library: libGeom #include "TGeoCone.h"

# TGeoCone

class description - source file - inheritance tree (.pdf)

## class TGeoCone : public TGeoBBox

| Inheritance Chart:
`TObject`
| <- | `TNamed`
| <- | `TGeoShape`
| <- | `TGeoBBox`
| <- | `TGeoCone` |
<- |
`TGeoConeSeg` |

        public:

                                   TGeoCone()
                                   TGeoCone(Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)
                                   TGeoCone(const char* name, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)
                                   TGeoCone(Double_t* params)
                                   TGeoCone(const TGeoCone&)
                           virtual ~TGeoCone()
                    static TClass* Class()
                      virtual void ComputeBBox()
                      virtual void ComputeNormal(Double_t* point, Double_t* dir, Double_t* norm)
                       static void ComputeNormalS(Double_t* point, Double_t* dir, Double_t* norm, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)
                    virtual Bool_t Contains(Double_t* point) const
                     virtual Int_t DistancetoPrimitive(Int_t px, Int_t py)
                  virtual Double_t DistFromInside(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = TGeoShape::Big(), Double_t* safe = 0) const
                   static Double_t DistFromInsideS(Double_t* point, Double_t* dir, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)
                  virtual Double_t DistFromOutside(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = TGeoShape::Big(), Double_t* safe = 0) const
                   static Double_t DistFromOutsideS(Double_t* point, Double_t* dir, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)
                       static void DistToCone(Double_t* point, Double_t* dir, Double_t dz, Double_t r1, Double_t r2, Double_t& b, Double_t& delta)
               virtual TGeoVolume* Divide(TGeoVolume* voldiv, const char* divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)
               virtual const char* GetAxisName(Int_t iaxis) const
                  virtual Double_t GetAxisRange(Int_t iaxis, Double_t& xlo, Double_t& xhi) const
                      virtual void GetBoundingCylinder(Double_t* param) const
          virtual const TBuffer3D& GetBuffer3D(Int_t reqSections, Bool_t localFrame) const
                     virtual Int_t GetByteCount() const
                  virtual Double_t GetDz() const
                virtual TGeoShape* GetMakeRuntimeShape(TGeoShape* mother, TGeoMatrix* mat) const
                     virtual Int_t GetNmeshVertices() const
                  virtual Double_t GetRmax1() const
                  virtual Double_t GetRmax2() const
                  virtual Double_t GetRmin1() const
                  virtual Double_t GetRmin2() const
                      virtual void InspectShape() const
                   virtual TClass* IsA() const
                    virtual Bool_t IsCylType() const
                virtual TBuffer3D* MakeBuffer3D() const
                         TGeoCone& operator=(const TGeoCone&)
                  virtual Double_t Safety(Double_t* point, Bool_t in = kTRUE) const
                   static Double_t SafetyS(Double_t* point, Bool_t in, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2, Int_t skipz = 0)
                      virtual void SavePrimitive(ofstream& out, Option_t* option)
                              void SetConeDimensions(Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)
                      virtual void SetDimensions(Double_t* param)
                      virtual void SetPoints(Double_t* points) const
                      virtual void SetPoints(Float_t* points) const
                      virtual void SetSegsAndPols(TBuffer3D& buffer) const
                      virtual void ShowMembers(TMemberInspector& insp, char* parent)
                      virtual void Sizeof3D() const
                      virtual void Streamer(TBuffer& b)
                              void StreamerNVirtual(TBuffer& b)

### Data Members

        protected:

          Double_t fDz     half length
          Double_t fRmin1  inner radius at -dz
          Double_t fRmax1  outer radius at -dz
          Double_t fRmin2  inner radius at +dz
          Double_t fRmax2  outer radius at +dz

## Class Description

TGeoCone()

     Default constructor

TGeoCone(Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2) :TGeoBBox(0, 0, 0)

     Default constructor specifying minimum and maximum radius

TGeoCone(const char *name, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2) :TGeoBBox(name, 0, 0, 0)

     Default constructor specifying minimum and maximum radius

TGeoCone(Double_t *param) :TGeoBBox(0, 0, 0)

     Default constructor specifying minimum and maximum radius
     param[0] = dz
     param[1] = Rmin1
     param[2] = Rmax1
     param[3] = Rmin2
     param[4] = Rmax2

~TGeoCone()

     destructor

void ComputeBBox()

     compute bounding box of the sphere

void ComputeNormal(Double_t *point, Double_t *dir, Double_t *norm)

     Compute normal to closest surface from POINT.

void ComputeNormalS(Double_t *point, Double_t *dir, Double_t *norm, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)

     Compute normal to closest surface from POINT.

Bool_t Contains(Double_t *point) const

     test if point is inside this cone

Double_t DistFromInsideS(Double_t *point, Double_t *dir, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)

     Compute distance from inside point to surface of the cone (static)
     Boundary safe algorithm.

Double_t DistFromInside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const

     Compute distance from inside point to surface of the cone
     Boundary safe algorithm.

Double_t DistFromOutsideS(Double_t *point, Double_t *dir, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)

     Compute distance from outside point to surface of the tube
     Boundary safe algorithm.
     compute distance to Z planes

Double_t DistFromOutside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const

     compute distance from outside point to surface of the tube
     compute safe radius

void DistToCone(Double_t *point, Double_t *dir, Double_t dz, Double_t r1, Double_t r2, Double_t &b, Double_t &delta)

     Static method to compute distance to a conical surface with :
     - r1, z1 - radius and Z position of lower base
     - r2, z2 - radius and Z position of upper base

Int_t DistancetoPrimitive(Int_t px, Int_t py)

     compute closest distance from point px,py to each corner

TGeoVolume* Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)

    --- Divide this cone shape belonging to volume "voldiv" into ndiv volumes
     called divname, from start position with the given step. Returns pointer
     to created division cell volume in case of Z divisions. For Z division
     creates all volumes with different shapes and returns pointer to volume that
     was divided. In case a wrong division axis is supplied, returns pointer to
     volume that was divided.

const char* GetAxisName(Int_t iaxis) const

     Returns name of axis IAXIS.

Double_t GetAxisRange(Int_t iaxis, Double_t &xlo, Double_t &xhi) const

     Get range of shape for a given axis.

void GetBoundingCylinder(Double_t *param) const

    --- Fill vector param[4] with the bounding cylinder parameters. The order
     is the following : Rmin, Rmax, Phi1, Phi2, dZ

TGeoShape* GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix * /*mat*/) const

     in case shape has some negative parameters, these has to be computed
     in order to fit the mother

void InspectShape() const

     print shape parameters

TBuffer3D* MakeBuffer3D() const

     Creates a TBuffer3D describing *this* shape.
     Coordinates are in local reference frame.

void SetSegsAndPols(TBuffer3D &buffer) const

     Fill TBuffer3D structure for segments and polygons.

Double_t Safety(Double_t *point, Bool_t in) const

     computes the closest distance from given point to this shape, according
     to option. The matching point on the shape is stored in spoint.

Double_t SafetyS(Double_t *point, Bool_t in, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2, Int_t skipz)

     computes the closest distance from given point to this shape, according
     to option. The matching point on the shape is stored in spoint.

void SavePrimitive(ofstream &out, Option_t * /*option*/)

     Save a primitive as a C++ statement(s) on output stream "out".

void SetConeDimensions(Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)

void SetDimensions(Double_t *param)

void SetPoints(Double_t *points) const

     create cone mesh points

void SetPoints(Float_t *points) const

     create cone mesh points

Int_t GetNmeshVertices() const

     Return number of vertices of the mesh representation

void Sizeof3D() const

    /// fill size of this 3-D object
    /    TVirtualGeoPainter *painter = gGeoManager->GetGeomPainter();
    /    if (!painter) return;
    /    Int_t n = gGeoManager->GetNsegments();
    /    Int_t numPoints = n*4;
    /    Int_t numSegs   = n*8;
    /    Int_t numPolys  = n*4;
    /    painter->AddSize3D(numPoints, numSegs, numPolys);

const TBuffer3D& GetBuffer3D(Int_t reqSections, Bool_t localFrame) const

### Inline Functions

                  Int_t GetByteCount() const
               Double_t GetDz() const
               Double_t GetRmin1() const
               Double_t GetRmax1() const
               Double_t GetRmin2() const
               Double_t GetRmax2() const
                 Bool_t IsCylType() const
                TClass* Class()
                TClass* IsA() const
                   void ShowMembers(TMemberInspector& insp, char* parent)
                   void Streamer(TBuffer& b)
                   void StreamerNVirtual(TBuffer& b)
               TGeoCone TGeoCone(const TGeoCone&)
              TGeoCone& operator=(const TGeoCone&)

Author: Andrei Gheata 31/01/02
Last update: root/geom:$Name: $:$Id: TGeoCone.cxx,v 1.51 2005/05/13 16:20:38 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *