// @(#)root/geom:$Id$
// Author: Mihaela Gheata   20/06/04

/*************************************************************************
 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

#ifndef ROOT_TGeoParaboloid
#define ROOT_TGeoParaboloid

#include "TGeoBBox.h"

class TGeoParaboloid : public TGeoBBox {
private:
   Double_t fRlo; // radius at z=-dz
   Double_t fRhi; // radius at z=+dz
   Double_t fDz;  // range on Z axis [-dz, dz]
   Double_t fA;   // quadratic coeff.
   Double_t fB;   // Z value of parabola at x=y=0

   TGeoParaboloid(const TGeoParaboloid &) = delete;
   TGeoParaboloid &operator=(const TGeoParaboloid &) = delete;

public:
   // constructors
   TGeoParaboloid();
   TGeoParaboloid(Double_t rlo, Double_t rhi, Double_t dz);
   TGeoParaboloid(const char *name, Double_t rlo, Double_t rhi, Double_t dz);
   TGeoParaboloid(Double_t *params);
   // destructor
   ~TGeoParaboloid() override;
   // methods
   Double_t Capacity() const override;
   void ComputeBBox() override;
   void ComputeNormal(const Double_t *point, const Double_t *dir, Double_t *norm) override;
   void ComputeNormal_v(const Double_t *points, const Double_t *dirs, Double_t *norms, Int_t vecsize) override;
   Bool_t Contains(const Double_t *point) const override;
   void Contains_v(const Double_t *points, Bool_t *inside, Int_t vecsize) const override;
   Int_t DistancetoPrimitive(Int_t px, Int_t py) override;
   Double_t DistToParaboloid(const Double_t *point, const Double_t *dir, Bool_t in) const;
   Double_t DistFromInside(const Double_t *point, const Double_t *dir, Int_t iact = 1, Double_t step = TGeoShape::Big(),
                           Double_t *safe = nullptr) const override;
   void DistFromInside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize,
                         Double_t *step) const override;
   Double_t DistFromOutside(const Double_t *point, const Double_t *dir, Int_t iact = 1,
                            Double_t step = TGeoShape::Big(), Double_t *safe = nullptr) const override;
   void DistFromOutside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize,
                          Double_t *step) const override;
   TGeoVolume *
   Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step) override;
   const TBuffer3D &GetBuffer3D(Int_t reqSections, Bool_t localFrame) const override;
   Double_t GetRlo() const { return fRlo; }
   Double_t GetRhi() const { return fRhi; }
   Double_t GetDz() const { return fDz; }

   void GetBoundingCylinder(Double_t *param) const override;
   TGeoShape *GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix *mat) const override;
   void GetMeshNumbers(Int_t &nvert, Int_t &nsegs, Int_t &npols) const override;
   Int_t GetNmeshVertices() const override;
   Bool_t GetPointsOnSegments(Int_t /*npoints*/, Double_t * /*array*/) const override { return kFALSE; }
   void InspectShape() const override;
   Bool_t IsCylType() const override { return kTRUE; }
   TBuffer3D *MakeBuffer3D() const override;
   Double_t Safety(const Double_t *point, Bool_t in = kTRUE) const override;
   void Safety_v(const Double_t *points, const Bool_t *inside, Double_t *safe, Int_t vecsize) const override;
   void SavePrimitive(std::ostream &out, Option_t *option = "") override;
   void SetParaboloidDimensions(Double_t rlo, Double_t rhi, Double_t dz);
   void SetDimensions(Double_t *param) override;
   void SetPoints(Double_t *points) const override;
   void SetPoints(Float_t *points) const override;
   void SetSegsAndPols(TBuffer3D &buff) const override;
   void Sizeof3D() const override;

   ClassDefOverride(TGeoParaboloid, 1) // paraboloid class
};

#endif