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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

            
              <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
<button onclick='init()'>randomize</button><br>
<span id="donut"></span>



            
          
!

CSS

            
               label {
    display: block;
  }
  span {
    display: inline-block;
  }
  path.label {
    stroke-width: 1.4;
    stroke: black;
  }
  text {
    font-size: 16px;
    font-family: arial;
    dominant-baseline: middle;
    text-anchor: middle;  
  }
            
          
!

JS

            
              init();  

function init(){

  let count = 3 + Math.floor(Math.random() * 3);  
  let data = Array(count).fill(0).map((d, i) => {
    return { value: 111 + 111*Math.random(), selected: true }
  });

  let size = 300, time = 500; 
  let colors = d3.scaleOrdinal(d3.schemeCategory10);
  let donut =  d3.select('#donut').html(' ');
    
  donut.append('span').selectAll('input')
    .data(data).enter()
    .append('label').style('background-color', (d, i) => colors(i))
    .append('input').attr('type', 'checkbox').attr('checked', true)
    .on("change", function (d) { 
      update(d.selected = this.checked); 
    });

  let svg = donut.append('span').append("svg")
              .attr("viewBox", `-${size} -${size/2} ${size*2} ${size}`).attr("height", size);


  let pie = d3.pie().sort(null);
  let arc = d3.arc().innerRadius(size/3.1-30).outerRadius(size/3.1)
                    .cornerRadius(33);
  let arc2 = d3.arc().innerRadius(size/2.7).outerRadius(size/2.7);
  let arc3 = d3.arc().innerRadius(size/2.2).outerRadius(size/2.2);
  let line = d3.line();

  let d = pie(data.map(d => d.value)).map(d=>{
      d.value &&(d.endAngle+=0.3);
      return d;
  });
    
  let groupsl = svg.selectAll("g.l").data(d)
                  .enter().append("g").attr('opacity', 1);
  let groupsr = svg.selectAll("g.r").data(d)
                  .enter().append("g").attr('opacity', 1);
  let sectorsl = groupsl.append("path").classed("sectorl", true)
    .attr("fill", (d, i) => colors(i));
    
  let sectorsr = groupsr.append("path").classed("sectorr", true)
                      .attr("fill", (d, i) => colors(i));

  let titlesPaths = groupsl.append("path").classed("label", true);

  let titlesTexts = groupsl.append("text").text(d => d.value.toFixed(0));

  let totalText = svg.append('text').style('font-size', 22).attr('y', 2);

               
  sectorsl.transition().duration(time).attrTween('d', growSectorsPathsl); 
  sectorsr.transition().duration(time).attrTween('d', growSectorsPathsr); 
  titlesPaths.transition().duration(time).attr('opacity', 1)
             .attrTween('d', growTitlesPaths); 

  titlesTexts.transition().duration(time)
          .attrTween("x", tweenTitlesTextsX)
          .attrTween("y", tweenTitlesTextsY);
          
  totalText.datum(calcTotal()).transition().duration(time)
           .tween("text", interpolateTotal)

  function update() {
      d = pie(data.map(d => d.selected ? d.value : 0)).map(d=>{
          d.value &&(d.endAngle+=0.3);
          return d;
      });

      sectorsl.data(d).transition().duration(time)
          .attrTween("d", tweenSectorsPathsl);
      sectorsr.data(d).transition().duration(time)
          .attrTween("d", tweenSectorsPathsr);

      groupsl.data(d).transition().duration(time)
          .attr('opacity', d => d.value ? 1 : 0)
      groupsr.data(d).transition().duration(time)
          .attr('opacity', d => d.value ? 1 : 0)
      
      titlesPaths.data(d).transition().duration(time)
          .attrTween("d", tweenTitlesPaths);

      titlesTexts.data(d).transition().duration(time)
          .attrTween("x", tweenTitlesTextsX)
          .attrTween("y", tweenTitlesTextsY);

      totalText.datum(calcTotal()).transition().duration(time)
           .tween("text", interpolateTotal) 
  }

  function growTitlesPaths(d) {
      let i = d3.interpolate(size/4, size/2.7);
      return t => {
        let r = i(t);
        arc2.innerRadius(r).outerRadius(r);
        return line([arc.centroid(this._current = d),arc2.centroid(d)]);
      }
  }

  function growSectorsPathsl(d) {
     let c = (d.startAngle+d.endAngle)/2;
     let il = d3.interpolate(c, d.startAngle);
     return t => {
       d.startAngle = il(t);
       d.endAngle = c+0.2;
       return arc(this._current = d);
     }; 
  }
    
   function growSectorsPathsr(d) {
     let c = (d.startAngle+d.endAngle)/2;
     let ir = d3.interpolate(c, d.endAngle)
     return t => {
       d.startAngle = c-0.2;
       d.endAngle = ir(t);
       return arc(this._current = d);
     }; 
  }

  function tweenSectorsPathsl(d) {
    let i = lerp(this, d);
    return t => {
        let v = i(t);
        v.endAngle = (v.startAngle+v.endAngle)/2+0.2;
        return arc(v);
    };
  }
    
  function tweenSectorsPathsr(d) {
    let i = lerp(this, d);
    return t => {
        let v = i(t);
        v.startAngle = (v.startAngle+v.endAngle)/2-0.2;
        return arc(v);
    };
  }

  function tweenTitlesPaths(d) {
    let i = lerp(this, d);
    return t => line([arc.centroid(i(t)), arc2.centroid(i(t))]);
  }

  function tweenTitlesTextsX(d) {
    let i = lerp(this, d, '_currentX');
    return t => arc3.centroid(i(t))[0];
  }

  function tweenTitlesTextsY(d) {
    let i = lerp(this, d, '_currentY');
    return t => arc3.centroid(i(t))[1];
  }

  function interpolateTotal(d) {
    let i = lerp(this, d);
    return t => Math.round(i(t));
  }

  function lerp(el, d, key){
    key = key || '_current';
    return d3.interpolate(el[key] || 0, el[key] = d);
  }

  function calcTotal() {
    return data.map(d => d.selected ? d.value : 0)
               .reduce((a,v) => a + v, 0)
  }

  function interpolateTotal(d) {
    let that = d3.select(this);
    let i = lerp(this, d);
    return t => that.text(Math.floor(i(t)))
  }
}
            
          
!
999px

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