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//
// G4ReflectedSolid
//
// Class description:
//
// A Reflected solid is a solid that has been shifted from its original
// frame of reference to a new one.

// 23.07.01, V.Grichine - created
// --------------------------------------------------------------------
#ifndef G4ReflectedSolid_HH
#define G4ReflectedSolid_HH

#include "G4VSolid.hh"
#include "G4ThreeVector.hh"
#include "G4Transform3D.hh"

class G4ReflectedSolid : public G4VSolid
{
  public:  // with description

    G4ReflectedSolid( const G4String& pName,
                            G4VSolid* pSolid ,
                      const G4Transform3D& transform ) ;
      // For use in instantiating a transient instance.

    virtual ~G4ReflectedSolid();
      // Virtual destructor.

  public:  // without description 

    // Includes all the methods that a solid requires.

    EInside Inside( const G4ThreeVector& p ) const; 

    void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const;

    G4bool CalculateExtent( const EAxis pAxis,
                            const G4VoxelLimits& pVoxelLimit,
                            const G4AffineTransform& pTransform,
                                  G4double& pMin, G4double& pMax) 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 = nullptr,
                                  G4ThreeVector* n = nullptr ) const;

    G4double DistanceToOut( const G4ThreeVector& p ) const;

    void ComputeDimensions(       G4VPVParameterisation* p,
                            const G4int n,
                            const G4VPhysicalVolume* pRep );

    G4ThreeVector GetPointOnSurface() const;

    G4VSolid* Clone() const;

  public:  // with description 

    virtual G4GeometryType  GetEntityType() const;

    virtual const G4ReflectedSolid* GetReflectedSolidPtr() const;
    virtual       G4ReflectedSolid* GetReflectedSolidPtr();
      // If the Solid is a "G4ReflectedSolid",
      // return a self pointer else return nullptr.

    G4VSolid* GetConstituentMovedSolid() const;

    G4Transform3D GetTransform3D() const; 
    G4Transform3D GetDirectTransform3D() const; 
    void SetDirectTransform3D(G4Transform3D&);
      // Accessors methods.

    std::ostream& StreamInfo(std::ostream& os) const;

  public:  // without description

    G4ReflectedSolid(const G4ReflectedSolid& rhs);
    G4ReflectedSolid& operator=(const G4ReflectedSolid& rhs);
      // Copy constructor and assignment operator.

    void DescribeYourselfTo ( G4VGraphicsScene& scene ) const;
    G4Polyhedron* CreatePolyhedron () const;
    G4Polyhedron* GetPolyhedron    () const;
      // For creating graphical representations (i.e. for visualisation).

  protected:

    G4VSolid*          fPtrSolid = nullptr;
    G4Transform3D*     fDirectTransform3D = nullptr;

    mutable G4bool fRebuildPolyhedron = false;
    mutable G4Polyhedron* fpPolyhedron = nullptr;
      // Caches reflected G4Polyhedron.
};

#endif
