Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URLs added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.

+ add another resource

JavaScript

Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <svg xmlns="http://www.w3.org/2000/svg" class="floating" height="0" width="0">
  <filter id="colormatrix" filterUnits="userSpaceOnUse" x="0" y="0" width="500" height="800">
    <feGaussianBlur stdDeviation="20" />
    <feColorMatrix mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 19 -9" result="cutoff" />
    <feComposite operator="atop" in="SourceGraphic" in2="cutoff" />
  </filter>
  <filter id="component-linear" filterUnits="userSpaceOnUse" x="0" y="0" width="500" height="800">
    <feGaussianBlur stdDeviation="20" />
    <feComponentTransfer result="cutoff">
      <feFuncA type="linear" slope="19" intercept="-9" />
    </feComponentTransfer>
    <feComposite operator="atop" in="SourceG forraphic" in2="cutoff" />
  </filter>
  <filter id="component-discrete" filterUnits="userSpaceOnUse" x="0" y="0" width="500" height="800">
    <feGaussianBlur stdDeviation="20" />
    <feComponentTransfer>
      <feFuncA type="discrete" tableValues="0 1" />
    </feComponentTransfer>
    <feGaussianBlur id="post-blur" stdDeviation="1" result="cutoff" />
    <feComposite operator="atop" in="SourceGraphic" in2="cutoff" />
  </filter>
</svg>

<svg xmlns="http://www.w3.org/2000/svg" class="floating example" viewBox="0 0 500 800">
  <g class="goo fcd">
    <circle class="primitive" r="100" cx="150" cy="400" fill="#ff0000" />
    <circle class="primitive" r="100" cx="350" cy="400" fill="#00ff00" />
    <rect class="primitive move" x="170" y="70" width="160" height="160" fill="#0000ff" />
  </g>
</svg>

<div class="floating example hide">
<div class="goo fcd">
  <div class="primitive" style="background:#ff0000;left:50px;top:300px"></div>
  <div class="primitive" style="background:#00ff00;right:50px;top:300px"></div>
  <div class="primitive move" style="background:#0000ff;left:170px;top:70px"></div>
</div>
</div>

<div id="controls">
  <p>Filtered Objects
  <input name="variant" id="svg" type="radio" checked="checked"></input><label>SVG primitives</label>
  <input name="variant" id="div" type="radio"></input><label>HTML divs</label></p>

  <p><input id="color" type="checkbox"></input>
  <label>Set black and white</label></p>

  <p><label>Blur value</label><br/>
  <input id="deviation" type="range" min="5" max="50" step="5" value="20"></input>
  <span id="devNum">20</span></p>

  <p><label>Cutoff Filter</label><br/>
  <select id="filter-select">
    <option value="fcd" selected="selected">Component/discrete</option>
    <option value="fcl">Component/linear</option>
    <option value="fmx">ColorMatrix</option>
  </select></p>

  <p id="blur-select"><input type="checkbox" checked="checked"></input>
  <label>Post-Blur for discrete</label></p>

  <p id="linear-select"><label>slope</label> <input id="slope" type="number" min="2" step="1" value="19"></input>
  <label>intercept</label> <input id="intercept" type="number" min="-18" max="0" step="1" value="-9"></input> for linear
  <svg id="vis" width="100" height="20">
    <rect x="0.5" y="0.5" width="99" height="19" />
    <line x1="50" y1="20" x2="50" y2="0" style="stroke:red;opacity:0.7" />
    <line id="visSlope" x1="50" y1="20" x2="50" y2="0" />
  </svg></p>

  <p><label>Combining Filter</label><br/>
  <select id="combine-select">
    <option value="atop" selected="selected">Composite atop</option>
    <option value="over">Composite over</option>
    <option value="blend">Blend normal</option>
    <option value="merge">Merge</option>
    <option value="none">none</option>
  </select></p>
</div>

<pre></pre>

              
            
!

CSS

              
                body {
  font-family: sans-serif;
  line-height: 2em;
}
.inactive {
  opacity: 0.5;
}
input[type=number] {
  width: 3em;
}
#vis {
   fill:none;
   stroke:black;
   margin-left:10px;
   vertical-align: middle;
}
pre {
  padding: 10px;
  border: 1px solid black;
  min-height: 10em;
  overflow-x: auto;
  clear: both;
}
.floating {
  float: left;
  margin-right: 30px;
}
.floating.example {
   width: 250px;
   height: 400px;
}
div.goo {
   position: relative;
   width: 500px;
   height: 800px;
   transform: scale(0.5);
   transform-origin: 0% 0%;
}
div.goo div {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 100%;
}
div.goo .move {
  width: 160px;
  height: 160px;
  border-radius: 0;
}
.hide {
  display: none;
}
.bw {
  fill: black;
  background: black !important;
}
.fcd {
  filter: url(#component-discrete);
}
.fcl {
  filter: url(#component-linear);
}
.fmx {
  filter: url(#colormatrix);
}
te(0px, 0px) }
}

              
            
!

JS

              
                const filters = new (function () {
    const fBlur = d3.selectAll('feGaussianBlur:first-child');
    const pBlur = d3.select('feComponentTransfer + feGaussianBlur');
    const fFunc = d3.select('feFuncA[type=linear]');
    const fMatr = d3.select('feColorMatrix');
    let fComp = d3.selectAll('feComposite');
    let active;

    const ids = {
        fcd: '#component-discrete',
        fcl: '#component-linear',
        fmx: '#colormatrix'
    };
    const xmls = new XMLSerializer();
    const pre = d3.select('pre');

    this.activate = function (a) {
        active = ids[a];
        this.showSource();
    };

    this.showSource = function () {
        const source = xmls.serializeToString(d3.select(active).node())
          .replace(/>\s*</g, '><')
          .replace(/<fe/g, '\n<fe')
          .replace(/(<\/\w+>)(<\/\w+>)/g, '$1\n$2')
          .replace(/(<feFuncA|<feMergeNode)/g, '    $1')
          .trim()
        pre.text(source);
    };

    this.blur = function (deviation) {
        fBlur.attr('stdDeviation', deviation);
        this.showSource();
    };

    this.postBlur = function (deviation) {
        pBlur.attr('stdDeviation', deviation);
        this.showSource();
    };

    this.contrast = function (slope, intercept) {
        fFunc.attr('slope', slope)
            .attr('intercept', intercept);
        fMatr.attr('values', [
            "1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0", 
            slope, 
            intercept
        ].join(' '));
        this.showSource();
    };

    this.combinate = function (operator) {
        fComp.remove();
        switch (operator) {
        case 'none':
            return this.showSource();
        case 'merge':
            fComp = d3.selectAll('filter')
                .append('feMerge');
            fComp.append('feMergeNode')
                .attr('in', "cutoff");
            fComp.append('feMergeNode')
                .attr('in', "SourceGraphic");
            return this.showSource();
        case 'blend':
            fComp = d3.selectAll('filter')
                .append('feBlend');
            break;
        default:
            fComp = d3.selectAll('filter')
                .append('feComposite')
                .attr('operator', operator);
            break;
        }
        fComp.attr('in', "SourceGraphic")
            .attr('in2', "cutoff");
        this.showSource();
    };
})();

const tweaks = new (function () {
    this.blur = d3.select('#blur-select');
    const check = d3.select('#blur-select input');
    this.linear = d3.select('#linear-select');
    const selects = d3.selectAll('#linear-select input');
    const slope = selects.filter('#slope');
    const intercept = selects.filter('#intercept');
    const visSlope = d3.select('#visSlope');

    this.activate = function (active) {
        this.blur.classed('inactive', active !== 'fcd');
        check.property('disabled', active !== 'fcd');
        this.linear.classed('inactive', active === 'fcd');
        selects.property('disabled', active === 'fcd');
    };

    this.limit = function () {
        const min = 1 - slope.property('value');
        intercept.attr('min', min);
        if (min > intercept.property('value')) {
            intercept.property('value', min);
        }
        return [
            slope.property('value'), 
            intercept.property('value')
        ];
    };

    this.visualize = function (slope, intercept) {
        visSlope.attr('x1', -intercept * 100 / slope)
            .attr('x2', (1 - intercept) * 100 / slope);
    };
})();

const primitives = d3.selectAll('.primitive');
const examples =  d3.selectAll('.example');
const goo = d3.selectAll('.goo');

d3.selectAll('input[name=variant]').on('change', function () {
    if (!this.checked) return;
    examples.classed('hide', true)
        .filter(this.id).classed('hide', false);
}).dispatch('change');

d3.select('#color').on('change', function () {
    primitives.classed('bw', this.checked);
}).dispatch('change');

d3.select('#filter-select').on('change', function () {
    goo.attr('class', 'goo ' + this.value);
    filters.activate(this.value);
    tweaks.activate(this.value);
}).dispatch('change');

d3.select('#deviation').on('input change', function () {
    d3.select('#devNum').text(this.value);
    filters.blur(this.value);
}).dispatch('change');

tweaks.blur.on('change', function () {
    filters.postBlur(this.checked ? 1 : 0);
}).dispatch('change');

tweaks.linear.on('change', function () {
    const params = tweaks.limit();
    tweaks.visualize.apply(tweaks, params);
    filters.contrast.apply(filters, params);
}).dispatch('change');

d3.select('#combine-select').on('change', function (e) {
  filters.combinate(this.value);
}).dispatch('change');

function tweenFactory (forth) {
    return function () {
        let interpolator;
        const node = this,
            from = forth ? 0 : 500,
            to   = forth ? 500 : 0;
        if (this instanceof SVGElement) {
            interpolator = d3.interpolateTransformSvg(
                'translate(0, ' + from + ')',
                'translate(0, ' + to + ')'
            );
            return function (t) {
                node.setAttribute("transform", interpolator(t));
            };
        } else {
            interpolator = d3.interpolateTransformCss(
                'translate(0px, ' + from + 'px)',
                'translate(0px, ' + to + 'px)'
            );
            return function (t) {
                node.style.transform = interpolator(t);
            };
        }
    };
}

d3.selectAll('.move').transition()
    .on('start', function repeat () {
        d3.active(this)
            .duration(2000)
            .ease(d3.easeSinInOut)
            .tween('forth', tweenFactory(true))
        .transition()
            .duration(2000)
            .ease(d3.easeSinInOut)
            .tween('back', tweenFactory(false))
        .transition()
            .on('start', repeat);
    });
              
            
!
999px

Console