<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>3D Slider</title>
    <style>
        body {
            background: #222;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 0;
            margin: 0;
        }
        #wrap {
            display: grid;
            align-items: center;
            justify-items: center;
            width: 100%;
        }
        .slider3d {
            grid-row: 1/2;
            grid-column: 1/2;
            width: 20%;
            height: auto;
            display: grid;
            transform-style: preserve-3d;
        }
        .slide-trans {
            transition: transform 0.3s;
            transition-timing-function: linear;
        }
        .slider3d>figure {
            grid-row: 1/2;
            grid-column: 1/2;
            margin: 0;
            padding: 0;
            transform-style: preserve-3d;
        }
        .slider3d figure img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border: 7px solid #f2f2f2;
        }
        #ovl {
            grid-row: 1/2;
            grid-column: 1/2;
            width: 500px;
            height: 400px;
        }
    </style>
</head>
<body>
    <div id="wrap">
        <div class="slider3d">
        </div>
        <div id="ovl"></div>
    </div>
    <script>
        const
            animObj = new Animation(null, document.timeline),
            slider3D = document.querySelector('.slider3d');
        let boxOvl, rotateKeyframes, rotateKeyframesReverse, speed = 1;
        function dynStyle() {
            boxOvl = document.getElementById('ovl').getBoundingClientRect();
            const
                wSlider3D = slider3D.clientWidth,
                perspective = (wSlider3D * 3) + 'px',
                translateZ = (wSlider3D * 1.5) + 'px';
            slider3D.classList.add("slide-trans");
            const
                innerWrappers = slider3D.querySelectorAll('figure');
            for (i = 0; i < innerWrappers.length; i++) {
                innerWrappers[i].style.transform = "rotateY(" + (i * (360 / imgs.length)) + "deg) translateZ(" + translateZ + ")";
            }
            rotateKeyframes = new KeyframeEffect(
                slider3D,
                [
                    { transform: 'perspective(' + perspective + ') rotateY(0deg)' },
                    { transform: 'perspective(' + perspective + ') rotateY(360deg)' }
                ],
                { duration: duration, iterations: Infinity }
            );
            rotateKeyframesReverse = new KeyframeEffect(
                slider3D,
                [
                    { transform: 'perspective(' + perspective + ') rotateY(0deg)' },
                    { transform: 'perspective(' + perspective + ') rotateY(-360deg)' }
                ],
                { duration: duration, iterations: Infinity }
            );
            if (speed > 0) {
                animObj.effect = rotateKeyframes;
            } else {
                animObj.effect = rotateKeyframesReverse;
            }
        }
        const
            duration = 10000,
            imgs = ["dia0.jpg", "dia1.jpg", "dia2.jpg", "dia3.jpg", "dia4.jpg", "dia5.jpg"],
            folder = "images";
        for (i = 0; i < imgs.length; i++) {
            const innerWrapper = document.createElement("figure");
            innerWrapper.innerHTML = "<img src='" + folder + "/" + imgs[i] + "'\>";
            slider3D.appendChild(innerWrapper);
        }
        dynStyle();
        animObj.playbackRate = 0;
        animObj.play();
        document.addEventListener("mousemove", (event) => {
            const
                posX = event.clientX,
                posRel = posX - (boxOvl.left + boxOvl.width / 2),
                speedNew = posRel / boxOvl.width;
            console.log(speedNew)
            if (Math.sign(speedNew) != Math.sign(speed) || speed == null) {
                animObj.currentTime = duration - animObj.currentTime % duration;
                if (Math.sign(speedNew) > 0) {
                    animObj.effect = rotateKeyframes;
                    console.log('forward')
                } else {
                    animObj.effect = rotateKeyframesReverse;
                    console.log('reverse')
                }
            }
            animObj.playbackRate = Math.abs(speedNew);
            speed = speedNew;
        });
        window.addEventListener('resize', dynStyle);
    </script>
</body>
</html>