<div id="image-track" data-mouse-down-at="0" data-prev-percentage="0">
  <img class="image" src="https://images.unsplash.com/photo-1524781289445-ddf8f5695861?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1770&q=80" draggable="false" />
  <img class="image" src="https://images.unsplash.com/photo-1610194352361-4c81a6a8967e?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1674&q=80" draggable="false" />
  <img class="image" src="https://images.unsplash.com/photo-1618202133208-2907bebba9e1?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1770&q=80" draggable="false" />
  <img class="image" src="https://images.unsplash.com/photo-1495805442109-bf1cf975750b?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1770&q=80" draggable="false" />
  <img class="image" src="https://images.unsplash.com/photo-1548021682-1720ed403a5b?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1770&q=80" draggable="false" />
  <img class="image" src="https://images.unsplash.com/photo-1496753480864-3e588e0269b3?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2134&q=80" draggable="false" />
  <img class="image" src="https://images.unsplash.com/photo-1613346945084-35cccc812dd5?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1759&q=80" draggable="false" />
  <img class="image" src="https://images.unsplash.com/photo-1516681100942-77d8e7f9dd97?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1770&q=80" draggable="false" />
</div>

<a id="source-link" class="meta-link" href="https://camillemormal.com" target="_blank">
  <i class="fa-solid fa-link"></i>
  <span>Source</span>
</a>

<a id="yt-link" class="meta-link" href="https://youtu.be/PkADl0HubMY" target="_blank">
  <i class="fa-brands fa-youtube"></i>
  <span>7 min tutorial</span>
</a>

body {
  height: 100vh;
  width: 100vw;
  background-color: black;
  margin: 0rem;
  overflow: hidden;
}

#image-track {
  display: flex;
  gap: 4vmin;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(0%, -50%); 
  user-select: none; /* -- Prevent image highlighting -- */
}

#image-track > .image {
  width: 40vmin;
  height: 56vmin;
  object-fit: cover;
  object-position: 100% center;
}

/* -- YouTube Link Styles -- */

body.menu-toggled > .meta-link > span {
  color: rgb(30, 30, 30);
}

#source-link {
  bottom: 60px;
}

#source-link > i {
  color: rgb(94, 106, 210);
}

#yt-link > i {
  color: rgb(239, 83, 80);
}

.meta-link {
  align-items: center;
  backdrop-filter: blur(3px);
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  bottom: 10px;
  box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.1);
  cursor: pointer;  
  display: inline-flex;
  gap: 5px;
  left: 10px;
  padding: 10px 20px;
  position: fixed;
  text-decoration: none;
  transition: background-color 400ms, border-color 400ms;
  z-index: 10000;
}

.meta-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.meta-link > i, .meta-link > span {
  height: 20px;
  line-height: 20px;
}

.meta-link > span {
  color: white;
  font-family: "Rubik", sans-serif;
  font-weight: 500;
}

const track = document.getElementById("image-track");

const handleOnDown = e => track.dataset.mouseDownAt = e.clientX;

const handleOnUp = () => {
  track.dataset.mouseDownAt = "0";  
  track.dataset.prevPercentage = track.dataset.percentage;
}

const handleOnMove = e => {
  if(track.dataset.mouseDownAt === "0") return;
  
  const mouseDelta = parseFloat(track.dataset.mouseDownAt) - e.clientX,
        maxDelta = window.innerWidth / 2;
  
  const percentage = (mouseDelta / maxDelta) * -100,
        nextPercentageUnconstrained = parseFloat(track.dataset.prevPercentage) + percentage,
        nextPercentage = Math.max(Math.min(nextPercentageUnconstrained, 0), -100);
  
  track.dataset.percentage = nextPercentage;
  
  track.animate({
    transform: `translate(${nextPercentage}%, -50%)`
  }, { duration: 1200, fill: "forwards" });
  
  for(const image of track.getElementsByClassName("image")) {
    image.animate({
      objectPosition: `${100 + nextPercentage}% center`
    }, { duration: 1200, fill: "forwards" });
  }
}

/* -- Had to add extra lines for touch events -- */

window.onmousedown = e => handleOnDown(e);

window.ontouchstart = e => handleOnDown(e.touches[0]);

window.onmouseup = e => handleOnUp(e);

window.ontouchend = e => handleOnUp(e.touches[0]);

window.onmousemove = e => handleOnMove(e);

window.ontouchmove = e => handleOnMove(e.touches[0]);