Arcgis 与 Claygl 可视化 glsl 特效篇（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 = `
 constfloat ratio = 1.0;
 float PI = 3.1415926;
 uniform float iTime;
 const vec2 iResolution = vec2(1.0,1.0);
 varying vec2 vUv;
 vec2 rotate(vec2 p, float rad) {
 mat2 m = mat2(cos(rad), sin(rad), -sin(rad), cos(rad));
 return m * p;
 }
 vec2 translate(vec2 p, vec2 diff) {
 return p - diff;
 }
 vec2 scale(vec2 p, float r) {
 return p*r;
 }
 floatcircle(float pre, vec2 p, float r1, float r2, float power) {
 float leng = length§;
 float d = min(abs(leng-r1), abs(leng-r2));
 if (r1<leng && leng<r2) pre /= exp(d)/r2;
 float res = power / d;
 return clamp(pre + res, 0.0, 1.0);
 }
 floatrectangle(float pre, vec2 p, vec2 half1, vec2 half2, float power) {
 p = abs§;
 if ((half1.x<p.x || half1.y<p.y) && (p.x<half2.x && p.y<half2.y)) {
 pre = max(0.01, pre);
 }
 float dx1 = (p.y < half1.y) ? abs(half1.x-p.x) : length(p-half1);
 float dx2 = (p.y < half2.y) ? abs(half2.x-p.x) : length(p-half2);
 float dy1 = (p.x < half1.x) ? abs(half1.y-p.y) : length(p-half1);
 float dy2 = (p.x < half2.x) ? abs(half2.y-p.y) : length(p-half2);
 float d = min(min(dx1, dx2), min(dy1, dy2));
 Arcgis 与 Claygl 可视化 glsl 特效篇（七） － 小专栏