jquery实现火山喷发动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：jquery实现火山喷发动画效果代码

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>
html,
body {
  height: 100%;
  padding: 0;
  margin: 0;
  overflow: hidden;
  font-family: Helvetica, Arial;
  color: #ffffff;
}

body {
  background: linear-gradient(0deg, #aabbbb, #88aadd);
}

#stage, #smoke {
  position: absolute;
  top: 0;
  left: 0;
}

#stage {
  z-index: 20;
}

#smoke {
  z-index: 5;
}

.volcano-container {
  z-index: 10;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}

.volcano {
  position: absolute;
  border: 380px solid transparent;
  border-left: 140px solid transparent;
  border-bottom: 200px solid #240904;
  width: 0;
  height: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}
.volcano.flipped {
  transform: scaleX(-1);
}

.lip {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  width: 300px;
  height: 240px;
  background-color: #240904;
  border-radius: 200px;
}
.lip .lava {
  position: absolute;
  left: 0;
  right: 0;
  top: 10px;
  margin: auto;
  width: 270px;
  height: 230px;
  background-color: #fa7510;
  border-radius: 200px;
  clip-path: ellipse(120px 60px at top);
}
.lip .mask {
  position: absolute;
  top: 80px;
  left: 0;
  right: 0;
  margin: auto;
  background-color: #240904;
  width: 290px;
  height: 300px;
}

.toggle {
  display: none;
  z-index: 100;
  position: absolute;
  top: 10px;
  left: 10px;
}
</style>



</head>

<body >
  <canvas id="smoke"></canvas>
<canvas id="stage"></canvas>

<div class="volcano-container">
  <div class="volcano"></div>
  <div class="volcano flipped"></div>
  <div class="lip">
    <div class="lava"></div>
    <div class="mask"></div>
  </div>
</div>

<div class="toggle">
  <label for="awesome">
    <input type="checkbox" id="awesome" /> <strong>AWESOME MODE</strong>
  </label>
</div>


<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>
      <script  >
// Best viewed in Chrome

//=============================
// Consts
//=============================
const MAX_WIDTH = 12;
const FPS = 60;

//=============================
// Helpers
//=============================
const getTimestamp = () => {
  return new Date().getTime();
};

const random = (max = 1, signed = false) => {
  return signed ? (Math.random() - 0.5) * 2 * max : Math.random() * max;
};

const getPower = () => {
  const power = (getTimestamp() - mouseStart) / 150;
  return power > 30 ? 30 : power;
};

const shakeVolcano = power => {
  $volcano.css({
    left: random(power, true),
    bottom: -1 * random(power) });


  $lava.css({
    left: random(power, true),
    top: 10 + random(power) / 2,
    width: random(power) + 260 });

};

//=============================
// Main
//=============================
const targetDelta = 1000 / FPS;

const stage = document.getElementById('stage');
const ctx = stage.getContext('2d');
const smoke = document.getElementById('smoke');
const ctx2 = smoke.getContext('2d');

let particles = [];

let AWESOME_MODE = false;
let mouseDown = false;
let isExploding = false;
let stageWidth = 0;
let stageHeight = 0;
let previousTimestamp = getTimestamp();
let previousRender = getTimestamp();
let previousPower = 0;
let mouseStart = getTimestamp();
let mouseEnd = getTimestamp();

let $volcano;
let $lava;

const generateParticles = (amount = 20, power) => {
  for (let i = 0; i < amount; i++) {
    particles.push(new Particle(power));
  }
};

const loop = () => {

  if (getTimestamp() - previousTimestamp < targetDelta) {
    requestAnimationFrame(loop);
    return;
  }

  ctx.globalCompositeOperation = 'lighter';

  if (!AWESOME_MODE) {
    ctx.clearRect(0, 0, stageWidth, stageHeight);
  }

  ctx2.clearRect(0, 0, stageWidth, stageHeight);

  if (mouseDown) {
    generateParticles(random(2) + 1, getPower() / 2);
    shakeVolcano(getPower());
  }

  if (isExploding && previousPower > 0 && !mouseDown) {
    shakeVolcano(previousPower);
    previousPower -= 0.35;

    if (previousPower < 1) {
      isExploding = false;
    }
  }

  // constant particles
  if (random() < 0.3) {
    generateParticles(1, 1);
  }

  // smoke effects
  if (random() < 0.08) {
    particles.push(new S.........完整代码请登录后点击上方下载按钮下载查看