canvas图形绘制动画效果代码-html代码-BFW代码库

canvas图形绘制动画效果代码

代码语言：html

所属分类：动画

代码描述：canvas图形绘制动画效果代码

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">
  

  
</head>

<body translate="no">
  
  
      <script >
"use strict"; // Paul Slaymaker, paul25882@gmail.com
const body = document.getElementsByTagName("body").item(0);
body.style.background = "#000";
const TP = 2 * Math.PI;
const CSIZE = 400;
const CSO = 52;

const ctx = (() => {
  let d = document.createElement("div");
  d.style.textAlign = "center";
  body.append(d);
  let c = document.createElement("canvas");
  c.width = c.height = 2 * CSIZE;
  d.append(c);
  return c.getContext("2d");
})();
ctx.setTransform(1, 0, 0, 1, CSIZE, CSIZE);

const ctxo = (() => {
  let c = document.createElement("canvas");
  c.width = c.height = 2 * CSO;
  return c.getContext("2d", { "willReadFrequently": true });
})();
ctxo.setTransform(1, 0, 0, 1, CSO, CSO);
ctxo.lineWidth = 1;

const ctxo2 = (() => {
  let c = document.createElement("canvas");
  c.width = c.height = 2 * CSO;
  return c.getContext("2d", { "willReadFrequently": true });
})();
ctxo2.setTransform(1, 0, 0, 1, CSO, CSO);

onresize = () => {
  let D = Math.min(window.innerWidth, window.innerHeight) - 40;
  ctx.canvas.style.width = ctx.canvas.style.height = D + ".........完整代码请登录后点击上方下载按钮下载查看