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(p);
- 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(p);
- 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));
