//
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//
//
// $Id$
//
// class G4LogicalBorderSurface
//
// Class description:
//
// A Logical Surface class for surfaces defined by the boundary
// of two physical volumes.

// History:
// -------
// Created:     1997-06-17
// Author:      John Apostolakis (John.Apostolakis@cern.ch)
//
// --------------------------------------------------------------------
#ifndef G4LogicalBorderSurface_h
#define G4LogicalBorderSurface_h 1

#include <vector>

#include "G4LogicalSurface.hh"
#include "G4VPhysicalVolume.hh"

class G4VPhysicalVolume;
class G4LogicalBorderSurface;

typedef std::vector<G4LogicalBorderSurface*> G4LogicalBorderSurfaceTable;

class G4LogicalBorderSurface : public G4LogicalSurface
{

  public:  // with description

    G4LogicalBorderSurface( const G4String& name,
                                  G4VPhysicalVolume* vol1, 
                                  G4VPhysicalVolume* vol2,
                                  G4SurfaceProperty* surfaceProperty );
    ~G4LogicalBorderSurface();
      // Constructor and destructor

    static G4LogicalBorderSurface* GetSurface( const G4VPhysicalVolume* vol1,
                                               const G4VPhysicalVolume* vol2 );
    inline void SetPhysicalVolumes( G4VPhysicalVolume* vol1,
                                    G4VPhysicalVolume* vol2 );
    inline const G4VPhysicalVolume* GetVolume1() const;
    inline const G4VPhysicalVolume* GetVolume2() const;
      // Generic accessors.

    inline void SetVolume1( G4VPhysicalVolume* vol1 );
    inline void SetVolume2( G4VPhysicalVolume* vol2 );
      // To use with care!

    static void CleanSurfaceTable();
    static const G4LogicalBorderSurfaceTable* GetSurfaceTable();
    static size_t GetNumberOfBorderSurfaces();
    static void DumpInfo(); 
      // To handle the table of surfaces.

    G4int operator==( const G4LogicalBorderSurface &right ) const;
    G4int operator!=( const G4LogicalBorderSurface &right ) const;
      // Operators.

  private:

    G4LogicalBorderSurface(const G4LogicalBorderSurface &right);
    const G4LogicalBorderSurface& operator=(const G4LogicalBorderSurface &right);

  private:

    G4VPhysicalVolume* Volume1;  // Physical Volume pointer on side 1
    G4VPhysicalVolume* Volume2;  // Physical Volume pointer on side 2

    static G4LogicalBorderSurfaceTable theBorderSurfaceTable;
      // The static Table of BorderSurfaces.
};

// ********************************************************************
// Inline methods
// ********************************************************************

#include "G4LogicalBorderSurface.icc"

#endif /* G4LogicalBorderSurface_h */