js 3D旋转木马特效插件

这是一款js 3D旋转木马特效插件。该插件通过CSS3和纯js来完成，可在中以3D旋转的方式来展示一组图片。

使用方法

HTML结构

<div id="drag-container">
  <div id="spin-container">
  <img src="images/pexels-photo-206395.jpeg" alt="">
  <img src="images/pexels-photo-1391498.jpeg" alt="">
  <img src="images/pexels-photo-1382731.jpeg" alt="">
  <img src="images/pexels-photo-1758144.jpeg" alt="">
  <img src="images/pexels-photo-1382734.jpeg" alt="">
  <img src="images/pexels-photo-1462636.jpeg" alt="">

  <a target="_blank" href="images/pexels-photo-139829.jpeg">
    <img src="images/pexels-photo-139829.jpeg" alt="">
  </a>

  <video controls autoplay="autoplay" loop>
    <source src="" type="video/mp4">
  </video>

  <p>3D Tiktok Carousel</p>
  </div>
  <div id="ground"></div>
</div>
<div id="music-container"></div>
                

CSS样式

* {
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  overflow: hidden;
  display: flex;
  background: #111;
  perspective: 1000px;
  transform-style: preserve-3d;
}

#drag-container, #spin-container {
  position: relative;
  display: flex;
  margin: auto;
  transform-style: preserve-3d;
  transform: rotateX(-10deg);
}

#drag-container img, #drag-container video {
  transform-style: preserve-3d;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  line-height: 200px;
  font-size: 50px;
  text-align: center;
  box-shadow: 0 0 8px #fff;
  -webkit-box-reflect: below 10px linear-gradient(transparent, transparent, #0005);
}

#drag-container img:hover, #drag-container video:hover {
  box-shadow: 0 0 15px #fffd;
  -webkit-box-reflect: below 10px linear-gradient(transparent, transparent, #0007);
}

#drag-container p {
  font-family: Serif;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%,-50%) rotateX(90deg);
  color: #fff;
}

#ground {
  width: 900px;
  height: 900px;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%,-50%) rotateX(90deg);
  background: -webkit-radial-gradient(center center, farthest-side , #9993, transparent);
}

#music-container {
  position: absolute;
  top: 0;
  left: 0;
}

#carousel-container {
  width: 100%;
  height: 100%;
}

@keyframes spin {
  from{
    transform: rotateY(0deg);
  } to{
    transform: rotateY(360deg);
  }
}
@keyframes spinRevert {
  from{
    transform: rotateY(360deg);
  } to{
    transform: rotateY(0deg);
  }
}
                

JavaScript

var radius = 240; 
var autoRotate = true; 
var rotateSpeed = -60; 
var imgWidth = 120; 
var imgHeight = 170; 

var bgMusicURL = '';
var bgMusicControls = true; 

// ===================== start =======================
setTimeout(init, 100);

var obox = document.getElementById('drag-container');
var ospin = document.getElementById('spin-container');
var aImg = ospin.getElementsByTagName('img');
var aVid = ospin.getElementsByTagName('video');
var aEle = [...aImg, ...aVid]; 

ospin.style.width = imgWidth + "px";
ospin.style.height = imgHeight + "px";

var ground = document.getElementById('ground');
ground.style.width = radius * 3 + "px";
ground.style.height = radius * 3 + "px";

function init(delayTime) {
  for (var i = 0; i < aEle.length; i++) {
    aEle[i].style.transform = "rotateY(" + (i * (360 / aEle.length)) + "deg) translateZ(" + radius + "px)";
    aEle[i].style.transition = "transform 1s";
    aEle[i].style.transitionDelay = delayTime || (aEle.length - i) / 4 + "s";
  }
}

function applyTranform(obj) {
  if(tY > 180) tY = 180;
  if(tY < 0) tY = 0;

  obj.style.transform = "rotateX(" + (-tY) + "deg) rotateY(" + (tX) + "deg)";
}

function playSpin(yes) {
  ospin.style.animationPlayState = (yes?'running':'paused');
}

var sX, sY, nX, nY, desX = 0,
    desY = 0,
    tX = 0,
    tY = 10;

if (autoRotate) {
  var animationName = (rotateSpeed > 0 ? 'spin' : 'spinRevert');
  ospin.style.animation = `${animationName} ${Math.abs(rotateSpeed)}s infinite linear`;
}

if (bgMusicURL) {
  document.getElementById('music-container').innerHTML += `
<audio src="${bgMusicURL}" ${bgMusicControls? 'controls': ''} autoplay loop>    
<p>If you are reading this, it is because your browser does not support the audio element.</p>
</audio>
`;
}

if (mobilecheck()) {
  // ==================== Touch Events ====================
  document.ontouchstart = function(e) {
    clearInterval(obox.timer);
    e = e || window.event;
    var sX = e.touches[0].clientX,
        sY = e.touches[0].clientY;

    this.ontouchmove = function(e) {
      e = e || window.event;
      var nX = e.touches[0].clientX,
          nY = e.touches[0].clientY;
      desX = nX - sX;
      desY = nY - sY;
      tX += desX * 0.1;
      tY += desY * 0.1;
      applyTranform(obox);
      sX = nX;
      sY = nY;
    }

    this.ontouchend = function(e) {
      this.ontouchmove = this.ontouchend = null;
      obox.timer = setInterval(function() {
        desX *= 0.95;
        desY *= 0.95;
        tX += desX * 0.1;
        tY += desY * 0.1;
        applyTranform(obox);
        playSpin(false);
        if (Math.abs(desX) < 0.5 && Math.abs(desY) < 0.5) {
          clearInterval(obox.timer);
          playSpin(true);
        }
      }, 17);
    }

    // return false;
  }
} else {
  // ==================== Mouse Events ====================
  document.onmousedown = function(e) {
    clearInterval(obox.timer);
    e = e || window.event;
    var sX = e.clientX,
        sY = e.clientY;

    this.onmousemove = function(e) {
      e = e || window.event;
      var nX = e.clientX,
          nY = e.clientY;
      desX = nX - sX;
      desY = nY - sY;
      tX += desX * 0.1;
      tY += desY * 0.1;
      applyTranform(obox);
      sX = nX;
      sY = nY;
    }

    this.onmouseup = function(e) {
      this.onmousemove = this.onmouseup = null;
      obox.timer = setInterval(function() {
        desX *= 0.95;
        desY *= 0.95;
        tX += desX * 0.1;
        tY += desY * 0.1;
        applyTranform(obox);
        playSpin(false);
        if (Math.abs(desX) < 0.5 && Math.abs(desY) < 0.5) {
          clearInterval(obox.timer);
          playSpin(true);
        }
      }, 13);
    }

    return false;
  }
  document.onmousewheel = function(e) {
    e = e || window.event;
    var d = e.wheelDelta / 20 || -e.detail;
    radius += d;
    init(1);
  };
}
             
                

该js 3D旋转木马特效插件的codepen网址为：https://codepen.io/hoanghien0410/pen/MMPaqm