线条伸展动画背景效果-html代码-BFW代码库

线条伸展动画背景效果

代码语言：html

所属分类：背景

代码描述：线条伸展动画背景效果

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>

<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 translate="no">


<script >
"use strict";

/* As I am beginning this pen, my idea is to imitate
              Electric Field Lines (https://codepen.io/EpicCoder_2002/pen/KERjgm)
              by Ahmed Eltaher (https://codepen.io/EpicCoder_2002)
              */

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

  const AVG_SURFACE = 10000; // pixels²
  const RADIUS = 2;
  const COLOR_POS = '#ff0000';
  const COLOR_NEG = '#0000ff';
  const PART_MIN = 10; // min number of particles starting from each positive source
  const PART_MAX = 50; // max number of particles starting from each positive source
  const SPEED_ANIM = 1;
  const SPEED_PART = 1;

  let canv, ctx; // canvas and context

  let maxx, maxy; // canvas dimensions

  let nbPos, nbNeg;
  let arrPos, arrNeg;
  let particles;
  let nbPart;

  // for animation
  let tStampRef; // time stamp ref for animation
  let events;

  // shortcuts for Math.
  const mrandom = Math.random;
  const mfloor = Math.floor;
  const mround = Math.rou.........完整代码请登录后点击上方下载按钮下载查看