3D Carousel With Mouse & Touch Interactions

An automatic 3D image/video carousel that can be dragged and rotated by mouse or touch events.

How to use it:

1. Add images and videos to the carousel.

<div id="drag-container">
  <div id="spin-container">
    <!-- Images -->
    <img src="1.jpg" alt="Alt" />
    <img src="2.jpg" alt="Alt" />
    <img src="3.jpg" alt="Alt" />
    ...
    <!-- Images With Links -->
    <a target="_blank" href="4.jpg">
      <img src="4.jpg" alt="Alt" />
    </a>
    <!-- Videos  -->
    <video controls autoplay="autoplay" loop>
      <source src="1.mp4" type="video/mp4" />
    </video>
    <!-- Title  -->
    <p>3D Carousel</p>
  </div>
  <div id="ground"></div>
</div>

2. The core CSS/CSS3 styles for the carousel.

body {
  overflow: hidden;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  background: #111;
  -webkit-perspective: 1000px;
  perspective: 1000px;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
}
#drag-container,
#spin-container {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin: auto;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-transform: rotateX(-10deg);
  transform: rotateX(-10deg);
}
#drag-container img,
#drag-container video {
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  line-height: 200px;
  font-size: 50px;
  text-align: center;
  -webkit-box-shadow: 0 0 8px #fff;
  box-shadow: 0 0 8px #fff;
  -webkit-box-reflect: below 10px
    linear-gradient(transparent, transparent, #0005);
}
#drag-container img:hover,
#drag-container video:hover {
  -webkit-box-shadow: 0 0 15px #fffd;
  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%;
  -webkit-transform: translate(-50%, -50%) rotateX(90deg);
  transform: translate(-50%, -50%) rotateX(90deg);
  color: #fff;
}
#ground {
  width: 900px;
  height: 900px;
  position: absolute;
  top: 100%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%) rotateX(90deg);
  transform: translate(-50%, -50%) rotateX(90deg);
  background: -webkit-radial-gradient(
    center center,
    farthest-side,
    #9993,
    transparent
  );
}
@-webkit-keyframes spin {
  from {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
  to {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
}
@keyframes spin {
  from {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
  to {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
}
@-webkit-keyframes spinRevert {
  from {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
  to {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
}
@keyframes spinRevert {
  from {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
  to {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
}

3. The main JavaScript to enable the carousel.

// You can change global variables here:
var radius = 240; // how big of the radius
var autoRotate = true; // auto rotate or not
var rotateSpeed = -60; // unit: seconds/360 degrees
var imgWidth = 120; // width of images (unit: px)
var imgHeight = 170; // height of images (unit: px)
/*
NOTE:
 + imgWidth, imgHeight will work for video
 + if imgWidth, imgHeight too small, play/pause button in <video> will be hidden
*/
// ===================== start =======================
setTimeout(init, 100);
var odrag = document.getElementById("drag-container");
var ospin = document.getElementById("spin-container");
var aImg = ospin.getElementsByTagName("img");
var aVid = ospin.getElementsByTagName("video");
var aEle = [...aImg, ...aVid]; // combine 2 arrays
// Size of images
ospin.style.width = imgWidth + "px";
ospin.style.height = imgHeight + "px";
// Size of ground - depend on radius
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) {
  // Constrain the angle of camera (between 0 and 180)
  if (tY > 180) tY = 180;
  if (tY < 0) tY = 0;
  // Apply the angle
  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;
// auto spin
if (autoRotate) {
  var animationName = rotateSpeed > 0 ? "spin" : "spinRevert";
  ospin.style.animation = `${animationName} ${Math.abs(
    rotateSpeed
  )}s infinite linear`;
}
// setup events
document.onpointerdown = function(e) {
  clearInterval(odrag.timer);
  e = e || window.event;
  var sX = e.clientX,
    sY = e.clientY;
  this.onpointermove = 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(odrag);
    sX = nX;
    sY = nY;
  };
  this.onpointerup = function(e) {
    odrag.timer = setInterval(function() {
      desX *= 0.95;
      desY *= 0.95;
      tX += desX * 0.1;
      tY += desY * 0.1;
      applyTranform(odrag);
      playSpin(false);
      if (Math.abs(desX) < 0.5 && Math.abs(desY) < 0.5) {
        clearInterval(odrag.timer);
        playSpin(true);
      }
    }, 17);
    this.onpointermove = this.onpointerup = null;
  };
  return false;
};
document.onmousewheel = function(e) {
  e = e || window.event;
  var d = e.wheelDelta / 20 || -e.detail;
  radius += d;
  init(1);
};