victor实现六边形窝峰激光线条运动动画效果代码-html代码-BFW代码库

victor实现六边形窝峰激光线条运动动画效果代码

代码语言：html

所属分类：动画

代码描述：victor实现六边形窝峰激光线条运动动画效果代码

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">
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/normalize.css">
<style>
    html, body {
  overflow: hidden;
}
canvas {
  background: radial-gradient(#2A2A2A, #111);
}
</style>
</head>
<body>

<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/victor.1.1.0.js"></script>
  <script >
      /**
 * JS for Hexocet
 * 
 * @author Alexandre Andrieux
 * @since 2017-01-05
 */

var Hexocet = {
  seeds: [],
  stepCount: 0,
  birthPeriod: 1,
  hexSize: 25,
  targetBounceChance: 0.15,
  springStiffness: 0.1,
  viscosity: 0.7,
  particleOpacity: 0.8,
  fade: true,
  fadeLayerOpacity: 0.15
};
Hexocet.setupCanvas = function() {
  // Initialize own canvas
	var canvas = document.createElement('canvas');
	canvas.id = 'hexocet';
	canvas.width = window.innerWidth;
	canvas.height = window.innerHeight;
	document.body.appendChild(canvas);

  // Get and store canvas context
	this.canvas = document.getElementById(canvas.id);
	this.ctx = this.canvas.getContext('2d');
  
  // Scale parameter
  this.canvasBase = Math.min(this.canvas.width, this.canvas.height);
  // Central point coordinates
  this.xC = this.canvas.width / 2;
  this.yC = this.canvas.height / 2;
};
Hexocet.hexCoordsToXY = function(Hx, Hy) {
  // Hx and Hy are integers corresponding to vertices coordinates in Hex space
  var xPrime, yPrime, XYprime, X, Y, XY;
  var isSumEven = ( (parseInt(Hx) + parseInt(Hy)) % 2 == 0 ? 1 : 0);
  xPrime = 1 * Hx;
  yPrime = 1 /Math.sqrt(3) * (3*Hy + 1 + isSumEven);
  
  XYprime = new Victor(xPrime * this.hexSize, yPrime * this.hexSize);
  XY = XYprime.clone().rotateDeg(30);
  
  return { x: XY.x, y: XY.y };
};
Hexocet.XYtoHexCoords = function(x, y) {
  // Approximate
  var XYprime = new Victor(x / this.hexSize, y / this.hexSize).rotateDeg(-30);
  var Hx = XYprime.x,
      Hy = Math.sqrt(3) * XYprime.y/3;
  return { Hx: Math.floor(Hx), Hy: Math.floor(Hy) };
};
Hexocet.update = function() {
  this.stepCount++;
  
  // Birthrate management
	if (this.stepCount % this.birthPeriod == 0 && this.stepCount < 60000) {
    this.birth();
  }
  
  this.move();
  this.draw();
};
Hexocet.birth = function(xBirth, yBirth, seed) {
  // Give birth around the canvas center
  var targetH = this.XYtoHexCoords(xBirth || this.xC, yBirth || this.yC);
  // I said AROUND
  var spreadArea = 1;
  targetH.Hx += Math.floor(spreadArea * (-0.5 + Math.random()));
  targetH.Hy += Math.floor(spreadArea * (-0.5 + Math.random()));
  // Convert in Cartesian coords
  var targetXY = this.hexCoordsToXY(targetH.Hx, targetH.Hy);
  
  var seed = seed || {
    xLast: targetXY.x,
    x: targetXY.x,
    xSpeed: 0,
    yLast: targetXY.y,
    y: targetXY.y,
    ySpeed: 0,
    targetHx: targetH.Hx,
    targetHy: targetH.Hy,
    age: 0,
    hue: 120 + 50 * Math.sin(this.stepCount / 50)
  };
  this.seeds.push(seed);
};
Hexocet.move = function() {
  // Move all particles
  for (var i = 0; i < this.seeds.length; i++) {
    var seed = this.seeds[i];
    // Get older
    seed.age++;
    // Save last position
    seed.xLast = seed.x;
    seed.yLast = seed.y;
    
    // Randomly change target
    if (Math.random() < this.targetBounceChance) {
      // Either move Hx or Hy, twice more likely to change Hx
      if (Math.random() > 0.33) {
        // Move Hx
        seed.targetHx += (Math.random() > 0.5 ? 1 : -1);
      } else {
        // Increase Hy + Hx is even
        if ((seed.targetHx + seed.targetHy) % 2 == 0.........完整代码请登录后点击上方下载按钮下载查看