canvas彩色线条绘制动画效果代码-html代码-BFW代码库

canvas彩色线条绘制动画效果代码

代码语言：html

所属分类：动画

代码描述：canvas彩色线条绘制动画效果代码

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">
  

  
  
  
<style>
body {
  font-family: Arial, Helvetica, "Liberation Sans", FreeSans, sans-serif;
  background-color: #000;
  margin:0;
  padding:0;
  border-width:0;
  cursor: pointer;
}
</style>



</head>

<body  >
  

  
      <script  >
"use strict";

/* You'll find the word Lissajous because at the origin, the x and y coordinates were not random numbers. 
*/
window.addEventListener("load", function () {

  const NBLISSAJOUS = 200;

  let canv, ctx; // canvas and context
  let maxx, maxy; // canvas dimensions
  let liss;

  // for animation
  let events;

  // shortcuts for Math.
  const mrandom = Math.random;
  const mfloor = Math.floor;
  const mround = Math.round;
  const mceil = Math.ceil;
  const mabs = Math.abs;
  const mmin = Math.min;
  const mmax = Math.max;

  const mPI = Math.PI;
  const mPIS2 = Math.PI / 2;
  const mPIS3 = Math.PI / 3;
  const m2PI = Math.PI * 2;
  const m2PIS3 = Math.PI * 2 / 3;
  const msin = Math.sin;
  const mcos = Math.cos;
  const matan2 = Math.atan2;

  const mhypot = Math.hypot;
  const msqrt = Math.sqrt;

  const rac3 = msqrt(3);
  const rac3s2 = rac3 / 2;

  //------------------------------------------------------------------------

  function alea(mini, maxi) {
    // random number in given range

    if (typeof maxi == 'undefined') return mini * mrandom(); // range 0..mini

    return mini + mrandom() * (maxi - mini); // range mini..maxi
  }
  // - .........完整代码请登录后点击上方下载按钮下载查看