canvas多彩胶囊背景效果代码-html代码-BFW代码库

canvas多彩胶囊背景效果代码

代码语言：html

所属分类：背景

代码描述：canvas多彩胶囊背景效果代码

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;
}
canvas {
  cursor: pointer;
}
</style>




</head>

<body translate="no" >
  <!-- click to draw a new pattern -->

  
  
      <script>
"use strict";

window.addEventListener("load", function () {

  //  const BARWIDTH = 5; // Width of bars
  const MARGIN = 1; // distance between adjacent bars
  //  const GRIDSTEP = BARWIDTH + MARGIN;
  const MINWIDTH = 5; // for BARWIDTH
  const MAXWIDTH = 50;

  let BARWIDTH, GRIDSTEP;

  let canv, ctx; // canvas and context 
  let maxx, maxy; // canvas sizes (in pixels)

  let nbx, nby, posX, posY;
  let grid, bars;
  let colorMode = 0,globalHue;
  let firstRun = true;

  // 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 m2PI = Math.PI * 2;
  const msin = Math.sin;
  const mcos = Math.cos;
  const matan2 = Math.atan2;
  const mtan = Math.tan;

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

  const rac3 = msqrt(3);
  const rac3s2 = rac3 / 2;
  const mPIS3 = Math.PI / 3;

  //-----------------------------------------------------------------------------
  function alea(min, max) {
    // random number [min..max[ . If no max is provided, [0..min[

    if (typeof max == 'undefined') return min * mrandom();
    return min + (max - min) * mrandom();
  }

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

  function intAlea(min, max).........完整代码请登录后点击上方下载按钮下载查看