//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
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//
// $Id: unionSubscriber.cc,v 1.2 2002/06/03 12:09:35 radoone Exp $
// GEANT4 tag $Name: geant4-05-00 $
//
// 
// --------------------------------------------------------------
// Comments
//
// --------------------------------------------------------------
//
#include "BooleanSolidTypeSubscriber.hh"

#include "boolean_union.hh"

#include "G4UnionSolid.hh"

class unionSubscriber : public BooleanSolidTypeSubscriber
{
public:
  unionSubscriber() {
    Subscribe( "union" );
  }
  virtual ~unionSubscriber() {
  }
  
  // The activation callback invoked by SAXProcessor whenever it has
  // a new object created from XML and a corresponding subcriber exists
  virtual void Activate( const SAXObject* object ) {
    
    const boolean_union* bu = dynamic_cast<const boolean_union*>( object );
    
    // First, let the base class extract the data
    BooleanSolidTypeSubscriber::Activate( object );
    
    // At this moment both constituent solids are ready
    // Let's check whether we need to apply any transformations
    G4VSolid* solid_union = 0;
    bool useTransform = false;
    G4ThreeVector translat;
    G4RotationMatrix transrot;
    
    if( m_translation != 0 ) {
      translat = *m_translation;
      useTransform = true;
    }
    
    if( m_rotation != 0 ) {
      transrot = *m_rotation;
      useTransform = true;
    }

    if( useTransform ) {    
      G4Transform3D transform( transrot, translat );
      solid_union = new G4UnionSolid( bu->get_name(), m_first, m_second, transform );
    } else {      
      solid_union = new G4UnionSolid( bu->get_name(), m_first, m_second );
    }
    
    GDMLProcessor::GetInstance()->AddSolid( bu->get_name(), solid_union );
    delete object;
  }
};

DECLARE_SUBSCRIBER_FACTORY(unionSubscriber)