/**
  * Return the number of MFFloat items in the skyAngle field.
  *
  * @return the number of MFFloat items in the skyAngle field.
  */
 public int getNumSkyAngle() {
   if (skyAngle == null) {
     skyAngle = (MFFloat) getField("skyAngle");
   }
   return (skyAngle.getSize());
 }
 /**
  * Return the number of MFFloat items in the groundAngle field.
  *
  * @return the number of MFFloat items in the groundAngle field.
  */
 public int getNumGroundAngle() {
   if (groundAngle == null) {
     groundAngle = (MFFloat) getField("groundAngle");
   }
   return (groundAngle.getSize());
 }