canvas实现线条波纹起伏波动动画效果代码-html代码-BFW代码库

canvas实现线条波纹起伏波动动画效果代码

代码语言：html

所属分类：动画

代码描述：canvas实现线条波纹起伏波动动画效果代码

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>
body {
margin:0;
overflow:hidden;
background:black;
}
</style>

</head>


  <body>
<canvas id = "cs">
</canvas>

  
      <script>
//The code below creates a simulation of waves
var parts = [];
var waves = [];
var can = document.getElementById("cs");
var ctx = can.getContext("2d");
can.width = window.innerWidth;
can.height = window.innerHeight;
function randFrom(min, max) {
  //This function selects a random   decimal number from the minimum to the maximum value 
  return Math.random() * (max - min) + min;
}
function randBet(c1, c2) {
  //This function picks a random item between choice 1 and choice 2
  var nArr = [c1, c2];
  return nArr[Math.floor(Math.random() * 2)];
}
function Wave(period, amp, waveL, dir) {
  //This is an object function for creating a Wave with attributes of: period,amplitude,wavelength and direction, all in terms of pixels
  this.phase = 0;
  if (dir == "left") {
    var dirVal = 1;
  } else if (dir == "right") {
    var dirVal = -1;
  }
  this.applyTo = function (points) {
    //This sub-function applies the wave properties to a list of points
    for (var i = 0; i < points.length; i++) {
      var initPhase = 2 * Math.PI * points[i].x / waveL;
      points[i].y += amp * Math.sin(this.phase + initPhase * dirVal);
.........完整代码请登录后点击上方下载按钮下载查看