G4GenericPolycone.hh

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// G4GenericPolycone
//
// Class description:
//
//   Class implementing a GenericPolycone constructed by points with
//          (r,z)coordinates, allows Z 'go back'
//
//
//   G4GenericPolycone( const G4String& name,
//               G4double phiStart,   // initial phi starting angle
//               G4double phiTotal,   // total phi angle
//               G4int    numRZ,      // number corners in r,z space
//               const G4double r[],  // r coordinate of these corners
//               const G4double z[])  // z coordinate of these corners
//
 
// Authors: T.Nikitina, G.Cosmo - CERN
// --------------------------------------------------------------------
#ifndef G4GENERICPOLYCONE_HH
#define G4GENERICPOLYCONE_HH
 
#include "G4GeomTypes.hh"
 
#if defined(G4GEOM_USE_USOLIDS)
#define G4GEOM_USE_UGENERICPOLYCONE 1
#endif
 
#if defined(G4GEOM_USE_UGENERICPOLYCONE)
  #define G4UGenericPolycone G4GenericPolycone
  #include "G4UGenericPolycone.hh"
#else
 
#include "G4VCSGfaceted.hh"
#include "G4PolyconeSide.hh"
 
class G4EnclosingCylinder;
class G4ReduciblePolygon;
class G4VCSGface;
 
class G4GenericPolycone : public G4VCSGfaceted
{
  public:
 
    G4GenericPolycone( const G4String& name,
                             G4double phiStart, // initial phi starting angle
                             G4double phiTotal, // total phi angle
                             G4int    numRZ,    // number corners in r,z space
                       const G4double r[],   // r coordinate of these corners
                       const G4double z[] ); // z coordinate of these corners
 
    ~G4GenericPolycone() override;
 
    EInside Inside( const G4ThreeVector &p ) const override;
    G4double DistanceToIn( const G4ThreeVector &p,
                           const G4ThreeVector &v ) const override;
    G4double DistanceToIn( const G4ThreeVector &p ) const override;
 
    void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;
    G4bool CalculateExtent(const EAxis pAxis,
                           const G4VoxelLimits& pVoxelLimit,
                           const G4AffineTransform& pTransform,
                                 G4double& pmin, G4double& pmax) const override;
 
    G4double GetCubicVolume() override;
    G4double GetSurfaceArea() override;
 
    G4ThreeVector GetPointOnSurface() const override;
 
    G4GeometryType GetEntityType() const override;
 
    G4VSolid* Clone() const override;
 
    std::ostream& StreamInfo(std::ostream& os) const override;
 
    G4Polyhedron* CreatePolyhedron() const override;
 
    G4bool Reset();
 
    // Accessors
 
    inline G4double GetStartPhi()    const;
    inline G4double GetEndPhi()      const;
    inline G4double GetSinStartPhi() const;
    inline G4double GetCosStartPhi() const;
    inline G4double GetSinEndPhi()   const;
    inline G4double GetCosEndPhi()   const;
    inline G4bool IsOpen()           const;
    inline G4int  GetNumRZCorner()   const;
    inline G4PolyconeSideRZ GetCorner(G4int index) const;
 
    G4GenericPolycone(__void__&);
      // Fake default constructor for usage restricted to direct object
      // persistency for clients requiring preallocation of memory for
      // persistifiable objects.
 
    G4GenericPolycone( const G4GenericPolycone& source );
    G4GenericPolycone& operator=( const G4GenericPolycone& source );
      // Copy constructor and assignment operator.
 
  protected:
 
    // Generic initializer, called by all constructors
 
    void Create( G4double phiStart,        // initial phi starting angle
                 G4double phiTotal,        // total phi angle
                 G4ReduciblePolygon* rz ); // r/z coordinate of these corners
 
    void CopyStuff( const G4GenericPolycone& source );
 
    // Methods for random point generation
 
    void SetSurfaceElements() const;
 
  protected:
 
    // Here are our parameters
 
    G4double startPhi;            // Starting phi value (0 < phiStart < 2pi)
    G4double endPhi;              // end phi value (0 < endPhi-phiStart < 2pi)
    G4bool   phiIsOpen = false;   // true if there is a phi segment
    G4int    numCorner;           // number RZ points
    G4PolyconeSideRZ* corners = nullptr;  // corner r,z points
 
    G4EnclosingCylinder* enclosingCylinder = nullptr; // Our quick test
 
    struct surface_element { G4double area = 0.; G4int i0 = 0, i1 = 0, i2 = 0; };
    mutable std::vector<surface_element>* fElements = nullptr;
};
 
#include "G4GenericPolycone.icc"
 
#endif
 
#endif