3D слайдер с перспективой

Данный слайдер корректно отображается на всех размерах браузера. При высоком разрешении его фотографии двигаются в зависимости от положения курсора на фоновых (дублирующих основные) изображениях. Также каждый слайд может иметь заголовок и описание.

Решение выполнено на JS без использования дополнительных библиотек.

Пример:

Вайоминг

Национальный Парк Йеллоустоун

Тропики

Мальдивские Острова

Горы

Шотландия

Озеро Ирен

Национальный парк Роки-Маунтин

Енот

Синица

HTML:

<div class="slider" id="slider"> 
	<div class="slider-content" id="slider-content">
		<div class="sl-img">
			<div class="sl-img-item sl-img-item-active" data-id="1"><img src="photo-1.jpg"/></div>
			<div class="sl-img-item" data-id="2"><img src="photo-2.jpg"/></div>
			<div class="sl-img-item" data-id="3"><img src="photo-3.jpg"/></div>
			<div class="sl-img-item" data-id="4"><img src="photo-4.jpg"/></div>
			<div class="sl-img-item" data-id="5"><img src="photo-5.jpg"/></div>
			<div class="sl-img-item" data-id="6"><img src="photo-6.jpg"/></div>
		</div>
		<div class="sl-text">
			<div class="sl-text-item sl-text-item-active" data-id="1">
				<div class="sl-text-item-head">
					<h3>Вайоминг</h3>
				</div>
				<div class="sl-text-item-info">
					<p>Национальный Парк Йеллоустоун</p>
				</div>
			</div>
			<div class="sl-text-item" data-id="2">
				<div class="sl-text-item-head">
					<h3>Тропики</h3>
				</div>
				<div class="sl-text-item-info">
					<p>Мальдивские Острова</p>
				</div>
			</div>
			<div class="sl-text-item" data-id="3">
				<div class="sl-text-item-head">
					<h3>Горы</h3>
				</div>
				<div class="sl-text-item-info">
					<p>Шотландия</p>
				</div>
			</div>
			<div class="sl-text-item" data-id="4">
				<div class="sl-text-item-head">
					<h3>Озеро Ирен</h3>
				</div>
				<div class="sl-text-item-info">
					<p>Национальный парк Роки-Маунтин</p>
				</div>
			</div>
			<div class="sl-text-item" data-id="5">
				<div class="sl-text-item-head">
					<h3>Енот</h3>
				</div>
				<div class="sl-text-item-info"></div>
			</div>
			<div class="sl-text-item" data-id="6">
				<div class="sl-text-item-head"></div>
				<div class="sl-text-item-info">
					<p>Синица</p>	
				</div>
			</div>			
		</div>
	</div>
	<div class="slider__nav">
		<div class="sl-nav-arrows">
			<div class="sl-nav-arrow sl-nav-arrow-left" id="left">Лево</div>
			<div class="sl-nav-arrow sl-nav-arrow-right" id="right">Право</div>
		</div>
		<div class="sl-nav-dots" id="sl-nav-dots">
			<div class="sl-nav-dot sl-nav-dot-active" data-id="1"></div>
			<div class="sl-nav-dot" data-id="2"></div>
			<div class="sl-nav-dot" data-id="3"></div>
			<div class="sl-nav-dot" data-id="4"></div>
			<div class="sl-nav-dot" data-id="5"></div>
			<div class="sl-nav-dot" data-id="6"></div>
		</div>
	</div>
</div>

</div>

<h3>Вайоминг</h3>

</div>

<p>Национальный Парк Йеллоустоун</p>

</div>

<h3>Тропики</h3>

</div>

<p>Мальдивские Острова</p>

</div>

</div>

<p>Шотландия</p>

</div>

<h3>Озеро Ирен</h3>

</div>

<p>Национальный парк Роки-Маунтин</p>

</div>

</div>

</div>

<p>Синица</p>

</div>

<div class="sl-nav-arrow sl-nav-arrow-right" id="right">Право</div>

</div>

</div>

Фотографии для слайдера могут быть разных размеров, т.к. их края обрезаются согласно видимой области.

Подписывать фотографии слайдера не обязательно. Для примера, на слайде 5 и 6 отсутствует верхнее и нижнее описание соответсвенно.

CSS:

:root {
	--z-distance: 150px;
	--from-left: 1;
	--mobile-bkp: 650px;
	--slider-height: 600px;
}
.slider *, 
.slider *::before, 
.slider *::after {
	box-sizing: border-box;
}
.slider {
	width: 100%;
	margin: 20px 0;
	height: var(--slider-height);
	display: flex;
	perspective: 1000px;
	transform-style: preserve-3d;
	position: relative;	
}
.slider::before, 
.slider::after {
	content: '';
	left: 0;
	top: 0;
	display: block;
	position: absolute;
	width: 100%;
	height: var(--slider-height);
	background-position: center;
	background-size: cover;
	will-change: opacity;
	z-index: -1;
	box-shadow: 0 0 0 50vmax rgba(0, 0, 0, 0.3) inset;
}
.slider::before {
	background-image: var(--img-prev);
}
.slider::after {
	transition: opacity 0.7s;
	opacity: 0;
	background-image: var(--img-next);
}
.slider--bg-next::after {
	opacity: 1;
}
.slider-content {
	margin: auto;
	width: 65%;
	height: 65%;
	will-change: transform;
	transform-style: preserve-3d;
	pointer-events: none;
	transform: translateZ(var(--z-distance));
}
.sl-img {
	overflow: hidden;
	position: absolute;
	width: 100%;
	height: calc(100% - 50px);
	z-index: 0;
	box-shadow: 0 0 30px #000;
}
.sl-img-item {
	position: absolute;
	top: 0;
	left: 0;
	height: 100%;
	width: 100%;
	will-change: transform;
	transition-timing-function: ease-in;
	visibility: hidden;
}
.sl-img-item img {
	display: block;
	position: relative;
	left: -30px;
	top: -30px;
	width: calc(100% + 60px);
	max-width: calc(100% + 60px);
	height: calc(100% + 60px);
	object-fit: cover;
	will-change: transform;
}
.sl-img-item-active {
	z-index: 20;
	visibility: visible;
}
.sl-img-item-subactive {
	z-index: 15;
	visibility: visible;
}
.sl-img-item-next {
	transform: translateX(100%);
}
.sl-img-item-prev {
	transform: translateX(-100%);
}
.sl-img-item-transit {
	transition: transform 0.7s, opacity 0.7s;
}
.sl-text {
	position: relative;
	height: 100%;
}
.sl-text-item {
	position: absolute;
	width: 100%;
	height: 100%;
	padding: 10px;
	perspective: 1000px;
	transform-style: preserve-3d;
}
.sl-text-item > * {
	overflow: hidden;
	position: absolute;
}
.sl-text-item h3, 
.sl-text-item p {
	transition: transform 0.35s ease-out;
	overflow: hidden;
    padding: 10px 20px;
	margin: 0;
	font-family: 'Roboto', sans-serif;
	font-weight: normal;
	text-align: center;
}
.sl-text-item h3 {
	background-color: rgba(191, 226, 255, 0.9);
	font-size: 30px;
	text-transform: uppercase;
	color: #000;
	position: relative;
	transform: translateX(-100%);  
}
.sl-text-item p {
	color: #FFF;
	font-size: 20px;
	background-color: rgba(51, 122, 183, 0.9);
	transform: translateX(100%);
}
.sl-text-item h3::before, 
.sl-text-item p::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	transform: translateX(0);
	transition: transform 0.35s ease-out 0.28s;
}
.sl-text-item-head {
	top: -10px;
	left: -10px;
	transform: translateZ(20px);
}
.sl-text-item-info {
	bottom: 40px;
	right: 0;
	max-width: 75%;
	min-width: min-content;
	transform: translateZ(20px);
}
.sl-text-item-active h3, 
.sl-text-item-active p {
	transform: translateX(0);
}
.sl-text-item-active h3::before {
	transform: translateX(102%);
}
.sl-text-item-active p::before {
	transform: translateX(-102%);
}
.sl-text-item-backwards h3::before, 
.sl-text-item-backwards p::before {
	transition: transform 0.35s ease-in;
}
.sl-text-item-backwards h3, 
.sl-text-item-backwards p {
	transition: transform 0.35s ease-in 0.35s;
}
.slider__nav {
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
	height: var(--slider-height);
	text-align: center;
}
.sl-nav-arrows {
	display: flex;
	justify-content: space-between;
	width: 100%;
	position: absolute;
	top: 0;
	left: 0;
	height: var(--slider-height);
}
.sl-nav-arrow {
	height: calc(var(--slider-height) - 100px);
	width: 50vw;
	text-indent: -9999px;
	white-space: nowrap;
}
.sl-nav-arrow-left {
	--arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 4 4'%3E %3Cpolyline points='3 1 1 2 3 3' stroke='white' stroke-width='.6' stroke-opacity='.6' fill='none'%3E%3C/polyline%3E %3C/svg%3E");
	cursor: var(--arrow) 30 30, auto;
}
.sl-nav-arrow-right {
	--arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 4 4'%3E %3Cpolyline points='1 1 3 2 1 3' stroke='white' stroke-width='.6' stroke-opacity='.6' fill='none'%3E%3C/polyline%3E %3C/svg%3E");
	cursor: var(--arrow) 30 30, auto;
}
.sl-nav-dots {
	top: calc(var(--slider-height) - 80px);
	display: inline-flex;
	position: relative;
	padding: 12px;
	pointer-events: none;
}
.sl-nav-dots::before {
	content: '';
	position: absolute;
	left: 22px;
	top: 12px;
	width: 20px;
	height: 20px;
	background-color: rgba(51, 122, 183, 0.9);
	transition: transform 0.7s ease-out;
	transform: translateX(calc(40px * (var(--from-left) - 1)));
}
.sl-nav-dot {
	margin: 0 10px;
	width: 20px;
	height: 20px;
	border: 2px solid rgba(191, 226, 255, 0.9);
	cursor: pointer;
	pointer-events: all;
	display: inline-block;
	transition: border-color 0.3s ease-out;
}
.sl-nav-dot:hover {
	border-color: rgba(255, 255, 255, 1);
}
.sl-nav-dot:active {
	border-color: rgba(255, 255, 255, 1);
}
@media only screen and (max-width: 650px) {
	.slider::before,
	.slider::after {
		display: none;
	}
	.slider-content {
		width: 100%;
		height: var(--slider-height);
		transform: translateZ(0);
	}
	.sl-img {
		height: 100%;
		box-shadow: none;
	} 
	.sl-text-item-info {
		bottom: 116px;
		left: 50%;
		transform: translate(-50%, 0);
	}
	.sl-text-item-info p {
		padding: 20px;
	}
	.sl-text-item-head {
		top: 40px;
		left: 40px;
		transform: translateZ(0);
	}
	.sl-text-item-head h3 {
		font-size: 26px;
	}
	.sl-nav-dots {
		background-color: rgba(0, 0, 0, 0.3);
	}
	.sl-nav-arrow {
		width: 10%;
		position: relative;
		cursor: auto;
		height: var(--slider-height);
	}
	.sl-nav-arrow::before {
		content: '';
		background-image: var(--arrow);
		background-size: cover;
		width: 40px;
		height: 40px;
		position: absolute;
		top: 50%;
		left: 50%;
		transform: translate(-50%, -50%);
	}
	.sl-nav-arrow-left {
		background-image: linear-gradient(to right, rgba(0, 0, 0, 0.7) 0, transparent 100%);
	}
	.sl-nav-arrow-left:active {
		background-image: linear-gradient(to right, rgba(0, 0, 0, 0.9) 0, transparent 100%);
	}
	.sl-nav-arrow-right {
		background-image: linear-gradient(to left, rgba(0, 0, 0, 0.7) 0, transparent 100%);
	}
	.sl-nav-arrow-right:active {
		background-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 0, transparent 100%);
	}
	/* Фикс для ресайза */ 
	.slider-content,
	.sl-img-item img {
		transform: none!important;
	}  
}

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:root {

--z-distance: 150px;

--from-left: 1;

--mobile-bkp: 650px;

--slider-height: 600px;

}

.slider *,

.slider *::before,

.slider *::after {

box-sizing: border-box;

}

.slider {

width: 100%;

margin: 20px 0;

height: var(--slider-height);

display: flex;

perspective: 1000px;

transform-style: preserve-3d;

position: relative;

}

.slider::before,

.slider::after {

content: '';

left: 0;

top: 0;

display: block;

position: absolute;

width: 100%;

height: var(--slider-height);

background-position: center;

background-size: cover;

will-change: opacity;

z-index: -1;

box-shadow: 0 0 0 50vmax rgba(0, 0, 0, 0.3) inset;

}

.slider::before {

}

.slider::after {

transition: opacity 0.7s;

opacity: 0;

}

.slider--bg-next::after {

opacity: 1;

}

.slider-content {

margin: auto;

width: 65%;

height: 65%;

will-change: transform;

transform-style: preserve-3d;

pointer-events: none;

transform: translateZ(var(--z-distance));

}

.sl-img {

overflow: hidden;

position: absolute;

width: 100%;

height: calc(100% - 50px);

z-index: 0;

box-shadow: 0 0 30px #000;

}

.sl-img-item {

position: absolute;

top: 0;

left: 0;

height: 100%;

width: 100%;

will-change: transform;

transition-timing-function: ease-in;

visibility: hidden;

}

.sl-img-item img {

display: block;

position: relative;

left: -30px;

top: -30px;

width: calc(100% + 60px);

max-width: calc(100% + 60px);

height: calc(100% + 60px);

object-fit: cover;

will-change: transform;

}

.sl-img-item-active {

z-index: 20;

visibility: visible;

}

.sl-img-item-subactive {

z-index: 15;

visibility: visible;

}

.sl-img-item-next {

transform: translateX(100%);

}

.sl-img-item-prev {

transform: translateX(-100%);

}

.sl-img-item-transit {

transition: transform 0.7s, opacity 0.7s;

}

.sl-text {

position: relative;

height: 100%;

}

.sl-text-item {

position: absolute;

width: 100%;

height: 100%;

padding: 10px;

perspective: 1000px;

transform-style: preserve-3d;

}

.sl-text-item > * {

overflow: hidden;

position: absolute;

}

.sl-text-item h3,

.sl-text-item p {

transition: transform 0.35s ease-out;

overflow: hidden;

padding: 10px 20px;

margin: 0;

font-family: 'Roboto', sans-serif;

font-weight: normal;

text-align: center;

}

.sl-text-item h3 {

background-color: rgba(191, 226, 255, 0.9);

font-size: 30px;

text-transform: uppercase;

color: #000;

position: relative;

transform: translateX(-100%);

}

.sl-text-item p {

color: #FFF;

font-size: 20px;

background-color: rgba(51, 122, 183, 0.9);

transform: translateX(100%);

}

.sl-text-item h3::before,

.sl-text-item p::before {

content: '';

position: absolute;

top: 0;

left: 0;

width: 100%;

height: 100%;

transform: translateX(0);

transition: transform 0.35s ease-out 0.28s;

}

.sl-text-item-head {

top: -10px;

left: -10px;

transform: translateZ(20px);

}

.sl-text-item-info {

bottom: 40px;

right: 0;

max-width: 75%;

min-width: min-content;

transform: translateZ(20px);

}

.sl-text-item-active h3,

.sl-text-item-active p {

transform: translateX(0);

}

.sl-text-item-active h3::before {

transform: translateX(102%);

}

.sl-text-item-active p::before {

transform: translateX(-102%);

}

.sl-text-item-backwards h3::before,

.sl-text-item-backwards p::before {

transition: transform 0.35s ease-in;

}

.sl-text-item-backwards h3,

.sl-text-item-backwards p {

transition: transform 0.35s ease-in 0.35s;

}

.slider__nav {

position: absolute;

left: 0;

top: 0;

width: 100%;

height: var(--slider-height);

text-align: center;

}

.sl-nav-arrows {

display: flex;

justify-content: space-between;

width: 100%;

position: absolute;

top: 0;

left: 0;

height: var(--slider-height);

}

.sl-nav-arrow {

height: calc(var(--slider-height) - 100px);

width: 50vw;

text-indent: -9999px;

white-space: nowrap;

}

.sl-nav-arrow-left {

--arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 4 4'%3E %3Cpolyline points='3 1 1 2 3 3' stroke='white' stroke-width='.6' stroke-opacity='.6' fill='none'%3E%3C/polyline%3E %3C/svg%3E");

cursor: var(--arrow) 30 30, auto;

}

.sl-nav-arrow-right {

--arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 4 4'%3E %3Cpolyline points='1 1 3 2 1 3' stroke='white' stroke-width='.6' stroke-opacity='.6' fill='none'%3E%3C/polyline%3E %3C/svg%3E");

cursor: var(--arrow) 30 30, auto;

}

.sl-nav-dots {

top: calc(var(--slider-height) - 80px);

display: inline-flex;

position: relative;

padding: 12px;

pointer-events: none;

}

.sl-nav-dots::before {

content: '';

position: absolute;

left: 22px;

top: 12px;

width: 20px;

height: 20px;

background-color: rgba(51, 122, 183, 0.9);

transition: transform 0.7s ease-out;

transform: translateX(calc(40px * (var(--from-left) - 1)));

}

.sl-nav-dot {

margin: 0 10px;

width: 20px;

height: 20px;

border: 2px solid rgba(191, 226, 255, 0.9);

cursor: pointer;

pointer-events: all;

display: inline-block;

transition: border-color 0.3s ease-out;

}

.sl-nav-dot:hover {

border-color: rgba(255, 255, 255, 1);

}

.sl-nav-dot:active {

border-color: rgba(255, 255, 255, 1);

}

@media only screen and (max-width: 650px) {

.slider::before,

.slider::after {

display: none;

}

.slider-content {

width: 100%;

height: var(--slider-height);

transform: translateZ(0);

}

.sl-img {

height: 100%;

box-shadow: none;

}

.sl-text-item-info {

bottom: 116px;

left: 50%;

transform: translate(-50%, 0);

}

.sl-text-item-info p {

padding: 20px;

}

.sl-text-item-head {

top: 40px;

left: 40px;

transform: translateZ(0);

}

.sl-text-item-head h3 {

font-size: 26px;

}

.sl-nav-dots {

background-color: rgba(0, 0, 0, 0.3);

}

.sl-nav-arrow {

width: 10%;

position: relative;

cursor: auto;

height: var(--slider-height);

}

.sl-nav-arrow::before {

content: '';

background-size: cover;

width: 40px;

height: 40px;

position: absolute;

top: 50%;

left: 50%;

transform: translate(-50%, -50%);

}

.sl-nav-arrow-left {

background-image: linear-gradient(to right, rgba(0, 0, 0, 0.7) 0, transparent 100%);

}

.sl-nav-arrow-left:active {

background-image: linear-gradient(to right, rgba(0, 0, 0, 0.9) 0, transparent 100%);

}

.sl-nav-arrow-right {

background-image: linear-gradient(to left, rgba(0, 0, 0, 0.7) 0, transparent 100%);

}

.sl-nav-arrow-right:active {

background-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 0, transparent 100%);

}

/* Фикс для ресайза */

.slider-content,

.sl-img-item img {

transform: none!important;

}

Переменные:

--z-distance - дистанция по оси Z от фона до слайдера;

--from-left - первый слайд;

--mobile-bkp - максимальная ширина браузера, при которой слайдер переключится на мобильный вариант (данное значение нужно также установить в строке @media only screen and (max-width: 650px);

--slider-height - высота слайдера.

JS:

function lerp({ x, y }, { x: targetX, y: targetY }) {
	const fraction = 0.1; 
	x += (targetX - x) * fraction;
	y += (targetY - y) * fraction;
	return { x, y };
}
class Slider {
	constructor (el) {
		const imgClass = this.IMG_CLASS = 'sl-img-item';
		const textClass = this.TEXT_CLASS = 'sl-text-item';
		const activeImgClass = this.ACTIVE_IMG_CLASS = `${imgClass}-active`;
		const activeTextClass = this.ACTIVE_TEXT_CLASS =  `${textClass}-active`;
		this.el = el;
		this.contentE0 = document.getElementById('slider');
		this.contentEl = document.getElementById('slider-content');
		this.onMouseMove = this.onMouseMove.bind(this);
		this.activeImg = el.getElementsByClassName(activeImgClass);
		this.activeText = el.getElementsByClassName(activeTextClass);
		this.images = el.getElementsByTagName('img');
		document.getElementById('sl-nav-dots').addEventListener('click', this.onDotClick.bind(this));
		document.getElementById('left').addEventListener('click', this.prev.bind(this));
		document.getElementById('right').addEventListener('click', this.next.bind(this));
		window.addEventListener('resize', this.onResize.bind(this));
		this.onResize();
		this.length = this.images.length;
		this.lastX = this.lastY = this.targetX = this.targetY = 0;
	}
	onResize () {
		const htmlStyles = getComputedStyle(document.documentElement);
		const mobileBreakpoint =  htmlStyles.getPropertyValue('--mobile-bkp');
		const isMobile = this.isMobile = matchMedia(`only screen and (max-width: ${mobileBreakpoint})`).matches;
		this.halfWidth = this.contentE0.offsetWidth / 2;
		this.halfHeight = this.contentE0.offsetHeight / 2;
		this.zDistance = htmlStyles.getPropertyValue('--z-distance');
		if (!isMobile && !this.mouseWatched) {
			this.mouseWatched = true;
			this.el.addEventListener('mousemove', this.onMouseMove);
			this.el.style.setProperty(
				'--img-prev', 
				`url(${this.images[+this.activeImg[0].dataset.id - 1].src})`
			);
			this.contentEl.style.setProperty('transform', `translateZ(${this.zDistance})`);
			} else if (isMobile && this.mouseWatched) {
			this.mouseWatched = false;
			this.el.removeEventListener('mousemove', this.onMouseMove);
			this.contentEl.style.setProperty('transform', 'none');
		}
	}
	getMouseCoefficients ({ clientX, clientY } = {}) {
		const halfWidth = this.halfWidth;
		const halfHeight = this.halfHeight;
		const xCoeff = ((clientX || this.targetX) - halfWidth) / halfWidth;
		const yCoeff = (halfHeight - (clientY || this.targetY)) / halfHeight;
		return { xCoeff,  yCoeff }
	}
	onMouseMove ({ clientX, clientY }) { 
		this.targetX = clientX - this.contentE0.getBoundingClientRect().left;
		this.targetY = clientY - this.contentE0.getBoundingClientRect().top;
		if (!this.animationRunning) {
			this.animationRunning = true;
			this.runAnimation();
		}
	}
	runAnimation () {
		if (this.animationStopped) {
			this.animationRunning = false;
			return;
		}
		const maxX = 10;
		const maxY = 10;
		const newPos = lerp({
			x: this.lastX,
			y: this.lastY
			}, {
			x: this.targetX,
			y: this.targetY
		});
		const { xCoeff, yCoeff } = this.getMouseCoefficients({
			clientX: newPos.x, 
			clientY: newPos.y
		});  
		this.lastX = newPos.x;
		this.lastY = newPos.y;
		this.positionImage({ xCoeff, yCoeff }); 
		this.contentEl.style.setProperty('transform', `
			translateZ(${this.zDistance})
			rotateX(${maxY * yCoeff}deg)
			rotateY(${maxX * xCoeff}deg)
		`);
		if (this.reachedFinalPoint) {
			this.animationRunning = false;
			} else {
			requestAnimationFrame(this.runAnimation.bind(this)); 
		}
	}
	get reachedFinalPoint () {
		const lastX = ~~this.lastX;
		const lastY = ~~this.lastY;
		const targetX = this.targetX;
		const targetY = this.targetY;
		return (lastX == targetX || lastX - 1 == targetX || lastX + 1 == targetX) 
        && (lastY == targetY || lastY - 1 == targetY || lastY + 1 == targetY);
	}
	positionImage ({ xCoeff, yCoeff }) {
		const maxImgOffset = 1;
		const currentImage = this.activeImg[0].children[0];
		currentImage.style.setProperty('transform', `
			translateX(${maxImgOffset * -xCoeff}em)
			translateY(${maxImgOffset * yCoeff}em)
		`);  
	}
	onDotClick ({ target }) {
		if (this.inTransit) return;
		const dot = target.closest('.sl-nav-dot');
		if (!dot) return;
		const nextId = dot.dataset.id;
		const currentId = this.activeImg[0].dataset.id;
		if (currentId == nextId) return;
		this.startTransition(nextId);
	}
	transitionItem (nextId) {
		function onImageTransitionEnd (e) {
			e.stopPropagation();
			nextImg.classList.remove(transitClass);
			self.inTransit = false;
			this.className = imgClass;
			this.removeEventListener('transitionend', onImageTransitionEnd);
		}
		const self = this;
		const el = this.el;
		const currentImg = this.activeImg[0];
		const currentId = currentImg.dataset.id;
		const imgClass = this.IMG_CLASS;
		const textClass = this.TEXT_CLASS;
		const activeImgClass = this.ACTIVE_IMG_CLASS;
		const activeTextClass = this.ACTIVE_TEXT_CLASS;
		const subActiveClass = `${imgClass}-subactive`;
		const transitClass = `${imgClass}-transit`;
		const nextImg = el.querySelector(`.${imgClass}[data-id='${nextId}']`);
		const nextText = el.querySelector(`.${textClass}[data-id='${nextId}']`);
		let outClass = '';
		let inClass = '';
		this.animationStopped = true;
		nextText.classList.add(activeTextClass);
		el.style.setProperty('--from-left', nextId);
		currentImg.classList.remove(activeImgClass);
		currentImg.classList.add(subActiveClass);
		if (currentId < nextId) {
			outClass = `${imgClass}-next`;
			inClass = `${imgClass}-prev`;
			} else {
			outClass = `${imgClass}-prev`;
			inClass = `${imgClass}-next`;
		}
		nextImg.classList.add(outClass);
		requestAnimationFrame(() => {
			nextImg.classList.add(transitClass, activeImgClass);
			nextImg.classList.remove(outClass);
			this.animationStopped = false;
			this.positionImage(this.getMouseCoefficients());
			currentImg.classList.add(transitClass, inClass);
			currentImg.addEventListener('transitionend', onImageTransitionEnd);
		});
		if (!this.isMobile)
		this.switchBackgroundImage(nextId);
	}
	startTransition (nextId) {
		function onTextTransitionEnd(e) {
			if (!e.pseudoElement) {
				e.stopPropagation();
				requestAnimationFrame(() => {
					self.transitionItem(nextId);
				});
				this.removeEventListener('transitionend', onTextTransitionEnd);
			}
		}
		if (this.inTransit) return;
		const activeText = this.activeText[0];
		const backwardsClass = `${this.TEXT_CLASS}-backwards`;
		const self = this; 
		this.inTransit = true;
		activeText.classList.add(backwardsClass);
		activeText.classList.remove(this.ACTIVE_TEXT_CLASS);
		activeText.addEventListener('transitionend', onTextTransitionEnd);
		requestAnimationFrame(() => {
			activeText.classList.remove(backwardsClass);
		});
	}
	next () {
		if (this.inTransit) return;
		let nextId = +this.activeImg[0].dataset.id + 1;
		if (nextId > this.length)
        nextId = 1;
		this.startTransition(nextId);
	}
	prev () {
		if (this.inTransit) return;
		let nextId = +this.activeImg[0].dataset.id - 1;
		if (nextId < 1)
        nextId = this.length;
		this.startTransition(nextId);
	}
	switchBackgroundImage (nextId) {
		function onBackgroundTransitionEnd (e) {
			if (e.target === this) {
				this.style.setProperty('--img-prev', imageUrl);
				this.classList.remove(bgClass);
				this.removeEventListener('transitionend', onBackgroundTransitionEnd);
			}
		}
		const bgClass = 'slider--bg-next';
		const el = this.el;
		const imageUrl = `url(${this.images[+nextId - 1].src})`;
		el.style.setProperty('--img-next', imageUrl);
		el.addEventListener('transitionend', onBackgroundTransitionEnd);
		el.classList.add(bgClass);
	}
}
const sliderEl = document.getElementById('slider');
const slider = new Slider(sliderEl);
let timer = 0;
function autoSlide () {
	requestAnimationFrame(() => {
		slider.next();
	});
	timer = setTimeout(autoSlide, 4000);
}
function stopAutoSlide () {
	clearTimeout(timer);
	this.removeEventListener('touchstart', stopAutoSlide);
	this.removeEventListener('mousemove', stopAutoSlide);  
}
sliderEl.addEventListener('mousemove', stopAutoSlide);
sliderEl.addEventListener('touchstart', stopAutoSlide);
timer = setTimeout(autoSlide, 4000);

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function lerp({ x, y }, { x: targetX, y: targetY }) {

const fraction = 0.1;

x += (targetX - x) * fraction;

y += (targetY - y) * fraction;

return { x, y };

}

class Slider {

constructor (el) {

const imgClass = this.IMG_CLASS = 'sl-img-item';

const textClass = this.TEXT_CLASS = 'sl-text-item';

const activeImgClass = this.ACTIVE_IMG_CLASS = `${imgClass}-active`;

const activeTextClass = this.ACTIVE_TEXT_CLASS = `${textClass}-active`;

this.el = el;

this.contentE0 = document.getElementById('slider');

this.contentEl = document.getElementById('slider-content');

this.onMouseMove = this.onMouseMove.bind(this);

this.activeImg = el.getElementsByClassName(activeImgClass);

this.activeText = el.getElementsByClassName(activeTextClass);

this.images = el.getElementsByTagName('img');

document.getElementById('sl-nav-dots').addEventListener('click', this.onDotClick.bind(this));

document.getElementById('left').addEventListener('click', this.prev.bind(this));

document.getElementById('right').addEventListener('click', this.next.bind(this));

window.addEventListener('resize', this.onResize.bind(this));

this.onResize();

this.length = this.images.length;

this.lastX = this.lastY = this.targetX = this.targetY = 0;

}

onResize () {

const htmlStyles = getComputedStyle(document.documentElement);

const mobileBreakpoint = htmlStyles.getPropertyValue('--mobile-bkp');

const isMobile = this.isMobile = matchMedia(`only screen and (max-width: ${mobileBreakpoint})`).matches;

this.halfWidth = this.contentE0.offsetWidth / 2;

this.halfHeight = this.contentE0.offsetHeight / 2;

this.zDistance = htmlStyles.getPropertyValue('--z-distance');

if (!isMobile && !this.mouseWatched) {

this.mouseWatched = true;

this.el.addEventListener('mousemove', this.onMouseMove);

this.el.style.setProperty(

'--img-prev',

`url(${this.images[+this.activeImg[0].dataset.id - 1].src})`

);

this.contentEl.style.setProperty('transform', `translateZ(${this.zDistance})`);

} else if (isMobile && this.mouseWatched) {

this.mouseWatched = false;

this.el.removeEventListener('mousemove', this.onMouseMove);

this.contentEl.style.setProperty('transform', 'none');

}

getMouseCoefficients ({ clientX, clientY } = {}) {

const halfWidth = this.halfWidth;

const halfHeight = this.halfHeight;

const xCoeff = ((clientX || this.targetX) - halfWidth) / halfWidth;

const yCoeff = (halfHeight - (clientY || this.targetY)) / halfHeight;

return { xCoeff, yCoeff }

}

onMouseMove ({ clientX, clientY }) {

this.targetX = clientX - this.contentE0.getBoundingClientRect().left;

this.targetY = clientY - this.contentE0.getBoundingClientRect().top;

if (!this.animationRunning) {

this.animationRunning = true;

this.runAnimation();

}

runAnimation () {

if (this.animationStopped) {

this.animationRunning = false;

return;

}

const maxX = 10;

const maxY = 10;

const newPos = lerp({

x: this.lastX,

y: this.lastY

}, {

x: this.targetX,

y: this.targetY

});

const { xCoeff, yCoeff } = this.getMouseCoefficients({

clientX: newPos.x,

clientY: newPos.y

});

this.lastX = newPos.x;

this.lastY = newPos.y;

this.positionImage({ xCoeff, yCoeff });

this.contentEl.style.setProperty('transform', `

translateZ(${this.zDistance})

rotateX(${maxY * yCoeff}deg)

rotateY(${maxX * xCoeff}deg)

`);

if (this.reachedFinalPoint) {

this.animationRunning = false;

} else {

requestAnimationFrame(this.runAnimation.bind(this));

}

get reachedFinalPoint () {

const lastX = ~~this.lastX;

const lastY = ~~this.lastY;

const targetX = this.targetX;

const targetY = this.targetY;

return (lastX == targetX || lastX - 1 == targetX || lastX + 1 == targetX)

&& (lastY == targetY || lastY - 1 == targetY || lastY + 1 == targetY);

}

positionImage ({ xCoeff, yCoeff }) {

const maxImgOffset = 1;

const currentImage = this.activeImg[0].children[0];

currentImage.style.setProperty('transform', `

translateX(${maxImgOffset * -xCoeff}em)

translateY(${maxImgOffset * yCoeff}em)

`);

}

onDotClick ({ target }) {

if (this.inTransit) return;

const dot = target.closest('.sl-nav-dot');

if (!dot) return;

const nextId = dot.dataset.id;

const currentId = this.activeImg[0].dataset.id;

if (currentId == nextId) return;

this.startTransition(nextId);

}

transitionItem (nextId) {

function onImageTransitionEnd (e) {

e.stopPropagation();

nextImg.classList.remove(transitClass);

self.inTransit = false;

this.className = imgClass;

this.removeEventListener('transitionend', onImageTransitionEnd);

}

const self = this;

const el = this.el;

const currentImg = this.activeImg[0];

const currentId = currentImg.dataset.id;

const imgClass = this.IMG_CLASS;

const textClass = this.TEXT_CLASS;

const activeImgClass = this.ACTIVE_IMG_CLASS;

const activeTextClass = this.ACTIVE_TEXT_CLASS;

const subActiveClass = `${imgClass}-subactive`;

const transitClass = `${imgClass}-transit`;

const nextImg = el.querySelector(`.${imgClass}[data-id='${nextId}']`);

const nextText = el.querySelector(`.${textClass}[data-id='${nextId}']`);

let outClass = '';

let inClass = '';

this.animationStopped = true;

nextText.classList.add(activeTextClass);

el.style.setProperty('--from-left', nextId);

currentImg.classList.remove(activeImgClass);

currentImg.classList.add(subActiveClass);

if (currentId < nextId) {

outClass = `${imgClass}-next`;

inClass = `${imgClass}-prev`;

} else {

outClass = `${imgClass}-prev`;

inClass = `${imgClass}-next`;

}

nextImg.classList.add(outClass);

requestAnimationFrame(() => {

nextImg.classList.add(transitClass, activeImgClass);

nextImg.classList.remove(outClass);

this.animationStopped = false;

this.positionImage(this.getMouseCoefficients());

currentImg.classList.add(transitClass, inClass);

currentImg.addEventListener('transitionend', onImageTransitionEnd);

});

if (!this.isMobile)

this.switchBackgroundImage(nextId);

}

startTransition (nextId) {

function onTextTransitionEnd(e) {

if (!e.pseudoElement) {

e.stopPropagation();

requestAnimationFrame(() => {

self.transitionItem(nextId);

});

this.removeEventListener('transitionend', onTextTransitionEnd);

}

if (this.inTransit) return;

const activeText = this.activeText[0];

const backwardsClass = `${this.TEXT_CLASS}-backwards`;

const self = this;

this.inTransit = true;

activeText.classList.add(backwardsClass);

activeText.classList.remove(this.ACTIVE_TEXT_CLASS);

activeText.addEventListener('transitionend', onTextTransitionEnd);

requestAnimationFrame(() => {

activeText.classList.remove(backwardsClass);

});

}

next () {

if (this.inTransit) return;

let nextId = +this.activeImg[0].dataset.id + 1;

if (nextId > this.length)

nextId = 1;

this.startTransition(nextId);

}

prev () {

if (this.inTransit) return;

let nextId = +this.activeImg[0].dataset.id - 1;

if (nextId < 1)

nextId = this.length;

this.startTransition(nextId);

}

switchBackgroundImage (nextId) {

function onBackgroundTransitionEnd (e) {

if (e.target === this) {

this.style.setProperty('--img-prev', imageUrl);

this.classList.remove(bgClass);

this.removeEventListener('transitionend', onBackgroundTransitionEnd);

}

const bgClass = 'slider--bg-next';

const el = this.el;

const imageUrl = `url(${this.images[+nextId - 1].src})`;

el.style.setProperty('--img-next', imageUrl);

el.addEventListener('transitionend', onBackgroundTransitionEnd);

el.classList.add(bgClass);

}

const sliderEl = document.getElementById('slider');

const slider = new Slider(sliderEl);

let timer = 0;

function autoSlide () {

requestAnimationFrame(() => {

slider.next();

});

timer = setTimeout(autoSlide, 4000);

}

function stopAutoSlide () {

clearTimeout(timer);

this.removeEventListener('touchstart', stopAutoSlide);

this.removeEventListener('mousemove', stopAutoSlide);

}

sliderEl.addEventListener('mousemove', stopAutoSlide);

sliderEl.addEventListener('touchstart', stopAutoSlide);

timer = setTimeout(autoSlide, 4000);

За основу взято решение, найденное на codepen.io у пользователя Alex Nozdriukhin

Опубликовано: 03.06.2020
Рубрики: Слайдеры и карусели
Метки: 3D, JavaScript, Фото
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