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TGeoXtru Class Reference

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()
dummy ctor
Definition TGeoXtru.cxx:188
• 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:

Double_t *yv);
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:759
• 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.

Double_t y0, Double_t scale);
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:793
• 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.

## Public Member Functions

TGeoXtru ()
dummy ctor

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

TGeoXtru (Int_t nz)
Default constructor.

~TGeoXtru () override
destructor

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

void ComputeBBox () override
compute bounding box of the pcon

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

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.

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.

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 polycone locate Z segment

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

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.

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

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

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

Int_t GetNvert () const

Int_t GetNz () const

Double_t GetScale (Int_t i) 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_tGetZ () const

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

void InspectShape () const override
Print actual Xtru 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.

void SavePrimitive (std::ostream &out, Option_t *option="") override
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.

void SetDimensions (Double_t *param) override

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

void SetPoints (Float_t *points) const override
create polycone 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 TObject.

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.

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

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.

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

Int_t GetByteCount () const override

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.

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.

Bool_t IsCylType () const override

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)

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 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)
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)

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 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 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

TGeoXtru (const TGeoXtru &)=delete

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.

TGeoXtruoperator= (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

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

Int_t fNvert

Int_t fNz

Double_tfScale

Double_tfX

Double_tfX0

Double_tfY

Double_tfY0

Double_tfZ

Double_t fZcurrent Protected Attributes inherited from TGeoBBox
Double_t fDX

Double_t fDY

Double_t fDZ

Double_t fOrigin 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 <TGeoXtru.h>

Inheritance diagram for TGeoXtru:
[legend]

## ◆ TGeoXtru() [1/4]

 TGeoXtru::TGeoXtru ( const TGeoXtru & )
protecteddelete

## ◆ TGeoXtru() [2/4]

 TGeoXtru::TGeoXtru ( )

dummy ctor

Definition at line 188 of file TGeoXtru.cxx.

## ◆ TGeoXtru() [3/4]

 TGeoXtru::TGeoXtru ( Int_t nz )

Default constructor.

Definition at line 208 of file TGeoXtru.cxx.

## ◆ TGeoXtru() [4/4]

 TGeoXtru::TGeoXtru ( Double_t * param )

Default constructor in GEANT3 style.

• param = nz // number of z planes
• param = z1 // Z position of first plane
• param = x1 // X position of first plane
• param = y1 // Y position of first plane
• param = 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 244 of file TGeoXtru.cxx.

## ◆ ~TGeoXtru()

 TGeoXtru::~TGeoXtru ( )
override

destructor

Definition at line 265 of file TGeoXtru.cxx.

## ◆ Capacity()

 Double_t TGeoXtru::Capacity ( ) const
overridevirtual

Compute capacity [length^3] of this shape.

Reimplemented from TGeoBBox.

Definition at line 297 of file TGeoXtru.cxx.

## ◆ Class()

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

## ◆ Class_Name()

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

## ◆ Class_Version()

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

Definition at line 121 of file TGeoXtru.h.

overridevirtual

Reimplemented from TGeoShape.

Definition at line 132 of file TGeoXtru.cxx.

## ◆ ComputeBBox()

 void TGeoXtru::ComputeBBox ( )
overridevirtual

compute bounding box of the pcon

Reimplemented from TGeoBBox.

Definition at line 320 of file TGeoXtru.cxx.

## ◆ ComputeNormal()

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

Compute normal to closest surface from POINT.

Reimplemented from TGeoBBox.

Definition at line 358 of file TGeoXtru.cxx.

## ◆ ComputeNormal_v()

 void TGeoXtru::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 TGeoBBox.

Definition at line 1389 of file TGeoXtru.cxx.

## ◆ Contains()

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

test if point is inside this shape

Reimplemented from TGeoBBox.

Definition at line 380 of file TGeoXtru.cxx.

## ◆ Contains_v()

 void TGeoXtru::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 TGeoBBox.

Definition at line 1378 of file TGeoXtru.cxx.

overridevirtual

Reimplemented from TGeoShape.

Definition at line 147 of file TGeoXtru.cxx.

## ◆ DeclFileName()

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

Definition at line 121 of file TGeoXtru.h.

## ◆ 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 759 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 793 of file TGeoXtru.cxx.

## ◆ DistancetoPrimitive()

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

compute closest distance from point px,py to each corner

Reimplemented from TGeoBBox.

Definition at line 416 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 = nullptr ) const
overridevirtual

compute distance from inside point to surface of the polycone locate Z segment

Reimplemented from TGeoBBox.

Definition at line 501 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
overridevirtual

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

Reimplemented from TGeoBBox.

Definition at line 1398 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 = nullptr ) const
overridevirtual

compute distance from outside point to surface of the tube Warning("DistFromOutside", "not implemented");

Reimplemented from TGeoBBox.

Definition at line 626 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
overridevirtual

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

Reimplemented from TGeoBBox.

Definition at line 1408 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 435 of file TGeoXtru.cxx.

## ◆ DrawPolygon()

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

Draw the section polygon.

Definition at line 425 of file TGeoXtru.cxx.

## ◆ GetBuffer3D()

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

Fills a static 3D buffer and returns a reference.

Reimplemented from TGeoBBox.

Definition at line 1343 of file TGeoXtru.cxx.

## ◆ GetMakeRuntimeShape()

 TGeoShape * TGeoXtru::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 TGeoBBox.

Definition at line 104 of file TGeoXtru.h.

## ◆ GetMeshNumbers()

 void TGeoXtru::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 TGeoBBox.

Definition at line 1317 of file TGeoXtru.cxx.

## ◆ GetNmeshVertices()

 Int_t TGeoXtru::GetNmeshVertices ( ) const
overridevirtual

Return number of vertices of the mesh representation.

Reimplemented from TGeoBBox.

Definition at line 1329 of file TGeoXtru.cxx.

## ◆ GetNvert()

 Int_t TGeoXtru::GetNvert ( ) const
inline

Definition at line 96 of file TGeoXtru.h.

## ◆ GetNz()

 Int_t TGeoXtru::GetNz ( ) const
inline

Definition at line 95 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 832 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 859 of file TGeoXtru.cxx.

## ◆ GetScale()

 Double_t TGeoXtru::GetScale ( Int_t i ) const
inline

Definition at line 101 of file TGeoXtru.h.

Definition at line 122 of file TGeoXtru.cxx.

## ◆ GetX()

 Double_t TGeoXtru::GetX ( Int_t i ) const
inline

Definition at line 97 of file TGeoXtru.h.

## ◆ GetXOffset()

 Double_t TGeoXtru::GetXOffset ( Int_t i ) const
inline

Definition at line 99 of file TGeoXtru.h.

## ◆ GetY()

 Double_t TGeoXtru::GetY ( Int_t i ) const
inline

Definition at line 98 of file TGeoXtru.h.

## ◆ GetYOffset()

 Double_t TGeoXtru::GetYOffset ( Int_t i ) const
inline

Definition at line 100 of file TGeoXtru.h.

## ◆ GetZ() [1/2]

 Double_t * TGeoXtru::GetZ ( ) const
inline

Definition at line 102 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 820 of file TGeoXtru.cxx.

## ◆ InspectShape()

 void TGeoXtru::InspectShape ( ) const
overridevirtual

Print actual Xtru parameters.

Reimplemented from TGeoBBox.

Definition at line 939 of file TGeoXtru.cxx.

## ◆ IsA()

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

Reimplemented from TGeoBBox.

Definition at line 121 of file TGeoXtru.h.

## ◆ 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 914 of file TGeoXtru.cxx.

## ◆ MakeBuffer3D()

 TBuffer3D * TGeoXtru::MakeBuffer3D ( ) const
overridevirtual

Creates a TBuffer3D describing this shape.

Coordinates are in local reference frame.

Reimplemented from TGeoBBox.

Definition at line 957 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
overridevirtual

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 1118 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
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 TGeoBBox.

Definition at line 1420 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 1043 of file TGeoXtru.cxx.

## ◆ SavePrimitive()

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

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

Reimplemented from TGeoBBox.

Definition at line 1167 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 1209 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 1187 of file TGeoXtru.cxx.

## ◆ SetDimensions()

 void TGeoXtru::SetDimensions ( Double_t * param )
overridevirtual
• param = nz // number of z planes
• param = z1 // Z position of first plane
• param = x1 // X position of first plane
• param = y1 // Y position of first plane
• param = 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 1231 of file TGeoXtru.cxx.

## ◆ SetIz()

 void TGeoXtru::SetIz ( Int_t iz )
protected

Set current z-plane.

Definition at line 173 of file TGeoXtru.cxx.

## ◆ SetPoints() [1/2]

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

create polycone mesh points

Reimplemented from TGeoBBox.

Definition at line 1259 of file TGeoXtru.cxx.

## ◆ SetPoints() [2/2]

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

create polycone mesh points

Reimplemented from TGeoBBox.

Definition at line 1288 of file TGeoXtru.cxx.

## ◆ SetSeg()

 void TGeoXtru::SetSeg ( Int_t iseg )
protected

Set current segment.

Definition at line 180 of file TGeoXtru.cxx.

## ◆ SetSegsAndPols()

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

Fill TBuffer3D structure for segments and polygons.

Reimplemented from TGeoBBox.

Definition at line 978 of file TGeoXtru.cxx.

## ◆ Sizeof3D()

 void TGeoXtru::Sizeof3D ( ) const
overridevirtual

fill size of this 3-D object

Reimplemented from TGeoBBox.

Definition at line 1338 of file TGeoXtru.cxx.

## ◆ Streamer()

 void TGeoXtru::Streamer ( TBuffer & R__b )
overridevirtual

Stream an object of class TObject.

Reimplemented from TGeoBBox.

## ◆ StreamerNVirtual()

 void TGeoXtru::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )
inline

Definition at line 121 of file TGeoXtru.h.

## ◆ Z()

 Double_t & TGeoXtru::Z ( Int_t ipl )
inline

Definition at line 109 of file TGeoXtru.h.

## ◆ fMutex

 std::mutex TGeoXtru::fMutex
mutableprotected

Definition at line 52 of file TGeoXtru.h.

## ◆ fNvert

 Int_t TGeoXtru::fNvert
protected

Definition at line 40 of file TGeoXtru.h.

## ◆ fNz

 Int_t TGeoXtru::fNz
protected

Definition at line 41 of file TGeoXtru.h.

## ◆ fScale

 Double_t* TGeoXtru::fScale
protected

Definition at line 46 of file TGeoXtru.h.

mutableprotected

Definition at line 50 of file TGeoXtru.h.

mutableprotected

Definition at line 51 of file TGeoXtru.h.

## ◆ fX

 Double_t* TGeoXtru::fX
protected

Definition at line 43 of file TGeoXtru.h.

## ◆ fX0

 Double_t* TGeoXtru::fX0
protected

Definition at line 47 of file TGeoXtru.h.

## ◆ fY

 Double_t* TGeoXtru::fY
protected

Definition at line 44 of file TGeoXtru.h.

## ◆ fY0

 Double_t* TGeoXtru::fY0
protected

Definition at line 48 of file TGeoXtru.h.

## ◆ fZ

 Double_t* TGeoXtru::fZ
protected

Definition at line 45 of file TGeoXtru.h.

## ◆ fZcurrent

 Double_t TGeoXtru::fZcurrent
protected

Definition at line 42 of file TGeoXtru.h.

Libraries for TGeoXtru: [legend]

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