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 vUv;
- voidmain(void) {
- vec2 p = (vUv - 0.5 ) * 2.0;
- // vec2 p = (2.0*fragCoord-iResolution.xy)/min(iResolution.y,iResolution.x);
- // background color
- vec3 bcol = vec3(1.0,0.8,0.7-0.07*p.y)*(1.0-0.25*length(p));
- // animate
- float tt = mod(iTime,1.5)/1.5;
- float ss = pow(tt,.2)*0.5 + 0.5;
- ss = 1.0 + ss*0.5*sin(tt*6.2831*3.0 + p.y*0.5)*exp(-tt*4.0);
- p *= vec2(0.5,1.5) + ss*vec2(0.5,-0.5);
- // shape
- #if 0
- p *= 0.8;
- p.y = -0.1 - p.y*1.2 + abs(p.x)*(1.0-abs(p.x));
- float r = length(p);
- float d = 0.5;
- #else
- p.y -= 0.25;
- float a = atan(p.x,p.y)/3.141593;
- float r = length(p);
- float h = abs(a);
- float d = (13.0*h - 22.0*h*h + 10.0*h*h*h)/(6.0-5.0*h);
- #endif
- // color
- float s = 0.75 + 0.75*p.x;
- s *= 1.0-0.4*r;
- s = 0.3 + 0.7*s;
- s *= 0.5+0.5*pow( 1.0-clamp(r/d, 0.0, 1.0 ), 0.1 );
- vec3 hcol = vec3(1.0,0.4*r,0.3)*s;