/usr/include/root/TGeoParaboloid.h is in libroot-geom-dev 5.34.30-0ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// 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
#ifndef ROOT_TGeoBBox
#include "TGeoBBox.h"
#endif
////////////////////////////////////////////////////////////////////////////
//
// TGeoParaboloid - Paraboloid class. A paraboloid is the solid bounded by
// the following surfaces:
// - 2 planes parallel with XY cutting the Z axis at Z=-dz and Z=+dz
// - the surface of revolution of a parabola described by:
// z = a*(x*x + y*y) + b
// The parameters a and b are automatically computed from:
// - rlo - the radius of the circle of intersection between the
// parabolic surface and the plane z = -dz
// - rhi - the radius of the circle of intersection between the
// parabolic surface and the plane z = +dz
// | -dz = a*rlo*rlo + b
// | dz = a*rhi*rhi + b where: rlo != rhi, both >= 0
//
////////////////////////////////////////////////////////////////////////////
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
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
virtual ~TGeoParaboloid();
// methods
virtual Double_t Capacity() const;
virtual void ComputeBBox();
virtual void ComputeNormal(const Double_t *point, const Double_t *dir, Double_t *norm);
virtual void ComputeNormal_v(const Double_t *points, const Double_t *dirs, Double_t *norms, Int_t vecsize);
virtual Bool_t Contains(const Double_t *point) const;
virtual void Contains_v(const Double_t *points, Bool_t *inside, Int_t vecsize) const;
virtual Int_t DistancetoPrimitive(Int_t px, Int_t py);
Double_t DistToParaboloid(const Double_t *point, const Double_t *dir, Bool_t in) const;
virtual Double_t DistFromInside(const Double_t *point, const Double_t *dir, Int_t iact=1,
Double_t step=TGeoShape::Big(), Double_t *safe=0) const;
virtual void DistFromInside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const;
virtual Double_t DistFromOutside(const Double_t *point, const Double_t *dir, Int_t iact=1,
Double_t step=TGeoShape::Big(), Double_t *safe=0) const;
virtual void DistFromOutside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const;
virtual TGeoVolume *Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv,
Double_t start, Double_t step);
virtual const TBuffer3D &GetBuffer3D(Int_t reqSections, Bool_t localFrame) const;
Double_t GetRlo() const {return fRlo;}
Double_t GetRhi() const {return fRhi;}
Double_t GetDz() const {return fDz;}
virtual void GetBoundingCylinder(Double_t *param) const;
virtual TGeoShape *GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix *mat) const;
virtual void GetMeshNumbers(Int_t &nvert, Int_t &nsegs, Int_t &npols) const;
virtual Int_t GetNmeshVertices() const;
virtual Bool_t GetPointsOnSegments(Int_t /*npoints*/, Double_t * /*array*/) const {return kFALSE;}
virtual void InspectShape() const;
virtual Bool_t IsCylType() const {return kTRUE;}
virtual TBuffer3D *MakeBuffer3D() const;
virtual Double_t Safety(const Double_t *point, Bool_t in=kTRUE) const;
virtual void Safety_v(const Double_t *points, const Bool_t *inside, Double_t *safe, Int_t vecsize) const;
virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
void SetParaboloidDimensions(Double_t rlo, Double_t rhi, Double_t dz);
virtual void SetDimensions(Double_t *param);
virtual void SetPoints(Double_t *points) const;
virtual void SetPoints(Float_t *points) const;
virtual void SetSegsAndPols(TBuffer3D &buff) const;
virtual void Sizeof3D() const;
ClassDef(TGeoParaboloid, 1) // paraboloid class
};
#endif
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