canvas粒子运动动画效果代码-html代码-BFW代码库

canvas粒子运动动画效果代码

代码语言：html

所属分类：粒子

代码描述：canvas粒子运动动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <style>
        html,body{background-color:black;text-align:center}
    </style>
</head>

<body><canvas id="display"></canvas>
    <script>
        var width = 640;
 var height = 480;
 var vbuf;
 var pstart;
 var nump;
 var canvasElement;
 var gl;
 window.onload = function() {
     canvasElement = document.getElementById("display");
     canvasElement.width = width;
     canvasElement.height = height;
     gl = canvasElement.getContext("webgl");
     if (!gl) {
         gl = canvasElement.getContext("experimental-webgl");
         if (!gl) {
             alert("WebGL not supported!")
         }
     }
     nump = 48000;
     pstart = new Float32Array(nump * 2);
     var b = pstart.length;
     while (b--) {
         pstart[b] = 0;
         while (pstart[b] * pstart[b] < 0.3) {
             pstart[b] = Math.random() * 2 - 1
         }
     }
     vbuf = gl.createBuffer();
     gl.bindBuffer(gl.ARRAY_BUFFER, vbuf);
     gl.bufferData(gl.ARRAY_BUFFER, pstart, gl.STATIC_DRAW);
     var e = gl.createShader(gl.VERTEX_SHADER);
     gl.shaderSource(e, "\nprecision mediump float;attribute vec2 Vertex; varying vec2 V; uniform float T;void main(void) {gl_PointSize = .........完整代码请登录后点击上方下载按钮下载查看