TGraphDelaunay generates a Delaunay triangulation of a TGraph2D.

This triangulation code derives from an implementation done by Luke Jones (Royal Holloway, University of London) in April 2002 in the PAW context.

This software cannot be guaranteed to work under all circumstances. They were originally written to work with a few hundred points in an XY space with similar X and Y ranges.

Definition of Delaunay triangulation (After B. Delaunay): For a set S of points in the Euclidean plane, the unique triangulation DT(S) of S such that no point in S is inside the circumcircle of any triangle in DT(S). DT(S) is the dual of the Voronoi diagram of S. If n is the number of points in S, the Voronoi diagram of S is the partitioning of the plane containing S points into n convex polygons such that each polygon contains exactly one point and every point in a given polygon is closer to its central point than to any other. A Voronoi diagram is sometimes also known as a Dirichlet tessellation.

This applet gives a nice practical view of Delaunay triangulation and Voronoi diagram.

Definition at line 30 of file TGraphDelaunay.h.

Public Member Functions
	TGraphDelaunay ()
	TGraphDelaunay default constructor. More...

	TGraphDelaunay (TGraph2D *g)
	TGraphDelaunay normal constructor. More...

virtual	~TGraphDelaunay ()
	TGraphDelaunay destructor. More...

Double_t	ComputeZ (Double_t x, Double_t y)
	Return the z value corresponding to the (x,y) point in fGraph2D. More...

void	FindAllTriangles ()
	Attempt to find all the Delaunay triangles of the point set. More...

TGraph2D *	GetGraph2D () const

Double_t	GetMarginBinsContent () const

Int_t *	GetMTried () const

Int_t	GetNdt () const

Int_t *	GetNTried () const

Int_t *	GetPTried () const

Double_t *	GetXN () const

Double_t	GetXNmax () const

Double_t	GetXNmin () const

Double_t *	GetYN () const

Double_t	GetYNmax () const

Double_t	GetYNmin () const

Double_t	Interpolate (Double_t x, Double_t y)
	Finds the Delaunay triangle that the point (xi,yi) sits in (if any) and calculate a z-value for it by linearly interpolating the z-values that make up that triangle. More...

void	SetMarginBinsContent (Double_t z=0.)
	Sets the histogram bin height for points lying outside the convex hull ie: the bins in the margin. More...

void	SetMaxIter (Int_t n=100000)
	Defines the number of triangles tested for a Delaunay triangle (number of iterations) before abandoning the search. More...

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 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 *	GetName () const
	Returns name of object. 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 ()
	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	Clear (Option_t *="")

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 abstract method. More...

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

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

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object. More...

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects. 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	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py). 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 const char *	GetName () const
	Returns 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 const char *	GetTitle () const
	Returns title of object. More...

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...

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

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout. More...

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	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself. More...

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

virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself. 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...

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

Protected Member Functions
void	CreateTrianglesDataStructure ()
	Function used internally only. More...

Bool_t	Enclose (Int_t T1, Int_t T2, Int_t T3, Int_t Ex) const
	Is point e inside the triangle t1-t2-t3 ? More...

void	FileIt (Int_t P, Int_t N, Int_t M)
	Files the triangle defined by the 3 vertices p, n and m into the fxTried arrays. More...

void	FindHull ()
	Finds those points which make up the convex hull of the set. More...

Bool_t	InHull (Int_t E, Int_t X) const
	Is point e inside the hull defined by all points apart from x ? More...

Double_t	InterpolateOnPlane (Int_t TI1, Int_t TI2, Int_t TI3, Int_t E) const
	Finds the z-value at point e given that it lies on the plane defined by t1,t2,t3. 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
Bool_t	fAllTri
	!True if FindAllTriangles() has been performed on fGraph2D More...

Double_t *	fDist
	!Array used to order mass points by distance More...

TGraph2D *	fGraph2D
	!2D graph containing the user data More...

Int_t *	fHullPoints
	!Hull points of size fNhull More...

Bool_t	fInit
	!True if CreateTrianglesDataStructure() and FindHull() have been performed More...

Int_t	fMaxIter
	!Maximum number of iterations to find Delaunay triangles More...

Int_t *	fMTried
	! More...

Int_t	fNdt
	!Number of Delaunay triangles found More...

Int_t	fNhull
	!Number of points in the hull More...

Int_t	fNpoints
	!Number of data points in fGraph2D More...

Int_t *	fNTried
	!Delaunay triangles storage of size fNdt More...

Int_t *	fOrder
	!Array used to order mass points by distance More...

Int_t *	fPTried
	! More...

Int_t	fTriedSize
	!Real size of the fxTried arrays More...

Double_t *	fX
	!Pointer to fGraph2D->fX More...

Double_t *	fXN
	!fGraph2D vectors normalized of size fNpoints More...

Double_t	fXNmax
	!Maximum value of fXN More...

Double_t	fXNmin
	!Minimum value of fXN More...

Double_t	fXoffset
	! More...

Double_t	fXScaleFactor
	! More...

Double_t *	fY
	!Pointer to fGraph2D->fY More...

Double_t *	fYN
	!fGraph2D vectors normalized of size fNpoints More...

Double_t	fYNmax
	!Maximum value of fYN More...

Double_t	fYNmin
	!Minimum value of fYN More...

Double_t	fYoffset
	!Parameters used to normalize user data More...

Double_t	fYScaleFactor
	! More...

Double_t *	fZ
	!Pointer to fGraph2D->fZ More...

Double_t	fZout
	!Histogram bin height for points lying outside the convex hull More...

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Private Member Functions
	TGraphDelaunay (const TGraphDelaunay &)

TGraphDelaunay &	operator= (const TGraphDelaunay &)

Additional Inherited Members
Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = BIT(0) , kOverwrite = BIT(1) , kWriteDelete = BIT(2) }

enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }

enum	EStatusBits { kCanDelete = BIT(0) , kMustCleanup = BIT(3) , kIsReferenced = BIT(4) , kHasUUID = BIT(5) , kCannotPick = BIT(6) , kNoContextMenu = BIT(8) , kInvalidObject = BIT(13) }

Static Public Member Functions inherited from 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 inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

#include <TGraphDelaunay.h>

Inheritance diagram for TGraphDelaunay:

[legend]

Constructor & Destructor Documentation

◆ TGraphDelaunay() [1/3]

TGraphDelaunay::TGraphDelaunay ( const TGraphDelaunay & )

private

◆ TGraphDelaunay() [2/3]

TGraphDelaunay::TGraphDelaunay ( )

TGraphDelaunay default constructor.

Definition at line 49 of file TGraphDelaunay.cxx.

◆ TGraphDelaunay() [3/3]

TGraphDelaunay::TGraphDelaunay ( TGraph2D * g )

TGraphDelaunay normal constructor.

Definition at line 86 of file TGraphDelaunay.cxx.

◆ ~TGraphDelaunay()

TGraphDelaunay::~TGraphDelaunay ( )

virtual

TGraphDelaunay destructor.

Definition at line 123 of file TGraphDelaunay.cxx.

Member Function Documentation

◆ ComputeZ()

Double_t TGraphDelaunay::ComputeZ	(	Double_t	x,
		Double_t	y
	)

Return the z value corresponding to the (x,y) point in fGraph2D.

Definition at line 148 of file TGraphDelaunay.cxx.

◆ CreateTrianglesDataStructure()

void TGraphDelaunay::CreateTrianglesDataStructure ( )

protected

Function used internally only.

It creates the data structures needed to compute the Delaunay triangles.

Definition at line 178 of file TGraphDelaunay.cxx.

◆ Enclose()

Bool_t TGraphDelaunay::Enclose	(	Int_t	T1,
		Int_t	T2,
		Int_t	T3,
		Int_t	Ex
	)		const

protected

Is point e inside the triangle t1-t2-t3 ?

Definition at line 215 of file TGraphDelaunay.cxx.

◆ FileIt()

void TGraphDelaunay::FileIt	(	Int_t	p,
		Int_t	n,
		Int_t	m
	)

protected

Files the triangle defined by the 3 vertices p, n and m into the fxTried arrays.

If these arrays are to small they are automatically expanded.

Definition at line 237 of file TGraphDelaunay.cxx.

◆ FindAllTriangles()

void TGraphDelaunay::FindAllTriangles ( )

Attempt to find all the Delaunay triangles of the point set.

It is not guaranteed that it will fully succeed, and no check is made that it has fully succeeded (such a check would be possible by referencing the points that make up the convex hull). The method is to check if each triangle shares all three of its sides with other triangles. If not, a point is generated just outside the triangle on the side(s) not shared, and a new triangle is found for that point. If this method is not working properly (many triangles are not being found) it's probably because the new points are too far beyond or too close to the non-shared sides. Fiddling with the size of the ‘alittlebit’ parameter may help.

Definition at line 290 of file TGraphDelaunay.cxx.

◆ FindHull()

void TGraphDelaunay::FindHull ( )

protected

Finds those points which make up the convex hull of the set.

If the xy plane were a sheet of wood, and the points were nails hammered into it at the respective coordinates, then if an elastic band were stretched over all the nails it would form the shape of the convex hull. Those nails in contact with it are the points that make up the hull.

Definition at line 421 of file TGraphDelaunay.cxx.

◆ GetGraph2D()

TGraph2D * TGraphDelaunay::GetGraph2D ( ) const

inline

Definition at line 84 of file TGraphDelaunay.h.

◆ GetMarginBinsContent()

Double_t TGraphDelaunay::GetMarginBinsContent ( ) const

inline

Definition at line 85 of file TGraphDelaunay.h.

◆ GetMTried()

Int_t * TGraphDelaunay::GetMTried ( ) const

inline

Definition at line 89 of file TGraphDelaunay.h.

◆ GetNdt()

Int_t TGraphDelaunay::GetNdt ( ) const

inline

Definition at line 86 of file TGraphDelaunay.h.

◆ GetNTried()

Int_t * TGraphDelaunay::GetNTried ( ) const

inline

Definition at line 88 of file TGraphDelaunay.h.

◆ GetPTried()

Int_t * TGraphDelaunay::GetPTried ( ) const

inline

Definition at line 87 of file TGraphDelaunay.h.

◆ GetXN()

Double_t * TGraphDelaunay::GetXN ( ) const

inline

Definition at line 90 of file TGraphDelaunay.h.

◆ GetXNmax()

Double_t TGraphDelaunay::GetXNmax ( ) const

inline

Definition at line 93 of file TGraphDelaunay.h.

◆ GetXNmin()

Double_t TGraphDelaunay::GetXNmin ( ) const

inline

Definition at line 92 of file TGraphDelaunay.h.

◆ GetYN()

Double_t * TGraphDelaunay::GetYN ( ) const

inline

Definition at line 91 of file TGraphDelaunay.h.

◆ GetYNmax()

Double_t TGraphDelaunay::GetYNmax ( ) const

inline

Definition at line 95 of file TGraphDelaunay.h.

◆ GetYNmin()

Double_t TGraphDelaunay::GetYNmin ( ) const

inline

Definition at line 94 of file TGraphDelaunay.h.

◆ InHull()

Bool_t TGraphDelaunay::InHull	(	Int_t	E,
		Int_t	X
	)		const

protected

Is point e inside the hull defined by all points apart from x ?

Definition at line 448 of file TGraphDelaunay.cxx.

◆ Interpolate()

Double_t TGraphDelaunay::Interpolate	(	Double_t	x,
		Double_t	y
	)

Finds the Delaunay triangle that the point (xi,yi) sits in (if any) and calculate a z-value for it by linearly interpolating the z-values that make up that triangle.

Definition at line 595 of file TGraphDelaunay.cxx.

◆ InterpolateOnPlane()

Double_t TGraphDelaunay::InterpolateOnPlane	(	Int_t	TI1,
		Int_t	TI2,
		Int_t	TI3,
		Int_t	E
	)		const

protected

Finds the z-value at point e given that it lies on the plane defined by t1,t2,t3.

Definition at line 556 of file TGraphDelaunay.cxx.

◆ operator=()

TGraphDelaunay & TGraphDelaunay::operator= ( const TGraphDelaunay & )

private

◆ SetMarginBinsContent()

void TGraphDelaunay::SetMarginBinsContent ( Double_t z = 0. )

Sets the histogram bin height for points lying outside the convex hull ie: the bins in the margin.

Definition at line 943 of file TGraphDelaunay.cxx.

◆ SetMaxIter()

void TGraphDelaunay::SetMaxIter ( Int_t n = 100000 )

Defines the number of triangles tested for a Delaunay triangle (number of iterations) before abandoning the search.

Definition at line 932 of file TGraphDelaunay.cxx.

Member Data Documentation

◆ fAllTri

Bool_t TGraphDelaunay::fAllTri

protected

!True if FindAllTriangles() has been performed on fGraph2D

Definition at line 64 of file TGraphDelaunay.h.

◆ fDist

Double_t* TGraphDelaunay::fDist

protected

!Array used to order mass points by distance

Definition at line 56 of file TGraphDelaunay.h.

◆ fGraph2D

TGraph2D* TGraphDelaunay::fGraph2D

protected

!2D graph containing the user data

Definition at line 66 of file TGraphDelaunay.h.

◆ fHullPoints

Int_t* TGraphDelaunay::fHullPoints

protected

!Hull points of size fNhull

Definition at line 62 of file TGraphDelaunay.h.

◆ fInit

Bool_t TGraphDelaunay::fInit

protected

!True if CreateTrianglesDataStructure() and FindHull() have been performed

Definition at line 65 of file TGraphDelaunay.h.

◆ fMaxIter

Int_t TGraphDelaunay::fMaxIter

protected

!Maximum number of iterations to find Delaunay triangles

Definition at line 57 of file TGraphDelaunay.h.

◆ fMTried

Int_t* TGraphDelaunay::fMTried

protected

!

Definition at line 61 of file TGraphDelaunay.h.

◆ fNdt

Int_t TGraphDelaunay::fNdt

protected

!Number of Delaunay triangles found

Definition at line 39 of file TGraphDelaunay.h.

◆ fNhull

Int_t TGraphDelaunay::fNhull

protected

!Number of points in the hull

Definition at line 41 of file TGraphDelaunay.h.

◆ fNpoints

Int_t TGraphDelaunay::fNpoints

protected

!Number of data points in fGraph2D

Definition at line 40 of file TGraphDelaunay.h.

◆ fNTried

Int_t* TGraphDelaunay::fNTried

protected

!Delaunay triangles storage of size fNdt

Definition at line 60 of file TGraphDelaunay.h.

◆ fOrder

Int_t* TGraphDelaunay::fOrder

protected

!Array used to order mass points by distance

Definition at line 63 of file TGraphDelaunay.h.

◆ fPTried

Int_t* TGraphDelaunay::fPTried

protected

!

Definition at line 59 of file TGraphDelaunay.h.

◆ fTriedSize

Int_t TGraphDelaunay::fTriedSize

protected

!Real size of the fxTried arrays

Definition at line 58 of file TGraphDelaunay.h.

◆ fX

Double_t* TGraphDelaunay::fX

protected

!Pointer to fGraph2D->fX

Definition at line 42 of file TGraphDelaunay.h.

◆ fXN

Double_t* TGraphDelaunay::fXN

protected

!fGraph2D vectors normalized of size fNpoints

Definition at line 45 of file TGraphDelaunay.h.

◆ fXNmax

Double_t TGraphDelaunay::fXNmax

protected

!Maximum value of fXN

Definition at line 48 of file TGraphDelaunay.h.

◆ fXNmin

Double_t TGraphDelaunay::fXNmin

protected

!Minimum value of fXN

Definition at line 47 of file TGraphDelaunay.h.

◆ fXoffset

Double_t TGraphDelaunay::fXoffset

protected

!

Definition at line 51 of file TGraphDelaunay.h.

◆ fXScaleFactor

Double_t TGraphDelaunay::fXScaleFactor

protected

!

Definition at line 53 of file TGraphDelaunay.h.

◆ fY

Double_t* TGraphDelaunay::fY

protected

!Pointer to fGraph2D->fY

Definition at line 43 of file TGraphDelaunay.h.

◆ fYN

Double_t* TGraphDelaunay::fYN

protected

!fGraph2D vectors normalized of size fNpoints

Definition at line 46 of file TGraphDelaunay.h.

◆ fYNmax

Double_t TGraphDelaunay::fYNmax

protected

!Maximum value of fYN

Definition at line 50 of file TGraphDelaunay.h.

◆ fYNmin

Double_t TGraphDelaunay::fYNmin

protected

!Minimum value of fYN

Definition at line 49 of file TGraphDelaunay.h.

◆ fYoffset

Double_t TGraphDelaunay::fYoffset

protected

!Parameters used to normalize user data

Definition at line 52 of file TGraphDelaunay.h.

◆ fYScaleFactor

Double_t TGraphDelaunay::fYScaleFactor

protected

!

Definition at line 54 of file TGraphDelaunay.h.

◆ fZ

Double_t* TGraphDelaunay::fZ

protected

!Pointer to fGraph2D->fZ

Definition at line 44 of file TGraphDelaunay.h.

◆ fZout

Double_t TGraphDelaunay::fZout

protected

!Histogram bin height for points lying outside the convex hull

Definition at line 55 of file TGraphDelaunay.h.

Libraries for TGraphDelaunay:

[legend]

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ TGraphDelaunay() [1/3]

◆ TGraphDelaunay() [2/3]

◆ TGraphDelaunay() [3/3]

◆ ~TGraphDelaunay()

Member Function Documentation

◆ ComputeZ()

◆ CreateTrianglesDataStructure()

◆ Enclose()

◆ FileIt()

◆ FindAllTriangles()

◆ FindHull()

◆ GetGraph2D()

◆ GetMarginBinsContent()

◆ GetMTried()

◆ GetNdt()

◆ GetNTried()

◆ GetPTried()

◆ GetXN()

◆ GetXNmax()

◆ GetXNmin()

◆ GetYN()

◆ GetYNmax()

◆ GetYNmin()

◆ InHull()

◆ Interpolate()

◆ InterpolateOnPlane()

◆ operator=()

◆ SetMarginBinsContent()

◆ SetMaxIter()

Member Data Documentation

◆ fAllTri

◆ fDist

◆ fGraph2D

◆ fHullPoints

◆ fInit

◆ fMaxIter

◆ fMTried

◆ fNdt

◆ fNhull

◆ fNpoints

◆ fNTried

◆ fOrder

◆ fPTried

◆ fTriedSize

◆ fX

◆ fXN

◆ fXNmax

◆ fXNmin

◆ fXoffset

◆ fXScaleFactor

◆ fY

◆ fYN

◆ fYNmax

◆ fYNmin

◆ fYoffset

◆ fYScaleFactor

◆ fZ

◆ fZout