jQuery set tranform3d effect

Trying to create this mouse tracking effect - which causes a transform3d change on the block and contents - and also adds a flash light where the mouse is.

How would you write this in vanilla js so it's stable - I am not sure on the formula used to calculate these degree changes - as they seem to go min -8 to max 9 degrees.

https://jsfiddle.net/qzo3ck5m/46/

var myElement = $("#p1");

function setTranslate(xPos, yPos, zPos, el) {
  console.log("test");
  el.style.transform = `translate3d(0, 0, 0) scale3d(1, 1, 1) rotateX(${xPos}deg) rotateY(${yPos}deg) rotateZ(0deg) skew(0deg, 0deg)`;
}


myElement.mousemove(function(event) {
  console.log("mousemoveY---", event.clientX, event.clientY);

  let y = event.clientY;
  let x = event.clientX;

  var position = {
    top: myElement[0].offsetTop,
    left: myElement[0].offsetLeft
  };

  console.log("x", x);
  console.log("y", y);

  console.log("position", position);

  let degx = position.left - x;
  let degy = position.top - y;

  console.log("degx", degx);
  console.log("degy", degy);

  let fullDegrees = 8;

  setTranslate(-degx / 20, -degy / 20, 0, myElement[0]);
});


myElement.mouseleave(function() {
  console.log("mouseleave");
  setTranslate(0, 0, 0, myElement[0]);
});

.container {
  padding: 40px;
}

.blockwrapper {
  will-change: transform;
  transform: translate3d(0, 0, 0) scale3d(1, 1, 1) rotateX(0deg) rotateY(0deg) rotateZ(0deg) skew(0deg, 0deg);
  margin: 10px;
}

.block {
  background-color: skyblue;
  width: 160px;
  height: 160px;
}

.moved {
  background-color: pink;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<div class="container">
  <div class="blockwrapper">
    <div class="block moved">Moved</div>
  </div>
  <div id="p1" class="blockwrapper">
    <div class="block">Movable</div>
  </div>
</div>

Solution

How about calculating the distance between the center of the block and the cursor position?

Also, if you want to use jQuery, use the $.fn.on method to attach the listeners.

let sensitivity = 0.5;

function setTranslate($el, x, y, z=0) {
  $el.css({
    transform: `rotateX(${x}deg) rotateY(${y}deg) rotateZ(${z}deg)`
  });
}

$('.blockwrapper').on({
  mousemove: function(event) {
    const $block = $(event.currentTarget).find('.block');
    const $spotlight = $block.find('.spotlight');
  
    let { clientX: x, clientY: y } = event;
    let rect = $block[0].getBoundingClientRect();

    // Calculate the center of the element
    let centerX = rect.left + rect.width / 2;
    let centerY = rect.top + rect.height / 2;

    // Calculate the relative position from the center
    let deltaX = (x - centerX);
    let deltaY = (y - centerY);

    // Calculate the rotation angles to move away from the cursor
    let rotateX = -deltaY * sensitivity; // Invert to tilt away
    let rotateY = deltaX * sensitivity;  // Invert to tilt away

    setTranslate($block, rotateX, rotateY);

    // Move the spotlight
    let spotlightSize = $spotlight.width();
    let spotlightX = x - rect.left - spotlightSize / 2;
    let spotlightY = y - rect.top - spotlightSize / 2;

    $spotlight.css({
      transform: `translate(${spotlightX}px, ${spotlightY}px)`,
      opacity: 1
    });
  },
  mouseleave: function(event) {
    const $block = $(event.currentTarget).find('.block');
    const $spotlight = $block.find('.spotlight');
  
    setTranslate($block, 0, 0);

    // Hide the spotlight
    $spotlight.css({ opacity: 0 });
  }
});

body {
  background: #000;
}

.container {
  padding: 0.5rem;
}

.blockwrapper {
  display: inline-block;
  perspective: 1000px;
  position: relative;
  overflow: visible;
  margin: 0.5rem;
  background: red;
  width: fit-content;
  border-radius: 2rem;
  will-change: transform;
  transform: translate3d(0, 0, 0) scale3d(1, 1, 1) rotateX(0deg) rotateY(0deg) rotateZ(0deg) skew(0deg, 0deg);
}

.block {
  position: relative;
  z-index: 1;
  overflow: hidden;
  width: 120px;
  height: 120px;
  padding: 1rem;
  border: thin solid #444;
  border-radius: 1.8rem;
  background-color: #222;
  color: #eee;
  transition: transform 0.5s ease;
}

.spotlight {
  position: absolute;
  top: 0;
  left: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  pointer-events: none;
  background: rgb(255,255,0);
  background: radial-gradient(circle, rgba(255,255,0,0.5) 0%, rgba(255,255,0,0.1) 25%, transparent 75%);
  transform: translate(-50%, -50%);
  transition: opacity 0.2s ease;
  z-index: 2;
  opacity: 0;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<div class="container">
  <div class="blockwrapper">
    <div class="block">
      Movable #1
      <div class="spotlight"></div>
    </div>
  </div>
  <div class="blockwrapper">
    <div class="block">
      Movable #2
      <div class="spotlight"></div>
    </div>
  </div>
  <div class="blockwrapper">
    <div class="block">
      Movable #3
      <div class="spotlight"></div>
    </div>
  </div>
</div>