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Reference Guide
TGeoArb8 Class Reference

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);
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);
top->Draw();
TView *view = gPad->GetView();
view->ShowAxis();
}

Definition at line 17 of file TGeoArb8.h.

Public Member Functions

 TGeoArb8 ()
 Default constructor. More...
 
 TGeoArb8 (const char *name, Double_t dz, Double_t *vertices=0)
 Named constructor. More...
 
 TGeoArb8 (Double_t dz, Double_t *vertices=0)
 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 TGeoVolumeDivide (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 TGeoShapeGetMakeRuntimeShape (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_tGetVertices ()
 
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 (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...
 
 TGeoBBox (Double_t dx, Double_t dy, Double_t dz, Double_t *origin=0)
 Constructor where half-lengths are provided. 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 TBuffer3DGetBuffer3D (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_tGetOrigin () 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 TBuffer3DMakeBuffer3D () 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)
 
void SetShapeBit (UInt_t f, Bool_t set)
 Equivalent of TObject::SetBit. More...
 
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 TNamed &named)
 TNamed copy ctor. More...
 
 TNamed (const TString &name, const TString &title)
 
virtual ~TNamed ()
 TNamed destructor. More...
 
virtual void Clear (Option_t *option="")
 Set name and title to empty strings (""). More...
 
virtual TObjectClone (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...
 
TNamedoperator= (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 ()
 Check and record whether 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 TObjectDrawClone (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 TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () 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_tGetOption () 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...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (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)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
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 TGeoMatrixGetTransform ()
 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...
 
void CopyTwist (Double_t *twist=nullptr)
 Copy twist values from source array. More...
 
TGeoArb8operator= (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 {0}
 
Double_tfTwist {nullptr}
 
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 206 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 159 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 183 of file TGeoArb8.cxx.

◆ ~TGeoArb8()

TGeoArb8::~TGeoArb8 ( )
virtual

Destructor.

Definition at line 237 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 259 of file TGeoArb8.cxx.

◆ ComputeBBox()

void TGeoArb8::ComputeBBox ( )
virtual

Computes bounding box for an Arb8 shape.

Reimplemented from TGeoBBox.

Definition at line 276 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 469 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 1305 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 302 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 534 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 1295 of file TGeoArb8.cxx.

◆ CopyTwist()

void TGeoArb8::CopyTwist ( Double_t twist = nullptr)
protected

Copy twist values from source array.

Definition at line 245 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 707 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 1313 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 679 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 1321 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 558 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 833 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 843 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 861 of file TGeoArb8.cxx.

◆ GetByteCount()

virtual Int_t TGeoArb8::GetByteCount ( ) const
inlinevirtual

Reimplemented from TGeoBBox.

Definition at line 62 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 402 of file TGeoArb8.cxx.

◆ GetDz()

Double_t TGeoArb8::GetDz ( ) const
inline

Definition at line 65 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 880 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 67 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 937 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 965 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 392 of file TGeoArb8.cxx.

◆ GetVertices()

Double_t* TGeoArb8::GetVertices ( )
inline

Definition at line 69 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 1021 of file TGeoArb8.cxx.

◆ InspectShape()

void TGeoArb8::InspectShape ( ) const
virtual

Prints shape parameters.

Reimplemented from TGeoBBox.

Definition at line 1041 of file TGeoArb8.cxx.

◆ IsCylType()

virtual Bool_t TGeoArb8::IsCylType ( ) const
inlinevirtual

Reimplemented from TGeoBBox.

Definition at line 71 of file TGeoArb8.h.

◆ IsSamePoint()

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

Definition at line 72 of file TGeoArb8.h.

◆ IsTwisted()

Bool_t TGeoArb8::IsTwisted ( ) const
inline

Definition at line 75 of file TGeoArb8.h.

◆ operator=()

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

Assignment operator.

Definition at line 220 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 1056 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 1331 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 1134 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 1173 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 1217 of file TGeoArb8.cxx.

◆ SetDz()

void TGeoArb8::SetDz ( Double_t  dz)
inline

Definition at line 83 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 1201 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 1231 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 1243 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 1255 of file TGeoArb8.cxx.

◆ Sizeof3D()

void TGeoArb8::Sizeof3D ( ) const
virtual

Fill size of this 3-D object.

Reimplemented from TGeoBBox.

Definition at line 1272 of file TGeoArb8.cxx.

Member Data Documentation

◆ fDz

Double_t TGeoArb8::fDz {0}
protected

Definition at line 27 of file TGeoArb8.h.

◆ fTwist

Double_t* TGeoArb8::fTwist {nullptr}
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]

The documentation for this class was generated from the following files:
c
#define c(i)
Definition: RSha256.hxx:101
TGeoManager::MakeBox
TGeoVolume * MakeBox(const char *name, TGeoMedium *medium, Double_t dx, Double_t dy, Double_t dz)
Make in one step a volume pointing to a box shape with given medium.
Definition: TGeoManager.cxx:2918
gGeoManager
R__EXTERN TGeoManager * gGeoManager
Definition: TGeoManager.h:602
TGeoManager::CloseGeometry
void CloseGeometry(Option_t *option="d")
Closing geometry implies checking the geometry validity, fixing shapes with negative parameters (run-...
Definition: TGeoManager.cxx:1359
TGeoArb8
An arbitrary trapezoid with less than 8 vertices standing on two parallel planes perpendicular to Z a...
Definition: TGeoArb8.h:18
TGeoVolume::SetLineWidth
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition: TGeoVolume.cxx:2052
TGeoVolume::AddNode
virtual void AddNode(TGeoVolume *vol, Int_t copy_no, TGeoMatrix *mat=0, Option_t *option="")
Add a TGeoNode to the list of nodes.
Definition: TGeoVolume.cxx:932
TGeoMaterial
Base class describing materials.
Definition: TGeoMaterial.h:36
TGeoManager::SetNsegments
void SetNsegments(Int_t nseg)
Set number of segments for approximating circles in drawing.
Definition: TGeoManager.cxx:3339
TGeoManager::SetTopVolume
void SetTopVolume(TGeoVolume *vol)
Set the top volume and corresponding node as starting point of the geometry.
Definition: TGeoManager.cxx:3397
TView
See TView3D.
Definition: TView.h:25
TGeoVolume::Draw
virtual void Draw(Option_t *option="")
draw top volume according to option
Definition: TGeoVolume.cxx:1146
TView::ShowAxis
virtual void ShowAxis()=0
TGeoArb8::SetVertex
virtual void SetVertex(Int_t vnum, Double_t x, Double_t y)
Set values for a given vertex.
Definition: TGeoArb8.cxx:1255
TCanvas
The Canvas class.
Definition: TCanvas.h:23
TGeoArb8::TGeoArb8
TGeoArb8()
Default constructor.
Definition: TGeoArb8.cxx:145
gPad
#define gPad
Definition: TVirtualPad.h:287
TGeoMedium
Media are used to store properties related to tracking and which are useful only when using geometry ...
Definition: TGeoMedium.h:24
TGeoManager
The manager class for any TGeo geometry.
Definition: TGeoManager.h:45
TGeoVolume
TGeoVolume, TGeoVolumeMulti, TGeoVolumeAssembly are the volume classes.
Definition: TGeoVolume.h:49