jquery实现鱼跳出水面动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：jquery实现鱼跳出水面动画效果代码

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

<html lang="en"><head>

  <meta charset="UTF-8">
  

  
  
  
<style>
html, body{
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
.container{
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: #FFFFFF;
}
</style>




</head>

<body>
  <div id="jsi-flying-fish-container" class="container"></div>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>
      <script>
var RENDERER = {
  POINT_INTERVAL: 5,
  FISH_COUNT: 3,
  MAX_INTERVAL_COUNT: 50,
  INIT_HEIGHT_RATE: 0.5,
  THRESHOLD: 50,

  init: function () {
    this.setParameters();
    this.reconstructMethods();
    this.setup();
    this.bindEvent();
    this.render();
  },
  setParameters: function () {
    this.$window = $(window);
    this.$container = $('#jsi-flying-fish-container');
    this.$canvas = $('<canvas />');
    this.context = this.$canvas.appendTo(this.$container).get(0).getContext('2d');
    this.points = [];
    this.fishes = [];
    this.watchIds = [];
  },
  createSurfacePoints: function () {
    var count = Math.round(this.width / this.POINT_INTERVAL);
    this.pointInterval = this.width / (count - 1);
    this.points.push(new SURFACE_POINT(this, 0));

    for (var i = 1; i < count; i++) {
      var point = new SURFACE_POINT(this, i * this.pointInterval),
      previous = this.points[i - 1];

      point.setPreviousPoint(previous);
      previous.setNextPoint(point);
      this.points.push(point);
    }
  },
  reconstructMethods: function () {
    this.watchWindowSize = this.watchWindowSize.bind(this);
    this.jdugeToStopResize = this.jdugeToStopResize.bind(this);
    this.startEpicenter = this.startEpicenter.bind(this);
    this.moveEpicenter = this.moveEpicenter.bind(this);
    this.reverseVertical = this.reverseVertical.bind(this);
    this.render = this.render.bind(this);
  },
  setup: function () {
    this.points.length = 0;
    this.fishes.length = 0;
    this.watchIds.length = 0;
    this.intervalCount = this.MAX_INTERVAL_COUNT;
    this.width = this.$container.width();
    this.height = this.$container.height();
    this.fishCount = this.FISH_COUNT * this.width / 500 * this.height / 500;
    this.$canvas.attr({ width: this.width, height: this.height });
    this.reverse = false;

    this.fishes.push(new FISH(this));
    this.createSurfacePoints();
  },
  watchWindowSize: function () {
    this.clearTimer();
    this.tmpWidth = this.$window.width();
    this.tmpHeight = this.$window.height();
    this.watchIds.push(setTimeout(this.jdugeToStopResize, this.WATCH_INTERVAL));
  },
  clearTimer: function () {
    while (this.watchIds.length > 0) {
      clearTimeout(this.watchIds.pop());
    }
  },
  jdugeToStopResize: function () {
    var width = this.$window.width(),
    height = this.$window.height(),
    stopped = width == this.tmpWidth && height == this.tmpHeight;

    this.tmpWidth = width;
    this.tmpHeight = height;

    if (stopped) {
      this.setup();
    }
  },
  bindEvent: function () {
    this.$window.on('resize', this.watchWindowSize);
    this.$container.on('mouseenter', this.startEpicenter);
    this.$container.on('mousemove', this.moveEpicenter);
    this.$container.on('click', this.reverseVertical);
  },
  getAxis: function (event) {
    var offset = this.$container.offset();

    return {
      x: event.clientX - offset.left + this.$window.scrollLeft(),
      y: event.clientY - offset.top + this.$window.scrollTop() };

  },
  startEpicenter: function (event) {
    this.axis = this.getAxis(event);
  },
  moveEpicenter: function (event) {
    var axis = this.getAxis(event);

    if (!this.axis) {
      this.axis = axis;
    }
    this.generateEpicenter(axis.x, axis.y, axis.y - this.axis.y);
    this.axis = axis;
  },
  generateEpicenter: function (x, y, velocity) {
    if (y < this.height / 2 - this.THRESHOLD || y > this.height / 2 + this.THRESHOLD) {
      return;
    }
    var index = Math.round(x / this.pointInterval);

    if (index < 0 || index >= this.points.length) {
      return;
    }
    this.points[index].interfere(y, velocity);
  },
  reverseVertical: function () {
    this.reverse = !this.reverse;

    for (var i = 0, count = this.fishes.length; i < count; i++) {
      this.fishes[i].reverseVertical();
    }
  },
  controlStatus: function () {
    for (var i = 0, count = this.points.length; i < count; i++) {
      this.points[i].updateSelf();
    }
    for (var i = 0, count = this.points.length; i < count; i++) {
      this.points[i].updateNeighbors();
    }
    if (this.fishes.length < this.fishCount) {
      if (--this.intervalCount == 0) {
        this.intervalCount = this.MAX_INTERVAL_COUNT;
        this.fishes.push(new FISH(this));
      }
    }
  },
  render: function () {
    requestAnimationFrame(this.render);
    this.controlStatus();
    this.context.clearRect(0, 0, this.width, this.height);
    this.context.fillStyle = 'hsl(0, 0%, 0%)';

    for (var i = 0, count = this.fishes.length; i < count; i++) {
      this.fishes[i].render(this.context);
    }
    this.context.save();
    this.context.globalCompositeOperation = 'xor';
    this.context.beginPath();
    this.context.moveTo(0, this.reverse ? 0 : this.height);

    for (var i = 0, count = this.points.le.........完整代码请登录后点击上方下载按钮下载查看