A TGeoXtru shape is represented by the extrusion of an arbitrary polygon with fixed outline between several Z sections.

Each Z section is a scaled version of the same "blueprint" polygon. Different global XY translations are allowed from section to section. Corresponding polygon vertices from consecutive sections are connected.

An extruded polygon can be created using the constructor:

TGeoXtru::TGeoXtru(Int_t nplanes);

TGeoXtru::TGeoXtru

TGeoXtru()

dummy ctor

Definition TGeoXtru.cxx:191

int

nplanes:number of Z sections (minimum 2)

The lists of X and Y positions for all vertices have to be provided for the "blueprint" polygon:

TGeoXtru::DefinePolygon (Int_t nvertices, Double_t *xv,

Double_t *yv);

Double_t

double Double_t

Definition RtypesCore.h:59

TGeoXtru::DefinePolygon

Bool_t DefinePolygon(Int_t nvert, const Double_t *xv, const Double_t *yv)

Creates the polygon representing the blueprint of any Xtru section.

Definition TGeoXtru.cxx:691

nvertices:number of vertices of the polygon
xv,yv:arrays of X and Y coordinates for polygon vertices

The method creates an object of the class **TGeoPolygon** for which the convexity is automatically determined . The polygon is decomposed into convex polygons if needed.

Next step is to define the Z positions for each section plane as well as the XY offset and scaling for the corresponding polygons.

TGeoXtru::DefineSection(Int_t snum,Double_t zsection,Double_t x0,

Double_t y0, Double_t scale);

TGeoXtru::DefineSection

virtual void DefineSection(Int_t snum, Double_t z, Double_t x0=0., Double_t y0=0., Double_t scale=1.)

defines z position of a section plane, rmin and rmax at this z.

Definition TGeoXtru.cxx:724

snum:Z section index (0, nplanes-1). The section with snum = nplanes-1 must be defined last and triggers the computation of the bounding box for the whole shape
zsection:Z position of section snum. Sections must be defined in increasing order of Z (e.g. snum=0 correspond to the minimum Z and snum=nplanes-1 to the maximum one).
x0,y0:offset of section snum with respect to the local shape reference frame T
scale:factor that multiplies the X/Y coordinates of each vertex of the polygon at section snum:
x[ivert] = x0 + scale*xv[ivert]
y[ivert] = y0 + scale*yv[ivert]

Definition at line 22 of file TGeoXtru.h.

Classes
struct	ThreadData_t

Public Member Functions
	TGeoXtru ()
	dummy ctor

	TGeoXtru (Double_t *param)
	Default constructor in GEANT3 style.

	TGeoXtru (Int_t nz)
	Default constructor.

virtual	~TGeoXtru ()
	destructor

virtual Double_t	Capacity () const
	Compute capacity [length^3] of this shape.

virtual void	ClearThreadData () const

virtual void	ComputeBBox ()
	compute bounding box of the pcon

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

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.

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

Bool_t	DefinePolygon (Int_t nvert, const Double_t xv, const Double_t yv)
	Creates the polygon representing the blueprint of any Xtru section.

virtual void	DefineSection (Int_t snum, Double_t z, Double_t x0=0., Double_t y0=0., Double_t scale=1.)
	defines z position of a section plane, rmin and rmax at this z.

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 polycone locate Z segment

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 tube Warning("DistFromOutside", "not implemented");

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.

void	DrawPolygon (Option_t *option="")
	Draw the section polygon.

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

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.

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

Int_t	GetNvert () const

Int_t	GetNz () const

Double_t	GetScale (Int_t i) const

ThreadData_t &	GetThreadData () const

Double_t	GetX (Int_t i) const

Double_t	GetXOffset (Int_t i) const

Double_t	GetY (Int_t i) const

Double_t	GetYOffset (Int_t i) const

Double_t *	GetZ () const

Double_t	GetZ (Int_t ipl) const
	Return the Z coordinate for segment ipl.

virtual void	InspectShape () const
	Print actual Xtru 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.

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

void	SetCurrentVertices (Double_t x0, Double_t y0, Double_t scale)
	Set current vertex coordinates according X0, Y0 and SCALE.

void	SetCurrentZ (Double_t z, Int_t iz)
	Recompute current section vertices for a given Z position within range of section iz.

virtual void	SetDimensions (Double_t *param)

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

virtual void	SetPoints (Float_t *points) const
	create polycone 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

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

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.

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

virtual Int_t	GetByteCount () const

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

virtual Bool_t	IsCylType () const

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
	TGeoXtru (const TGeoXtru &)=delete
	mutex for thread data

Double_t	DistToPlane (const Double_t point, const Double_t dir, Int_t iz, Int_t ivert, Double_t stepmax, Bool_t in) const
	Compute distance to a Xtru lateral surface.

void	GetPlaneNormal (const Double_t vert, Double_t norm) const
	Returns normal vector to the planar quadrilateral defined by vector VERT.

void	GetPlaneVertices (Int_t iz, Int_t ivert, Double_t *vert) const
	Returns (x,y,z) of 3 vertices of the surface defined by Z sections (iz, iz+1) and polygon vertices (ivert, ivert+1).

Bool_t	IsPointInsidePlane (const Double_t point, Double_t vert, Double_t *norm) const
	Check if the quadrilateral defined by VERT contains a coplanar POINT.

TGeoXtru &	operator= (const TGeoXtru &)=delete

Double_t	SafetyToSector (const Double_t *point, Int_t iz, Double_t safmin, Bool_t in)
	Compute safety to sector iz, returning also the closest segment index.

void	SetIz (Int_t iz)
	Set current z-plane.

void	SetSeg (Int_t iseg)
	Set current segment.

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 of thread-specific array

Int_t	fNvert

Int_t	fNz

Double_t *	fScale

std::vector< ThreadData_t * >	fThreadData

Int_t	fThreadSize
	Navigation data per thread.

Double_t *	fX

Double_t *	fX0

Double_t *	fY

Double_t *	fY0

Double_t *	fZ

Double_t	fZcurrent

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 <TGeoXtru.h>

Inheritance diagram for TGeoXtru:

[legend]

Constructor & Destructor Documentation

◆ TGeoXtru() [1/4]

TGeoXtru::TGeoXtru ( const TGeoXtru & )

protecteddelete

mutex for thread data

◆ TGeoXtru() [2/4]

TGeoXtru::TGeoXtru ( )

dummy ctor

Definition at line 191 of file TGeoXtru.cxx.

◆ TGeoXtru() [3/4]

TGeoXtru::TGeoXtru ( Int_t nz )

Default constructor.

Definition at line 211 of file TGeoXtru.cxx.

◆ TGeoXtru() [4/4]

TGeoXtru::TGeoXtru ( Double_t * param )

Default constructor in GEANT3 style.

param[0] = nz // number of z planes
param[1] = z1 // Z position of first plane
param[2] = x1 // X position of first plane
param[3] = y1 // Y position of first plane
param[4] = scale1 // scale factor for first plane ...
param[4*(nz-1]+1] = zn
param[4*(nz-1)+2] = xn
param[4*(nz-1)+3] = yn
param[4*(nz-1)+4] = scalen

Definition at line 247 of file TGeoXtru.cxx.

◆ ~TGeoXtru()

TGeoXtru::~TGeoXtru ( )

virtual

destructor

Definition at line 268 of file TGeoXtru.cxx.

Member Function Documentation

◆ Capacity()

Double_t TGeoXtru::Capacity ( ) const

virtual

Compute capacity [length^3] of this shape.

Reimplemented from TGeoBBox.

Definition at line 282 of file TGeoXtru.cxx.

◆ ClearThreadData()

void TGeoXtru::ClearThreadData ( ) const

virtual

Reimplemented from TGeoShape.

Definition at line 134 of file TGeoXtru.cxx.

◆ ComputeBBox()

void TGeoXtru::ComputeBBox ( )

virtual

compute bounding box of the pcon

Reimplemented from TGeoBBox.

Definition at line 304 of file TGeoXtru.cxx.

◆ ComputeNormal()

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

virtual

Compute normal to closest surface from POINT.

Reimplemented from TGeoBBox.

Definition at line 338 of file TGeoXtru.cxx.

◆ ComputeNormal_v()

void TGeoXtru::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 TGeoBBox.

Definition at line 1306 of file TGeoXtru.cxx.

◆ Contains()

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

virtual

test if point is inside this shape

Reimplemented from TGeoBBox.

Definition at line 360 of file TGeoXtru.cxx.

◆ Contains_v()

void TGeoXtru::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 TGeoBBox.

Definition at line 1296 of file TGeoXtru.cxx.

◆ CreateThreadData()

void TGeoXtru::CreateThreadData ( Int_t nthreads )

virtual

Create thread data for n threads max.

Reimplemented from TGeoShape.

Definition at line 150 of file TGeoXtru.cxx.

◆ DefinePolygon()

Bool_t TGeoXtru::DefinePolygon	(	Int_t	nvert,
		const Double_t *	xv,
		const Double_t *	yv
	)

Creates the polygon representing the blueprint of any Xtru section.

nvert = number of vertices >2
xv[nvert] = array of X vertex positions
yv[nvert] = array of Y vertex positions

NOTE should be called before DefineSection or ctor with 'param'

Definition at line 691 of file TGeoXtru.cxx.

◆ DefineSection()

void TGeoXtru::DefineSection	(	Int_t	snum,
		Double_t	z,
		Double_t	x0 = `0.`,
		Double_t	y0 = `0.`,
		Double_t	scale = `1.`
	)

virtual

defines z position of a section plane, rmin and rmax at this z.

Definition at line 724 of file TGeoXtru.cxx.

◆ DistancetoPrimitive()

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

virtual

compute closest distance from point px,py to each corner

Reimplemented from TGeoBBox.

Definition at line 391 of file TGeoXtru.cxx.

◆ DistFromInside()

Double_t TGeoXtru::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 polycone locate Z segment

Reimplemented from TGeoBBox.

Definition at line 465 of file TGeoXtru.cxx.

◆ DistFromInside_v()

void TGeoXtru::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 TGeoBBox.

Definition at line 1314 of file TGeoXtru.cxx.

◆ DistFromOutside()

Double_t TGeoXtru::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 tube Warning("DistFromOutside", "not implemented");

Reimplemented from TGeoBBox.

Definition at line 579 of file TGeoXtru.cxx.

◆ DistFromOutside_v()

void TGeoXtru::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 TGeoBBox.

Definition at line 1322 of file TGeoXtru.cxx.

◆ DistToPlane()

Double_t TGeoXtru::DistToPlane	(	const Double_t *	point,
		const Double_t *	dir,
		Int_t	iz,
		Int_t	ivert,
		Double_t	stepmax,
		Bool_t	in
	)		const

protected

Compute distance to a Xtru lateral surface.

Definition at line 409 of file TGeoXtru.cxx.

◆ DrawPolygon()

void TGeoXtru::DrawPolygon ( Option_t * option = "" )

Draw the section polygon.

Definition at line 400 of file TGeoXtru.cxx.

◆ GetBuffer3D()

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

virtual

Fills a static 3D buffer and returns a reference.

Reimplemented from TGeoBBox.

Definition at line 1261 of file TGeoXtru.cxx.

◆ GetMakeRuntimeShape()

virtual TGeoShape * TGeoXtru::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 TGeoBBox.

Definition at line 103 of file TGeoXtru.h.

◆ GetMeshNumbers()

void TGeoXtru::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 TGeoBBox.

Definition at line 1233 of file TGeoXtru.cxx.

◆ GetNmeshVertices()

Int_t TGeoXtru::GetNmeshVertices ( ) const

virtual

Return number of vertices of the mesh representation.

Reimplemented from TGeoBBox.

Definition at line 1245 of file TGeoXtru.cxx.

◆ GetNvert()

Int_t TGeoXtru::GetNvert ( ) const

inline

Definition at line 95 of file TGeoXtru.h.

◆ GetNz()

Int_t TGeoXtru::GetNz ( ) const

inline

Definition at line 94 of file TGeoXtru.h.

◆ GetPlaneNormal()

void TGeoXtru::GetPlaneNormal	(	const Double_t *	vert,
		Double_t *	norm
	)		const

protected

Returns normal vector to the planar quadrilateral defined by vector VERT.

The normal points outwards the xtru.

Definition at line 760 of file TGeoXtru.cxx.

◆ GetPlaneVertices()

void TGeoXtru::GetPlaneVertices	(	Int_t	iz,
		Int_t	ivert,
		Double_t *	vert
	)		const

protected

Returns (x,y,z) of 3 vertices of the surface defined by Z sections (iz, iz+1) and polygon vertices (ivert, ivert+1).

No range check.

Definition at line 785 of file TGeoXtru.cxx.

◆ GetScale()

Double_t TGeoXtru::GetScale ( Int_t i ) const

inline

Definition at line 100 of file TGeoXtru.h.

◆ GetThreadData()

TGeoXtru::ThreadData_t & TGeoXtru::GetThreadData ( ) const

Definition at line 125 of file TGeoXtru.cxx.

◆ GetX()

Double_t TGeoXtru::GetX ( Int_t i ) const

inline

Definition at line 96 of file TGeoXtru.h.

◆ GetXOffset()

Double_t TGeoXtru::GetXOffset ( Int_t i ) const

inline

Definition at line 98 of file TGeoXtru.h.

◆ GetY()

Double_t TGeoXtru::GetY ( Int_t i ) const

inline

Definition at line 97 of file TGeoXtru.h.

◆ GetYOffset()

Double_t TGeoXtru::GetYOffset ( Int_t i ) const

inline

Definition at line 99 of file TGeoXtru.h.

◆ GetZ() [1/2]

Double_t * TGeoXtru::GetZ ( ) const

inline

Definition at line 101 of file TGeoXtru.h.

◆ GetZ() [2/2]

Double_t TGeoXtru::GetZ ( Int_t ipl ) const

Return the Z coordinate for segment ipl.

Definition at line 748 of file TGeoXtru.cxx.

◆ InspectShape()

void TGeoXtru::InspectShape ( ) const

virtual

Print actual Xtru parameters.

Reimplemented from TGeoBBox.

Definition at line 865 of file TGeoXtru.cxx.

◆ IsPointInsidePlane()

Bool_t TGeoXtru::IsPointInsidePlane	(	const Double_t *	point,
		Double_t *	vert,
		Double_t *	norm
	)		const

protected

Check if the quadrilateral defined by VERT contains a coplanar POINT.

Definition at line 840 of file TGeoXtru.cxx.

◆ MakeBuffer3D()

TBuffer3D * TGeoXtru::MakeBuffer3D ( ) const

virtual

Creates a TBuffer3D describing this shape.

Coordinates are in local reference frame.

Reimplemented from TGeoBBox.

Definition at line 882 of file TGeoXtru.cxx.

◆ operator=()

TGeoXtru & TGeoXtru::operator= ( const TGeoXtru & )

protecteddelete

◆ Safety()

Double_t TGeoXtru::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.

‍localize the Z segment

Reimplemented from TGeoBBox.

Definition at line 1035 of file TGeoXtru.cxx.

◆ Safety_v()

void TGeoXtru::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 TGeoBBox.

Definition at line 1332 of file TGeoXtru.cxx.

◆ SafetyToSector()

Double_t TGeoXtru::SafetyToSector	(	const Double_t *	point,
		Int_t	iz,
		Double_t	safmin,
		Bool_t	in
	)

protected

Compute safety to sector iz, returning also the closest segment index.

Definition at line 969 of file TGeoXtru.cxx.

◆ SavePrimitive()

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

virtual

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

Reimplemented from TGeoBBox.

Definition at line 1080 of file TGeoXtru.cxx.

◆ SetCurrentVertices()

void TGeoXtru::SetCurrentVertices	(	Double_t	x0,
		Double_t	y0,
		Double_t	scale
	)

Set current vertex coordinates according X0, Y0 and SCALE.

Definition at line 1129 of file TGeoXtru.cxx.

◆ SetCurrentZ()

void TGeoXtru::SetCurrentZ	(	Double_t	z,
		Int_t	iz
	)

Recompute current section vertices for a given Z position within range of section iz.

Definition at line 1107 of file TGeoXtru.cxx.

◆ SetDimensions()

void TGeoXtru::SetDimensions ( Double_t * param )

virtual

param[0] = nz // number of z planes
param[1] = z1 // Z position of first plane
param[2] = x1 // X position of first plane
param[3] = y1 // Y position of first plane
param[4] = scale1 // scale factor for first plane ...
param[4*(nz-1]+1] = zn
param[4*(nz-1)+2] = xn
param[4*(nz-1)+3] = yn
param[4*(nz-1)+4] = scalen

Reimplemented from TGeoBBox.

Definition at line 1151 of file TGeoXtru.cxx.

◆ SetIz()

void TGeoXtru::SetIz ( Int_t iz )

protected

Set current z-plane.

Definition at line 176 of file TGeoXtru.cxx.

◆ SetPoints() [1/2]

void TGeoXtru::SetPoints ( Double_t * points ) const

virtual

create polycone mesh points

Reimplemented from TGeoBBox.

Definition at line 1175 of file TGeoXtru.cxx.

◆ SetPoints() [2/2]

void TGeoXtru::SetPoints ( Float_t * points ) const

virtual

create polycone mesh points

Reimplemented from TGeoBBox.

Definition at line 1204 of file TGeoXtru.cxx.

◆ SetSeg()

void TGeoXtru::SetSeg ( Int_t iseg )

protected

Set current segment.

Definition at line 183 of file TGeoXtru.cxx.

◆ SetSegsAndPols()

void TGeoXtru::SetSegsAndPols ( TBuffer3D & buff ) const

virtual

Fill TBuffer3D structure for segments and polygons.

Reimplemented from TGeoBBox.

Definition at line 904 of file TGeoXtru.cxx.

◆ Sizeof3D()

void TGeoXtru::Sizeof3D ( ) const

virtual

fill size of this 3-D object

Reimplemented from TGeoBBox.

Definition at line 1254 of file TGeoXtru.cxx.

◆ Z()

Double_t & TGeoXtru::Z ( Int_t ipl )

inline

Definition at line 108 of file TGeoXtru.h.

Member Data Documentation

◆ fMutex

std::mutex TGeoXtru::fMutex

mutableprotected

size of thread-specific array

Definition at line 54 of file TGeoXtru.h.

◆ fNvert

Int_t TGeoXtru::fNvert

protected

Definition at line 42 of file TGeoXtru.h.

◆ fNz

Int_t TGeoXtru::fNz

protected

Definition at line 43 of file TGeoXtru.h.

◆ fScale

Double_t* TGeoXtru::fScale

protected

Definition at line 48 of file TGeoXtru.h.

◆ fThreadData

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

mutableprotected

Definition at line 52 of file TGeoXtru.h.

◆ fThreadSize

Int_t TGeoXtru::fThreadSize

mutableprotected

Navigation data per thread.

Definition at line 53 of file TGeoXtru.h.

◆ fX

Double_t* TGeoXtru::fX

protected

Definition at line 45 of file TGeoXtru.h.

◆ fX0

Double_t* TGeoXtru::fX0

protected

Definition at line 49 of file TGeoXtru.h.

◆ fY

Double_t* TGeoXtru::fY

protected

Definition at line 46 of file TGeoXtru.h.

◆ fY0

Double_t* TGeoXtru::fY0

protected

Definition at line 50 of file TGeoXtru.h.

◆ fZ

Double_t* TGeoXtru::fZ

protected

Definition at line 47 of file TGeoXtru.h.

◆ fZcurrent

Double_t TGeoXtru::fZcurrent

protected

Definition at line 44 of file TGeoXtru.h.

Libraries for TGeoXtru:

[legend]

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

geom/geom/inc/TGeoXtru.h
geom/geom/src/TGeoXtru.cxx

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TGeoXtru() [1/4]

◆ TGeoXtru() [2/4]

◆ TGeoXtru() [3/4]

◆ TGeoXtru() [4/4]

◆ ~TGeoXtru()

Member Function Documentation

◆ Capacity()

◆ ClearThreadData()

◆ ComputeBBox()

◆ ComputeNormal()

◆ ComputeNormal_v()

◆ Contains()

◆ Contains_v()

◆ CreateThreadData()

◆ DefinePolygon()

◆ DefineSection()

◆ DistancetoPrimitive()

◆ DistFromInside()

◆ DistFromInside_v()

◆ DistFromOutside()

◆ DistFromOutside_v()

◆ DistToPlane()

◆ DrawPolygon()

◆ GetBuffer3D()

◆ GetMakeRuntimeShape()

◆ GetMeshNumbers()

◆ GetNmeshVertices()

◆ GetNvert()

◆ GetNz()

◆ GetPlaneNormal()

◆ GetPlaneVertices()

◆ GetScale()

◆ GetThreadData()

◆ GetX()

◆ GetXOffset()

◆ GetY()

◆ GetYOffset()

◆ GetZ() [1/2]

◆ GetZ() [2/2]

◆ InspectShape()

◆ IsPointInsidePlane()

◆ MakeBuffer3D()

◆ operator=()

◆ Safety()

◆ Safety_v()

◆ SafetyToSector()

◆ SavePrimitive()

◆ SetCurrentVertices()

◆ SetCurrentZ()

◆ SetDimensions()

◆ SetIz()

◆ SetPoints() [1/2]

◆ SetPoints() [2/2]

◆ SetSeg()

◆ SetSegsAndPols()

◆ Sizeof3D()

◆ Z()

Member Data Documentation

◆ fMutex

◆ fNvert

◆ fNz

◆ fScale

◆ fThreadData

◆ fThreadSize

◆ fX

◆ fX0

◆ fY

◆ fY0

◆ fZ

◆ fZcurrent