Arcgis 与 Claygl 可视化 glsl 特效篇（三十七）

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 =#ifdef GL_ES precision highp float; #endif #extension GL_OES_standard_derivatives : enable uniform float time; uniform vec2 mouse; vec2 resolution = vec2(1.0,1.0); varying vec2 vUv; floatsnow(vec2 uv,float scale) { float _t = time * 0.35; uv.x+=_t/scale; uv*=scale;vec2 s=floor(uv),f=fract(uv),p;float k=0.5,d; p=.5+.35*sin(11.*fract(sin((s+p+scale)*mat2(7,3,6,5))*5.))-f;d=length(p);k=min(d,k); k=smoothstep(0.0008,k,sin(f.x+f.y)*0.003); return k; } voidmain(void){ vec2 uv = (vUv -0.5) * 2.0 ; float dd = 1.0-length(uv); uv.x += sin(time*0.48); uv.y += sin(uv.x*-1.4)*0.2; uv.x *= 0.09; float c=snow(uv,30.)*.3; c+=snow(uv,25.)*.5; c+=snow(uv,35.)*.8; c+=snow(uv,10.); c+=snow(uv,20.); c+=snow(uv,8.); c+=snow(uv,10.); c*=0.2/dd; vec3 finalColor=(vec3(1,0.5,3.2))*c*100.0; gl_FragColor = vec4(finalColor,1.); } const vertexShader = `
attribute vec3 position: POSITION;
uniform mat4 worldViewProjection : WORLDVIEWPROJECTION;
attribute vec2 uv : TEXCOORD_0;
Arcgis 与 Claygl 可视化 glsl 特效篇（三十七） － 小专栏