如何使用 React 制作 3D 輪播

Question

我找不到如何使用 React 至少顯示三個元素來制作 3D 輪播（又名幻燈片）。 npm 中似乎沒有最新的庫或組件:(

它應該是這樣的：

Answer 1

嘗試了一段時間后，以下是我如何使用 framer motion 來做到這一點：

import './styles.css';
import { AnimatePresence, motion } from 'framer-motion';
import { useState } from 'react';

export default function App() {
  const [[activeIndex, direction], setActiveIndex] = useState([0, 0]);
  const items = ['🍔', '🍕', '🌭', '🍗'];
  
  // we want the scope to be always to be in the scope of the array so that the carousel is endless
  const indexInArrayScope =
    ((activeIndex % items.length) + items.length) % items.length;
  
  // so that the carousel is endless, we need to repeat the items twice
  // then, we slice the the array so that we only have 3 items visible at the same time
  const visibleItems = [...items, ...items].slice(
    indexInArrayScope,
    indexInArrayScope + 3
  );
  const handleClick = newDirection => {
    setActiveIndex(prevIndex => [prevIndex[0] + newDirection, newDirection]);
  };

  return (
    <div className="main-wrapper">
      <div className="wrapper">
        {/*AnimatePresence is necessary to show the items after they are deleted because only max. 3 are shown*/}
        <AnimatePresence mode="popLayout" initial={false}>
          {visibleItems.map((item) => {
            // The layout prop makes the elements change its position as soon as a new one is added
            // The key tells framer-motion that the elements changed its position
            return (
              <motion.div
                className="card"
                key={item}
                layout
                custom={{
                  direction,
                  position: () => {
                    if (item === visibleItems[0]) {
                      return 'left';
                    } else if (item === visibleItems[1]) {
                      return 'center';
                    } else {
                      return 'right';
                    }
                  },
                }}
                variants={variants}
                initial="enter"
                animate="center"
                exit="exit"
                transition={{ duration: 1 }}
              >
                {item}
              </motion.div>
            );
          })}
        </AnimatePresence>
      </div>
      <div className="buttons">
        <motion.button
          whileTap={{ scale: 0.8 }}
          onClick={() => handleClick(-1)}
        >
          ◀︎
        </motion.button>
        <motion.button whileTap={{ scale: 0.8 }} onClick={() => handleClick(1)}>
          ▶︎
        </motion.button>
      </div>
    </div>
  );
}

const variants = {
  enter: ({ direction }) => {
    return { scale: 0.2, x: direction < 1 ? 50 : -50, opacity: 0 };
  },
  center: ({ position }) => {
    return {
      scale: position() === 'center' ? 1 : 0.7,
      x: 0,
      zIndex: zIndex[position()],
      opacity: 1,
    };
  },
  exit: ({ direction }) => {
    return { scale: 0.2, x: direction < 1 ? -50 : 50, opacity: 0 };
  },
};

const zIndex = {
  left: 1,
  center: 2,
  right: 1,
};

這是帶有解決方案的代碼沙箱： https://codesandbox.io/s/react-3d-carousel-wth-framer-motion-rtn6vx?file=/src/App.js