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CSS

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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

              
                <div id="grid"></div>

<svg id="base-eye" class="eye" viewbox="0 0 1000 1000" xmlns="http://www.w3.org/2000/svg" fill="black">
  <clipPath id="lids">
    <path id="lids-path"
      stroke-linejoin="round" stroke-linecap="round"
      d="M 50 500 Q 500 0 950 500 Q 500 850 50 500"
    />
  </clipPath>
  <g clip-path="url(#lids)">
    <rect class="whites" width="1000" height="1000" fill="#fff"/>
    <g class="pupil-group">
      <circle class="pupil" cx="500" cy="500" r="150" fill="#000"/>
      <circle class="glint" cx="450" cy="450" r="20" fill="#fff"/>
    </g>
  </g>
  <use href="#lids-path" class="lids" stroke="#000" stroke-width="20" />
</svg>
              
            
!

CSS

              
                .eye {
  --pupil-x: 0;
  --pupil-y: 0;
  --color-whites: var(--fg, #fff);
  --color-lid: var(--bg, #fff);
  --color-pupil: var(--bg, #000);
  --color-glint: var(--fg, #fff);
  --scale: 0.75;
  max-width: 100%;
  max-height: 100vh;
  fill: none;
  transform: scale(var(--scale));
}
.lids {
  stroke: var(--color-lid);
  stroke-width: 5%;
}
.whites {
  fill: var(--color-whites);
}
.pupil {
  fill: var(--color-pupil);
  cx: 500px;
  cy: 500px;
}
.glint {
  fill: var(--color-glint);
}
.pupil-group {
  transform: translate(calc(var(--pupil-x) * 1px), calc(var(--pupil-y) * 1px));
}
#base-eye {
  display: none;
}
#grid {
  --num-columns: 5;
  --num-rows: 5;
  width: 100%;
  height: 100vh;
  display: grid;
  grid-template-columns: repeat(var(--num-columns), 1fr);
  grid-template-rows: repeat(var(--num-rows), 1fr);
}
body {
  --bg: #111;
  --fg: #fff;
  min-height: 100vh;
  background: var(--bg);
  overflow: hidden;
}

              
            
!

JS

              
                const baseObject = document.getElementById("base-eye");
const grid = document.getElementById("grid");
let eyes, eyeCenters;
let eyeDensity = 5;
let numEyesX, numEyesY;
const center = new THREE.Vector2();
const mousePos = new THREE.Vector2();
const PI = Math.PI;
let maxDist;
const maxEyeTravelX = 275;
const maxEyeTravelY = 100;

init();

function init() {
  window.addEventListener("resize", throttled(handleResize));
  window.addEventListener("mousemove", throttled(handleMouseMove));
  handleResize();
  console.log("init");
}

function handleMouseMove(event) {
  mousePos.set(event.clientX, event.clientY);
  eyes.forEach((eye, i) => {
    const vecToMouse = new THREE.Vector2().subVectors(mousePos, eyeCenters[i]);
    const angle = vecToMouse.angle();
    const dist = mousePos.distanceTo(eyeCenters[i]);
    const distPercent = map(dist, 0, maxDist, 0, 1);
    const clampedMouseX = clamp(vecToMouse.x, maxEyeTravelX * -1, maxEyeTravelX);
    const clampedMouseY = clamp(vecToMouse.y, maxEyeTravelY * -1, maxEyeTravelY);
    const pupilX = map(clampedMouseX, 0, maxEyeTravelX, 0, maxEyeTravelX);
    const pupilY = map(clampedMouseY, 0, maxEyeTravelY, 0, maxEyeTravelY);
    const scale = map(dist, 0, maxDist, 0.5, 1.25);
    
    eye.style.setProperty("--pupil-x", pupilX);
    eye.style.setProperty("--pupil-y", pupilY);
    eye.style.setProperty("--scale", scale);
  });
}

function handleResize() {
  
  // recreate the grid and elements 
  const largeSide = Math.max(innerWidth, innerHeight);
  const size = Math.round(largeSide / eyeDensity);
  numEyesX = Math.ceil(innerWidth / size);
  numEyesY = Math.ceil(innerHeight / size);
  grid.style.setProperty("--num-columns", numEyesX);
  grid.style.setProperty("--num-rows", numEyesY);
  grid.innerHTML = "";
  generateArrowGrid();
  
  center.set(innerWidth * 0.5, innerHeight * 0.5);
  maxDist = center.length() * 2;
  
  // send a fake mouse event to trigger the initial point
  handleMouseMove({clientX: center.x, clientY: center.y});
}

function generateArrowGrid() {
  eyes = [];  
  eyeCenters = [];
  for (let i = 0; i < numEyesX * numEyesY; i += 1) {
    
    // add the eye to the grid
    const newArrow = baseObject.cloneNode(true);
    newArrow.id = `eye-${i}`;
    newArrow.setAttribute("class", "eye");
    grid.appendChild(newArrow);
    eyes.push(newArrow);
    
    // save its center point for use later
    const eyeRect = newArrow.getBoundingClientRect();
    const eyeCenter = new THREE.Vector2(
      eyeRect.left + (newArrow.clientWidth * 0.5),
      eyeRect.top + (newArrow.clientHeight * 0.5),
    );
    eyeCenters.push(eyeCenter);
  }
}

// USEFUL FUNCTIONS
function throttled(fn) {
  let didRequest = false;
  return param => {
    if (!didRequest) {
      requestAnimationFrame(() => {
        fn(param);
        didRequest = false;
      });
      didRequest = true;
    }
  };
}
function map(value, min1, max1, min2, max2) {
  return (value - min1) * (max2 - min2) / (max1 - min1) + min2;
}
function clamp (value, min = 0, max = 1) {
  return value <= min ? min : value >= max ? max : value;
}
              
            
!
999px

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