package org.lcsim.detector.converter.compact;
   
   import org.lcsim.geometry.compact.Detector;
   import org.lcsim.geometry.compact.Subdetector;
   import org.lcsim.geometry.subdetector.TubeSegment;
   import org.lcsim.detector.IPhysicalVolume;
   import org.lcsim.detector.material.IMaterial;
   import org.lcsim.detector.ILogicalVolume;
   import org.lcsim.detector.solids.Tube;
  import org.lcsim.detector.PhysicalVolume;
  import org.lcsim.detector.IPhysicalVolumeNavigator;
  import org.lcsim.detector.PhysicalVolumeNavigatorStore;
  import org.lcsim.detector.IPhysicalVolumePath;
  import org.lcsim.detector.DetectorElement;
  import org.lcsim.detector.LogicalVolume;
  
  public class TubeSegmentConverter extends AbstractSubdetectorConverter implements ISubdetectorConverter
  {
  
      public void convert( Subdetector subdet, Detector detector )
      {
          // Cast to subtype.
          TubeSegment tube = ( TubeSegment ) subdet;
  
          // Get the world volume.
          IPhysicalVolume world = detector.getWorldVolume();
  
          // Get the world volume fill material.
          IMaterial matWorld = world.getLogicalVolume().getMaterial();
  
          // Create the Subdetector's envelope LogicalVolume.
          ILogicalVolume envelope = buildEnvelope( tube, matWorld );
  
          // Create the PhysicalVolume.
          new PhysicalVolume( tube.getTransform(), tube.getName(), envelope, world.getLogicalVolume(), subdet
                  .getSystemID() );
  
          // Setup the geometry.
          IPhysicalVolumeNavigator nav = PhysicalVolumeNavigatorStore.getInstance().getDefaultNavigator();
          IPhysicalVolumePath path = nav.getPath( tube.getName() );
  
          // Create the Subdetector's DetectorElement.
          if ( tube.getDetectorElement() != null )
          {
              ( ( DetectorElement ) tube.getDetectorElement() ).setSupport( path );
          }
      }
  
      private ILogicalVolume buildEnvelope( TubeSegment tubeSeg, IMaterial material )
      {
          Tube tube = new Tube( tubeSeg.getName() + "_envelope_tube",
                                tubeSeg.getInnerRadius(),
                                tubeSeg.getOuterRadius(),
                                tubeSeg.getZHalfLength() );
  
          LogicalVolume logvol = new LogicalVolume( tubeSeg.getName() + "_envelope", tube, material );
  
          return logvol;
      }
  
      public Class getSubdetectorType()
      {
          return TubeSegment.class;
      }
  }