3D Carousel

3d-carousel.markdown

3D Carousel

This is a simple carousel react component, that utilizes CSS transformations to create this 3D effect.

The cards are rotated, translated and blurred based on their distance in the list from the active card. Additionally, the color of the card is changing to be darker while maintaining the same hue using hsl().

A Pen by substance on CodePen.

License.

script.babel

import React, {useState} from 'https://cdn.skypack.dev/react';
import ReactDOM from 'https://cdn.skypack.dev/react-dom';
import {TiChevronLeftOutline, TiChevronRightOutline} from 'https://cdn.skypack.dev/react-icons/ti';

const CARDS = 10;
const MAX_VISIBILITY = 3;

const Card = ({title, content}) => (
  <div className='card'>
    <h2>{title}</h2>
    <p>{content}</p>
  </div>
);

const Carousel = ({children}) => {
  const [active, setActive] = useState(2);
  const count = React.Children.count(children);
  
  return (
    <div className='carousel'>
      {active > 0 && <button className='nav left' onClick={() => setActive(i => i - 1)}><TiChevronLeftOutline/></button>}
      {React.Children.map(children, (child, i) => (
        <div className='card-container' style={{
            '--active': i === active ? 1 : 0,
            '--offset': (active - i) / 3,
            '--abs-offset': Math.abs(active - i) / 3,
            'pointer-events': active === i ? 'auto' : 'none',
            'opacity': Math.abs(active - i) >= MAX_VISIBILITY ? '0' : '1',
            'display': Math.abs(active - i) > MAX_VISIBILITY ? 'none' : 'block',
          }}>
          {child}
        </div>
      ))}
      {active < count - 1 && <button className='nav right' onClick={() => setActive(i => i + 1)}><TiChevronRightOutline/></button>}
    </div>
  );
};

const App = () => (
  <div className='app'>
    <Carousel>
      {[...new Array(CARDS)].map((_, i) => (
        <Card title={'Card ' + (i + 1)} content='Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.'/>
      ))}
    </Carousel>
  </div>
);

ReactDOM.render(
  <App/>,
  document.body
);

style.scss

$color-purple: #8B5CF6;
$color-pink: #EC4899;
$color-gray: #9CA3AF;
$color-black: #1F2937;
$card-size: 23rem;

body {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-image: linear-gradient(45deg, $color-purple, $color-pink);
  font-family: 'Montserrat', sans-serif;
}

* {
  box-sizing: border-box;
}

.carousel {
  position: relative;
  width: $card-size;
  height: $card-size;
  perspective: 500px;
  transform-style: preserve-3d;
}

.card-container {
  position: absolute;
  width: 100%;
  height: 100%;
  transform: 
    rotateY(calc(var(--offset) * 50deg)) 
    scaleY(calc(1 + var(--abs-offset) * -0.4))
    translateZ(calc(var(--abs-offset) * -30rem))
    translateX(calc(var(--offset) / var(--abs-offset) * -5rem));
  filter: blur(calc(var(--abs-offset) * 1rem));
  transition: all 0.3s ease-out;
}

.card {
  width: 100%;
  height: 100%;
  padding: 2rem;
  background-color: hsl(280deg, 40%, calc(100% - var(--abs-offset) * 50%));
  border-radius: 1rem;
  color: $color-gray;
  text-align: justify;
  transition: all 0.3s ease-out;
  
  h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: bold;
    margin: 0 0 0.7em;
    color: $color-black;
  }
  
  p, h2 {
    transition: all 0.3s ease-out;
    opacity: var(--active);
  }
}

.nav {
  color: white;
  font-size: 5rem;
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  top: 50%;
  z-index: 2;
  cursor: pointer;
  user-select: none;
  background: unset;
  border: unset;
  
  &.left {
    transform: translateX(-100%) translatey(-50%);
  }
  
  &.right {
    right: 0;
    transform: translateX(100%) translatey(-50%);
  }
}

styles

<link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&amp;display=swap" rel="stylesheet" />