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//
// $Id$
//
// 
// class G4DrawVoxels
//
// Class description:
//
// Utility class for the visualization of voxels in the detector geometry.
// Define G4DrawVoxelsDebug in the environment at compilation for debugging
// information printed to G4cout.

// History:
// 03/08/1999 The G4VisAttributes have been made member data for lifetime
//            reasons / visualisation - L.G (ask John Allison for further
//            explanation).
// 29/07/1999 First comitted version - L.G.
// --------------------------------------------------------------------
#ifndef G4DrawVoxels_HH
#define G4DrawVoxels_HH

#include "G4VisAttributes.hh"
#include "G4VoxelLimits.hh"
#include "G4PlacedPolyhedron.hh"

class G4SmartVoxelHeader;
class G4LogicalVolume;

// ***********************************************************************

class G4DrawVoxels
{
  public: // with description

    G4DrawVoxels();
      // Constructor. It initialises the members data to default colors
      // Copy constructor and assignment operator not supported (array
      // fvoxelcolours ...).

    ~G4DrawVoxels();
      // Destructor NOT virtual. Not a base class.
    
    void DrawVoxels(const G4LogicalVolume* lv) const;
    G4PlacedPolyhedronList* CreatePlacedPolyhedra(const G4LogicalVolume*) const;

    void SetVoxelsVisAttributes(G4VisAttributes&,
                                G4VisAttributes&,
                                G4VisAttributes&);
    void SetBoundingBoxVisAttributes(G4VisAttributes&);

  private:
  
    // Member data
    G4VisAttributes fVoxelsVisAttributes[3];
    G4VisAttributes fBoundingBoxVisAttributes;
    
    void ComputeVoxelPolyhedra(const G4LogicalVolume*,
                               const G4SmartVoxelHeader*,
                                     G4VoxelLimits&,
                                     G4PlacedPolyhedronList*) const;
    
    // Copy constructor Assignment operator not supported
    // (array fvoxelcolours ...)
    G4DrawVoxels(const G4DrawVoxels&);	
    G4DrawVoxels operator=(const G4DrawVoxels&);	
};

#endif
