library: libGeom #include "TGeoTube.h"

# TGeoTubeSeg

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

## class TGeoTubeSeg : public TGeoTube

| Inheritance Chart:
`TObject`
| <- | `TNamed`
| <- | `TGeoShape`
| <- | `TGeoBBox`
| <- | `TGeoTube`
| <- | `TGeoTubeSeg` |
<- |
`TGeoCtub` |

        public:

                                   TGeoTubeSeg()
                                   TGeoTubeSeg(Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2)
                                   TGeoTubeSeg(const char* name, Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2)
                                   TGeoTubeSeg(Double_t* params)
                                   TGeoTubeSeg(const TGeoTubeSeg&)
                           virtual ~TGeoTubeSeg()
                    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 rmin, Double_t rmax, Double_t dz, Double_t c1, Double_t s1, Double_t c2, Double_t s2)
                    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 rmin, Double_t rmax, Double_t dz, Double_t c1, Double_t s1, Double_t c2, Double_t s2, Double_t cm, Double_t sm, Double_t cdfi)
                  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 rmin, Double_t rmax, Double_t dz, Double_t c1, Double_t s1, Double_t c2, Double_t s2, Double_t cm, Double_t sm, Double_t cdfi)
               virtual TGeoVolume* Divide(TGeoVolume* voldiv, const char* divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)
                  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 TGeoShape* GetMakeRuntimeShape(TGeoShape* mother, TGeoMatrix* mat) const
                     virtual Int_t GetNmeshVertices() const
                          Double_t GetPhi1() const
                          Double_t GetPhi2() const
                      virtual void InspectShape() const
                   virtual TClass* IsA() const
                virtual TBuffer3D* MakeBuffer3D() const
                      TGeoTubeSeg& operator=(const TGeoTubeSeg&)
                  virtual Double_t Safety(Double_t* point, Bool_t in = kTRUE) const
                   static Double_t SafetyS(Double_t* point, Bool_t in, Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2, Int_t skipz = 0)
                      virtual void SavePrimitive(ofstream& out, Option_t* option)
                      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
                              void SetTubsDimensions(Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2)
                      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 fPhi1  first phi limit
          Double_t fPhi2  second phi limit

## Class Description

     TGeoTube - cylindrical tube class. It takes 3 parameters :
                inner radius, outer radius and half-length dz.

    _____________________________________________________________________________

/* */

/* */

/* */

/* */

/* */

/* */

/* */

    _____________________________________________________________________________
     TGeoTubeSeg - a phi segment of a tube. Has 5 parameters :
                - the same 3 as a tube;
                - first phi limit (in degrees)
                - second phi limit

    _____________________________________________________________________________

/* */

/* */

/* */

/* */

    _____________________________________________________________________________
     TGeoCtub - a tube segment cut with 2 planes. Has 11 parameters :
                - the same 5 as a tube segment;
                - x, y, z components of the normal to the -dZ cut plane in
                  point (0, 0, -dZ);
                - x, y, z components of the normal to the +dZ cut plane in
                  point (0, 0, dZ);

    _____________________________________________________________________________

/* */

TGeoTubeSeg()

     Default constructor

TGeoTubeSeg(Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2) :TGeoTube(rmin, rmax, dz)

     Default constructor specifying minimum and maximum radius

TGeoTubeSeg(const char *name, Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2) :TGeoTube(name, rmin, rmax, dz)

     Default constructor specifying minimum and maximum radius

TGeoTubeSeg(Double_t *param) :TGeoTube(0, 0, 0)

     Default constructor specifying minimum and maximum radius
     param[0] = Rmin
     param[1] = Rmax
     param[2] = dz
     param[3] = phi1
     param[4] = phi2

~TGeoTubeSeg()

     destructor

void ComputeBBox()

     compute bounding box of the tube segment

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 rmin, Double_t rmax, Double_t /*dz*/, Double_t c1, Double_t s1, Double_t c2, Double_t s2)

     Compute normal to closest surface from POINT.

Bool_t Contains(Double_t *point) const

     test if point is inside this tube segment
     first check if point is inside the tube

Int_t DistancetoPrimitive(Int_t px, Int_t py)

     compute closest distance from point px,py to each corner

Double_t DistFromInsideS(Double_t *point, Double_t *dir, Double_t rmin, Double_t rmax, Double_t dz, Double_t c1, Double_t s1, Double_t c2, Double_t s2, Double_t cm, Double_t sm, Double_t cdfi)

     Compute distance from inside point to surface of the tube segment (static)
     Boundary safe algorithm.
     Do Z

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 tube segment
     Boundary safe algorithm.

Double_t DistFromOutsideS(Double_t *point, Double_t *dir, Double_t rmin, Double_t rmax, Double_t dz, Double_t c1, Double_t s1, Double_t c2, Double_t s2, Double_t cm, Double_t sm, Double_t cdfi)

     Static method to compute distance to arbitrary tube segment from outside point
     Boundary safe algorithm.

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 segment
     fist localize point w.r.t tube

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

    --- Divide this tube segment 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 radialdivision
     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.

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

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 &buff) 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 rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2, Int_t skipz)

     Static method to compute the closest distance from given point to this shape.

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

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

void SetTubsDimensions(Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2)

void SetDimensions(Double_t *param)

void SetPoints(Double_t *points) const

     create sphere mesh points

void SetPoints(Float_t *points) const

     create sphere 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()+1;
    /    Int_t numPoints = n*4;
    /    Int_t numSegs   = n*8;
    /    Int_t numPolys  = n*4-2;

    /    painter->AddSize3D(numPoints, numSegs, numPolys);

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

### Inline Functions

                   Int_t GetByteCount() const
                Double_t GetPhi1() const
                Double_t GetPhi2() const
                 TClass* Class()
                 TClass* IsA() const
                    void ShowMembers(TMemberInspector& insp, char* parent)
                    void Streamer(TBuffer& b)
                    void StreamerNVirtual(TBuffer& b)
             TGeoTubeSeg TGeoTubeSeg(const TGeoTubeSeg&)
            TGeoTubeSeg& operator=(const TGeoTubeSeg&)

Author: Andrei Gheata 24/10/01
Last update: root/geom:$Name: $:$Id: TGeoTube.cxx,v 1.63 2005/05/25 14:25:16 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *