library: libGeom
#include "TGeoTube.h"

TGeoTube


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

class TGeoTube : public TGeoBBox

Inheritance Chart:
TObject
<-
TNamed
<-
TGeoShape
<-
TGeoBBox
<-
TGeoTube
<-
TGeoEltu
TGeoHype
TGeoTubeSeg
<-
TGeoCtub

    public:
TGeoTube() TGeoTube(Double_t rmin, Double_t rmax, Double_t dz) TGeoTube(const char* name, Double_t rmin, Double_t rmax, Double_t dz) TGeoTube(Double_t* params) TGeoTube(const TGeoTube&) virtual ~TGeoTube() 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) 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) 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) static void DistToTube(Double_t rsq, Double_t nsq, Double_t rdotn, Double_t radius, 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 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 GetRmax() const virtual Double_t GetRmin() const Bool_t HasRmin() const virtual void InspectShape() const virtual TClass* IsA() const virtual Bool_t IsCylType() const virtual TBuffer3D* MakeBuffer3D() const TGeoTube& operator=(const TGeoTube&) virtual void Paint(Option_t* option) 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, Int_t skipz = 0) virtual void SetDimensions(Double_t* param) virtual void SetPoints(Double_t* buff) const virtual void SetPoints(Float_t* buff) const virtual void SetSegsAndPols(TBuffer3D* buff) const void SetTubeDimensions(Double_t rmin, Double_t rmax, Double_t dz) 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 fRmin inner radius Double_t fRmax outer radius Double_t fDz half length

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);

_____________________________________________________________________________
/* */

TGeoTube()
 Default constructor

TGeoTube(Double_t rmin, Double_t rmax, Double_t dz) :TGeoBBox(0, 0, 0)
 Default constructor specifying minimum and maximum radius

TGeoTube(const char *name, Double_t rmin, Double_t rmax, Double_t dz) :TGeoBBox(name, 0, 0, 0)
 Default constructor specifying minimum and maximum radius

TGeoTube(Double_t *param) :TGeoBBox(0, 0, 0)
 Default constructor specifying minimum and maximum radius
 param[0] = Rmin
 param[1] = Rmax
 param[2] = dz

~TGeoTube()
 destructor

void ComputeBBox()
 compute bounding box of the tube

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*/)
 Compute normal to closest surface from POINT.

Bool_t Contains(Double_t *point) const
 test if point is inside this 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)
 compute distance from inside point to surface of the tube (static)

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

Double_t DistFromOutsideS(Double_t *point, Double_t *dir, Double_t rmin, Double_t rmax, Double_t dz)
 static method to compute distance from outside point to a tube with given parameters

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 and safe distance
 fist localize point w.r.t tube

void DistToTube(Double_t rsq, Double_t nsq, Double_t rdotn, Double_t radius, Double_t &b, Double_t &delta)
 Static method computing the distance to a tube with given radius, starting from
 POINT along DIR director cosines. The distance is computed as :
    RSQ   = point[0]*point[0]+point[1]*point[1]
    NSQ   = dir[0]*dir[0]+dir[1]*dir[1]  ---> should NOT be 0 !!!
    RDOTN = point[0]*dir[0]+point[1]*dir[1]
 The distance can be computed as :
    D = -B +/- DELTA
 where DELTA.GT.0 and D.GT.0

TGeoVolume* Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)
--- Divide this tube 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 radial 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 Paint(Option_t *option)
 Paint this shape according to option

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, 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 SetTubeDimensions(Double_t rmin, Double_t rmax, Double_t dz)

void SetDimensions(Double_t *param)

void SetPoints(Double_t *buff) const
 create tube mesh points

void SetPoints(Float_t *buff) const
 create tube 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);



Inline Functions


              Int_t GetByteCount() const
           Double_t GetRmin() const
           Double_t GetRmax() const
           Double_t GetDz() const
             Bool_t HasRmin() const
             Bool_t IsCylType() const
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)
           TGeoTube TGeoTube(const TGeoTube&)
          TGeoTube& operator=(const TGeoTube&)


Author: Andrei Gheata 24/10/01
Last update: root/geom:$Name: $:$Id: TGeoTube.cxx,v 1.50 2004/12/07 14:24:57 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *


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