Recreating "Motion Study" by Mauricio Vio

index.pug

//- https://dribbble.com/shots/3888265-Motion-Study

-
	var images = [ // Images by various people from Unsplash
			{
				name: 'Benjamin Hung',
				loc: 'Shibuya, Japan',
				src: 'EYmhcdGuYmI',
				url: 'ef5af971-fc46-4ee1-a589-980346478696_opt.png'
			}, {
				name: 'Ryan Tang',
				loc: 'Mong Kok, Hong Kong',
				src: 'ANJHXftvvJ8',
				url: '522d6a86-0dcf-4554-8b22-7655d65a1f66_opt.png'
			}, {
				name: 'Steve Roe',
				loc: 'Incheon, South Korea',
				src: '73aocAAt7rs',
				url: '9b5f71cb-34a3-4fb4-a3a6-0ce9557c0acd_opt.png'
			}, {
				name: 'Sean Foley',
				loc: 'Wan Chai, Hong Kong',
				src: 'aPDCEoW7B78',
				url: '10cfd52d-e217-41e9-bb8b-ad43384a5e63_opt.png'
			}, {
				name: 'Alex Knight',
				loc: 'Shibuya-ku, Japan',
				src: 'Akz00I_GGjU',
				url: 'b9669f2a-17fc-47dc-b6b5-3f863004efa8_opt.png'
			}, {
				name: 'Benjamin Hung',
				loc: 'Tokyo, Japan',
				src: 'pTn26knnKVw',
				url: '31979576-5060-4513-aae2-b379b87e7fe6_opt.png'
			}, {
				name: 'Jesus In Taiwan',
				loc: 'Taipei City, Taiwan',
				src: 'v63B_MUiFw8',
				url: '429b83b8-1ad4-4450-b0de-0a0c1073cf1e_opt.jpg'
			}
		];

#hero-slides
	#header
		#logo
		#menu
			#hamburger
				-for(var i = 0; i < 3; i++)
					.slice
	#slides-cont
		.button#next
		.button#prev
		#slides
			-for(var i = 0; i < 7; i++)
				- var img = images[i % images.length]
				.slide(style=`background-image: url(https://alca.tv/static/u/${img.url})`)
					.number=('0' + (i + 1)).slice(-2)
					.body
						.location=img.loc
						.headline=`Photo by ${img.name}`
						a(href=`https://unsplash.com/photos/${img.src}` target="_blank")
							.link View on Unsplash
		#next-catch
		#prev-catch
	#footer
		//- #page-counter
		a(href="https://dribbble.com/shots/3888265-Motion-Study" target="_blank")
			#dribbble

recreating-motion-study-by-mauricio-vio.markdown

Recreating "Motion Study" by Mauricio Vio

A Pen by Jacob Foster on CodePen.

License.

script.js

let hero = document.getElementById('hero-slides');
let menu = document.getElementById('menu');
let slides = document.getElementById('slides');
let dribbble = document.getElementById('dribbble');
let next = [ 'next', 'next-catch' ].map(n => document.getElementById(n));
let prev = [ 'prev', 'prev-catch' ].map(n => document.getElementById(n));
let slideChildren = slides.children;
let slideCount = slides.children.length;
let currentlyDemoing = false;
let currentPage = 0;
let slidesPerPage = () => window.innerWidth > 1700 ? 4 : window.innerWidth > 1200 ? 3 : 2;
let maxPageCount = () => slideCount / slidesPerPage() - 1;

function goToPage(pageNumber = 0) {
	currentPage = Math.min(maxPageCount(), Math.max(0, pageNumber));
	console.log(currentPage);
	hero.style.setProperty('--page', currentPage);
}

function sleep(time) {
	return new Promise(res => setTimeout(res, time));
}

function hoverSlide(index) {
	index in slideChildren &&
		slideChildren[index].classList.add('hover');
}

function unhoverSlide(index) {
	index in slideChildren &&
		slideChildren[index].classList.remove('hover');
}

async function demo() {
	if(currentlyDemoing) {
		return;
	}
	currentlyDemoing = true;
	if(currentPage !== 0) {
		goToPage(0);
		await sleep(800);
	}
	let slides = slidesPerPage();
	let pageSeq_ = { 2: [ 1, 2, 1 ], 3: [ 1, 2, 1 / 3 ], 4: [ 1, 1, 0 ] };
	let pageSeq = pageSeq_[slides] || pageSeq_[4];
	let slideSeq_ = { 2: [ 2, 4, 3 ], 3: [ 3, 6, 2 ], 4: [ 3, 6, 2 ] };
	let slideSeq = slideSeq_[slides] || slideSeq_[2];
	await sleep(300);
	goToPage(pageSeq[0]);
	await sleep(500);
	hoverSlide(slideSeq[0]);
	await sleep(1200);
	goToPage(pageSeq[1]);
	dribbble.classList.add('hover');
	unhoverSlide(slideSeq[0]);
	await sleep(500);
	hoverSlide(slideSeq[1]);
	await sleep(1200);
	goToPage(pageSeq[2]);
	unhoverSlide(slideSeq[1]);
	await sleep(300);
	hoverSlide(slideSeq[2]);
	await sleep(1600);
	goToPage(0);
	unhoverSlide(slideSeq[2]);
	dribbble.classList.remove('hover');
	currentlyDemoing = false;
}

next.forEach(n => n.addEventListener('click', () => !currentlyDemoing && goToPage(currentPage + 1)));
prev.forEach(n => n.addEventListener('click', () => !currentlyDemoing && goToPage(currentPage - 1)));
menu.addEventListener('click', demo);

sleep(100).then(demo);

// window.addEventListener('resize', () => {
	// console.log(document.body.style.getPropertyValue('--slide-per-page'));
// });

scripts

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/6.26.0/polyfill.min.js"></script>

style.scss

@import url('https://fonts.googleapis.com/css?family=Roboto:100,100i,400,900,800i');

$accent-color: hsl(204, 90%, 50%);
$curve: cubic-bezier(0.7, 0, 0.3, 1);

body {
	--slides-per-page: 2;
	margin: 0;
	overflow: hidden;
	height: 100vh;
	font-family: 'Roboto Condensed', sans-serif;
	color: hsl(0, 0%, 100%);
}

a {
	text-decoration: none;
	color: inherit;
}

#hero-slides {
	--page: 0;
	height: 100vh;
	background: hsl(210, 23%, 19%);
	background: linear-gradient(90deg, hsl(210, 13%, 28%) 0%, hsl(210, 23%, 19%) 100%);
	
	#header {
		height: 12vh;
		line-height: 12vh;
		padding: 0 3vw;
		position: relative;
		
		#logo {
			font-size: 2.5vh;
			font-style: italic;
			
			&:before {
				content: 'The';
				text-transform: uppercase;
				font-weight: 100;
				margin-right: 0.4em;
			}
			&:after {
				content: 'Wall';
				text-transform: uppercase;
				font-weight: 800;
			}
		}
		#menu {
			position: absolute;
			top: 0;
			right: 0;
			bottom: 0;
			cursor: pointer;
			padding: 0 3vw;
			
			&:before {
				font-size: 1.75vh;
				content: 'Play Demo';
				margin-right: 0.5em;
				text-transform: uppercase;
			}
			#hamburger {
				display: inline-block;
				
				.slice {
					background: hsl(0, 0%, 100%);
					height: 0.2vh;
					width: 1vw;
					
					&:not(:last-child) {
						margin-bottom: 0.5vh;
					}
				}
			}
		}
	}
	#slides-cont {
		position: relative;
		// overflow: hidden;
		--button-height: 6vh;
		--button-spacing: 0.2vh;
		
		.button {
			width: 5vw;
			height: var(--button-height);
			background: $accent-color;
			// text-align: center;
			position: absolute;
			right: 5.375vw;
			top: 38vh;
			z-index: 100;
			cursor: pointer;
			
			&:before,
			&:after {
				line-height: var(--button-height);
				position: absolute;
				margin-left: -0.25vw;
				pointer-events: none;
				transform: scale(0.75, 1.5);
				transition: 125ms ease-in-out;
			}
			&:before {
				left: 50%;
			}
			&:after {
				opacity: 0;
			}
			&:hover {
				&:before,
				&:after {
					transition: 250ms ease-in-out;
				}
				&:before {
					opacity: 0;
				}
				&:after {
					left: 50% !important;
					opacity: 1;
				}
			}
		}
		#next {
			margin-top: calc(-1 * (var(--button-height) + var(--button-spacing)));
			
			&:before,
			&:after {
				content: '>';
			}
			&:after {
				left: 30%;
			}
			&:hover:before {
				left: 70%;
			}
		}
		#prev {
			margin-top: var(--button-spacing);
			opacity: calc(var(--page) + 0.5);
			transition: 500ms opacity;
			
			&:before,
			&:after {
				content: '<';
			}
			&:after {
				left: 70%;
			}
			&:hover:before {
				left: 30%;
			}
		}
		#next-catch,
		#prev-catch {
			width: 10vw;
			height: 76vh;
			position: absolute;
			top: 0;
			z-index: 90;
		}
		#next-catch {
			right: 0;
		}
		#prev-catch {
			left: 0;
		}
	}
	#slides {
		--slides-height: 76vh;
		width: auto;
		height: var(--slides-height);
		padding: 0 10vw;
		font-size: 0;
		white-space: nowrap;
		position: absolute;
		transform: translate3D(calc(var(--page) * -80vw), 0, 0);
		transition: 1500ms transform $curve;
		
		.slide {
			display: inline-block;
			vertical-align: top;
			font-size: 1.5vw;
			width: 24em;
			height: var(--slides-height);
			margin: 0 1.333em;
			background: hsl(210, 23%, 8%);
			color: white;
			background-size: cover;
			background-position: center;
			white-space: normal;
			word-break: break-word;
			position: relative;
			
			&:before {
				content: '';
				display: block;
				background: linear-gradient(180deg, hsla(209, 11%, 38%, 0) 0%, hsla(209, 36%, 20%, 0.7) 100%);
				opacity: 0;
				position: absolute;
				top: 0;
				left: 0;
				right: 0;
				bottom: 0;
			}
			.number {
				position: absolute;
				top: 2em;
				left: 2em;
				filter: drop-shadow(0 2px 1px hsla(0, 0%, 0%, 0.5));
				
				&,
				&:before,
				&:after {
					vertical-align: middle;
				}
				&:before,
				&:after {
					display: inline-block;
					content: '';
					height: 0.133em;
					margin-top: -0.2em;
					background: hsl(0, 0%, 100%);
				}
				&:before {
					width: 0;
					margin-left: 0;
				}
				&:after {
					width: 3em;
					margin-left: 1em;
				}
			}
			.body {
				position: absolute;
				bottom: 2em;
				left: 2em;
				right: 2em;
			}
			.location,
			.headline {
				position: relative;
				bottom: 0;
				cursor: default;
			}
			&:before,
			.number:before,
			.number:after,
			.location,
			.headline,
			.link {
				transition: 375ms $curve;
			}
			.location {
				font-weight: 100;
				margin-bottom: 1.5em;
				transition-delay: 60ms;
			}
			.headline {
				font-size: 2.667em;
				font-weight: 900;
				transition-delay: 50ms;
			}
			.link {
				display: inline-block;
				background: $accent-color;
				padding: 0.5em 1.25em;
				font-size: 1.33em;
				opacity: 0;
				position: absolute;
				bottom: -2em;
				pointer-events: none;
				transition-delay: 25ms;
			}
			&.hover,
			&:hover {
				&:before {
					opacity: 1;
				}
				&:before,
				.number:before,
				.number:after,
				.location,
				.headline,
				.link {
					transition: 500ms $curve;
				}
				.number:before {
					width: 3em;
					margin-right: 1em;
				}
				.number:after {
					width: 0;
					margin-right: 0;
				}
				.location {
					transition-delay: 0;
					bottom: 4em;
				}
				.headline {
					transition-delay: 100ms;
					bottom: 1.5em;
				}
				.link {
					bottom: 0;
					opacity: 1;
					transition-delay: 250ms;
					pointer-events: auto;
				}
			}
		}
	}
	#footer {
		height: 12vh;
		font-size: 1vh;
		
// 		#page-counter {
			
// 		}
		#dribbble {
			border-radius: 2vh;
			position: absolute;
			bottom: 4vh;
			right: 4vh;
			transition: 300ms $curve;
			padding-left: 1.5vh;
			
			&:before,
			&:after {
				vertical-align: middle;
				transition: inherit;
			}
			&:before {
				display: inline;
				content: 'View original Dribbble';
				font-size: 2vh;
				opacity: 0;
				transform: translate3D(-200px, 0, 0);
			}
			&:after {
				content: '';
				display: inline-block;
				width: 4vh;
				height: 4vh;
				margin-left: 1vh;
				background-image: url(https://alca.tv/static/u/82fde61b-28ef-4f17-976e-8f1abb5a1165.png);
				background-size: contain;
				background-position: center;
			}
			&.hover,
			&:hover {
				background: hsl(337, 78%, 61%);
				
				&:before {
					opacity: 1;
					transform: translate3D(0, 0, 0);
					transition-delay: 50ms;
				}
				&:after {
					filter: saturate(0%) contrast(200%) brightness(200%) invert(100%);
				}
			}
		}
	}
}

@media (min-width: 1200px) and (max-width: 1699px) {
	body {
		--slides-per-page: 3;
	}
	#hero-slides #slides .slide {
		font-size: 1vw;
	}
}

@media (min-width: 1700px) {
	body {
		--slide-per-age: 4;
	}
	#hero-slides #slides .slide {
		font-size: 0.75vw;
	}
}