An arbitrary trapezoid with less than 8 vertices standing on two parallel planes perpendicular to Z axis.

Parameters :

dz - half length in Z;
xy[8][2] - vector of (x,y) coordinates of vertices
- first four points (xy[i][j], i<4, j<2) are the (x,y) coordinates of the vertices sitting on the -dz plane;
- last four points (xy[i][j], i>=4, j<2) are the (x,y) coordinates of the vertices sitting on the +dz plane;

The order of defining the vertices of an arb8 is the following :

point 0 is connected with points 1,3,4
point 1 is connected with points 0,2,5
point 2 is connected with points 1,3,6
point 3 is connected with points 0,2,7
point 4 is connected with points 0,5,7
point 5 is connected with points 1,4,6
point 6 is connected with points 2,5,7
point 7 is connected with points 3,4,6

Points can be identical in order to create shapes with less than 8 vertices.

{
   TCanvas *c = new TCanvas("c", "c",0,0,600,600);
   new TGeoManager("arb8", "poza12");
   TGeoMaterial *mat = new TGeoMaterial("Al", 26.98,13,2.7);
   TGeoMedium *med = new TGeoMedium("MED",1,mat);
   TGeoVolume *top = gGeoManager->MakeBox("TOP",med,100,100,100);
   gGeoManager->SetTopVolume(top);
   TGeoArb8 *arb = new TGeoArb8(20);
   arb->SetVertex(0,-30,-25);
   arb->SetVertex(1,-25,25);
   arb->SetVertex(2,5,25);
   arb->SetVertex(3,25,-25);
   arb->SetVertex(4,-28,-23);
   arb->SetVertex(5,-23,27);
   arb->SetVertex(6,-23,27);
   arb->SetVertex(7,13,-27);
   TGeoVolume *vol = new TGeoVolume("ARB8",arb,med);
   vol->SetLineWidth(2);
   top->AddNode(vol,1);
   gGeoManager->CloseGeometry();
   gGeoManager->SetNsegments(80);
   top->Draw();
   TView *view = gPad->GetView();
   view->ShowAxis();
}

Definition at line 17 of file TGeoArb8.h.

Public Member Functions
	TGeoArb8 ()
	Default constructor. More...

	TGeoArb8 (Double_t dz, Double_t *vertices=0)
	Constructor. More...

	TGeoArb8 (const char name, Double_t dz, Double_t vertices=0)
	Named constructor. More...

virtual	~TGeoArb8 ()
	Destructor. More...

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

virtual void	ComputeBBox ()
	Computes bounding box for an Arb8 shape. More...

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

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. More...

void	ComputeTwist ()
	Computes tangents of twist angles (angles between projections on XY plane of corresponding -dz +dz edges). More...

virtual Bool_t	Contains (const Double_t *point) const
	Test if point is inside this shape. More...

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. More...

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 shape. More...

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. More...

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
	Computes distance from outside point to surface of the shape. More...

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. More...

Double_t	DistToPlane (const Double_t point, const Double_t dir, Int_t ipl, Bool_t in) const
	Computes distance to plane ipl : More...

virtual TGeoVolume *	Divide (TGeoVolume voldiv, const char divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)
	Divide this shape along one axis. More...

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

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

virtual Int_t	GetByteCount () const

Double_t	GetClosestEdge (const Double_t point, Double_t vert, Int_t &isegment) const
	Get index of the edge of the quadrilater represented by vert closest to point. More...

Double_t	GetDz () const

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 arb8. Returns 0 if successful. More...

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

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

Double_t	GetTwist (Int_t iseg) const
	Get twist for segment I in range [0,3]. More...

Double_t *	GetVertices ()

virtual void	InspectShape () const
	Prints shape parameters. More...

virtual Bool_t	IsCylType () const

Bool_t	IsTwisted () const

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

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. More...

Double_t	SafetyToFace (const Double_t *point, Int_t iseg, Bool_t in) const
	Estimate safety to lateral plane defined by segment iseg in range [0,3] Might be negative: plane seen only from inside. More...

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

virtual void	SetDimensions (Double_t *param)
	Set all arb8 params in one step. More...

void	SetDz (Double_t dz)

void	SetPlaneVertices (Double_t zpl, Double_t *vertices) const
	Computes intersection points between plane at zpl and non-horizontal edges. More...

virtual void	SetPoints (Double_t *points) const
	Creates arb8 mesh points. More...

virtual void	SetPoints (Float_t *points) const
	Creates arb8 mesh points. More...

virtual void	SetVertex (Int_t vnum, Double_t x, Double_t y)
	Set values for a given vertex. More...

virtual void	Sizeof3D () const
	Fill size of this 3-D object. More...

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

	TGeoBBox (Double_t dx, Double_t dy, Double_t dz, Double_t *origin=0)
	Constructor where half-lengths are provided. More...

	TGeoBBox (const char name, Double_t dx, Double_t dy, Double_t dz, Double_t origin=0)
	Constructor with shape name. More...

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

virtual	~TGeoBBox ()
	Destructor. More...

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. More...

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Compute closest distance from point px,py to each corner. More...

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

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

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. More...

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

virtual Int_t	GetNmeshVertices () const

virtual const Double_t *	GetOrigin () const

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. More...

virtual Bool_t	IsNullBox () const

virtual Bool_t	IsValidBox () const

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

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

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

virtual void	SetSegsAndPols (TBuffer3D &buffer) const
	Fills TBuffer3D structure for segments and polygons. More...

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

	TGeoShape (const char *name)
	Default constructor. More...

virtual	~TGeoShape ()
	Destructor. More...

virtual void	AfterStreamer ()

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

virtual void	ClearThreadData () const

virtual void	CreateThreadData (Int_t)

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

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

Int_t	GetId () const

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

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

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. More...

void	ResetShapeBit (UInt_t f)

void	SetId (Int_t id)

void	SetRuntime (Bool_t flag=kTRUE)

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

void	SetShapeBit (UInt_t f)

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

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 TString &name, const TString &title)

	TNamed (const TNamed &named)
	TNamed copy ctor. More...

virtual	~TNamed ()
	TNamed destructor. More...

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

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

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

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

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

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

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

virtual Bool_t	IsSortable () const

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

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

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

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

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

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

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

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

	TObject (const TObject &object)
	TObject copy ctor. More...

virtual	~TObject ()
	TObject destructor. More...

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

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad. More...

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

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

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

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

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

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

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

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

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. More...

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray. More...

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

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...

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

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object. More...

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

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

virtual Option_t *	GetOption () const

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

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

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. More...

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

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

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

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

void	InvertBit (UInt_t f)

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

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

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). More...

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification. More...

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

void	operator delete (void *ptr)
	Operator delete. More...

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

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. More...

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

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

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

void	ResetBit (UInt_t f)

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

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

void	SetBit (UInt_t f)

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

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

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

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. More...

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

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

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

Static Public Member Functions
static void	GetPlaneNormal (Double_t p1, Double_t p2, Double_t p3, Double_t norm)
	Computes normal to plane defined by P1, P2 and P3. More...

static Bool_t	InsidePolygon (Double_t x, Double_t y, Double_t *pts)
	Finds if a point in XY plane is inside the polygon defines by PTS. More...

static Bool_t	IsSamePoint (const Double_t p1, const Double_t p2)

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. More...

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. More...

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. More...

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. More...

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. More...

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. More...

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

static TGeoMatrix *	GetTransform ()
	Returns current transformation matrix that applies to shape. More...

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. More...

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. More...

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]. More...

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

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) More...

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. More...

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. More...

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) More...

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

static Double_t	Tolerance ()

Static Public Member Functions inherited from TObject
static Long_t	GetDtorOnly ()
	Return destructor only flag. More...

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

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

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

Protected Types
enum	EGeoArb8Type { kArb8Trap = BIT(27), kArb8Tra = BIT(28) }

Protected Member Functions
	TGeoArb8 (const TGeoArb8 &)
	Copy constructor. More...

TGeoArb8 &	operator= (const TGeoArb8 &)
	Assignment operator. More...

Protected Member Functions inherited from TGeoBBox
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. More...

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

void	SetOnBoundary (Bool_t)

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

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). More...

void	MakeZombie ()

Protected Attributes
Double_t	fDz

Double_t *	fTwist

Double_t	fXY [8][2]
	[4] tangents of twist angles More...

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) }

#include <TGeoArb8.h>

Inheritance diagram for TGeoArb8:

[legend]

Member Enumeration Documentation

◆ EGeoArb8Type

enum TGeoArb8::EGeoArb8Type

protected

Enumerator
kArb8Trap
kArb8Tra

Definition at line 20 of file TGeoArb8.h.

Constructor & Destructor Documentation

◆ TGeoArb8() [1/4]

TGeoArb8::TGeoArb8 ( const TGeoArb8 & ga8 )

protected

Copy constructor.

Definition at line 209 of file TGeoArb8.cxx.

◆ TGeoArb8() [2/4]

TGeoArb8::TGeoArb8 ( )

Default constructor.

Definition at line 145 of file TGeoArb8.cxx.

◆ TGeoArb8() [3/4]

TGeoArb8::TGeoArb8	(	Double_t	dz,
		Double_t *	vertices = `0`
	)

Constructor.

If the array of vertices is not null, this should be in the format : (x0, y0, x1, y1, ... , x7, y7)

Definition at line 160 of file TGeoArb8.cxx.

◆ TGeoArb8() [4/4]

TGeoArb8::TGeoArb8	(	const char *	name,
		Double_t	dz,
		Double_t *	vertices = `0`
	)

Named constructor.

If the array of vertices is not null, this should be in the format : (x0, y0, x1, y1, ... , x7, y7)

Definition at line 185 of file TGeoArb8.cxx.

◆ ~TGeoArb8()

TGeoArb8::~TGeoArb8 ( )

virtual

Destructor.

Definition at line 240 of file TGeoArb8.cxx.

Member Function Documentation

◆ Capacity()

Double_t TGeoArb8::Capacity ( ) const

virtual

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

Reimplemented from TGeoBBox.

Definition at line 248 of file TGeoArb8.cxx.

◆ ComputeBBox()

void TGeoArb8::ComputeBBox ( )

virtual

Computes bounding box for an Arb8 shape.

Reimplemented from TGeoBBox.

Definition at line 265 of file TGeoArb8.cxx.

◆ ComputeNormal()

void TGeoArb8::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 462 of file TGeoArb8.cxx.

◆ ComputeNormal_v()

void TGeoArb8::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 1298 of file TGeoArb8.cxx.

◆ ComputeTwist()

void TGeoArb8::ComputeTwist ( )

Computes tangents of twist angles (angles between projections on XY plane of corresponding -dz +dz edges).

Computes also if the vertices are defined clockwise or anti-clockwise.

Definition at line 291 of file TGeoArb8.cxx.

◆ Contains()

Bool_t TGeoArb8::Contains ( const Double_t * point ) const

virtual

Test if point is inside this shape.

Reimplemented from TGeoBBox.

Definition at line 527 of file TGeoArb8.cxx.

◆ Contains_v()

void TGeoArb8::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 1288 of file TGeoArb8.cxx.

◆ DistFromInside()

Double_t TGeoArb8::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 shape.

Reimplemented from TGeoBBox.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 700 of file TGeoArb8.cxx.

◆ DistFromInside_v()

void TGeoArb8::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.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 1306 of file TGeoArb8.cxx.

◆ DistFromOutside()

Double_t TGeoArb8::DistFromOutside	(	const Double_t *	point,
		const Double_t *	dir,
		Int_t	iact = `1`,
		Double_t	step = `TGeoShape::Big()`,
		Double_t *	safe = `0`
	)		const

virtual

Computes distance from outside point to surface of the shape.

Reimplemented from TGeoBBox.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 672 of file TGeoArb8.cxx.

◆ DistFromOutside_v()

void TGeoArb8::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.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 1314 of file TGeoArb8.cxx.

◆ DistToPlane()

Double_t TGeoArb8::DistToPlane	(	const Double_t *	point,
		const Double_t *	dir,
		Int_t	ipl,
		Bool_t	in
	)		const

Computes distance to plane ipl :

ipl=0 : points 0,4,1,5
ipl=1 : points 1,5,2,6
ipl=2 : points 2,6,3,7
ipl=3 : points 3,7,0,4

Definition at line 551 of file TGeoArb8.cxx.

◆ Divide()

TGeoVolume * TGeoArb8::Divide	(	TGeoVolume *	voldiv,
		const char *	divname,
		Int_t	iaxis,
		Int_t	ndiv,
		Double_t	start,
		Double_t	step
	)

virtual

Divide this shape along one axis.

Reimplemented from TGeoBBox.

Reimplemented in TGeoTrap.

Definition at line 826 of file TGeoArb8.cxx.

◆ GetAxisRange()

Double_t TGeoArb8::GetAxisRange	(	Int_t	iaxis,
		Double_t &	xlo,
		Double_t &	xhi
	)		const

virtual

Get shape range on a given axis.

Reimplemented from TGeoBBox.

Definition at line 836 of file TGeoArb8.cxx.

◆ GetBoundingCylinder()

void TGeoArb8::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 TGeoBBox.

Definition at line 854 of file TGeoArb8.cxx.

◆ GetByteCount()

virtual Int_t TGeoArb8::GetByteCount ( ) const

inlinevirtual

Reimplemented from TGeoBBox.

Definition at line 60 of file TGeoArb8.h.

◆ GetClosestEdge()

Double_t TGeoArb8::GetClosestEdge	(	const Double_t *	point,
		Double_t *	vert,
		Int_t &	isegment
	)		const

Get index of the edge of the quadrilater represented by vert closest to point.

If [P1,P2] is the closest segment and P is the point, the function returns the fraction of the projection of (P1P) over (P1P2). If projection of P is not in range [P1,P2] return -1.

Definition at line 395 of file TGeoArb8.cxx.

◆ GetDz()

Double_t TGeoArb8::GetDz ( ) const

inline

Definition at line 63 of file TGeoArb8.h.

◆ GetFittingBox()

Int_t TGeoArb8::GetFittingBox	(	const TGeoBBox *	parambox,
		TGeoMatrix *	mat,
		Double_t &	dx,
		Double_t &	dy,
		Double_t &	dz
	)		const

virtual

Fills real parameters of a positioned box inside this arb8. Returns 0 if successful.

Reimplemented from TGeoBBox.

Definition at line 873 of file TGeoArb8.cxx.

◆ GetMakeRuntimeShape()

virtual TGeoShape* TGeoArb8::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.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 65 of file TGeoArb8.h.

◆ GetPlaneNormal()

void TGeoArb8::GetPlaneNormal	(	Double_t *	p1,
		Double_t *	p2,
		Double_t *	p3,
		Double_t *	norm
	)

static

Computes normal to plane defined by P1, P2 and P3.

Definition at line 930 of file TGeoArb8.cxx.

◆ GetPointsOnFacet()

Bool_t TGeoArb8::GetPointsOnFacet	(	Int_t	,
		Int_t	,
		Double_t *
	)		const

virtual

Fills array with n random points located on the surface of indexed facet.

The output array must be provided with a length of minimum 3*npoints. Returns true if operation succeeded. Possible index values:

0 - all facets together
1 to 6 - facet index from bottom to top Z

Reimplemented from TGeoBBox.

Definition at line 958 of file TGeoArb8.cxx.

◆ GetTwist()

Double_t TGeoArb8::GetTwist ( Int_t iseg ) const

Get twist for segment I in range [0,3].

Definition at line 383 of file TGeoArb8.cxx.

◆ GetVertices()

Double_t* TGeoArb8::GetVertices ( )

inline

Definition at line 67 of file TGeoArb8.h.

◆ InsidePolygon()

Bool_t TGeoArb8::InsidePolygon	(	Double_t	x,
		Double_t	y,
		Double_t *	pts
	)

static

Finds if a point in XY plane is inside the polygon defines by PTS.

Definition at line 1014 of file TGeoArb8.cxx.

◆ InspectShape()

void TGeoArb8::InspectShape ( ) const

virtual

Prints shape parameters.

Reimplemented from TGeoBBox.

Definition at line 1034 of file TGeoArb8.cxx.

◆ IsCylType()

virtual Bool_t TGeoArb8::IsCylType ( ) const

inlinevirtual

Reimplemented from TGeoBBox.

Definition at line 69 of file TGeoArb8.h.

◆ IsSamePoint()

static Bool_t TGeoArb8::IsSamePoint	(	const Double_t *	p1,
		const Double_t *	p2
	)

inlinestatic

Definition at line 70 of file TGeoArb8.h.

◆ IsTwisted()

Bool_t TGeoArb8::IsTwisted ( ) const

inline

Definition at line 73 of file TGeoArb8.h.

◆ operator=()

TGeoArb8 & TGeoArb8::operator= ( const TGeoArb8 & ga8 )

protected

Assignment operator.

Definition at line 223 of file TGeoArb8.cxx.

◆ Safety()

Double_t TGeoArb8::Safety	(	const Double_t *	point,
		Bool_t	in = `kTRUE`
	)		const

virtual

Computes the closest distance from given point to this shape.

Reimplemented from TGeoBBox.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 1049 of file TGeoArb8.cxx.

◆ Safety_v()

void TGeoArb8::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.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 1324 of file TGeoArb8.cxx.

◆ SafetyToFace()

Double_t TGeoArb8::SafetyToFace	(	const Double_t *	point,
		Int_t	iseg,
		Bool_t	in
	)		const

Estimate safety to lateral plane defined by segment iseg in range [0,3] Might be negative: plane seen only from inside.

Definition at line 1127 of file TGeoArb8.cxx.

◆ SavePrimitive()

void TGeoArb8::SavePrimitive	(	std::ostream &	out,
		Option_t *	option = `""`
	)

virtual

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

Reimplemented from TGeoBBox.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 1166 of file TGeoArb8.cxx.

◆ SetDimensions()

void TGeoArb8::SetDimensions ( Double_t * param )

virtual

Set all arb8 params in one step.

param[0] = dz param[1] = x0 param[2] = y0 ...

Reimplemented from TGeoBBox.

Reimplemented in TGeoGtra, and TGeoTrap.

Definition at line 1210 of file TGeoArb8.cxx.

◆ SetDz()

void TGeoArb8::SetDz ( Double_t dz )

inline

Definition at line 81 of file TGeoArb8.h.

◆ SetPlaneVertices()

void TGeoArb8::SetPlaneVertices	(	Double_t	zpl,
		Double_t *	vertices
	)		const

Computes intersection points between plane at zpl and non-horizontal edges.

Definition at line 1194 of file TGeoArb8.cxx.

◆ SetPoints() [1/2]

void TGeoArb8::SetPoints ( Double_t * points ) const

virtual

Creates arb8 mesh points.

Reimplemented from TGeoBBox.

Definition at line 1224 of file TGeoArb8.cxx.

◆ SetPoints() [2/2]

void TGeoArb8::SetPoints ( Float_t * points ) const

virtual

Creates arb8 mesh points.

Reimplemented from TGeoBBox.

Definition at line 1236 of file TGeoArb8.cxx.

◆ SetVertex()

void TGeoArb8::SetVertex	(	Int_t	vnum,
		Double_t	x,
		Double_t	y
	)

virtual

Set values for a given vertex.

Definition at line 1248 of file TGeoArb8.cxx.

◆ Sizeof3D()

void TGeoArb8::Sizeof3D ( ) const

virtual

Fill size of this 3-D object.

Reimplemented from TGeoBBox.

Definition at line 1265 of file TGeoArb8.cxx.

Member Data Documentation

◆ fDz

Double_t TGeoArb8::fDz

protected

Definition at line 27 of file TGeoArb8.h.

◆ fTwist

Double_t* TGeoArb8::fTwist

protected

Definition at line 28 of file TGeoArb8.h.

◆ fXY

Double_t TGeoArb8::fXY[8][2]

protected

[4] tangents of twist angles

Definition at line 29 of file TGeoArb8.h.

Libraries for TGeoArb8:

[legend]

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Member Enumeration Documentation

◆ EGeoArb8Type

Constructor & Destructor Documentation

◆ TGeoArb8() [1/4]

◆ TGeoArb8() [2/4]

◆ TGeoArb8() [3/4]

◆ TGeoArb8() [4/4]

◆ ~TGeoArb8()

Member Function Documentation

◆ Capacity()

◆ ComputeBBox()

◆ ComputeNormal()

◆ ComputeNormal_v()

◆ ComputeTwist()

◆ Contains()

◆ Contains_v()

◆ DistFromInside()

◆ DistFromInside_v()

◆ DistFromOutside()

◆ DistFromOutside_v()

◆ DistToPlane()

◆ Divide()

◆ GetAxisRange()

◆ GetBoundingCylinder()

◆ GetByteCount()

◆ GetClosestEdge()

◆ GetDz()

◆ GetFittingBox()

◆ GetMakeRuntimeShape()

◆ GetPlaneNormal()

◆ GetPointsOnFacet()

◆ GetTwist()

◆ GetVertices()

◆ InsidePolygon()

◆ InspectShape()

◆ IsCylType()

◆ IsSamePoint()

◆ IsTwisted()

◆ operator=()

◆ Safety()

◆ Safety_v()

◆ SafetyToFace()

◆ SavePrimitive()

◆ SetDimensions()

◆ SetDz()

◆ SetPlaneVertices()

◆ SetPoints() [1/2]

◆ SetPoints() [2/2]

◆ SetVertex()

◆ Sizeof3D()

Member Data Documentation

◆ fDz

◆ fTwist

◆ fXY