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<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
  <defs> 
    <filter id="goo">
      <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur" />
      <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 200 -20" result="goo" />
      <feBlend in="SourceGraphic" in2="goo" />
    </filter>
  </defs>
</svg>

<svg id="base" class="blobby-bit" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><path d="M227.82 145.83c-.67-3.55-3-5.64-6.11-5.63a2.6 2.6 0 0 0-1.58-.9c-1.7-.35-3.81-.38-5.61-.93a4.44 4.44 0 0 0 .7-2.24c-.47-10.43-.45-20.93-1.8-31.25-.21-1.56-.43-3.11-.65-4.66-.07-.39-.14-.8-.21-1.18-.8-4.42-1.51-8.91-2.18-13.32-1.39-7.79-2.89-15.57-4.23-23.37-1.31-7.52-3.26-15-7.06-21.51-9.25-15.92-23.77-25.41-40.82-31.35-9.56-3.33-19.49-4.69-29.53-5.66-8.74-.83-17.47-1.05-26.19.51a221.81 221.81 0 0 0-34.13 9.44A50.7 50.7 0 0 0 47.9 26.66C38.74 36.24 32 47.12 28.45 60a468.62 468.62 0 0 0-10.67 50c-1.35 8.33-1.84 16.81-2.63 25.23v.07a24.21 24.21 0 0 1-2.15 3.15c-.51.62-1.13.67-1.95 1l-.13.06a6.64 6.64 0 0 0-3.48 1.08c-4 2.4-5.22 5.14-3.77 10.7a134.61 134.61 0 0 1 4.49 26.39c.13 2.42 1.9 4.83 3.21 7.08.95 1.64 2.65 1.82 4.45 1.23 4.46-1.46 4.56-1.38 5.25 3.24.1.68.17 1.37.24 2.06.78 8.13 1.13 16.33 2.43 24.39 1.66 10.33 4.15 20.5 11.42 28.71a6.51 6.51 0 0 1 1.21 3c.61 3.19 1 6.43 1.62 9.61 1.66 8.08-.69 23.13 5.69 26.86s41.62 7.07 69.28 5.95 62.09 1.42 69.33-2.29c1.89-1.17.5-6.5.53-6.58a61.44 61.44 0 0 0 4.89-20.32c.23-3.69 1.61-6.52 3.32-9.52 2.77-4.87 5.3-9.88 7.91-14.84a83.54 83.54 0 0 0 7.77-23.43c1.57-8.18 1.55-16.66 2.18-25a2.66 2.66 0 0 0 1.22-1.15c.05 0 .06 0 0 0 .53-.1.63-.16 1.14-.22a15.51 15.51 0 0 0 1.89-.32v.43c4.73.72 8.24-1.63 8.86-6a215.51 215.51 0 0 1 5.68-29.12 12.47 12.47 0 0 0 .14-5.62z" fill="#efb28e"/></svg>

<svg id="hair" class="blobby-bit" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><title>blobby</title><path d="M195.5 65.78c2 12-1 79 13 80h.05l.27-.37c1.67-2.07 3.5-4 5.1-6.14a5.51 5.51 0 0 0 1.29-3.14c-.46-10.43-.44-20.93-1.79-31.25-.21-1.56-.43-3.11-.65-4.66-.07-.39-.14-.8-.21-1.18-.8-4.42-1.51-8.91-2.18-13.32-1.39-7.79-2.89-15.57-4.23-23.37-1.31-7.52-3.26-15-7.06-21.51-9.25-15.92-23.77-25.41-40.82-31.35-9.56-3.33-19.49-4.69-29.53-5.66-8.74-.83-17.47-1.05-26.19.51a221.81 221.81 0 0 0-34.13 9.44A50.7 50.7 0 0 0 47.9 26.66C38.74 36.24 32 47.12 28.45 60a468.62 468.62 0 0 0-10.67 50c-1.35 8.33-1.84 16.81-2.63 25.23a4 4 0 0 0 .67 2.45c1.74 2.59 3.6 5.09 5.42 7.63a.14.14 0 0 1 0 .06l-.08-.09c.12.71.32 1.43.42 2.13a23.51 23.51 0 0 0 3.87-10.58c1-8-1-17 1-29s6-41 11-47 16-19 15-19 14-9 23-6 26 5 26 5 10 6 16 5 16.88-5.05 22.94-5 22.06 2 26.06 2 27.05 10.95 29.05 22.95z" fill="#cd8f3b"/>
</svg>

<svg id="outline" class="blobby-bit" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><path d="M228.43 140.49a6.93 6.93 0 0 0-6.87-3.75H218c0-.15-.05-.29-.07-.43v-2.48c-.39-7.47-.28-15-1.3-22.4-2.18-15.81-4.57-31.61-7.64-47.26a115.77 115.77 0 0 0-3.09-12.4A62.44 62.44 0 0 0 200.51 39a56.27 56.27 0 0 0-18.78-20.77 74.3 74.3 0 0 0-11.54-6.59c-7.44-3.08-14.94-6.4-22.75-8.1-9.1-2-18.53-2.5-27.85-3.31a49.77 49.77 0 0 0-12.38.36c-16.85 2.82-33.45 6.73-48.8 14.56a55.5 55.5 0 0 0-10.47 7.5c-2.6 2.23-4.7 5-7 7.62A66.67 66.67 0 0 0 27 55.41c-3.14 10.35-5.55 20.94-7.86 31.52-3.39 15.5-6.52 31.07-6.61 47a19.21 19.21 0 0 1-.35 2.6 15.18 15.18 0 0 1-2.26.16c-3.47-.32-5.84 1.31-7.57 4.13A15.86 15.86 0 0 0 .89 154.5a64.59 64.59 0 0 1 3.47 17.6 37.46 37.46 0 0 0 2.11 11.25c1.65 4.59 4.81 7.41 9.64 5.92a3.64 3.64 0 0 1 1.43 0c.86 8.49 1.86 16.59 2.46 24.73.88 11.94 5.17 22.52 11.86 32.3a10.11 10.11 0 0 1 1.44 4.33c1.46 11.65 3.3 23.2 8.11 34.07a3.49 3.49 0 0 1 .15 2.08c.39.07.78.14 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3.14c-1.6 2.12-3.43 4.07-5.1 6.14-1 1.22-1.69 2.76-.1 3.86s2.5-.29 3.26-1.51a16.66 16.66 0 0 1 2-3.25c1.43-1.41 3-3 4.76-3.72 4.41-1.74 8.18.42 9 5a12.47 12.47 0 0 1-.12 5.54 215.51 215.51 0 0 0-5.62 29.16c-.62 4.34-4.13 6.69-8.86 6a9.64 9.64 0 0 0 0-2.46c-.2-.75-.94-2-1.17-2-.93.23-2.17.69-2.52 1.43a11.22 11.22 0 0 0-.48 3.76c-.68 8.54-.61 17.21-2.22 25.57a83.54 83.54 0 0 1-7.75 23.42c-2.61 5-5.14 10-7.91 14.84-1.71 3-3.09 5.83-3.32 9.52a61.44 61.44 0 0 1-4.89 20.32c-1.07 2.54-1.81 5.24-3.09 7.66a26.83 26.83 0 0 1-1.77 3 6.68 6.68 0 0 1 1.68.42c.49.19 1 .37 1.48.54a9.5 9.5 0 0 1 .82-1.28l-.28-.11c1.77-4.4 3.2-8.72 5.2-12.75 2.84-5.74 2.84-12 3.77-18.06a14 14 0 0 1 1.92-6c7-10.61 11.59-22.37 15.52-34.38 2.84-8.68 3.58-17.75 4.21-26.81.1-1.37 0-2.89 2.11-2.79 5.22.24 10.6-5 11.43-10.58.65-4.38.91-8.82 1.52-13.21a18.38 18.38 0 0 1 1.48-4.67c3.05-7.24 3.28-14.36-.45-21.38z"/><path d="M217 166.9c-.15 1.14-1 2.18-1.14 3.32-.12.73.41 1.56.77 2.77a22.38 22.38 0 0 0 2-1.62 8.31 8.31 0 0 0 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<svg id="nose" class="blobby-bit" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><path d="M91.62 175.21c0 2.54 2.16 2.2 3.72 2.19 2.85 0 5.76-.43 7.2 3 .13.3.66.4 1 .65 4.09 3.55 9.09 3.13 14 3.35 3 .14 5.5-.52 7.58-3s4.66-4.13 8.29-2.85a2.25 2.25 0 0 0 3.19-2.07 3.24 3.24 0 0 0-2.89-3.95c-3.88-.64-6.42 1.45-9.11 3.8-2.08 1.82-4.51 3.83-7.09 4.39-5.12 1.11-9.95 0-13.45-4.56a8.32 8.32 0 0 0-7.33-3.62H95.5c-1.83.19-3.88.18-3.88 2.67z"/></svg>

<svg id="mouth" class="blobby-bit"xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><path d="M146.92 205c-.69-.38-1.4-1.1-2.08-1.08a19.35 19.35 0 0 0-4.65.73A57.11 57.11 0 0 1 120.4 207c-1.27-.1-2.56-.06-3.83-.05-8.79.11-17.49-.5-26-2.94a9.15 9.15 0 0 0-3-.08l-.76-.17a1 1 0 1 0-.43 1.95l2.1.48a46.13 46.13 0 0 0 17.7 4c8.15.32 16.32 0 24.49.12 5.26.1 9.9-2.25 14.85-3.36.58-.13.94-1.24 1.4-1.95zM129.59 218.65a5.68 5.68 0 0 0-2.3.14c-7 1-14 1.72-21-.66a7.14 7.14 0 0 0-2.17 0c-.13.32-.27.65-.41 1a17.61 17.61 0 0 0 2.52 2.08c6.45 3.53 13.37 2.34 20.2 1.85a8.62 8.62 0 0 0 3.37-1 2.45 2.45 0 0 0 .9-1.91 2 2 0 0 0-1.11-1.5z"/></svg>

<svg id="chin" class="blobby-bit" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><path d="M149.6 255.92c-.32.1-.53.56-.76.87-4.21 5.66-9.68 9.35-16.79 9.81a244.51 244.51 0 0 1-24.79.81c-10.15-.37-19.58-3.33-27.15-10.67l-.08-.06c-.09-.13-.19-.25-.27-.39a1 1 0 0 0-1.16-.41 1.74 1.74 0 0 1-.27-.14c0 .13-.08.26-.12.38a1 1 0 0 0-.16 1.21c0 1.64 1.22 2.61 2.28 3.5 7 6 15.22 9.63 24.44 9.95 8.94.31 17.92-.16 26.88-.4 5.67-.15 10.42-2.91 14.81-6.1 2.26-1.64 4-4.06 5.76-6.3.42-.53 0-1.73 0-2.62a24.29 24.29 0 0 0-2.62.56z"/></svg>

<svg id="left-eye" class="blobby-bit" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><path d="M91.72 131.48s-13.22 10.3-34.22 3.3c5-5 19.5-16.58 34.22-3.3z" fill="#fff"/><path d="M80.77 132c-.36-.8-1.9-1.08-2.92-1.58-.17-.08-.42 0-.57-.12-.53-.36-1.5-.87-1.44-1.13a2.74 2.74 0 0 1 1.23-1.73 4.56 4.56 0 0 1 2.84-.48c2.89.84 5.72 1.9 8.54 3a7.8 7.8 0 0 1 1.13.55c.34.32.67.66 1 1a1 1 0 0 0 .75.34 1 1 0 0 0 .37-.08l.25.14a2.27 2.27 0 0 0-.06-.25l.1-.07a1 1 0 0 0 .08-1.41 18.12 18.12 0 0 0-1.58-1.58 9.42 9.42 0 0 0-6.94-3.94 55.79 55.79 0 0 0-9.14 0c-6 .59-11.58 2.31-16.09 6.57a8.62 8.62 0 0 0-1.9 2.21 1.76 1.76 0 0 0-.11.87 1 1 0 0 0-.05 1.34 1 1 0 0 0 .74.35 1 1 0 0 0 .65-.25l1-.87c1.76-1.29 3.4-2.74 5.17-4a37.08 37.08 0 0 1 3.8-2.06c.84 6.06 4.49 8.63 9.68 7.33 1.84-.49 4.06-2.87 3.47-4.15zM56.65 113.63c7.84-.62 15.67-1.4 23.5-2 3.41-.26 6.84-.2 10.24-.45 1-.07 2.6-.54 2.76-1.14a2.06 2.06 0 0 0-2.24-2.7c-5.09.18-10.18.47-15.27.82-2 .14-4.08.54-6.11.82-4.58.62-9.16 1.2-13.72 1.91a4.57 4.57 0 0 0-1.45.57l-.43.06a1 1 0 0 0-.78.6 1 1 0 0 0 0 .46 1.22 1.22 0 0 0 .13.38 1 1 0 0 0 .83.46h.13l.58-.08a5.89 5.89 0 0 0 1.83.29z"/></svg>

<svg id="right-eye" class="blobby-bit" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 231.19 292.49"><path d="M140.65 130.92s9 6.15 16 5.86 13.91-1.35 16.46-3.22c0 0-4.89-8-12-7.73s-14.8-.83-20.46 5.09z" fill="#fff"/><path d="M135.27 108.24v1.21l.19.05a1 1 0 0 0 .79.42h.87c2.53.59 5 1.22 7.61 1.63 8.39 1.32 17.16-1.35 25.36 2.41.37.17.95-.14 1.54-.46h.12a1 1 0 0 0 .21-2l-.27-.06a1.42 1.42 0 0 0-.62-.56 34.69 34.69 0 0 0-7-1.84c-8.37-1.05-16.93.64-25.26-1.61a4.73 4.73 0 0 0-2.62.52 1 1 0 0 0-.41.15zM173.07 131.3a5.69 5.69 0 0 0-2.43-2.62c-7.35-5.09-15.51-5.49-23.79-3.39-2.73.69-5.14 2.81-7.55 4.49-.51.35-.37 1.63-.53 2.48h.11a1 1 0 0 0 1 .76 1 1 0 0 0 .9-.57 8 8 0 0 1 .45-.76c2.21-1.2 4.35-2.52 6.66-3.89h.12c2.19 7.61 3 7.9 9.09 8.5 3.34.33 5.68-1.54 7-5.13l-3.18-.21c-1.58-.09-3.26-.39-3-2.38s2.09-1.56 3.38-1.23c3.45.88 6.78 2.06 9.39 4.69a8.59 8.59 0 0 0 1.29 1c.09.09.18.17.27.27a1 1 0 0 0 .57.29l.32.21v-.21a1.05 1.05 0 0 0 .49-.23 1 1 0 0 0 .05-1.42c-.19-.26-.4-.45-.61-.65z"/></svg>

css

JavaScript

console.clear();

const DAMPING_COEFF = 0.4;
const SPRING_CONSTANT = 0.075;

const globalState = {
  mouseX: 0,
  mouseY: 0,
  updates: []
};

document.addEventListener("mousemove", event => {
  globalState.mouseX = event.pageX;
  globalState.mouseY = event.pageY;
});

document.addEventListener("touchstart", event => {
  globalState.mouseX = event.pageX;
  globalState.mouseY = event.pageY;
});

const createSpring = ({ getTargetX, getTargetY, draw }) => {
  const state = {
    posX: 0,
    posY: 0,
    velX: 0,
    velY: 0
  };

return {
    // consumed by other springs when
    // chaining stuff together
    getX: () => state.posX,
    getY: () => state.posY,

update: () => {
      state.posX += state.velX;
      state.posY += state.velY;

const potentialX = state.posX - getTargetX();
      const potentialY = state.posY - getTargetY();

state.velX += calcVelocity(potentialX, state.velX);
      state.velY += calcVelocity(potentialY, state.velY);

draw(state);
    }
  };
};

const calcVelocity = (potential, currentVelocity) => {
  return potential * -1 * SPRING_CONSTANT - DAMPING_COEFF * currentVelocity;
};

const translateString = (x, y) => {
  return `translate3d(${x}px, ${y}px, 0)`;
};

const composeSprings = ({ seedX, seedY, registerSpring, drawFunctions }) => {
  return drawFunctions.reduce((springs, drawFn) => {
    const prevSpring = springs[springs.length - 1];
    const newSpring = createSpring({
      getTargetX: prevSpring ? prevSpring.getX : seedX,
      getTargetY: prevSpring ? prevSpring.getY : seedY,
      draw: drawFn
    });
    registerSpring(newSpring);
    return [...springs, newSpring];
  }, []);
};

const drawFns = [
  ...document.querySelectorAll('.blobby-bit')
].map(el => {
  const halfX = el.getBoundingClientRect().width / 2;
  const halfY = el.getBoundingClientRect().height / 2;
  return state => {
    el.style.transform = translateString(state.posX - halfX, state.posY - halfY)
  };
});

composeSprings({
  seedX: () => globalState.mouseX,
  seedY: () => globalState.mouseY,
  registerSpring: spring => globalState.updates.push(spring.update),
  drawFunctions: drawFns,
});

(function loop() {
  globalState.updates.forEach(fn => fn());
  requestAnimationFrame(loop);
})();

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