(void){

Arcgis 与 Claygl 可视化 glsl 特效篇（四十六） － 小专栏