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//
// G4UCutTubs
//
// Class description:
//
// Wrapper class for G4CutTubs to make use of VecGeom CutTube.

// Author: G.Cosmo (CERN), 07.07.2017
// --------------------------------------------------------------------
#ifndef G4UCUTTUBS_HH
#define G4UCUTTUBS_HH

#include "G4UAdapter.hh"

#if ( defined(G4GEOM_USE_USOLIDS) || defined(G4GEOM_USE_PARTIAL_USOLIDS) )

#include <VecGeom/volumes/UnplacedCutTube.h>

#include "G4Polyhedron.hh"

/**
 * @brief G4UCutTubs is a wrapper class for G4CutTubs to make use of
 * VecGeom CutTube.
 */

class G4UCutTubs : public G4UAdapter<vecgeom::UnplacedCutTube>
{
  using Shape_t = vecgeom::UnplacedCutTube;
  using Base_t = G4UAdapter<vecgeom::UnplacedCutTube>;

  public:

    /**
     * Constructs a tube with the given name, dimensions and cuts.
     *  @param[in] pName The name of the solid.
     *  @param[in] pRmin Inner radius.
     *  @param[in] pRmax Outer radius.
     *  @param[in] pDZ Half length in Z.
     *  @param[in] pSPhi Starting angle of the segment in radians.
     *  @param[in] pDPhi Delta angle of the segment in radians.
     *  @param[in] pLowNorm Outside normal vector at -Z.
     *  @param[in] pHighNorm Outside normal vector at +Z.
     */
    G4UCutTubs( const G4String& pName,
                      G4double pRMin,
                      G4double pRMax,
                      G4double pDz,
                      G4double pSPhi,
                      G4double pDPhi,
                      const G4ThreeVector& pLowNorm,
                      const G4ThreeVector& pHighNorm );

    /**
     * Default destructor.
     */
    ~G4UCutTubs() override = default;

    /**
     * Makes a clone of the object for use in multi-treading.
     *  @returns A pointer to the new cloned allocated solid.
     */
    G4VSolid* Clone() const override;

    /**
     * Accessors.
     */
    G4double GetInnerRadius   () const;
    G4double GetOuterRadius   () const;
    G4double GetZHalfLength   () const;
    G4double GetStartPhiAngle () const;
    G4double GetDeltaPhiAngle () const;
    G4double GetSinStartPhi   () const;
    G4double GetCosStartPhi   () const;
    G4double GetSinEndPhi     () const;
    G4double GetCosEndPhi     () const;
    G4ThreeVector GetLowNorm  () const;
    G4ThreeVector GetHighNorm () const;  

    /**
     * Modifiers.
     */
    void SetInnerRadius   (G4double newRMin);
    void SetOuterRadius   (G4double newRMax);
    void SetZHalfLength   (G4double newDz);
    void SetStartPhiAngle (G4double newSPhi, G4bool trig=true);
    void SetDeltaPhiAngle (G4double newDPhi);
    
    /**
     * Returns the type ID, "G4CutTubs" of the solid.
     */
    inline G4GeometryType GetEntityType() const override;

    /**
     * Computes the bounding limits of the solid.
     *  @param[out] pMin The minimum bounding limit point.
     *  @param[out] pMax The maximum bounding limit point.
     */
    void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;

    /**
     * Calculates the minimum and maximum extent of the solid, when under the
     * specified transform, and within the specified limits.
     *  @param[in] pAxis The axis along which compute the extent.
     *  @param[in] pVoxelLimit The limiting space dictated by voxels.
     *  @param[in] pTransform The internal transformation applied to the solid.
     *  @param[out] pMin The minimum extent value.
     *  @param[out] pMax The maximum extent value.
     *  @returns True if the solid is intersected by the extent region.
     */
    G4bool CalculateExtent(const EAxis pAxis,
                           const G4VoxelLimits& pVoxelLimit,
                           const G4AffineTransform& pTransform,
                           G4double& pMin, G4double& pMax) const override;

    /**
     * Returns a generated polyhedron as graphical representations.
     */
    G4Polyhedron* CreatePolyhedron() const override;

    /**
     * Copy constructor and assignment operator.
     */
    G4UCutTubs(const G4UCutTubs& rhs);
    G4UCutTubs& operator=(const G4UCutTubs& rhs); 

  private:

    /**
     * Get Z value of the point on Cutted Plane.
     */
    G4double GetCutZ(const G4ThreeVector& p) const;
};

// --------------------------------------------------------------------
// Inline methods
// --------------------------------------------------------------------

inline G4GeometryType G4UCutTubs::GetEntityType() const
{
  return "G4CutTubs";
}

#endif  // G4GEOM_USE_USOLIDS

#endif