js实现鼠标点击星际穿越时空穿梭动画效果代码-html代码-BFW代码库

js实现鼠标点击星际穿越时空穿梭动画效果代码

代码语言：html

所属分类：动画

代码描述：js实现鼠标点击星际穿越时空穿梭动画效果代码

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 { background-color: hsl(256, 100%, 5%); font: 30px sans-serif; }
canvas { position: absolute; }
</style>


</head>

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

  
      <script >
var PARTICLE_NUM = 500;
var PARTICLE_BASE_RADIUS = 0.5;
var FL = 500;
var DEFAULT_SPEED = 2;
var BOOST_SPEED = 300;

var canvas;
var canvasWidth, canvasHeight;
var context;
var centerX, centerY;
var mouseX, mouseY;
var speed = DEFAULT_SPEED;
var targetSpeed = DEFAULT_SPEED;
var particles = [];

window.addEventListener('load', function () {
  canvas = document.getElementById('c');

  var resize = function () {
    canvasWidth = canvas.width = window.innerWidth;
    canvasHeight = canvas.height = window.innerHeight;
    centerX = canvasWidth * 0.5;
    centerY = canvasHeight * 0.5;
    context = canvas.getContext('2d');
    context.fillStyle = 'rgb(255, 255, 255)';
  };

  document.addEventListener('resize', resize);
  resize();

  mouseX = centerX;
  mouseY = centerY;

  for (var i = 0, p; i < PARTICLE_NUM; i++) {
    particles[i] = randomizeParticle(new Particle());
    particles[i].z -= 500 * Math.random();
  }

  document.addEventListener('mousemove', function (e) {
    mouseX = e.clientX;
    mouseY = e.clientY;
  }, false);

  document.addEventListener('mousedown', function (e) {
    targetSpeed = BOOST_SPEED;
  }, false);

  document.addEventListener('mouseup', function (d) {
    targetSpeed = DEFAULT_SPEED;
.........完整代码请登录后点击上方下载按钮下载查看