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);

Double_t

double Double_t

Definition RtypesCore.h:59

TGeoPgon::TGeoPgon

TGeoPgon()

dummy ctor

Definition TGeoPgon.cxx:132

int

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.

Classes
struct	ThreadData_t

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.

virtual	~TGeoPgon ()
	destructor

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

void	ClearThreadData () const

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

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

virtual void	ComputeNormal_v (const Double_t points, const Double_t dirs, Double_t *norms, Int_t vecsize)
	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.

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

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

void	CreateThreadData (Int_t nthreads)
	Create thread data for n threads max.

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

virtual Double_t	DistFromInside (const Double_t point, const Double_t dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=0) const
	compute distance from inside point to surface of the polygone first find out in which Z section the point is in

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

virtual Double_t	DistFromOutside (const Double_t point, const Double_t dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=0) const
	Compute distance from outside point to surface of the polygone.

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

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

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

virtual const TBuffer3D &	GetBuffer3D (Int_t reqSections, Bool_t localFrame) const
	Fills a static 3D buffer and returns a reference.

virtual Int_t	GetByteCount () const

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

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

Int_t	GetNedges () const

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

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

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

ThreadData_t &	GetThreadData () const

virtual void	InspectShape () const
	Inspect the PGON parameters.

virtual TBuffer3D *	MakeBuffer3D () const
	Creates a TBuffer3D describing this shape.

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

virtual void	Safety_v (const Double_t points, const Bool_t inside, Double_t *safe, Int_t vecsize) const
	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.

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

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

void	SetNedges (Int_t ne)

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

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

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

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

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.

virtual	~TGeoPcon ()
	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_t &	Dphi ()

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

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

Double_t	GetDphi () const

Int_t	GetNz () const

Double_t	GetPhi1 () const

Double_t *	GetRmax () const

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

Double_t *	GetRmin () const

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

Double_t *	GetZ () const

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

virtual Bool_t	IsCylType () const

Double_t &	Phi1 ()

Double_t &	Rmax (Int_t ipl)

Double_t &	Rmin (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.

Double_t &	Z (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=0)
	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=0)
	Constructor where half-lengths are provided.

virtual	~TGeoBBox ()
	Destructor.

virtual Bool_t	CouldBeCrossed (const Double_t point, const Double_t dir) const
	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.

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

virtual const Double_t *	GetOrigin () 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

virtual Bool_t	IsValidBox () const

void	SetBoxDimensions (Double_t dx, Double_t dy, Double_t dz, Double_t *origin=0)
	Set parameters of the box.

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

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

	TGeoShape (const char *name)
	Default constructor.

virtual	~TGeoShape ()
	Destructor.

virtual void	AfterStreamer ()

void	CheckShape (Int_t testNo, Int_t nsamples=10000, Option_t *option="")
	Test for shape navigation methods.

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

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

Int_t	GetId () const

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

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

void	InvertShapeBit (UInt_t f)

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

virtual void	Paint (Option_t *option="")
	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.

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.

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

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.

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

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

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

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

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

virtual Bool_t	IsSortable () const

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

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

virtual void	Print (Option_t *option="") const
	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.

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.

virtual void	AppendPad (Option_t *option="")
	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 TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`.

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=0)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	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 TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

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

virtual Option_t *	GetDrawOption () 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_t *	GetOption () 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.

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)
	Operator delete [].

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)

TObject &	operator= (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.

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=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

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

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
	Mutex for thread data.

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.

TGeoPgon &	operator= (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.

TGeoPcon &	operator= (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

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

TGeoBBox &	operator= (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

std::vector< ThreadData_t * >	fThreadData

Int_t	fThreadSize
	Navigation data per thread.

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_t *	fRmax = nullptr

Double_t *	fRmin = 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_t *	fZ = 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

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

Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

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

enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }

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

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 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 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 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 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 TGeoMatrix *	GetTransform ()
	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 TObject
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 Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

#include <TGeoPgon.h>

Inheritance diagram for TGeoPgon:

[legend]

Constructor & Destructor Documentation

◆ TGeoPgon() [1/5]

TGeoPgon::TGeoPgon ( const TGeoPgon & )

protecteddelete

◆ TGeoPgon() [2/5]

TGeoPgon::TGeoPgon ( )

dummy ctor

Definition at line 132 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 142 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 153 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 173 of file TGeoPgon.cxx.

◆ ~TGeoPgon()

TGeoPgon::~TGeoPgon ( )

virtual

destructor

Definition at line 185 of file TGeoPgon.cxx.

Member Function Documentation

◆ Capacity()

Double_t TGeoPgon::Capacity ( ) const

virtual

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

Reimplemented from TGeoPcon.

Definition at line 193 of file TGeoPgon.cxx.

◆ ClearThreadData()

void TGeoPgon::ClearThreadData ( ) const

virtual

Reimplemented from TGeoShape.

Definition at line 99 of file TGeoPgon.cxx.

◆ ComputeBBox()

void TGeoPgon::ComputeBBox ( )

virtual

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

Reimplemented from TGeoPcon.

Definition at line 217 of file TGeoPgon.cxx.

◆ ComputeNormal()

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

virtual

Compute normal to closest surface from POINT.

Reimplemented from TGeoPcon.

Definition at line 284 of file TGeoPgon.cxx.

◆ ComputeNormal_v()

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

virtual

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 2142 of file TGeoPgon.cxx.

◆ Contains()

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

virtual

test if point is inside this shape check total z range

Reimplemented from TGeoPcon.

Definition at line 379 of file TGeoPgon.cxx.

◆ Contains_v()

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

virtual

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 2132 of file TGeoPgon.cxx.

◆ CreateThreadData()

void TGeoPgon::CreateThreadData ( Int_t nthreads )

virtual

Create thread data for n threads max.

Reimplemented from TGeoShape.

Definition at line 114 of file TGeoPgon.cxx.

◆ DistancetoPrimitive()

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

virtual

compute closest distance from point px,py to each corner

Reimplemented from TGeoPcon.

Definition at line 1291 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 = `0`
	)		const

virtual

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 426 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

virtual

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

Reimplemented from TGeoPcon.

Definition at line 2150 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 = `0`
	)		const

virtual

Compute distance from outside point to surface of the polygone.

Reimplemented from TGeoPcon.

Definition at line 1101 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

virtual

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

Reimplemented from TGeoPcon.

Definition at line 2159 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
	)

virtual

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 1306 of file TGeoPgon.cxx.

◆ GetBoundingCylinder()

void TGeoPgon::GetBoundingCylinder ( Double_t * param ) const

virtual

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

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

Reimplemented from TGeoPcon.

Definition at line 1391 of file TGeoPgon.cxx.

◆ GetBuffer3D()

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

virtual

Fills a static 3D buffer and returns a reference.

Reimplemented from TGeoPcon.

Definition at line 2097 of file TGeoPgon.cxx.

◆ GetByteCount()

virtual Int_t TGeoPgon::GetByteCount ( ) const

inlinevirtual

Reimplemented from TGeoPcon.

Definition at line 83 of file TGeoPgon.h.

◆ GetMakeRuntimeShape()

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

inlinevirtual

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

Reimplemented from TGeoPcon.

Definition at line 84 of file TGeoPgon.h.

◆ GetMeshNumbers()

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

virtual

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

Reimplemented from TGeoPcon.

Definition at line 2054 of file TGeoPgon.cxx.

◆ GetNedges()

Int_t TGeoPgon::GetNedges ( ) const

inline

Definition at line 86 of file TGeoPgon.h.

◆ GetNmeshVertices()

Int_t TGeoPgon::GetNmeshVertices ( ) const

virtual

Return number of vertices of the mesh representation.

Reimplemented from TGeoPcon.

Definition at line 2078 of file TGeoPgon.cxx.

◆ GetNsegments()

virtual Int_t TGeoPgon::GetNsegments ( ) const

inlinevirtual

Returns number of segments on each mesh circle segment.

Reimplemented from TGeoPcon.

Definition at line 88 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

Mutex for thread data.

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

Definition at line 537 of file TGeoPgon.cxx.

◆ GetPointsOnSegments()

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

inlinevirtual

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 89 of file TGeoPgon.h.

◆ GetThreadData()

TGeoPgon::ThreadData_t & TGeoPgon::GetThreadData ( ) const

Definition at line 91 of file TGeoPgon.cxx.

◆ InspectShape()

void TGeoPgon::InspectShape ( ) const

virtual

Inspect the PGON parameters.

Reimplemented from TGeoPcon.

Definition at line 1415 of file TGeoPgon.cxx.

◆ 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 996 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 526 of file TGeoPgon.cxx.

◆ MakeBuffer3D()

TBuffer3D * TGeoPgon::MakeBuffer3D ( ) const

virtual

Creates a TBuffer3D describing this shape.

Coordinates are in local reference frame.

Reimplemented from TGeoPcon.

Definition at line 1426 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 1725 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 1759 of file TGeoPgon.cxx.

◆ Safety()

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

virtual

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 1845 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

virtual

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 2170 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 1775 of file TGeoPgon.cxx.

◆ SavePrimitive()

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

virtual

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

Reimplemented from TGeoPcon.

Definition at line 1921 of file TGeoPgon.cxx.

◆ SetDimensions()

void TGeoPgon::SetDimensions ( Double_t * param )

virtual

Set PGON dimensions starting from an array.

Reimplemented from TGeoPcon.

Definition at line 1943 of file TGeoPgon.cxx.

◆ SetNedges()

void TGeoPgon::SetNedges ( Int_t ne )

inline

Definition at line 97 of file TGeoPgon.h.

◆ SetPoints() [1/2]

void TGeoPgon::SetPoints ( Double_t * points ) const

virtual

create polygone mesh points

Reimplemented from TGeoPcon.

Definition at line 1968 of file TGeoPgon.cxx.

◆ SetPoints() [2/2]

void TGeoPgon::SetPoints ( Float_t * points ) const

virtual

create polygone mesh points

Reimplemented from TGeoPcon.

Definition at line 2011 of file TGeoPgon.cxx.

◆ SetSegsAndPols()

void TGeoPgon::SetSegsAndPols ( TBuffer3D & buff ) const

virtual

Fill TBuffer3D structure for segments and polygons.

Reimplemented from TGeoPcon.

Definition at line 1447 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 1629 of file TGeoPgon.cxx.

◆ Sizeof3D()

void TGeoPgon::Sizeof3D ( ) const

virtual

fill size of this 3-D object

Reimplemented from TGeoPcon.

Definition at line 2090 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 907 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 771 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 617 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 690 of file TGeoPgon.cxx.

Member Data Documentation

◆ fMutex

std::mutex TGeoPgon::fMutex

mutableprotected

Size for the navigation data array.

Definition at line 40 of file TGeoPgon.h.

◆ fNedges

Int_t TGeoPgon::fNedges

protected

Definition at line 37 of file TGeoPgon.h.

◆ fThreadData

std::vector<ThreadData_t*> TGeoPgon::fThreadData

mutableprotected

Definition at line 38 of file TGeoPgon.h.

◆ fThreadSize

Int_t TGeoPgon::fThreadSize

mutableprotected

Navigation data per thread.

Definition at line 39 of file TGeoPgon.h.

Libraries for TGeoPgon:

[legend]

The documentation for this class was generated from the following files:

geom/geom/inc/TGeoPgon.h
geom/geom/src/TGeoPgon.cxx

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TGeoPgon() [1/5]

◆ TGeoPgon() [2/5]

◆ TGeoPgon() [3/5]

◆ TGeoPgon() [4/5]

◆ TGeoPgon() [5/5]

◆ ~TGeoPgon()

Member Function Documentation

◆ Capacity()

◆ ClearThreadData()

◆ ComputeBBox()

◆ ComputeNormal()

◆ ComputeNormal_v()

◆ Contains()

◆ Contains_v()

◆ CreateThreadData()

◆ DistancetoPrimitive()

◆ DistFromInside()

◆ DistFromInside_v()

◆ DistFromOutside()

◆ DistFromOutside_v()

◆ Divide()

◆ GetBoundingCylinder()

◆ GetBuffer3D()

◆ GetByteCount()

◆ GetMakeRuntimeShape()

◆ GetMeshNumbers()

◆ GetNedges()

◆ GetNmeshVertices()

◆ GetNsegments()

◆ GetPhiCrossList()

◆ GetPointsOnSegments()

◆ GetThreadData()

◆ InspectShape()

◆ IsCrossingSlice()

◆ LocatePhi()

◆ MakeBuffer3D()

◆ operator=()

◆ Rpg()

◆ Rproj()

◆ Safety()

◆ Safety_v()

◆ SafetyToSegment()

◆ SavePrimitive()

◆ SetDimensions()

◆ SetNedges()

◆ SetPoints() [1/2]

◆ SetPoints() [2/2]

◆ SetSegsAndPols()

◆ SetSegsAndPolsNoInside()

◆ Sizeof3D()

◆ SliceCrossing()

◆ SliceCrossingIn()

◆ SliceCrossingInZ()

◆ SliceCrossingZ()

Member Data Documentation

◆ fMutex

◆ fNedges

◆ fThreadData

◆ fThreadSize