宇宙行星公转粒子效果-html代码-BFW代码库

代码语言：html

所属分类：粒子

代码描述：宇宙行星公转粒子效果

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: #d8e8e3;
  font-family: Trebuchet MS,Lucida Grande,Lucida Sans Unicode,Lucida Sans,Tahoma, sans-serif;
  padding: 200px 20px 800px;
  max-width: 600px;
  margin: auto;
}

.screen-reader {
  clip: rect(1px, 1px, 1px, 1px);
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
}
.screen-reader:focus {
  background-color: #ddd;
  border-radius: 3px;
  box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
  clip: auto !important;
  color: #444;
  display: block;
  font-size: 1.2rem;
  font-weight: bold;
  height: auto;
  left: 5px;
  line-height: normal;
  padding: 15px 23px 14px;
  text-decoration: none;
  top: 5px;
  width: auto;
  z-index: 100000;
  /* Above WP toolbar. */
}

#field,
.field-info-container {
  background: #eee;
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  margin: auto;
  top: 250px;
  left: 40%;
}

.field-info-container {
  position: absolute;
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: center;
          justify-content: center;
  -webkit-box-align: center;
          align-items: center;
  text-align: center;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
          flex-direction: column;
  background: #fff;
  box-shadow: 0 1px 15px rgba(255, 255, 255, 0.8);
  z-index: 5;
  top: 0;
  left: 0;
}
.field-info-container:after, .field-info-container:before {
  display: block;
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  border: 2px solid #fff;
  border-radius: 50%;
}
.field-info-container:before {
  width: 350%;
  height: 350%;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.ball {
  position: absolute;
  border-radius: 50%;
  width: 10px;
  height: 10px;
  background: #0ebeff;
}

button {
  float: left;
  border: none;
  background: #fff;
  width: 50px;
  height: 50px;
  font-size: 20px;
  font-weight: bold;
  border-radius: 50%;
  cursor: pointer;
  color: #0ebeff;
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: center;
          justify-content: center;
  -webkit-box-align: center;
          align-items: center;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
          flex-direction: row;
  margin-right: 10px;
  -webkit-transition: all .15s ease-out;
  transition: all .15s ease-out;
}
button:hover {
  -webkit-transform: scale(1.15);
          transform: scale(1.15);
}

.decrease-pull {
  margin-top: 4px;
  width: 42px;
  height: 42px;
}
.decrease-pull:hover {
  -webkit-transform: scale(0.9);
          transform: scale(0.9);
}

button:hover,
button:focus {
  outline: none;
  box-shadow: 0 0 2px #0ebeff;
}

.current-pull {
  font-size: 40px;
  position: relative;
}

.percentage-sign {
  font-size: 15px;
  position: absolute;
  top: 5px;
}

.gravity-form {
  position: relative;
  z-index: 99;
}

button:disabled {
  color: #ccc;
  opacity: 0.7;
}
</style>

</head>
<body translate="no">
<form class="gravity-form">
<span class="screen-reader">Set Pull</span>
<button type="button" id="decrease-pull" class="decrease-pull"><span class="screen-reader">Decrease Pull</span>-</button>
<button type="button" id="increase-pull" class="increase-pull"><span class="screen-reader">Increase Pull</span>+</button>
</form>
<div id="field">
<div id="balls"></div>
<div class="field-info-container" aria-live="polite">
<div class="field-info">
<h3>Current Pull</h3>
<p class="current-pull">
<span id="current-gravity"></span>
<span class="percentage-sign">%</span>
</p>
</div>
</div>
</div>

<script>
// Original JavaScript code by Chirp Internet: www.chirp.com.au
// Please acknowledge use of this code by including this header.
// Modified very, very heavily by Jeremy Jones: https://jeremyjon.es
const numberOfBalls = 80;
const minSize = 4;
const maxSize = 18;
const colors = [
'#0ebeff',
'#0ebeff', // I want more of the blue ones
'#59C9A5',
'#EDCA04'];


class Orbit {
  constructor() {
    this.field = document.getElementById('field');
    this.ballsEl = document.getElementById('balls');
    this.gravitationalPull = 50;

    this.gravityText = document.getElementById('current-gravity');
    this.increasePullBtn = document.getElementById('increase-pull');
    this.decreasePullBtn = document.getElementById('decrease-pull');
    this.balls = null;

    this.ballSettings = {
      num: numberOfBalls,
      minSize: minSize,
      maxSize: maxSize };


    this.start = 0;

    this.init(40);
  }

  init(ballsNum) {
    this.balls = this.createBalls(ballsNum);
    window.requestAnimationFrame(this.step.bind(this));
    this.setPullButtons(this.gravitationalPull);
    this.increasePullBtn.addEventListener('click', this.increaseGravitationalPull.bind(this));
    this.decreasePullBtn.addEventListener('click', this.decreaseGravitationalPull.bind(this));


    // uncomment to have planet track cursor
    // document.onmousemove = getCursorXY;

  }

  createBalls() {
    let size;
    for (let i = 0; i < this.ballSettings.num; i++) {
      // get random size between setting sizes
      size = Math.ceil(this.ballSettings.minSize + Math.random() * (this.ballSettings.maxSize - this.ballSettings.minSize));
      this.createBall(size);
    }

    // return all the balls
.........完整代码请登录后点击上方下载按钮下载查看