Диагональная карусель фотографий

HTML:

<div class="carousel">
	<div class="carousel-item">
		<div class="carousel-box">
			<div class="carousel-title">Заголовок</div>
			<div class="num">1</div>
			<img src="photo.jpg" />
		</div>
	</div>
	
	<!-- Еще фото -->
	
	<div class="carousel-item">
		<div class="carousel-box">
			<div class="carousel-title">Заголовок</div>
			<div class="num">N</div>
			<img src="photo.jpg" />
		</div>
	</div>	
</div>

<div class="carousel-title">Заголовок</div>

</div>

<div class="carousel-title">Заголовок</div>

</div>

CSS:

.carousel {
	position: relative;
	z-index: 1;
	height: 600px;
	overflow: hidden;
	pointer-events: none;
	background-image: url(background.jpg);
	background-repeat: no-repeat;
	background-position: 50% 50%;
	background-size: cover;
	box-shadow: 0 4px 12px rgba(0,0,0,0.2), 0 16px 20px rgba(0,0,0,0.2);
	line-height: 1.3;
	margin: 20px 0;
}
.carousel-item {
	--width: clamp(150px, 30vw, 300px);
	--height: clamp(200px, 40vw, 400px);
	--x: calc(var(--active) * 80% * var(--items));
	--y: calc(var(--active) * 20% * var(--items));
	--rot: calc(var(--active) * 120deg);
	--opacity: calc(var(--zIndex) / var(--items) * 3 - 2);
	overflow: hidden;
	position: absolute;
	z-index: var(--zIndex);
	width: var(--width);
	height: var(--height);
	margin: calc(var(--height) * -0.5) 0 0 calc(var(--width) * -0.5);
	border-radius: 10px;
	top: 50%;
	left: 50%;
	user-select: none;
	transform-origin: 0% 100%;
	box-shadow: 0 10px 50px 10px rgba(0, 0, 0, 0.5);
	background: black;
	pointer-events: all;
	transform: translate(var(--x), var(--y)) rotate(var(--rot));
	transition: transform 0.8s cubic-bezier(0, 0.02, 0, 1);
}
.carousel-item .carousel-box {
	position: absolute;
	z-index: 1;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	transition: opacity 0.8s cubic-bezier(0, 0.02, 0, 1);
	opacity: var(--opacity);
}
.carousel-item .carousel-box:before {
	content: "";
	position: absolute;
	z-index: 1;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, 0) 50%, rgba(0, 0, 0, 0.5));
}
.carousel-item .carousel-title {
	position: absolute;
	z-index: 1;
	color: #fff;
	bottom: 18px;
	left: 20px;
	transition: opacity 0.8s cubic-bezier(0, 0.02, 0, 1);
	font-size: clamp(16px, 3vw, 20px);
	text-shadow: 0 0 12px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.7); 
	font-weight: 500;	
}
.carousel-item .num {
	position: absolute;
	z-index: 1;
	color: #fff;
	font-weight: 600;
	top: 10px;
	left: 20px;
	transition: opacity 0.8s cubic-bezier(0, 0.02, 0, 1);
	font-size: clamp(20px, 8vw, 40px);
	font-weight: bold;
	text-shadow: 0 0 12px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.7); 
}
.carousel-item img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	pointer-events: none;
}

.carousel {

position: relative;

z-index: 1;

height: 600px;

overflow: hidden;

pointer-events: none;

background-image: url(background.jpg);

background-repeat: no-repeat;

background-position: 50% 50%;

background-size: cover;

box-shadow: 0 4px 12px rgba(0,0,0,0.2), 0 16px 20px rgba(0,0,0,0.2);

line-height: 1.3;

margin: 20px 0;

}

.carousel-item {

--width: clamp(150px, 30vw, 300px);

--height: clamp(200px, 40vw, 400px);

--x: calc(var(--active) * 80% * var(--items));

--y: calc(var(--active) * 20% * var(--items));

--rot: calc(var(--active) * 120deg);

--opacity: calc(var(--zIndex) / var(--items) * 3 - 2);

overflow: hidden;

position: absolute;

z-index: var(--zIndex);

width: var(--width);

height: var(--height);

margin: calc(var(--height) * -0.5) 0 0 calc(var(--width) * -0.5);

border-radius: 10px;

top: 50%;

left: 50%;

user-select: none;

transform-origin: 0% 100%;

box-shadow: 0 10px 50px 10px rgba(0, 0, 0, 0.5);

background: black;

pointer-events: all;

transform: translate(var(--x), var(--y)) rotate(var(--rot));

transition: transform 0.8s cubic-bezier(0, 0.02, 0, 1);

}

.carousel-item .carousel-box {

position: absolute;

z-index: 1;

top: 0;

left: 0;

width: 100%;

height: 100%;

transition: opacity 0.8s cubic-bezier(0, 0.02, 0, 1);

opacity: var(--opacity);

}

.carousel-item .carousel-box:before {

content: "";

position: absolute;

z-index: 1;

top: 0;

left: 0;

width: 100%;

height: 100%;

background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, 0) 50%, rgba(0, 0, 0, 0.5));

}

.carousel-item .carousel-title {

position: absolute;

z-index: 1;

color: #fff;

bottom: 18px;

left: 20px;

transition: opacity 0.8s cubic-bezier(0, 0.02, 0, 1);

font-size: clamp(16px, 3vw, 20px);

text-shadow: 0 0 12px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.7);

font-weight: 500;

}

.carousel-item .num {

position: absolute;

z-index: 1;

color: #fff;

font-weight: 600;

top: 10px;

left: 20px;

transition: opacity 0.8s cubic-bezier(0, 0.02, 0, 1);

font-size: clamp(20px, 8vw, 40px);

font-weight: bold;

text-shadow: 0 0 12px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.7);

}

.carousel-item img {

width: 100%;

height: 100%;

object-fit: cover;

pointer-events: none;

}

JS:

let startX = 0
let active = 0
let isDown = false
const speedDrag = -0.1
const getZindex = (array, index) => (array.map((_, i) => (index === i) ? array.length : array.length - Math.abs(index - i)))
const carousel = document.querySelector('.carousel')
const $items = document.querySelectorAll('.carousel-item')
let progress = 10 * $items.length / 2
const displayItems = (item, index, active) => {
	const zIndex = getZindex([...$items], active)[index]
	item.style.setProperty('--zIndex', zIndex)
	item.style.setProperty('--active', (index-active)/$items.length)
	item.style.setProperty('--items', $items.length)
}
const animate = () => {
	progress = Math.max(0, Math.min(progress, $items.length * 10))
	active = Math.floor(progress/($items.length * 10) * ($items.length-1))
	$items.forEach((item, index) => displayItems(item, index, active))
}
animate()
$items.forEach((item, i) => {
	item.addEventListener('click', () => {
		progress = (i/$items.length) * $items.length * 10 + 10
		animate()
	})
})
const handleMouseMove = (e) => {
	if (!isDown) return
	const x = e.clientX || (e.touches && e.touches[0].clientX) || 0
	const mouseProgress = (x - startX) * speedDrag
	progress = progress + mouseProgress
	startX = x
	animate()
}
const handleMouseDown = e => {
	isDown = true
	startX = e.clientX || (e.touches && e.touches[0].clientX) || 0
}
const handleMouseUp = () => {
	isDown = false
}
carousel.addEventListener('mousedown', handleMouseDown)
carousel.addEventListener('mousemove', handleMouseMove)
carousel.addEventListener('mouseup', handleMouseUp)
carousel.addEventListener('touchstart', handleMouseDown)
carousel.addEventListener('touchmove', handleMouseMove)
carousel.addEventListener('touchend', handleMouseUp)

let startX = 0

let active = 0

let isDown = false

const speedDrag = -0.1

const getZindex = (array, index) => (array.map((_, i) => (index === i) ? array.length : array.length - Math.abs(index - i)))

const carousel = document.querySelector('.carousel')

const $items = document.querySelectorAll('.carousel-item')

let progress = 10 * $items.length / 2

const displayItems = (item, index, active) => {

const zIndex = getZindex([...$items], active)[index]

item.style.setProperty('--zIndex', zIndex)

item.style.setProperty('--active', (index-active)/$items.length)

item.style.setProperty('--items', $items.length)

}

const animate = () => {

progress = Math.max(0, Math.min(progress, $items.length * 10))

active = Math.floor(progress/($items.length * 10) * ($items.length-1))

$items.forEach((item, index) => displayItems(item, index, active))

}

animate()

$items.forEach((item, i) => {

item.addEventListener('click', () => {

progress = (i/$items.length) * $items.length * 10 + 10

animate()

})

const handleMouseMove = (e) => {

if (!isDown) return

const x = e.clientX || (e.touches && e.touches[0].clientX) || 0

const mouseProgress = (x - startX) * speedDrag

progress = progress + mouseProgress

startX = x

animate()

}

const handleMouseDown = e => {

isDown = true

startX = e.clientX || (e.touches && e.touches[0].clientX) || 0

}

const handleMouseUp = () => {

isDown = false

}

carousel.addEventListener('mousedown', handleMouseDown)

carousel.addEventListener('mousemove', handleMouseMove)

carousel.addEventListener('mouseup', handleMouseUp)

carousel.addEventListener('touchstart', handleMouseDown)

carousel.addEventListener('touchmove', handleMouseMove)

carousel.addEventListener('touchend', handleMouseUp)

Первый слайд карусели задается в переменной progress (в примере это центральный), который рассчитывается по формуле: 10 * кол-во слайдов / 2

За основу взято решение, найденное на codepen.io у пользователя Fabio Ottaviani

Пример:

HTML:

CSS:

JS:

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