/**
  * Sets the pointShader.
  *
  * @param pointShader The pointShader to set
  */
 public void setPointShader(PointShader pointShader) {
   this.pointShader = pointShader;
   if (pointShader != null) {
     pointRadius = pointShader.getPointRadius();
     outlineFraction = pointShader.getOutlineFraction();
   }
 }