class TGeoArb8: public TGeoBBox

 TGeoArb8 - a arbitrary trapezoid with less than 8 vertices standing on
   two paralel 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.

Function Members (Methods)

public:
TGeoArb8()
TGeoArb8(Double_t dz, Double_t* vertices = 0)
TGeoArb8(const char* name, Double_t dz, Double_t* vertices = 0)
virtual~TGeoArb8()
voidTObject::AbstractMethod(const char* method) const
virtual voidTObject::AppendPad(Option_t* option = "")
static Bool_tTGeoBBox::AreOverlapping(const TGeoBBox* box1, const TGeoMatrix* mat1, const TGeoBBox* box2, const TGeoMatrix* mat2)
static Double_tTGeoShape::Big()
virtual voidTObject::Browse(TBrowser* b)
virtual Double_tCapacity() const
static TClass*Class()
virtual const char*TObject::ClassName() const
virtual voidTNamed::Clear(Option_t* option = "")
virtual TObject*TNamed::Clone(const char* newname = "") const
virtual Int_tTNamed::Compare(const TObject* obj) const
virtual voidComputeBBox()
virtual voidComputeNormal(Double_t* point, Double_t* dir, Double_t* norm)
voidComputeTwist()
virtual Bool_tContains(Double_t* point) const
virtual voidTNamed::Copy(TObject& named) const
virtual Bool_tTGeoBBox::CouldBeCrossed(Double_t* point, Double_t* dir) const
virtual voidTObject::Delete(Option_t* option = "")
virtual Int_tTGeoBBox::DistancetoPrimitive(Int_t px, Int_t py)
virtual Double_tDistFromInside(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = TGeoShape::Big(), Double_t* safe = 0) const
virtual Double_tDistFromOutside(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = TGeoShape::Big(), Double_t* safe = 0) const
static Double_tTGeoShape::DistToPhiMin(Double_t* point, 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)
Double_tDistToPlane(Double_t* point, Double_t* dir, Int_t ipl, Bool_t in) const
virtual TGeoVolume*Divide(TGeoVolume* voldiv, const char* divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)
virtual voidTGeoShape::Draw(Option_t* option = "")
virtual voidTObject::DrawClass() const
virtual TObject*TObject::DrawClone(Option_t* option = "") const
virtual voidTObject::Dump() const
virtual voidTObject::Error(const char* method, const char* msgfmt) const
virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual voidTGeoShape::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual voidTObject::Fatal(const char* method, const char* msgfmt) const
virtual voidTNamed::FillBuffer(char*& buffer)
virtual TObject*TObject::FindObject(const char* name) const
virtual TObject*TObject::FindObject(const TObject* obj) const
virtual const char*TGeoBBox::GetAxisName(Int_t iaxis) const
virtual Double_tGetAxisRange(Int_t iaxis, Double_t& xlo, Double_t& xhi) const
virtual voidGetBoundingCylinder(Double_t* param) const
virtual const TBuffer3D&TGeoBBox::GetBuffer3D(Int_t reqSections, Bool_t localFrame) const
virtual Int_tGetByteCount() const
virtual Option_t*TObject::GetDrawOption() const
static Long_tTObject::GetDtorOnly()
virtual Double_tTGeoBBox::GetDX() const
virtual Double_tTGeoBBox::GetDY() const
Double_tGetDz() const
virtual Double_tTGeoBBox::GetDZ() const
virtual Int_tGetFittingBox(const TGeoBBox* parambox, TGeoMatrix* mat, Double_t& dx, Double_t& dy, Double_t& dz) const
virtual const char*TObject::GetIconName() const
Int_tTGeoShape::GetId() const
virtual TGeoShape*GetMakeRuntimeShape(TGeoShape*, TGeoMatrix*) const
virtual voidTGeoBBox::GetMeshNumbers(Int_t& nvert, Int_t& nsegs, Int_t& npols) const
virtual const char*TGeoShape::GetName() const
virtual Int_tTGeoBBox::GetNmeshVertices() const
virtual char*TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_tTObject::GetObjectStat()
virtual Option_t*TObject::GetOption() const
virtual const Double_t*TGeoBBox::GetOrigin() const
static voidGetPlaneNormal(Double_t* p1, Double_t* p2, Double_t* p3, Double_t* norm)
char*TGeoShape::GetPointerName() const
virtual const char*TNamed::GetTitle() const
static TGeoMatrix*TGeoShape::GetTransform()
Double_tGetTwist(Int_t iseg) const
virtual UInt_tTObject::GetUniqueID() const
Double_t*GetVertices()
virtual Bool_tTObject::HandleTimer(TTimer* timer)
virtual ULong_tTNamed::Hash() const
virtual voidTObject::Info(const char* method, const char* msgfmt) const
virtual Bool_tTObject::InheritsFrom(const char* classname) const
virtual Bool_tTObject::InheritsFrom(const TClass* cl) const
static Bool_tInsidePolygon(Double_t x, Double_t y, Double_t* pts)
virtual voidTObject::Inspect() const
virtual voidInspectShape() const
voidTObject::InvertBit(UInt_t f)
voidTGeoShape::InvertShapeBit(UInt_t f)
virtual TClass*IsA() const
static Bool_tTGeoShape::IsCloseToPhi(Double_t epsil, Double_t* point, Double_t c1, Double_t s1, Double_t c2, Double_t s2)
virtual Bool_tTGeoShape::IsComposite() const
static Bool_tTGeoShape::IsCrossingSemiplane(Double_t* point, Double_t* dir, Double_t cphi, Double_t sphi, Double_t& snext, Double_t& rxy)
virtual Bool_tIsCylType() const
virtual Bool_tTObject::IsEqual(const TObject* obj) const
virtual Bool_tTObject::IsFolder() const
static Bool_tTGeoShape::IsInPhiRange(Double_t* point, Double_t phi1, Double_t phi2)
virtual Bool_tTGeoBBox::IsNullBox() const
Bool_tTObject::IsOnHeap() const
virtual Bool_tTGeoShape::IsReflected() const
Bool_tTGeoShape::IsRunTimeShape() const
static Bool_tIsSamePoint(Double_t* p1, Double_t* p2)
virtual Bool_tTNamed::IsSortable() const
Bool_tIsTwisted() const
Bool_tTGeoShape::IsValid() const
virtual Bool_tTGeoBBox::IsValidBox() const
Bool_tTObject::IsZombie() const
virtual voidTNamed::ls(Option_t* option = "") const
virtual TBuffer3D*TGeoBBox::MakeBuffer3D() const
voidTObject::MayNotUse(const char* method) const
static voidTGeoShape::NormalPhi(Double_t* point, Double_t* dir, Double_t* norm, Double_t c1, Double_t s1, Double_t c2, Double_t s2)
virtual Bool_tTObject::Notify()
static voidTObject::operator delete(void* ptr)
static voidTObject::operator delete(void* ptr, void* vp)
static voidTObject::operator delete[](void* ptr)
static voidTObject::operator delete[](void* ptr, void* vp)
void*TObject::operator new(size_t sz)
void*TObject::operator new(size_t sz, void* vp)
void*TObject::operator new[](size_t sz)
void*TObject::operator new[](size_t sz, void* vp)
virtual voidTGeoShape::Paint(Option_t* option = "")
virtual voidTObject::Pop()
virtual voidTNamed::Print(Option_t* option = "") const
virtual Int_tTObject::Read(const char* name)
virtual voidTObject::RecursiveRemove(TObject* obj)
voidTObject::ResetBit(UInt_t f)
voidTGeoShape::ResetShapeBit(UInt_t f)
virtual Double_tSafety(Double_t* point, Bool_t in = kTRUE) const
static Double_tTGeoShape::SafetyPhi(Double_t* point, Bool_t in, Double_t phi1, Double_t phi2)
Double_tSafetyToFace(Double_t* point, Int_t iseg, Bool_t in) const
virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") const
virtual voidSavePrimitive(ostream& out, Option_t* option = "")
voidTObject::SetBit(UInt_t f)
voidTObject::SetBit(UInt_t f, Bool_t set)
voidTGeoBBox::SetBoxDimensions(Double_t dx, Double_t dy, Double_t dz, Double_t* origin = 0)
voidTGeoBBox::SetBoxPoints(Double_t* points) const
virtual voidSetDimensions(Double_t* param)
virtual voidTObject::SetDrawOption(Option_t* option = "")
static voidTObject::SetDtorOnly(void* obj)
voidSetDz(Double_t dz)
voidTGeoShape::SetId(Int_t id)
virtual voidTNamed::SetName(const char* name)
virtual voidTNamed::SetNameTitle(const char* name, const char* title)
static voidTObject::SetObjectStat(Bool_t stat)
voidSetPlaneVertices(Double_t zpl, Double_t* vertices) const
virtual voidSetPoints(Double_t* points) const
virtual voidSetPoints(Float_t* points) const
voidTGeoShape::SetRuntime(Bool_t flag = kTRUE)
virtual voidTGeoBBox::SetSegsAndPols(TBuffer3D& buffer) const
voidTGeoShape::SetShapeBit(UInt_t f)
voidTGeoShape::SetShapeBit(UInt_t f, Bool_t set)
virtual voidTNamed::SetTitle(const char* title = "")
static voidTGeoShape::SetTransform(TGeoMatrix* matrix)
virtual voidTObject::SetUniqueID(UInt_t uid)
virtual voidSetVertex(Int_t vnum, Double_t x, Double_t y)
Int_tTGeoShape::ShapeDistancetoPrimitive(Int_t numpoints, Int_t px, Int_t py) const
virtual voidShowMembers(TMemberInspector& insp, char* parent)
virtual Int_tTNamed::Sizeof() const
virtual voidSizeof3D() const
virtual voidStreamer(TBuffer& b)
voidStreamerNVirtual(TBuffer& b)
virtual voidTObject::SysError(const char* method, const char* msgfmt) const
Bool_tTObject::TestBit(UInt_t f) const
Int_tTObject::TestBits(UInt_t f) const
Bool_tTGeoShape::TestShapeBit(UInt_t f) const
Int_tTGeoShape::TestShapeBits(UInt_t f) const
static Double_tTGeoShape::Tolerance()
virtual voidTObject::UseCurrentStyle()
virtual voidTObject::Warning(const char* method, const char* msgfmt) const
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
protected:
TGeoArb8(const TGeoArb8&)
virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const
virtual voidTGeoBBox::FillBuffer3D(TBuffer3D& buffer, Int_t reqSections, Bool_t localFrame) const
Int_tTGeoShape::GetBasicColor() const
voidTObject::MakeZombie()
TGeoArb8&operator=(const TGeoArb8&)
voidTGeoShape::SetOnBoundary(Bool_t)
voidTGeoShape::TransformPoints(Double_t* points, UInt_t NbPoints) const

Data Members

public:
enum EGeoArb8Type { kArb8Trap
kArb8Tra
};
enum TGeoShape::EShapeType { kBitMask32
kGeoNoShape
kGeoBad
kGeoRSeg
kGeoPhiSeg
kGeoThetaSeg
kGeoVisX
kGeoVisY
kGeoVisZ
kGeoRunTimeShape
kGeoInvalidShape
kGeoTorus
kGeoBox
kGeoPara
kGeoSph
kGeoTube
kGeoTubeSeg
kGeoCone
kGeoConeSeg
kGeoPcon
kGeoPgon
kGeoArb8
kGeoEltu
kGeoTrap
kGeoCtub
kGeoTrd1
kGeoTrd2
kGeoComb
kGeoClosedShape
kGeoXtru
kGeoParaboloid
kGeoHalfSpace
kGeoHype
kGeoSavePrimitive
};
enum TObject::EStatusBits { kCanDelete
kMustCleanup
kObjInCanvas
kIsReferenced
kHasUUID
kCannotPick
kNoContextMenu
kInvalidObject
};
enum TObject::[unnamed] { kIsOnHeap
kNotDeleted
kZombie
kBitMask
kSingleKey
kOverwrite
kWriteDelete
};
protected:
Double_tTGeoBBox::fDXX half-length
Double_tTGeoBBox::fDYY half-length
Double_tTGeoBBox::fDZZ half-length
Double_tfDzhalf length in Z
TStringTNamed::fNameobject identifier
Double_tTGeoBBox::fOrigin[3]box origin
UInt_tTGeoShape::fShapeBitsshape bits
Int_tTGeoShape::fShapeIdshape id
TStringTNamed::fTitleobject title
Double_t*fTwist! [4] tangents of twist angles
Double_tfXY[8][2]list of vertices

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

TGeoArb8(const TGeoArb8& )
 Default ctor.
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)
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)
TGeoArb8(const TGeoArb8& )
copy constructor
TGeoArb8& operator=(const TGeoArb8& )
assignment operator
~TGeoArb8()
 Destructor.
Double_t Capacity()
 Computes capacity of the shape in [length^3].
void ComputeBBox()
 Computes bounding box for an Arb8 shape.
void ComputeTwist()
 Computes tangents of twist angles (angles between projections on XY plane
 of corresponding -dz +dz edges). Called after last point [7] was set.
Double_t GetTwist(Int_t iseg) const
 Get twist for segment I in range [0,3]
void ComputeNormal(Double_t* point, Double_t* dir, Double_t* norm)
 Compute normal to closest surface from POINT.
Bool_t Contains(Double_t* point) const
 Test if point is inside this shape.
 first check Z range
Double_t DistToPlane(Double_t* point, 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
Double_t DistFromOutside(Double_t* point, 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.
Double_t DistFromInside(Double_t* point, 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.
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.
Double_t GetAxisRange(Int_t iaxis, Double_t& xlo, Double_t& xhi) const
 Get shape range on a given axis.
void GetBoundingCylinder(Double_t* param) const
--- Fill vector param[4] with the bounding cylinder parameters. The order
 is the following : Rmin, Rmax, Phi1, Phi2
--- first compute rmin/rmax
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 successfull.
void GetPlaneNormal(Double_t* p1, Double_t* p2, Double_t* p3, Double_t* norm)
 Computes normal to plane defined by P1, P2 and P3
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.
void InspectShape()
 Prints shape parameters
Double_t Safety(Double_t* point, Bool_t in = kTRUE) const
 Computes the closest distance from given point to this shape.
Double_t SafetyToFace(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.
void SavePrimitive(ostream& out, Option_t* option = "")
 Save a primitive as a C++ statement(s) on output stream "out".
void SetPlaneVertices(Double_t zpl, Double_t* vertices) const
 Computes intersection points between plane at zpl and non-horizontal edges.
void SetDimensions(Double_t* param)
 Set all arb8 params in one step.
 param[0] = dz
 param[1] = x0
 param[2] = y0

void SetPoints(Double_t *points)
 Creates arb8 mesh points
void SetPoints(Float_t *points)
 Creates arb8 mesh points
void SetVertex(Int_t vnum, Double_t x, Double_t y)
  Set values for a given vertex.
void Sizeof3D()
 Fill size of this 3-D object
Int_t GetByteCount()
{return 100;}
Double_t GetDz()
{return fDz;}
TGeoShape * GetMakeRuntimeShape(TGeoShape* , TGeoMatrix* ) const
{return 0;}
Double_t * GetVertices()
{return &fXY[0][0];}
Bool_t IsCylType()
{return kFALSE;}
Bool_t IsSamePoint(Double_t* p1, Double_t* p2)
{return ((p1[0]==p2[0]) && (p1[1]==p2[1]))?kTRUE:kFALSE;}
Bool_t IsTwisted()
{return (fTwist==0)?kFALSE:kTRUE;}
void SetDz(Double_t dz)
{fDz = dz;}

Author: Andrei Gheata 24/10/01
Last update: root/geom:$Id: TGeoArb8.h 21425 2007-12-17 15:59:27Z brun $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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