G4Paraboloid.hh

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//
// G4Paraboloid
//
// Class description:
//
//   A G4Paraboloid represents a solid with parabolic profile with possible
//   cuts along the Z axis.
//
//   Member Data:
//
//      dz              z half lenght
//      r1              radius at -dz
//      r2              radius at  dz
//      r2  > r1
//
//      Equation for the solid:
//        rho^2 <= k1 * z + k2;
//        -dz <= z <= dz
//        r1^2 = k1 * (-dz) + k2
//        r2^2 = k1 * ( dz) + k2
 
// 10.07.2007, L.Lindroos (CERN) - First implementation
// --------------------------------------------------------------------
#ifndef G4PARABOLOID_HH
#define G4PARABOLOID_HH
 
#include "G4GeomTypes.hh"
 
#if defined(G4GEOM_USE_USOLIDS)
#define G4GEOM_USE_UPARABOLOID 1
#endif
 
#if (defined(G4GEOM_USE_UPARABOLOID) && defined(G4GEOM_USE_SYS_USOLIDS))
  #define G4UParaboloid G4Paraboloid
  #include "G4UParaboloid.hh"
#else
 
#include <CLHEP/Units/PhysicalConstants.h>
 
#include "G4VSolid.hh"
#include "G4Polyhedron.hh"
 
class G4Paraboloid : public G4VSolid
{
  public:
 
    G4Paraboloid(const G4String& pName,
                       G4double  pDz,
                       G4double  pR1,
                       G4double  pR2);
 
    ~G4Paraboloid() override;
 
    // Access functions
 
    inline G4double GetZHalfLength() const;
    inline G4double GetRadiusMinusZ() const;
    inline G4double GetRadiusPlusZ() const;
 
    inline G4double GetCubicVolume() override;
    inline G4double GetSurfaceArea() override;
    inline G4double CalculateSurfaceArea() const;
 
    // Modifiers functions
 
    inline void SetZHalfLength(G4double dz);
    inline void SetRadiusMinusZ(G4double R1);
    inline void SetRadiusPlusZ(G4double R2);
 
    // Solid standard methods
 
    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;
    EInside Inside(const G4ThreeVector& p) const override;
    G4ThreeVector SurfaceNormal( const G4ThreeVector& p) const override;
    G4double DistanceToIn(const G4ThreeVector& p,
                          const G4ThreeVector& v) const override;
    G4double DistanceToIn(const G4ThreeVector& p) const override;
    G4double DistanceToOut(const G4ThreeVector& p,
                           const G4ThreeVector& v,
                           const G4bool calcNorm = false,
                                 G4bool* validNorm = nullptr,
                                 G4ThreeVector* n = nullptr) const override;
    G4double DistanceToOut(const G4ThreeVector& p) const override;
 
    G4GeometryType GetEntityType() const override;
 
    G4VSolid* Clone() const override;
 
    std::ostream& StreamInfo(std::ostream& os) const override;
 
    G4ThreeVector GetPointOnSurface() const override;
 
    // Visualisation functions
 
    void DescribeYourselfTo(G4VGraphicsScene& scene) const override;
    G4Polyhedron* CreatePolyhedron() const override;
    G4Polyhedron* GetPolyhedron () const override;
 
    G4Paraboloid(__void__&);
      // Fake default constructor for usage restricted to direct object
      // persistency for clients requiring preallocation of memory for
      // persistifiable objects.
 
    G4Paraboloid(const G4Paraboloid& rhs);
    G4Paraboloid& operator=(const G4Paraboloid& rhs);
      // Copy constructor and assignment operator.
 
  protected:
 
    mutable G4bool fRebuildPolyhedron = false;
    mutable G4Polyhedron* fpPolyhedron = nullptr;
 
  private:
 
    // Making this mutable to allow GetPointOnSurface to have access to
    // area function.
    mutable G4double fSurfaceArea = 0.0;
    G4double fCubicVolume = 0.0;
 
    G4double dz, r1, r2;
    G4double k1, k2;
    // Defined to make some calculations easier to follow
};
 
#include "G4Paraboloid.icc"
 
#endif  // defined(G4GEOM_USE_UPARABOLOID) && defined(G4GEOM_USE_SYS_USOLIDS)
 
#endif // G4Paraboloid_HH