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TGeoPgon Class Reference

Polygons are defined in the same way as polycones, the difference being just that the segments between consecutive Z planes are regular polygons.

The phi segmentation is preserved and the shape is defined in a similar manner, just that rmin and rmax represent the radii of the circles inscribed in the inner/outer polygon.

The constructor of a polygon has the form:

TGeoPgon(Double_t phi1,Double_t dphi,Int_t nedges,Int_t nz);
TGeoPgon()
dummy ctor
Definition TGeoPgon.cxx:129

The extra parameter nedges represent the number of equal edges of the polygons, between phi1 and phi1+dphi.

Definition at line 20 of file TGeoPgon.h.

## Public Member Functions

TGeoPgon ()
dummy ctor

TGeoPgon (const char *name, Double_t phi, Double_t dphi, Int_t nedges, Int_t nz)
Default constructor.

TGeoPgon (Double_t *params)
Default constructor in GEANT3 style.

TGeoPgon (Double_t phi, Double_t dphi, Int_t nedges, Int_t nz)
Default constructor.

~TGeoPgon () override
destructor

Double_t Capacity () const override
Computes capacity of the shape in [length^3].

void ComputeBBox () override
compute bounding box for a polygone Check if the sections are in increasing Z order

void ComputeNormal (const Double_t *point, const Double_t *dir, Double_t *norm) override
Compute normal to closest surface from POINT.

void ComputeNormal_v (const Double_t *points, const Double_t *dirs, Double_t *norms, Int_t vecsize) override
Compute the normal for an array o points so that norm.dot.dir is positive Input: Arrays of point coordinates and directions + vector size Output: Array of normal directions.

Bool_t Contains (const Double_t *point) const override
test if point is inside this shape check total z range

void Contains_v (const Double_t *points, Bool_t *inside, Int_t vecsize) const override
Check the inside status for each of the points in the array.

Int_t DistancetoPrimitive (Int_t px, Int_t py) override
compute closest distance from point px,py to each corner

Double_t DistFromInside (const Double_t *point, const Double_t *dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=nullptr) const override
compute distance from inside point to surface of the polygone first find out in which Z section the point is in

void DistFromInside_v (const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const override
Compute distance from array of input points having directions specified by dirs. Store output in dists.

Double_t DistFromOutside (const Double_t *point, const Double_t *dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=nullptr) const override
Compute distance from outside point to surface of the polygone.

void DistFromOutside_v (const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const override
Compute distance from array of input points having directions specified by dirs. Store output in dists.

TGeoVolumeDivide (TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step) override
Divide this polygone shape belonging to volume "voldiv" into ndiv volumes called divname, from start position with the given step.

void GetBoundingCylinder (Double_t *param) const override
Fill vector param[4] with the bounding cylinder parameters.

const TBuffer3DGetBuffer3D (Int_t reqSections, Bool_t localFrame) const override
Fills a static 3D buffer and returns a reference.

Int_t GetByteCount () const override

TGeoShapeGetMakeRuntimeShape (TGeoShape *, TGeoMatrix *) const override
In case shape has some negative parameters, these has to be computed in order to fit the mother.

void GetMeshNumbers (Int_t &nvert, Int_t &nsegs, Int_t &npols) const override
Returns numbers of vertices, segments and polygons composing the shape mesh.

Int_t GetNedges () const

Int_t GetNmeshVertices () const override
Return number of vertices of the mesh representation.

Int_t GetNsegments () const override
Returns number of segments on each mesh circle segment.

Bool_t GetPointsOnSegments (Int_t npoints, Double_t *array) const override
Fills array with n random points located on the line segments of the shape mesh.

void InspectShape () const override
Inspect the PGON parameters.

TClassIsA () const override

TBuffer3DMakeBuffer3D () const override
Creates a TBuffer3D describing this shape.

Double_t Safety (const Double_t *point, Bool_t in=kTRUE) const override
computes the closest distance from given point to this shape, according to option.

void Safety_v (const Double_t *points, const Bool_t *inside, Double_t *safe, Int_t vecsize) const override
Compute safe distance from each of the points in the input array.

Double_t SafetyToSegment (const Double_t *point, Int_t ipl, Int_t iphi, Bool_t in, Double_t safphi, Double_t safmin=TGeoShape::Big()) const
Compute safety from POINT to segment between planes ipl, ipl+1 within safmin.

void SavePrimitive (std::ostream &out, Option_t *option="") override
Save a primitive as a C++ statement(s) on output stream "out".

void SetDimensions (Double_t *param) override
Set PGON dimensions starting from an array.

void SetNedges (Int_t ne)

void SetPoints (Double_t *points) const override
create polygone mesh points

void SetPoints (Float_t *points) const override
create polygone mesh points

void SetSegsAndPols (TBuffer3D &buff) const override
Fill TBuffer3D structure for segments and polygons.

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

void Streamer (TBuffer &) override
Stream an object of class TGeoPcon.

void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TGeoPcon
TGeoPcon ()
dummy ctor

TGeoPcon (const char *name)

TGeoPcon (const char *name, Double_t phi, Double_t dphi, Int_t nz)
Default constructor.

TGeoPcon (Double_t *params)
Default constructor in GEANT3 style.

TGeoPcon (Double_t phi, Double_t dphi, Int_t nz)
Default constructor.

~TGeoPcon () override
destructor

virtual void DefineSection (Int_t snum, Double_t z, Double_t rmin, Double_t rmax)
Defines z position of a section plane, rmin and rmax at this z.

Double_t DistToSegZ (const Double_t *point, const Double_t *dir, Int_t &iz) const
compute distance to a pcon Z slice. Segment iz must be valid

Double_tDphi ()

const char * GetAxisName (Int_t iaxis) const override
Returns name of axis IAXIS.

Double_t GetAxisRange (Int_t iaxis, Double_t &xlo, Double_t &xhi) const override
Get range of shape for a given axis.

Double_t GetDphi () const

Int_t GetNz () const

Double_t GetPhi1 () const

Double_tGetRmax () const

Double_t GetRmax (Int_t ipl) const
Returns Rmax for Z segment IPL.

Double_tGetRmin () const

Double_t GetRmin (Int_t ipl) const
Returns Rmin for Z segment IPL.

Double_tGetZ () const

Double_t GetZ (Int_t ipl) const
Returns Z for segment IPL.

Bool_t IsCylType () const override

Double_tPhi1 ()

Double_tRmax (Int_t ipl)

Double_tRmin (Int_t ipl)

Double_t SafetyToSegment (const Double_t *point, Int_t ipl, Bool_t in=kTRUE, Double_t safmin=TGeoShape::Big()) const
Compute safety from POINT to segment between planes ipl, ipl+1 within safmin.

void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Double_tZ (Int_t ipl)

Public Member Functions inherited from TGeoBBox
TGeoBBox ()
Default constructor.

TGeoBBox (const char *name, Double_t dx, Double_t dy, Double_t dz, Double_t *origin=nullptr)
Constructor with shape name.

TGeoBBox (Double_t *param)
Constructor based on the array of parameters.

TGeoBBox (Double_t dx, Double_t dy, Double_t dz, Double_t *origin=nullptr)
Constructor where half-lengths are provided.

~TGeoBBox () override
Destructor.

Bool_t CouldBeCrossed (const Double_t *point, const Double_t *dir) const override
Decides fast if the bounding box could be crossed by a vector.

virtual Double_t GetDX () const

virtual Double_t GetDY () const

virtual Double_t GetDZ () const

virtual Double_t GetFacetArea (Int_t index=0) const
Get area in internal units of the facet with a given index.

Int_t GetFittingBox (const TGeoBBox *parambox, TGeoMatrix *mat, Double_t &dx, Double_t &dy, Double_t &dz) const override
Fills real parameters of a positioned box inside this one. Returns 0 if successful.

virtual const Double_tGetOrigin () const

virtual Bool_t GetPointsOnFacet (Int_t index, Int_t npoints, Double_t *array) const
Fills array with n random points located on the surface of indexed facet.

virtual Bool_t IsNullBox () const

Bool_t IsValidBox () const override

void SetBoxDimensions (Double_t dx, Double_t dy, Double_t dz, Double_t *origin=nullptr)
Set parameters of the box.

void SetBoxPoints (Double_t *points) const
Fill box vertices to an array.

void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TGeoShape
TGeoShape ()
Default constructor.

TGeoShape (const char *name)
Default constructor.

~TGeoShape () override
Destructor.

virtual void AfterStreamer ()

void CheckShape (Int_t testNo, Int_t nsamples=10000, Option_t *option="")

void Draw (Option_t *option="") override
Draw this shape.

void ExecuteEvent (Int_t event, Int_t px, Int_t py) override
Execute mouse actions on this shape.

Int_t GetId () const

const char * GetName () const override
Get the shape name.

const char * GetPointerName () const
Provide a pointer name containing uid.

void InvertShapeBit (UInt_t f)

TClassIsA () const override

virtual Bool_t IsAssembly () const

virtual Bool_t IsComposite () const

virtual Bool_t IsReflected () const

Bool_t IsRunTimeShape () const

Bool_t IsValid () const

virtual Bool_t IsVecGeom () const

void Paint (Option_t *option="") override
Paint this shape.

void ResetShapeBit (UInt_t f)

void SetId (Int_t id)

void SetRuntime (Bool_t flag=kTRUE)

void SetShapeBit (UInt_t f)

void SetShapeBit (UInt_t f, Bool_t set)
Equivalent of TObject::SetBit.

Int_t ShapeDistancetoPrimitive (Int_t numpoints, Int_t px, Int_t py) const
Returns distance to shape primitive mesh.

void Streamer (TBuffer &) override
Stream an object of class TObject.

void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Bool_t TestShapeBit (UInt_t f) const

Int_t TestShapeBits (UInt_t f) const

Public Member Functions inherited from TNamed
TNamed ()

TNamed (const char *name, const char *title)

TNamed (const TNamed &named)
TNamed copy ctor.

TNamed (const TString &name, const TString &title)

virtual ~TNamed ()
TNamed destructor.

void Clear (Option_t *option="") override
Set name and title to empty strings ("").

TObjectClone (const char *newname="") const override
Make a clone of an object using the Streamer facility.

Int_t Compare (const TObject *obj) const override
Compare two TNamed objects.

void Copy (TObject &named) const override
Copy this to obj.

virtual void FillBuffer (char *&buffer)
Encode TNamed into output buffer.

const char * GetName () const override
Returns name of object.

const char * GetTitle () const override
Returns title of object.

ULong_t Hash () const override
Return hash value for this object.

TClassIsA () const override

Bool_t IsSortable () const override

void ls (Option_t *option="") const override
List TNamed name and title.

TNamedoperator= (const TNamed &rhs)
TNamed assignment operator.

void Print (Option_t *option="") const override
Print TNamed name and title.

virtual void SetName (const char *name)
Set the name of the TNamed.

virtual void SetNameTitle (const char *name, const char *title)
Set all the TNamed parameters (name and title).

virtual void SetTitle (const char *title="")
Set the title of the TNamed.

virtual Int_t Sizeof () const
Return size of the TNamed part of the TObject.

void Streamer (TBuffer &) override
Stream an object of class TObject.

void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TObject
TObject ()
TObject constructor.

TObject (const TObject &object)
TObject copy ctor.

virtual ~TObject ()
TObject destructor.

void AbstractMethod (const char *method) const
Use this method to implement an "abstract" method that you don't want to leave purely abstract.

Append graphics object to current pad.

virtual void Browse (TBrowser *b)
Browse object. May be overridden for another default action.

ULong_t CheckedHash ()
Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char * ClassName () const
Returns name of class to which the object belongs.

virtual void Delete (Option_t *option="")
Delete this object.

virtual void DrawClass () const
Draw class inheritance tree of the class to which this object belongs.

virtual TObjectDrawClone (Option_t *option="") const
Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).

virtual void Dump () const
Dump contents of object on stdout.

virtual void Error (const char *method, const char *msgfmt,...) const
Issue error message.

virtual void Execute (const char *method, const char *params, Int_t *error=nullptr)
Execute method on this object with the given parameter string, e.g.

virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=nullptr)
Execute method on this object with parameters stored in the TObjArray.

virtual void Fatal (const char *method, const char *msgfmt,...) const
Issue fatal error message.

virtual TObjectFindObject (const char *name) const
Must be redefined in derived classes.

virtual TObjectFindObject (const TObject *obj) const
Must be redefined in derived classes.

virtual Option_tGetDrawOption () const
Get option used by the graphics system to draw this object.

virtual const char * GetIconName () const
Returns mime type name of object.

virtual char * GetObjectInfo (Int_t px, Int_t py) const
Returns string containing info about the object at position (px,py).

virtual Option_tGetOption () const

virtual UInt_t GetUniqueID () const
Return the unique object id.

virtual Bool_t HandleTimer (TTimer *timer)
Execute action in response of a timer timing out.

Bool_t HasInconsistentHash () const
Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void Info (const char *method, const char *msgfmt,...) const
Issue info message.

virtual Bool_t InheritsFrom (const char *classname) const
Returns kTRUE if object inherits from class "classname".

virtual Bool_t InheritsFrom (const TClass *cl) const
Returns kTRUE if object inherits from TClass cl.

virtual void Inspect () const
Dump contents of this object in a graphics canvas.

void InvertBit (UInt_t f)

Bool_t IsDestructed () const
IsDestructed.

virtual Bool_t IsEqual (const TObject *obj) const
Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t IsFolder () const
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t IsOnHeap () const

R__ALWAYS_INLINE Bool_t IsZombie () const

void MayNotUse (const char *method) const
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t Notify ()
This method must be overridden to handle object notification (the base implementation is no-op).

void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
Use this method to declare a method obsolete.

void operator delete (void *ptr)
Operator delete.

void operator delete (void *ptr, void *vp)
Only called by placement new when throwing an exception.

void operator delete[] (void *ptr)
Operator delete [].

void operator delete[] (void *ptr, void *vp)
Only called by placement new[] when throwing an exception.

void * operator new (size_t sz)

void * operator new (size_t sz, void *vp)

void * operator new[] (size_t sz)

void * operator new[] (size_t sz, void *vp)

TObjectoperator= (const TObject &rhs)
TObject assignment operator.

virtual void Pop ()
Pop on object drawn in a pad to the top of the display list.

virtual Int_t Read (const char *name)
Read contents of object with specified name from the current directory.

virtual void RecursiveRemove (TObject *obj)
Recursively remove this object from a list.

void ResetBit (UInt_t f)

virtual void SaveAs (const char *filename="", Option_t *option="") const
Save this object in the file specified by filename.

void SetBit (UInt_t f)

void SetBit (UInt_t f, Bool_t set)
Set or unset the user status bits as specified in f.

virtual void SetDrawOption (Option_t *option="")
Set drawing option for object.

virtual void SetUniqueID (UInt_t uid)
Set the unique object id.

void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void SysError (const char *method, const char *msgfmt,...) const
Issue system error message.

R__ALWAYS_INLINE Bool_t TestBit (UInt_t f) const

Int_t TestBits (UInt_t f) const

virtual void UseCurrentStyle ()
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void Warning (const char *method, const char *msgfmt,...) const
Issue warning message.

virtual Int_t Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
Write this object to the current directory.

virtual Int_t Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
Write this object to the current directory.

## Static Public Member Functions

static TClassClass ()

static const char * Class_Name ()

static constexpr Version_t Class_Version ()

static const char * DeclFileName ()

Static Public Member Functions inherited from TGeoPcon
static TClassClass ()

static const char * Class_Name ()

static constexpr Version_t Class_Version ()

static const char * DeclFileName ()

Static Public Member Functions inherited from TGeoBBox
static Bool_t AreOverlapping (const TGeoBBox *box1, const TGeoMatrix *mat1, const TGeoBBox *box2, const TGeoMatrix *mat2)
Check if 2 positioned boxes overlap.

static TClassClass ()

static const char * Class_Name ()

static constexpr Version_t Class_Version ()

static Bool_t Contains (const Double_t *point, Double_t dx, Double_t dy, Double_t dz, const Double_t *origin)
Static method to check if point[3] is located inside a box of having dx, dy, dz as half-lengths.

static const char * DeclFileName ()

static Double_t DistFromInside (const Double_t *point, const Double_t *dir, Double_t dx, Double_t dy, Double_t dz, const Double_t *origin, Double_t stepmax=TGeoShape::Big())
Compute distance from inside point to surface of the box.

static Double_t DistFromOutside (const Double_t *point, const Double_t *dir, Double_t dx, Double_t dy, Double_t dz, const Double_t *origin, Double_t stepmax=TGeoShape::Big())
Compute distance from outside point to surface of the box.

Static Public Member Functions inherited from TGeoShape
static Double_t Big ()

static TClassClass ()

static const char * Class_Name ()

static constexpr Version_t Class_Version ()

static Double_t ComputeEpsMch ()
Compute machine round-off double precision error as the smallest number that if added to 1.0 is different than 1.0.

static const char * DeclFileName ()

static Double_t DistToPhiMin (const Double_t *point, const Double_t *dir, Double_t s1, Double_t c1, Double_t s2, Double_t c2, Double_t sm, Double_t cm, Bool_t in=kTRUE)
compute distance from point (inside phi) to both phi planes. Return minimum.

static Double_t EpsMch ()
static function returning the machine round-off error

static TGeoMatrixGetTransform ()
Returns current transformation matrix that applies to shape.

static Bool_t IsCloseToPhi (Double_t epsil, const Double_t *point, Double_t c1, Double_t s1, Double_t c2, Double_t s2)
True if point is closer than epsil to one of the phi planes defined by c1,s1 or c2,s2.

static Bool_t IsCrossingSemiplane (const Double_t *point, const Double_t *dir, Double_t cphi, Double_t sphi, Double_t &snext, Double_t &rxy)
Compute distance from POINT to semiplane defined by PHI angle along DIR.

static Bool_t IsInPhiRange (const Double_t *point, Double_t phi1, Double_t phi2)
Static method to check if a point is in the phi range (phi1, phi2) [degrees].

static Bool_t IsSameWithinTolerance (Double_t a, Double_t b)
Check if two numbers differ with less than a tolerance.

static Bool_t IsSegCrossing (Double_t x1, Double_t y1, Double_t x2, Double_t y2, Double_t x3, Double_t y3, Double_t x4, Double_t y4)
Check if segments (A,B) and (C,D) are crossing, where: A(x1,y1), B(x2,y2), C(x3,y3), D(x4,y4)

static void NormalPhi (const Double_t *point, const Double_t *dir, Double_t *norm, Double_t c1, Double_t s1, Double_t c2, Double_t s2)
Static method to compute normal to phi planes.

static Double_t SafetyPhi (const Double_t *point, Bool_t in, Double_t phi1, Double_t phi2)
Static method to compute safety w.r.t a phi corner defined by cosines/sines of the angles phi1, phi2.

static Double_t SafetySeg (Double_t r, Double_t z, Double_t r1, Double_t z1, Double_t r2, Double_t z2, Bool_t outer)
Compute distance from point of coordinates (r,z) to segment (r1,z1):(r2,z2)

static void SetTransform (TGeoMatrix *matrix)
Set current transformation matrix that applies to shape.

static Double_t Tolerance ()

Static Public Member Functions inherited from TNamed
static TClassClass ()

static const char * Class_Name ()

static constexpr Version_t Class_Version ()

static const char * DeclFileName ()

Static Public Member Functions inherited from TObject
static TClassClass ()

static const char * Class_Name ()

static constexpr Version_t Class_Version ()

static const char * DeclFileName ()

static Longptr_t GetDtorOnly ()
Return destructor only flag.

static Bool_t GetObjectStat ()
Get status of object stat flag.

static void SetDtorOnly (void *obj)
Set destructor only flag.

static void SetObjectStat (Bool_t stat)
Turn on/off tracking of objects in the TObjectTable.

## Protected Member Functions

TGeoPgon (const TGeoPgon &)=delete

Int_t GetPhiCrossList (const Double_t *point, const Double_t *dir, Int_t istart, Double_t *sphi, Int_t *iphi, Double_t stepmax=TGeoShape::Big()) const

Bool_t IsCrossingSlice (const Double_t *point, const Double_t *dir, Int_t iphi, Double_t sstart, Int_t &ipl, Double_t &snext, Double_t stepmax) const
Check crossing of a given pgon slice, from a starting point inside the slice.

void LocatePhi (const Double_t *point, Int_t &ipsec) const
Locates index IPSEC of the phi sector containing POINT.

TGeoPgonoperator= (const TGeoPgon &)=delete

Double_t Rpg (Double_t z, Int_t ipl, Bool_t inner, Double_t &a, Double_t &b) const
Computes projected pgon radius (inner or outer) corresponding to a given Z value.

Double_t Rproj (Double_t z, const Double_t *point, const Double_t *dir, Double_t cphi, Double_t sphi, Double_t &a, Double_t &b) const
Computes projected distance at a given Z for a given ray inside a given sector and fills coefficients: Rproj = a + b*z

void SetSegsAndPolsNoInside (TBuffer3D &buff) const
Fill TBuffer3D structure for segments and polygons, when no inner surface exists.

Bool_t SliceCrossing (const Double_t *point, const Double_t *dir, Int_t nphi, Int_t *iphi, Double_t *sphi, Double_t &snext, Double_t stepmax) const
Check boundary crossing inside phi slices.

Bool_t SliceCrossingIn (const Double_t *point, const Double_t *dir, Int_t ipl, Int_t nphi, Int_t *iphi, Double_t *sphi, Double_t &snext, Double_t stepmax) const
Check boundary crossing inside phi slices.

Bool_t SliceCrossingInZ (const Double_t *point, const Double_t *dir, Int_t nphi, Int_t *iphi, Double_t *sphi, Double_t &snext, Double_t stepmax) const
Performs ray propagation between Z segments.

Bool_t SliceCrossingZ (const Double_t *point, const Double_t *dir, Int_t nphi, Int_t *iphi, Double_t *sphi, Double_t &snext, Double_t stepmax) const
Performs ray propagation between Z segments.

Protected Member Functions inherited from TGeoPcon
TGeoPcon (const TGeoPcon &)=delete
Cosine of dphi.

Bool_t HasInsideSurface () const
Returns true when pgon has internal surface It will be only disabled when all Rmin values are 0.

TGeoPconoperator= (const TGeoPcon &)=delete

void SetSegsAndPolsNoInside (TBuffer3D &buff) const
Fill TBuffer3D structure for segments and polygons, when no inner surface exists.

Protected Member Functions inherited from TGeoBBox
TGeoBBox (const TGeoBBox &)=delete

void FillBuffer3D (TBuffer3D &buffer, Int_t reqSections, Bool_t localFrame) const override
Fills the supplied buffer, with sections in desired frame See TBuffer3D.h for explanation of sections, frame etc.

TGeoBBoxoperator= (const TGeoBBox &)=delete

Protected Member Functions inherited from TGeoShape
Int_t GetBasicColor () const
Get the basic color (0-7).

void SetOnBoundary (Bool_t)

void TransformPoints (Double_t *points, UInt_t NbPoints) const
Tranform a set of points (LocalToMaster)

Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
Interface to ErrorHandler (protected).

void MakeZombie ()

## Protected Attributes

std::mutex fMutex
Size for the navigation data array.

Int_t fNedges

Protected Attributes inherited from TGeoPcon
Double_t fC1 = 0
Full phi range flag.

Double_t fC2 = 0
Sine of phi1.

Double_t fCdphi = 0
Sine of (phi1+phi2)/2.

Double_t fCm = 0
Sine of phi1+dphi.

Double_t fDphi = 0

Bool_t fFullPhi = false

Int_t fNz = 0

Double_t fPhi1 = 0

Double_tfRmax = nullptr

Double_tfRmin = nullptr

Double_t fS1 = 0
Cosine of phi1.

Double_t fS2 = 0
Cosine of phi1+dphi.

Double_t fSm = 0
Cosine of (phi1+phi2)/2.

Double_tfZ = nullptr

Protected Attributes inherited from TGeoBBox
Double_t fDX

Double_t fDY

Double_t fDZ

Double_t fOrigin [3]

Protected Attributes inherited from TGeoShape
UInt_t fShapeBits

Int_t fShapeId

Protected Attributes inherited from TNamed
TString fName

TString fTitle

Public Types inherited from TGeoShape
enum  EShapeType {
kBitMask32 = 0xffffffff , kGeoNoShape = 0 , kGeoBad = (1ULL << ( 0 )) , kGeoRSeg = (1ULL << ( 1 )) ,
kGeoPhiSeg = (1ULL << ( 2 )) , kGeoThetaSeg = (1ULL << ( 3 )) , kGeoVisX = (1ULL << ( 4 )) , kGeoVisY = (1ULL << ( 5 )) ,
kGeoVisZ = (1ULL << ( 6 )) , kGeoRunTimeShape = (1ULL << ( 7 )) , kGeoInvalidShape = (1ULL << ( 8 )) , kGeoTorus = (1ULL << ( 9 )) ,
kGeoBox = (1ULL << ( 10 )) , kGeoPara = (1ULL << ( 11 )) , kGeoSph = (1ULL << ( 12 )) , kGeoTube = (1ULL << ( 13 )) ,
kGeoTubeSeg = (1ULL << ( 14 )) , kGeoCone = (1ULL << ( 15 )) , kGeoConeSeg = (1ULL << ( 16 )) , kGeoPcon = (1ULL << ( 17 )) ,
kGeoPgon = (1ULL << ( 18 )) , kGeoArb8 = (1ULL << ( 19 )) , kGeoEltu = (1ULL << ( 20 )) , kGeoTrap = (1ULL << ( 21 )) ,
kGeoCtub = (1ULL << ( 22 )) , kGeoTrd1 = (1ULL << ( 23 )) , kGeoTrd2 = (1ULL << ( 24 )) , kGeoComb = (1ULL << ( 25 )) ,
kGeoClosedShape = (1ULL << ( 26 )) , kGeoXtru = (1ULL << ( 27 )) , kGeoParaboloid = (1ULL << ( 28 )) , kGeoHalfSpace = (1ULL << ( 29 )) ,
kGeoHype = (1ULL << ( 30 )) , kGeoSavePrimitive = (1ULL << ( 20 ))
}

Public Types inherited from TObject
enum  {
kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,
}

enum  { kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum  EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum  EStatusBits {
kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) ,
kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 ))
}

Protected Types inherited from TObject
enum  { kOnlyPrepStep = (1ULL << ( 3 )) }

#include <TGeoPgon.h>

Inheritance diagram for TGeoPgon:
[legend]

## ◆ TGeoPgon() [1/5]

 TGeoPgon::TGeoPgon ( const TGeoPgon & )
protecteddelete

## ◆ TGeoPgon() [2/5]

 TGeoPgon::TGeoPgon ( )

dummy ctor

Definition at line 129 of file TGeoPgon.cxx.

## ◆ TGeoPgon() [3/5]

 TGeoPgon::TGeoPgon ( Double_t phi, Double_t dphi, Int_t nedges, Int_t nz )

Default constructor.

Definition at line 139 of file TGeoPgon.cxx.

## ◆ TGeoPgon() [4/5]

 TGeoPgon::TGeoPgon ( const char * name, Double_t phi, Double_t dphi, Int_t nedges, Int_t nz )

Default constructor.

Definition at line 150 of file TGeoPgon.cxx.

## ◆ TGeoPgon() [5/5]

 TGeoPgon::TGeoPgon ( Double_t * param )

Default constructor in GEANT3 style.

• param[0] = phi1
• param[1] = dphi
• param[2] = nedges
• param[3] = nz
• param[4] = z1
• param[5] = Rmin1
• param[6] = Rmax1 ...

Definition at line 170 of file TGeoPgon.cxx.

## ◆ ~TGeoPgon()

 TGeoPgon::~TGeoPgon ( )
override

destructor

Definition at line 182 of file TGeoPgon.cxx.

## ◆ Capacity()

 Double_t TGeoPgon::Capacity ( ) const
overridevirtual

Computes capacity of the shape in [length^3].

Reimplemented from TGeoPcon.

Definition at line 190 of file TGeoPgon.cxx.

## ◆ Class()

 static TClass * TGeoPgon::Class ( )
static
Returns
TClass describing this class

## ◆ Class_Name()

 static const char * TGeoPgon::Class_Name ( )
static
Returns
Name of this class

## ◆ Class_Version()

 static constexpr Version_t TGeoPgon::Class_Version ( )
inlinestaticconstexpr
Returns
Version of this class

Definition at line 118 of file TGeoPgon.h.

overridevirtual

Reimplemented from TGeoShape.

Definition at line 95 of file TGeoPgon.cxx.

## ◆ ComputeBBox()

 void TGeoPgon::ComputeBBox ( )
overridevirtual

compute bounding box for a polygone Check if the sections are in increasing Z order

Reimplemented from TGeoPcon.

Definition at line 215 of file TGeoPgon.cxx.

## ◆ ComputeNormal()

 void TGeoPgon::ComputeNormal ( const Double_t * point, const Double_t * dir, Double_t * norm )
overridevirtual

Compute normal to closest surface from POINT.

Reimplemented from TGeoPcon.

Definition at line 290 of file TGeoPgon.cxx.

## ◆ ComputeNormal_v()

 void TGeoPgon::ComputeNormal_v ( const Double_t * points, const Double_t * dirs, Double_t * norms, Int_t vecsize )
overridevirtual

Compute the normal for an array o points so that norm.dot.dir is positive Input: Arrays of point coordinates and directions + vector size Output: Array of normal directions.

Reimplemented from TGeoPcon.

Definition at line 2291 of file TGeoPgon.cxx.

## ◆ Contains()

 Bool_t TGeoPgon::Contains ( const Double_t * point ) const
overridevirtual

test if point is inside this shape check total z range

Reimplemented from TGeoPcon.

Definition at line 388 of file TGeoPgon.cxx.

## ◆ Contains_v()

 void TGeoPgon::Contains_v ( const Double_t * points, Bool_t * inside, Int_t vecsize ) const
overridevirtual

Check the inside status for each of the points in the array.

Input: Array of point coordinates + vector size Output: Array of Booleans for the inside of each point

Reimplemented from TGeoPcon.

Definition at line 2280 of file TGeoPgon.cxx.

overridevirtual

Reimplemented from TGeoShape.

Definition at line 110 of file TGeoPgon.cxx.

## ◆ DeclFileName()

 static const char * TGeoPgon::DeclFileName ( )
inlinestatic
Returns
Name of the file containing the class declaration

Definition at line 118 of file TGeoPgon.h.

## ◆ DistancetoPrimitive()

 Int_t TGeoPgon::DistancetoPrimitive ( Int_t px, Int_t py )
overridevirtual

compute closest distance from point px,py to each corner

Reimplemented from TGeoPcon.

Definition at line 1413 of file TGeoPgon.cxx.

## ◆ DistFromInside()

 Double_t TGeoPgon::DistFromInside ( const Double_t * point, const Double_t * dir, Int_t iact = 1, Double_t step = TGeoShape::Big(), Double_t * safe = nullptr ) const
overridevirtual

compute distance from inside point to surface of the polygone first find out in which Z section the point is in

Reimplemented from TGeoPcon.

Definition at line 446 of file TGeoPgon.cxx.

## ◆ DistFromInside_v()

 void TGeoPgon::DistFromInside_v ( const Double_t * points, const Double_t * dirs, Double_t * dists, Int_t vecsize, Double_t * step ) const
overridevirtual

Compute distance from array of input points having directions specified by dirs. Store output in dists.

Reimplemented from TGeoPcon.

Definition at line 2300 of file TGeoPgon.cxx.

## ◆ DistFromOutside()

 Double_t TGeoPgon::DistFromOutside ( const Double_t * point, const Double_t * dir, Int_t iact = 1, Double_t step = TGeoShape::Big(), Double_t * safe = nullptr ) const
overridevirtual

Compute distance from outside point to surface of the polygone.

Reimplemented from TGeoPcon.

Definition at line 1186 of file TGeoPgon.cxx.

## ◆ DistFromOutside_v()

 void TGeoPgon::DistFromOutside_v ( const Double_t * points, const Double_t * dirs, Double_t * dists, Int_t vecsize, Double_t * step ) const
overridevirtual

Compute distance from array of input points having directions specified by dirs. Store output in dists.

Reimplemented from TGeoPcon.

Definition at line 2310 of file TGeoPgon.cxx.

## ◆ Divide()

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

Divide this polygone 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. Phi divisions are allowed only if nedgesndiv=0 and create polygone "segments" with nedges/ndiv edges. Z divisions can be performed if the divided range is in between two consecutive Z planes. In case a wrong division axis is supplied, returns pointer to volume that was divided.

Reimplemented from TGeoPcon.

Definition at line 1429 of file TGeoPgon.cxx.

## ◆ GetBoundingCylinder()

 void TGeoPgon::GetBoundingCylinder ( Double_t * param ) const
overridevirtual

Fill vector param[4] with the bounding cylinder parameters.

The order is the following : Rmin, Rmax, Phi1, Phi2

Reimplemented from TGeoPcon.

Definition at line 1515 of file TGeoPgon.cxx.

## ◆ GetBuffer3D()

 const TBuffer3D & TGeoPgon::GetBuffer3D ( Int_t reqSections, Bool_t localFrame ) const
overridevirtual

Fills a static 3D buffer and returns a reference.

Reimplemented from TGeoPcon.

Definition at line 2245 of file TGeoPgon.cxx.

## ◆ GetByteCount()

 Int_t TGeoPgon::GetByteCount ( ) const
inlineoverridevirtual

Reimplemented from TGeoPcon.

Definition at line 90 of file TGeoPgon.h.

## ◆ GetMakeRuntimeShape()

 TGeoShape * TGeoPgon::GetMakeRuntimeShape ( TGeoShape * mother, TGeoMatrix * mat ) const
inlineoverridevirtual

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

Reimplemented from TGeoPcon.

Definition at line 91 of file TGeoPgon.h.

## ◆ GetMeshNumbers()

 void TGeoPgon::GetMeshNumbers ( Int_t & nvert, Int_t & nsegs, Int_t & npols ) const
overridevirtual

Returns numbers of vertices, segments and polygons composing the shape mesh.

Reimplemented from TGeoPcon.

Definition at line 2203 of file TGeoPgon.cxx.

## ◆ GetNedges()

 Int_t TGeoPgon::GetNedges ( ) const
inline

Definition at line 93 of file TGeoPgon.h.

## ◆ GetNmeshVertices()

 Int_t TGeoPgon::GetNmeshVertices ( ) const
overridevirtual

Return number of vertices of the mesh representation.

Reimplemented from TGeoPcon.

Definition at line 2228 of file TGeoPgon.cxx.

## ◆ GetNsegments()

 Int_t TGeoPgon::GetNsegments ( ) const
inlineoverridevirtual

Returns number of segments on each mesh circle segment.

Reimplemented from TGeoPcon.

Definition at line 95 of file TGeoPgon.h.

## ◆ GetPhiCrossList()

 Int_t TGeoPgon::GetPhiCrossList ( const Double_t * point, const Double_t * dir, Int_t istart, Double_t * sphi, Int_t * iphi, Double_t stepmax = TGeoShape::Big() ) const
protected

Returns lists of PGON phi crossings for a ray starting from POINT.

Definition at line 571 of file TGeoPgon.cxx.

## ◆ GetPointsOnSegments()

 Bool_t TGeoPgon::GetPointsOnSegments ( Int_t npoints, Double_t * array ) const
inlineoverridevirtual

Fills array with n random points located on the line segments of the shape mesh.

The output array must be provided with a length of minimum 3*npoints. Returns true if operation is implemented.

Reimplemented from TGeoPcon.

Definition at line 96 of file TGeoPgon.h.

Definition at line 87 of file TGeoPgon.cxx.

## ◆ InspectShape()

 void TGeoPgon::InspectShape ( ) const
overridevirtual

Inspect the PGON parameters.

Reimplemented from TGeoPcon.

Definition at line 1541 of file TGeoPgon.cxx.

## ◆ IsA()

 TClass * TGeoPgon::IsA ( ) const
inlineoverridevirtual
Returns
TClass describing current object

Reimplemented from TGeoPcon.

Definition at line 118 of file TGeoPgon.h.

## ◆ IsCrossingSlice()

 Bool_t TGeoPgon::IsCrossingSlice ( const Double_t * point, const Double_t * dir, Int_t iphi, Double_t sstart, Int_t & ipl, Double_t & snext, Double_t stepmax ) const
protected

Check crossing of a given pgon slice, from a starting point inside the slice.

Definition at line 1072 of file TGeoPgon.cxx.

## ◆ LocatePhi()

 void TGeoPgon::LocatePhi ( const Double_t * point, Int_t & ipsec ) const
protected

Locates index IPSEC of the phi sector containing POINT.

Definition at line 558 of file TGeoPgon.cxx.

## ◆ MakeBuffer3D()

 TBuffer3D * TGeoPgon::MakeBuffer3D ( ) const
overridevirtual

Creates a TBuffer3D describing this shape.

Coordinates are in local reference frame.

Reimplemented from TGeoPcon.

Definition at line 1552 of file TGeoPgon.cxx.

## ◆ operator=()

 TGeoPgon & TGeoPgon::operator= ( const TGeoPgon & )
protecteddelete

## ◆ Rpg()

 Double_t TGeoPgon::Rpg ( Double_t z, Int_t ipl, Bool_t inner, Double_t & a, Double_t & b ) const
protected

Computes projected pgon radius (inner or outer) corresponding to a given Z value.

Fills corresponding coefficients of: Rpg(z) = a + b*z

Note: ipl must be in range [0,fNz-2]

Definition at line 1852 of file TGeoPgon.cxx.

## ◆ Rproj()

 Double_t TGeoPgon::Rproj ( Double_t z, const Double_t * point, const Double_t * dir, Double_t cphi, Double_t sphi, Double_t & a, Double_t & b ) const
protected

Computes projected distance at a given Z for a given ray inside a given sector and fills coefficients: Rproj = a + b*z

Definition at line 1886 of file TGeoPgon.cxx.

## ◆ Safety()

 Double_t TGeoPgon::Safety ( const Double_t * point, Bool_t in = kTRUE ) const
overridevirtual

computes the closest distance from given point to this shape, according to option.

The matching point on the shape is stored in spoint.

Reimplemented from TGeoPcon.

Definition at line 1979 of file TGeoPgon.cxx.

## ◆ Safety_v()

 void TGeoPgon::Safety_v ( const Double_t * points, const Bool_t * inside, Double_t * safe, Int_t vecsize ) const
overridevirtual

Compute safe distance from each of the points in the input array.

Input: Array of point coordinates, array of statuses for these points, size of the arrays Output: Safety values

Reimplemented from TGeoPcon.

Definition at line 2322 of file TGeoPgon.cxx.

## ◆ SafetyToSegment()

 Double_t TGeoPgon::SafetyToSegment ( const Double_t * point, Int_t ipl, Int_t iphi, Bool_t in, Double_t safphi, Double_t safmin = TGeoShape::Big() ) const

Compute safety from POINT to segment between planes ipl, ipl+1 within safmin.

Definition at line 1902 of file TGeoPgon.cxx.

## ◆ SavePrimitive()

 void TGeoPgon::SavePrimitive ( std::ostream & out, Option_t * option = "" )
overridevirtual

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

Reimplemented from TGeoPcon.

Definition at line 2065 of file TGeoPgon.cxx.

## ◆ SetDimensions()

 void TGeoPgon::SetDimensions ( Double_t * param )
overridevirtual

Set PGON dimensions starting from an array.

Reimplemented from TGeoPcon.

Definition at line 2088 of file TGeoPgon.cxx.

## ◆ SetNedges()

 void TGeoPgon::SetNedges ( Int_t ne )
inline

Definition at line 108 of file TGeoPgon.h.

## ◆ SetPoints() [1/2]

 void TGeoPgon::SetPoints ( Double_t * points ) const
overridevirtual

create polygone mesh points

Reimplemented from TGeoPcon.

Definition at line 2117 of file TGeoPgon.cxx.

## ◆ SetPoints() [2/2]

 void TGeoPgon::SetPoints ( Float_t * points ) const
overridevirtual

create polygone mesh points

Reimplemented from TGeoPcon.

Definition at line 2160 of file TGeoPgon.cxx.

## ◆ SetSegsAndPols()

 void TGeoPgon::SetSegsAndPols ( TBuffer3D & buff ) const
overridevirtual

Fill TBuffer3D structure for segments and polygons.

Reimplemented from TGeoPcon.

Definition at line 1573 of file TGeoPgon.cxx.

## ◆ SetSegsAndPolsNoInside()

 void TGeoPgon::SetSegsAndPolsNoInside ( TBuffer3D & buff ) const
protected

Fill TBuffer3D structure for segments and polygons, when no inner surface exists.

Definition at line 1756 of file TGeoPgon.cxx.

## ◆ Sizeof3D()

 void TGeoPgon::Sizeof3D ( ) const
overridevirtual

fill size of this 3-D object

Reimplemented from TGeoPcon.

Definition at line 2240 of file TGeoPgon.cxx.

## ◆ SliceCrossing()

 Bool_t TGeoPgon::SliceCrossing ( const Double_t * point, const Double_t * dir, Int_t nphi, Int_t * iphi, Double_t * stepphi, Double_t & snext, Double_t stepmax ) const
protected

Check boundary crossing inside phi slices.

Return distance snext to first crossing if smaller than stepmax.

Definition at line 969 of file TGeoPgon.cxx.

## ◆ SliceCrossingIn()

 Bool_t TGeoPgon::SliceCrossingIn ( const Double_t * point, const Double_t * dir, Int_t ipl, Int_t nphi, Int_t * iphi, Double_t * stepphi, Double_t & snext, Double_t stepmax ) const
protected

Check boundary crossing inside phi slices.

Return distance snext to first crossing if smaller than stepmax. Protection in case point is in phi gap or close to phi boundaries and exiting

Definition at line 825 of file TGeoPgon.cxx.

## ◆ SliceCrossingInZ()

 Bool_t TGeoPgon::SliceCrossingInZ ( const Double_t * point, const Double_t * dir, Int_t nphi, Int_t * iphi, Double_t * sphi, Double_t & snext, Double_t stepmax ) const
protected

Performs ray propagation between Z segments.

Definition at line 656 of file TGeoPgon.cxx.

## ◆ SliceCrossingZ()

 Bool_t TGeoPgon::SliceCrossingZ ( const Double_t * point, const Double_t * dir, Int_t nphi, Int_t * iphi, Double_t * sphi, Double_t & snext, Double_t stepmax ) const
protected

Performs ray propagation between Z segments.

Definition at line 735 of file TGeoPgon.cxx.

## ◆ Streamer()

 void TGeoPgon::Streamer ( TBuffer & R__b )
overridevirtual

Stream an object of class TGeoPcon.

Reimplemented from TGeoPcon.

## ◆ StreamerNVirtual()

 void TGeoPgon::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )
inline

Definition at line 118 of file TGeoPgon.h.

## ◆ fMutex

 std::mutex TGeoPgon::fMutex
mutableprotected

Size for the navigation data array.

Definition at line 38 of file TGeoPgon.h.

## ◆ fNedges

 Int_t TGeoPgon::fNedges
protected

Definition at line 35 of file TGeoPgon.h.

mutableprotected

Definition at line 36 of file TGeoPgon.h.