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 = `
- uniform float iTime;
- const vec2 iResolution = vec2(1.0,1.0);
- varying vec2 iMouse;
- varying vec2 vUv;
- floatCircle(vec2 uv, vec2 pos, float r){
- float d = length(uv - pos);
- return r / d;
- }
- floatrandom(vec2 p)
- {
- return fract(sin(dot(vec2(100.,324.), p)) * 22141.);
- }
- voidmain(void) {
- // vc - voronoi coords, mc - metaballs coords
- vec2 vc = (vUv - 0.5) * 2.0;
- vec2 mc = vc ;
- vc.x *= iResolution.x/iResolution.y;
- mc.x *= iResolution.x/iResolution.y;
- // voronoi
- vc *= 9.;
- vec2 i = floor(vc);
- vec2 gv = fract(vc) - .5;
- float minDist = 1.;
- for(float y = -1.; y <= 1.; y++)
- {
- for(float x = -1.; x <= 1.; x++)
- {
- vec2 o = vec2(x,y);
- vec2 rp = vec2(random(i + o.xy), random(i + o.xy));
- vec2 p = o + sin(rp * iTime) * .5;
- float d = length(gv - p);
- if(d < minDist){
- minDist = d;
- }
- }
- }
- vec3 col = vec3(.5,.75,1.5) * minDist;
- // metaballs
- float r = .05;
- float c = Circle(mc, vec2(sin(iTime * 2.) * .4, cos(iTime * .4) * .4), r);
- c += Circle(mc, vec2(sin(iTime * .5) * .4, cos(iTime * .7) * .4), r);
- c += Circle(mc, vec2(sin(iTime * .7) * .4, cos(iTime * .8) * .4), r);