<div id="surface" />
<script>
  var draw = kendo.drawing;
  var geom = kendo.geometry;

  var gradient = new draw.RadialGradient({
    center: [0.5, 0.5],
    radius: 0.6,
    stops: [
      { offset: 0, color: "#ff0000", opacity: 1 },
      { offset: 1, color: "#0000ff", opacity: 0.5 }
    ]
  });

  gradient.addStop(0.5, "#00ff00", 0.8);
  var newStop = gradient.stops[2];
  console.log("Added stop at offset:", newStop.options.offset);

  var rect = new geom.Rect([0, 0], [120, 80]);
  var path = draw.Path.fromRect(rect, {
    stroke: null,
    fill: gradient
  });

  var surface = draw.Surface.create($("#surface"));
  surface.draw(path);
</script>