TGeoTube


class description - source file - inheritance tree

class TGeoTube : public TGeoBBox


    public:
TGeoTube TGeoTube() TGeoTube TGeoTube(Double_t rmin, Double_t rmax, Double_t dz) TGeoTube TGeoTube(const char* name, Double_t rmin, Double_t rmax, Double_t dz) TGeoTube TGeoTube(Double_t* params) TGeoTube TGeoTube(const TGeoTube&) virtual void ~TGeoTube() static TClass* Class() virtual void ComputeBBox() virtual Bool_t Contains(Double_t* point) const virtual Int_t DistancetoPrimitive(Int_t px, Int_t py) virtual Double_t DistToIn(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = 0, Double_t* safe = 0) const static Double_t DistToInS(Double_t* point, Double_t* dir, Double_t rmin, Double_t rmax, Double_t dz) virtual Double_t DistToOut(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = 0, Double_t* safe = 0) const static Double_t DistToOutS(Double_t* point, Double_t* dir, Double_t rmin, Double_t rmax, Double_t dz) virtual Double_t DistToSurf(Double_t* point, Double_t* dir) const 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) const virtual Double_t GetRmax() const virtual Double_t GetRmin() const virtual void InspectShape() const virtual TClass* IsA() const virtual Bool_t IsCylType() const virtual void* Make3DBuffer(const TGeoVolume* vol) const virtual void NextCrossing(TGeoParamCurve* c, Double_t* point) const virtual void Paint(Option_t* option) virtual void PaintNext(TGeoHMatrix* glmat, 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 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


See also

TGeoEltu, TGeoTubeSeg

Class Description


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

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 DistToOutS(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 DistToOut(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 DistToInS(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 DistToIn(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

Double_t DistToSurf(Double_t * /*point*/, Double_t * /*dir*/) const
 computes the distance to next surface of the sphere along a ray
 starting from given point to the given direction.

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) 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

void* Make3DBuffer(const TGeoVolume *vol) const

void Paint(Option_t *option)
 paint this shape according to option

void PaintNext(TGeoHMatrix *glmat, Option_t *option)
 paint this shape according to option

void NextCrossing(TGeoParamCurve * /*c*/, Double_t * /*point*/) const
 computes next intersection point of curve c with this shape

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

void Sizeof3D() const
 fill size of this 3-D object



Inline Functions


              Int_t GetByteCount() const
           Double_t GetRmin() const
           Double_t GetRmax() const
           Double_t GetDz() 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&)


Author: Andrei Gheata 24/10/01
Last update: root/geom:$Name: $:$Id: TGeoTube.cxx,v 1.19 2003/02/12 14:49:37 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *


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