anime实现canvas鼠标点击爆炸动画效果代码-html代码-BFW代码库

anime实现canvas鼠标点击爆炸动画效果代码

代码语言：html

所属分类：动画

代码描述：anime实现canvas鼠标点击爆炸动画效果代码

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>
canvas {
  display: block;
  width: 100vw;
  height: 100vh;
}
</style>

</head>

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

<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/anime-min.js"></script>
      <script  >
var c = document.getElementById("c");
var ctx = c.getContext("2d");
var cH;
var cW;
var bgColor = "#FF6138";
var animations = [];
var circles = [];

var colorPicker = (function() {
  var colors = ["#FF6138", "#FFBE53", "#2980B9", "#282741"];
  var index = 0;
  function next() {
    index = index++ < colors.length-1 ? index : 0;
    return colors[index];
  }
  function current() {
    return colors[index]
  }
  return {
    next: next,
    current: current
  }
})();

function removeAnimation(animation) {
  var index = animations.indexOf(animation);
  if (index > -1) animations.splice(index, 1);
}

function calcPageFillRadius(x, y) {
  var l = Math.max(x - 0, cW - x);
  var h = Math.max(y - 0, cH - y);
  return Math.sqrt(Math.pow(l, 2) + Math.pow(h, 2));
}

function addClickListeners() {
  document.addEventListener("touchstart", handleEvent);
  document.addEventListener("mousedown", handleEvent);
};

function handleEvent(e) {
    if (e.touches) { 
      e.preventDefault();
      e = e.touches[0];
    }
    var currentColor = colorPicker.current();
    var nextColor = colorPicker.next();
    var targetR = calcPageFillRadius(e.pageX, e.pageY);
    var rippleSize = Math.min(200, (cW * .4));
    var minCoverDuration = 750;
    
    var pageFill = new Circle({
      x: e.pageX,
      y: e.pageY,
      r: 0,
      fill: nextColor
    });
    var fillAnimation = anime({
      targets: pageFill,
      r: targetR,
      duration:  Math.max(targetR / 2 , minCoverDuration ),
      easing: "easeOutQuart",
      complete: function(){
        bgColor = pageFill.fill;
        removeAnimation(fillAnimation);
      }
    });
    
    var ripple = new Circle({
      x: e.pageX,
      y: e.pageY,
      r: 0,
      fill: currentColor,
      stroke: {
        width: 3,
        color: currentColor
      },
      opacity: 1
    });
    var rippleAnimation = anime({
      targets: ripple,
      r: rippleSize,
      opacity: 0,
      easing: "easeOutExpo",
      duration: 900,
      complete: removeAnimation
    });
    
    var particles = [];
    for (var i=0; i<32; i++) {
      var particle = new Circle({
        x: e.pageX,
        y: e.pageY,
        fill: currentColor,
        r: anime.random(24, 48)
      })
      particles.push(particle);
    }
    var particlesAnimation = anim.........完整代码请登录后点击上方下载按钮下载查看