Function calculateAlternativeShapeData

chapter18/docs/d3-graphviz.js:1051–1062

(datum, prevDatum)

      dictionary[datum.id] = datum;
    }
    function calculateAlternativeShapeData(datum, prevDatum) {
      if (tweenShapes && datum.id in prevDictionary) {
        if ((prevDatum.tag == 'polygon' || prevDatum.tag == 'ellipse' || prevDatum.tag == 'path') && (prevDatum.tag != datum.tag || datum.tag == 'polygon')) {
          if (prevDatum.tag != 'path') {
            datum.alternativeOld = convertToPathData(prevDatum, datum);
          }
          if (datum.tag != 'path') {
            datum.alternativeNew = convertToPathData(datum, prevDatum);
          }
        }
      }
    }
    function calculatePathTweenPoints(datum, prevDatum) {
      if (tweenPaths && prevDatum && (prevDatum.tag == 'path' || datum.alternativeOld && datum.alternativeOld.tag == 'path')) {
        var attribute_d = (datum.alternativeNew || datum).attributes.d;