//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
//
// $Id: G4UnionSolid.hh,v 1.10 2006/06/29 18:43:37 gunter Exp $
// GEANT4 tag $Name: geant4-09-04-beta-01 $
//
//
// class G4UnionSolid
//
// Class description:
//
// Class for description of union of two CSG solids.

// History: 
//
// 12.09.98 V.Grichine: created
//
// --------------------------------------------------------------------
#ifndef G4UNIONSOLID_HH
#define G4UNIONSOLID_HH

#include "G4BooleanSolid.hh"
#include "G4VSolid.hh"

#include "G4RotationMatrix.hh"
#include "G4ThreeVector.hh"
#include "G4Transform3D.hh"
#include "G4AffineTransform.hh"

class G4UnionSolid : public G4BooleanSolid
{
  public:  // with description

    G4UnionSolid( const G4String& pName,
                        G4VSolid* pSolidA ,
                        G4VSolid* pSolidB   ) ;

    G4UnionSolid( const G4String& pName,
                        G4VSolid* pSolidA ,
                        G4VSolid* pSolidB ,
                        G4RotationMatrix* rotMatrix,
                  const G4ThreeVector& transVector    ) ;

    G4UnionSolid( const G4String& pName,
                        G4VSolid* pSolidA ,
                        G4VSolid* pSolidB ,
                  const G4Transform3D& transform   ) ;

    virtual ~G4UnionSolid() ;

    virtual G4GeometryType  GetEntityType() const ;

  public:  // without description

    G4UnionSolid(__void__&);
      // Fake default constructor for usage restricted to direct object
      // persistency for clients requiring preallocation of memory for
      // persistifiable objects.

    G4bool CalculateExtent( const EAxis pAxis,
                            const G4VoxelLimits& pVoxelLimit,
                            const G4AffineTransform& pTransform,
                                  G4double& pMin, G4double& pMax ) const ;
       
    EInside Inside( const G4ThreeVector& p ) const ;

    G4ThreeVector SurfaceNormal( const G4ThreeVector& p ) const ;

    G4double DistanceToIn( const G4ThreeVector& p,
                           const G4ThreeVector& v  ) const ;

    G4double DistanceToIn( const G4ThreeVector& p ) const ;

    G4double DistanceToOut( const G4ThreeVector& p,
                            const G4ThreeVector& v,
                            const G4bool calcNorm=false,
                                  G4bool *validNorm=0,
                                  G4ThreeVector *n=0 ) const ;

    G4double DistanceToOut( const G4ThreeVector& p ) const ;


    void ComputeDimensions(       G4VPVParameterisation* p,
                            const G4int n,
                            const G4VPhysicalVolume* pRep ) ;
                                   
    void DescribeYourselfTo ( G4VGraphicsScene& scene ) const ;
    G4Polyhedron* CreatePolyhedron () const ;
    G4NURBS*      CreateNURBS      () const ;

};

#endif