Arcgis 与 Claygl 可视化 glsl 特效篇（三十四）

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 time;
• vec2 iResolution = vec2(1.0,1.0);
• varying vec2 vUv;
• #define AA 1
• #define HEIGHT 12.
• vec3 _col;
• #define iTime time
• #define PI 3.14159
• #define TAU 6.28318
• vec3 spunk(vec2 uv)
• {
• vec3 col = vec3(.55,0.35,1.225);
• uv.x += sin(0.2+uv.y*0.8)*0.5;
• uv.x = uv.x*50.0;
• float dx = fract(uv.x);
• uv.x = floor(uv.x);
• float t = iTime*0.4;
• uv.y *= 0.15;
• float o=sin(uv.x*215.4);
• float s=cos(uv.x*33.1)*.3 +.7;
• float trail = mix(95.0,35.0,s);
• float yv = fract(uv.y + t*s + o) * trail;
• yv = 1.0/yv;
• yv = smoothstep(0.0,1.0,yv*yv);
• yv = sin(yv*PI)*(s*5.0);
• float d2 = sin(dx*PI);
• yv *= d2*d2;
• col = col*yv;
• return col;
• }
• voidmain(void)
• {
• float an = sin(iTime*64564.8);
• //float dist = 36.0+sin(iTime)*7.0;
• float dist = 200.0;
• vec3 ro = vec3( dist*cos(an), sin(iTime*0.75)*14.0, dist*sin(an) );
• vec3 ta = vec3( 0.0, 0.0, 0.0 );
• // camera matrix
• vec3 ww = normalize( ta - ro );
• vec3 uu = normalize( cross(ww,vec3(0.0,1.0,0.0) ) );
• vec3 vv = normalize( cross(uu,ww));
• vec3 tot = vec3(0.0);
• vec2 ppp = (-iResolution.xy + 2.*(gl_FragCoord.xy))/iResolution.y;
• vec3 bbk = spunk(vUv.xy);
• //vec2 p = (-iResolution.xy + 2.0*gl_FragCoord.xy)/iResolution.y;
• vec2 p = (vUv -0.5) * 2.0 ;

Arcgis 与 Claygl 可视化 glsl 特效篇（三十四） － 小专栏