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Playing with SVG displacement filter

A Pen By Sota Hatakeyama Pro

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HTML

            
              <div id="container">
  <svg version="1.1" xmlns="http://www.w3.org/2000/svg"
       viewBox="0 0 200 200" width="200" height="200">
    <defs>
      <svg id="chooblarin" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><g stroke="#000" stroke-width="8"><path d="M88 236a54 64 0 0 0 108 0zm228 0a54 64 0 0 0 108 0z"/><path d="M68 335h376m-367 0a196 208 0 0 0 358 0m-318 41h279m-250-26v52m54-52v80m56-80v86m56-86v80m54-80v52M16 256a240 240 0 1 0 480 0 240 240 0 1 0-480 0" fill="none"/></g></svg>

      <svg id="captain" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><g stroke="#000" stroke-width="8" fill="none"><path fill="#E2CACD" d="M16 256a240 240 0 1 0 480 0 240 240 0 1 0-480 0"/><path fill="#fff" d="M68 335h376m-367 0a196 208 0 0 0 358 0m-318 41h279m-250-26v52m54-52v80m56-80v86m56-86v80m54-80v52"/><path fill="#000" d="M110 251a30 32 0 0 0 64 0zm228 0a30 32 0 0 0 64 0z"/><g stroke="#644a36"><path d="M25.2 280a232 232 0 0 0 461.6 0"/><path d="M186 478a320 120 0 0 1 140 0 240 240 0 0 1-140 0z" fill="#644A36"/></g><g stroke="#1d2b3b"><path d="M17.2 280a240 240 0 1 1 477.6 0A200 174 0 0 1 256 290a200 174 0 0 1-238.8-10zM88 236a54 64 0 0 0 108 0zm228 0a54 64 0 0 0 108 0z" fill="#234e8c"/><path d="M118 236L88 86m306 150l30-150"/><path d="M256 50h10l44 106h-20l-14-28h-40l-14 28h-20l44-106h10" fill="#fff"/><path d="M256 84l10 24h-20z" fill="#436195"/></g></g></svg>
      
      <svg id="ironman" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><g stroke="#000" stroke-width="8" fill="none"><path d="M16 256a240 240 0 1 0 480 0 240 240 0 1 0-480 0" fill="#8f1e13"/><path d="M256 140h55l20-88a220 220 0 0 1-4 418H179a220 220 0 0 1 4-418l20 88z" fill="#fde674"/><path d="M84 236h344" stroke="#aa8d65"/><path d="M88 236a54 64 0 0 0 108 0zm228 0a54 64 0 0 0 108 0zM68 335h376m-367 0a196 208 0 0 0 358 0m-318 41h279m-250-26v52m54-52v80m56-80v86m56-86v80m54-80v52" fill="#fff"/></g></svg>
      
      <filter id="displace">
        <feTurbulence type="fractalNoise"
                      baseFrequency="0.01"
                      numOctaves="2"
                      result="turbulence" />
        <feDisplacementMap scale="10"
                           xChannelSelector="R"
                           yChannelSelector="G"
                           in="SourceGraphic"
                           in2="turbulence" />
      </filter>
    </defs>

    <g id="target" style="filter: url(#displace);">
      <use xlink:href="#chooblarin"></use>
    </g>

  </svg>

  <form class="choices">
    <input type="radio" id="choice-chooblarin"
           name="choice" value="chooblarin" checked>
    <label for="choice-chooblarin">chooblarin</label>

    <input type="radio" id="choice-captain"
           name="choice" value="captain">
    <label for="choice-captain">captain</label>

    <input type="radio" id="choice-ironman"
           name="choice" value="ironman">
    <label for="choice-ironman">ironman</label>
  </form>

  <div class="controls">
    <h4>turbulence</h4>
    <label>baseFrequency: </label>
    <input class="control turb-freq"
           type="range" 
           min="0" max="1.0" value="0.01" step="0.0001">

    <label>numOctaves: </label>
    <input class="control turb-oct"
           type="range" 
           min="0" max="5" value="2" step="1">

    <h4>displacement map</h4>
    <label>scale: </label>
    <input class="control scale" 
           type="range" 
           min="1" max="100" value="10" step="0.0001">
  </div>

</div>
!

CSS

            
              * {
  margin: 0;
}

body {
  font-family: Helvetica, serif;
  color: #2d2d2d;
}

h4 { font-size: 1.4rem; line-height: 1.5;  letter-spacing: -.05rem; }

input[type="radio"] {
  margin-left: 10px;
}

input[type="range"] {
  display: block;
  margin: 0.5rem 1.2rem;
}

.choices {
  color: #676767;
  padding: 12px;
}

#container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 1rem 0.5rem;
}

.controls {
  margin-top: 1rem;
  padding: 0.7rem 2rem;
  border: 1px solid #ccc;
}

.controls label {
  display: block;
  margin: .5rem;
  font-weight: 600;
}
!

JS

            
              console.clear();

const target = document.querySelector('#target use')

const choices = document.querySelectorAll('.choices input');

const turbulence 
  = document.querySelector('#displace feTurbulence');
const displacement 
  = document.querySelector('#displace feDisplacementMap');

const turbFreqControl 
  = document.querySelector('.control.turb-freq');
const turbOctControl 
  = document.querySelector('.control.turb-oct');
const displacementScaleControl
  = document.querySelector('.control.scale');

const { Observable } = Rx;

Observable
  .fromEvent(choices, 'change')
  .subscribe(({ target: { value } }) => {
    target.setAttribute('xlink:href', `#${value}`);
  });

Observable
  .fromEvent(turbFreqControl, 'input')
  .throttleTime(10)
  .subscribe(({ target }) => {
    turbulence.setAttribute('baseFrequency', target.value);
  });

Observable
  .fromEvent(turbOctControl, 'input')
  .throttleTime(10)
  .subscribe(({ target }) => {
    turbulence.setAttribute('numOctaves', target.value);
  });

Observable
  .fromEvent(displacementScaleControl, 'input')
  .throttleTime(10)
  .subscribe(({ target }) => {
    displacement.setAttribute('scale', target.value);
  });
!
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