vtkDelaunay3D Class Reference

create 3D Delaunay triangulation of input points More...

#include <vtkDelaunay3D.h>

Inheritance diagram for vtkDelaunay3D:

Collaboration diagram for vtkDelaunay3D:

Public Types
typedef vtkUnstructuredGridAlgorithm	Superclass
Public Types inherited from vtkUnstructuredGridAlgorithm
typedef vtkAlgorithm	Superclass
Public Types inherited from vtkAlgorithm
typedef vtkObject	Superclass
enum	DesiredOutputPrecision { SINGLE_PRECISION, DOUBLE_PRECISION, DEFAULT_PRECISION }
Public Types inherited from vtkObject
typedef vtkObjectBase	Superclass

Public Member Functions
virtual int	IsA (const char *type)
vtkDelaunay3D *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
void	CreateDefaultLocator ()
void	EndPointInsertion ()
unsigned long	GetMTime ()
virtual void	SetAlpha (double)
virtual double	GetAlpha ()
virtual void	SetAlphaTets (int)
virtual int	GetAlphaTets ()
virtual void	AlphaTetsOn ()
virtual void	AlphaTetsOff ()
virtual void	SetAlphaTris (int)
virtual int	GetAlphaTris ()
virtual void	AlphaTrisOn ()
virtual void	AlphaTrisOff ()
virtual void	SetAlphaLines (int)
virtual int	GetAlphaLines ()
virtual void	AlphaLinesOn ()
virtual void	AlphaLinesOff ()
virtual void	SetAlphaVerts (int)
virtual int	GetAlphaVerts ()
virtual void	AlphaVertsOn ()
virtual void	AlphaVertsOff ()
virtual void	SetTolerance (double)
virtual double	GetTolerance ()
virtual void	SetOffset (double)
virtual double	GetOffset ()
virtual void	SetBoundingTriangulation (int)
virtual int	GetBoundingTriangulation ()
virtual void	BoundingTriangulationOn ()
virtual void	BoundingTriangulationOff ()
void	SetLocator (vtkIncrementalPointLocator *locator)
virtual vtkIncrementalPointLocator *	GetLocator ()
vtkUnstructuredGrid *	InitPointInsertion (double center[3], double length, vtkIdType numPts, vtkPoints *&pts)
void	InsertPoint (vtkUnstructuredGrid *Mesh, vtkPoints *points, vtkIdType id, double x[3], vtkIdList *holeTetras)
virtual void	SetOutputPointsPrecision (int)
virtual int	GetOutputPointsPrecision ()
Public Member Functions inherited from vtkUnstructuredGridAlgorithm
vtkUnstructuredGridAlgorithm *	NewInstance () const
vtkDataObject *	GetInput (int port)
vtkDataObject *	GetInput ()
vtkUnstructuredGrid *	GetUnstructuredGridInput (int port)
vtkUnstructuredGrid *	GetOutput ()
vtkUnstructuredGrid *	GetOutput (int)
virtual void	SetOutput (vtkDataObject *d)
virtual int	ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
void	SetInputData (vtkDataObject *)
void	SetInputData (int, vtkDataObject *)
void	AddInputData (vtkDataObject *)
void	AddInputData (int, vtkDataObject *)
Public Member Functions inherited from vtkAlgorithm
vtkAlgorithm *	NewInstance () const
int	HasExecutive ()
vtkExecutive *	GetExecutive ()
virtual void	SetExecutive (vtkExecutive *executive)
virtual int	ModifyRequest (vtkInformation *request, int when)
vtkInformation *	GetInputPortInformation (int port)
vtkInformation *	GetOutputPortInformation (int port)
int	GetNumberOfInputPorts ()
int	GetNumberOfOutputPorts ()
void	UpdateProgress (double amount)
vtkInformation *	GetInputArrayInformation (int idx)
void	RemoveAllInputs ()
vtkDataObject *	GetOutputDataObject (int port)
virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	RemoveInputConnection (int port, int idx)
virtual void	RemoveAllInputConnections (int port)
int	GetNumberOfInputConnections (int port)
int	GetTotalNumberOfInputConnections ()
vtkAlgorithmOutput *	GetInputConnection (int port, int index)
vtkAlgorithm *	GetInputAlgorithm (int port, int index, int &algPort)
vtkAlgorithm *	GetInputAlgorithm (int port, int index)
vtkExecutive *	GetInputExecutive (int port, int index)
vtkInformation *	GetInputInformation (int port, int index)
vtkInformation *	GetOutputInformation (int port)
virtual void	UpdateInformation ()
virtual void	UpdateDataObject ()
virtual void	PropagateUpdateExtent ()
virtual void	UpdateWholeExtent ()
void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
int	SetUpdateExtentToWholeExtent (int port)
int	SetUpdateExtentToWholeExtent ()
void	SetUpdateExtent (int port, int extent[6])
int	ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo)
virtual int	ComputePipelineMTime (vtkInformation *request, vtkInformationVector **inInfoVec, vtkInformationVector *outInfoVec, int requestFromOutputPort, unsigned long *mtime)
virtual vtkInformation *	GetInformation ()
virtual void	SetInformation (vtkInformation *)
virtual void	Register (vtkObjectBase *o)
virtual void	UnRegister (vtkObjectBase *o)
virtual void	SetAbortExecute (int)
virtual int	GetAbortExecute ()
virtual void	AbortExecuteOn ()
virtual void	AbortExecuteOff ()
virtual void	SetProgress (double)
virtual double	GetProgress ()
void	SetProgressText (const char *ptext)
virtual char *	GetProgressText ()
virtual unsigned long	GetErrorCode ()
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
vtkDataObject *	GetInputDataObject (int port, int connection)
virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	SetInputConnection (vtkAlgorithmOutput *input)
virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	AddInputConnection (vtkAlgorithmOutput *input)
virtual void	SetInputDataObject (int port, vtkDataObject *data)
virtual void	SetInputDataObject (vtkDataObject *data)
virtual void	AddInputDataObject (int port, vtkDataObject *data)
virtual void	AddInputDataObject (vtkDataObject *data)
vtkAlgorithmOutput *	GetOutputPort (int index)
vtkAlgorithmOutput *	GetOutputPort ()
vtkAlgorithm *	GetInputAlgorithm ()
vtkExecutive *	GetInputExecutive ()
vtkInformation *	GetInputInformation ()
virtual void	Update (int port)
virtual void	Update ()
virtual void	SetReleaseDataFlag (int)
virtual int	GetReleaseDataFlag ()
void	ReleaseDataFlagOn ()
void	ReleaseDataFlagOff ()
int	UpdateExtentIsEmpty (vtkInformation *pinfo, vtkDataObject *output)
int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
void	SetUpdateExtent (int port, int piece, int numPieces, int ghostLevel)
void	SetUpdateExtent (int piece, int numPieces, int ghostLevel)
void	SetUpdateExtent (int extent[6])
int *	GetUpdateExtent ()
int *	GetUpdateExtent (int port)
void	GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
void	GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
void	GetUpdateExtent (int extent[6])
void	GetUpdateExtent (int port, int extent[6])
int	GetUpdatePiece ()
int	GetUpdatePiece (int port)
int	GetUpdateNumberOfPieces ()
int	GetUpdateNumberOfPieces (int port)
int	GetUpdateGhostLevel ()
int	GetUpdateGhostLevel (int port)
void	SetProgressObserver (vtkProgressObserver *)
virtual vtkProgressObserver *	GetProgressObserver ()
Public Member Functions inherited from vtkObject
vtkObject *	NewInstance () const
virtual void	DebugOn ()
virtual void	DebugOff ()
bool	GetDebug ()
void	SetDebug (bool debugFlag)
virtual void	Modified ()
unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
unsigned long	AddObserver (const char *event, vtkCommand *, float priority=0.0f)
vtkCommand *	GetCommand (unsigned long tag)
void	RemoveObserver (vtkCommand *)
void	RemoveObservers (unsigned long event, vtkCommand *)
void	RemoveObservers (const char *event, vtkCommand *)
int	HasObserver (unsigned long event, vtkCommand *)
int	HasObserver (const char *event, vtkCommand *)
void	RemoveObserver (unsigned long tag)
void	RemoveObservers (unsigned long event)
void	RemoveObservers (const char *event)
void	RemoveAllObservers ()
int	HasObserver (unsigned long event)
int	HasObserver (const char *event)
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
int	InvokeEvent (unsigned long event, void *callData)
int	InvokeEvent (const char *event, void *callData)
int	InvokeEvent (unsigned long event)
int	InvokeEvent (const char *event)
Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
virtual void	Delete ()
virtual void	FastDelete ()
void	Print (ostream &os)
void	SetReferenceCount (int)
void	PrintRevisions (ostream &)
virtual void	PrintHeader (ostream &os, vtkIndent indent)
virtual void	PrintTrailer (ostream &os, vtkIndent indent)
int	GetReferenceCount ()

Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkDelaunay3D *	SafeDownCast (vtkObjectBase *o)
static vtkDelaunay3D *	New ()
Static Public Member Functions inherited from vtkUnstructuredGridAlgorithm
static vtkUnstructuredGridAlgorithm *	New ()
static int	IsTypeOf (const char *type)
static vtkUnstructuredGridAlgorithm *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithm *	New ()
static int	IsTypeOf (const char *type)
static vtkAlgorithm *	SafeDownCast (vtkObjectBase *o)
static vtkInformationIntegerKey *	INPUT_IS_OPTIONAL ()
static vtkInformationIntegerKey *	INPUT_IS_REPEATABLE ()
static vtkInformationInformationVectorKey *	INPUT_REQUIRED_FIELDS ()
static vtkInformationStringVectorKey *	INPUT_REQUIRED_DATA_TYPE ()
static vtkInformationInformationVectorKey *	INPUT_ARRAYS_TO_PROCESS ()
static vtkInformationIntegerKey *	INPUT_PORT ()
static vtkInformationIntegerKey *	INPUT_CONNECTION ()
static vtkInformationIntegerKey *	CAN_PRODUCE_SUB_EXTENT ()
static vtkInformationIntegerKey *	CAN_HANDLE_PIECE_REQUEST ()
static void	SetDefaultExecutivePrototype (vtkExecutive *proto)
Static Public Member Functions inherited from vtkObject
static int	IsTypeOf (const char *type)
static vtkObject *	SafeDownCast (vtkObjectBase *o)
static vtkObject *	New ()
static void	BreakOnError ()
static void	SetGlobalWarningDisplay (int val)
static void	GlobalWarningDisplayOn ()
static void	GlobalWarningDisplayOff ()
static int	GetGlobalWarningDisplay ()
Static Public Member Functions inherited from vtkObjectBase
static int	IsTypeOf (const char *name)
static vtkObjectBase *	New ()

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkDelaunay3D ()
	~vtkDelaunay3D ()
int	RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
int	FindTetra (vtkUnstructuredGrid *Mesh, double x[3], vtkIdType tetId, int depth)
int	InSphere (double x[3], vtkIdType tetraId)
void	InsertTetra (vtkUnstructuredGrid *Mesh, vtkPoints *pts, vtkIdType tetraId)
vtkIdType	FindEnclosingFaces (double x[3], vtkUnstructuredGrid *Mesh, vtkIdList *tetras, vtkIdList *faces, vtkIncrementalPointLocator *Locator)
virtual int	FillInputPortInformation (int, vtkInformation *)
Protected Member Functions inherited from vtkUnstructuredGridAlgorithm
	vtkUnstructuredGridAlgorithm ()
	~vtkUnstructuredGridAlgorithm ()
virtual int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual int	FillOutputPortInformation (int port, vtkInformation *info)
virtual int	RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()
	~vtkAlgorithm ()
virtual void	SetNumberOfInputPorts (int n)
virtual void	SetNumberOfOutputPorts (int n)
int	InputPortIndexInRange (int index, const char *action)
int	OutputPortIndexInRange (int index, const char *action)
int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
virtual vtkExecutive *	CreateDefaultExecutive ()
virtual void	ReportReferences (vtkGarbageCollector *)
virtual void	SetNumberOfInputConnections (int port, int n)
int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
int	GetInputArrayAssociation (int idx, vtkDataObject *input)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
void	SetInputDataInternal (int port, vtkDataObject *input)
void	AddInputDataInternal (int port, vtkDataObject *input)
virtual void	SetErrorCode (unsigned long)
Protected Member Functions inherited from vtkObject
	vtkObject ()
virtual	~vtkObject ()
virtual void	RegisterInternal (vtkObjectBase *, int check)
virtual void	UnRegisterInternal (vtkObjectBase *, int check)
void	InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=NULL)
void	InternalReleaseFocus ()
Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()
virtual	~vtkObjectBase ()
virtual void	CollectRevisions (ostream &)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
double	Alpha
int	AlphaTets
int	AlphaTris
int	AlphaLines
int	AlphaVerts
double	Tolerance
int	BoundingTriangulation
double	Offset
int	OutputPointsPrecision
vtkIncrementalPointLocator *	Locator
vtkTetraArray *	TetraArray
int	NumberOfDuplicatePoints
int	NumberOfDegeneracies
int *	References
Protected Attributes inherited from vtkAlgorithm
vtkInformation *	Information
double	Progress
char *	ProgressText
vtkProgressObserver *	ProgressObserver
unsigned long	ErrorCode
Protected Attributes inherited from vtkObject
bool	Debug
vtkTimeStamp	MTime
vtkSubjectHelper *	SubjectHelper
Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount
vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
int	AbortExecute
Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()
Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

create 3D Delaunay triangulation of input points

vtkDelaunay3D is a filter that constructs a 3D Delaunay triangulation from a list of input points. These points may be represented by any dataset of type vtkPointSet and subclasses. The output of the filter is an unstructured grid dataset. Usually the output is a tetrahedral mesh, but if a non-zero alpha distance value is specified (called the "alpha" value), then only tetrahedra, triangles, edges, and vertices laying within the alpha radius are output. In other words, non-zero alpha values may result in arbitrary combinations of tetrahedra, triangles, lines, and vertices. (The notion of alpha value is derived from Edelsbrunner's work on "alpha shapes".) Note that a modification to alpha shapes enables output of combinations of tetrahedra, triangles, lines, and/or verts (see the boolean ivars AlphaTets, AlphaTris, AlphaLines, AlphaVerts).

The 3D Delaunay triangulation is defined as the triangulation that satisfies the Delaunay criterion for n-dimensional simplexes (in this case n=3 and the simplexes are tetrahedra). This criterion states that a circumsphere of each simplex in a triangulation contains only the n+1 defining points of the simplex. (See text for more information.) While in two dimensions this translates into an "optimal" triangulation, this is not true in 3D, since a measurement for optimality in 3D is not agreed on.

Delaunay triangulations are used to build topological structures from unorganized (or unstructured) points. The input to this filter is a list of points specified in 3D. (If you wish to create 2D triangulations see vtkDelaunay2D.) The output is an unstructured grid.

The Delaunay triangulation can be numerically sensitive. To prevent problems, try to avoid injecting points that will result in triangles with bad aspect ratios (1000:1 or greater). In practice this means inserting points that are "widely dispersed", and enables smooth transition of triangle sizes throughout the mesh. (You may even want to add extra points to create a better point distribution.) If numerical problems are present, you will see a warning message to this effect at the end of the triangulation process.

Warning

Points arranged on a regular lattice (termed degenerate cases) can be triangulated in more than one way (at least according to the Delaunay criterion). The choice of triangulation (as implemented by this algorithm) depends on the order of the input points. The first four points will form a tetrahedron; other degenerate points (relative to this initial tetrahedron) will not break it.

Points that are coincident (or nearly so) may be discarded by the algorithm. This is because the Delaunay triangulation requires unique input points. You can control the definition of coincidence with the "Tolerance" instance variable.

The output of the Delaunay triangulation is supposedly a convex hull. In certain cases this implementation may not generate the convex hull. This behavior can be controlled by the Offset instance variable. Offset is a multiplier used to control the size of the initial triangulation. The larger the offset value, the more likely you will generate a convex hull; and the more likely you are to see numerical problems.

The implementation of this algorithm varies from the 2D Delaunay algorithm (i.e., vtkDelaunay2D) in an important way. When points are injected into the triangulation, the search for the enclosing tetrahedron is quite different. In the 3D case, the closest previously inserted point point is found, and then the connected tetrahedra are searched to find the containing one. (In 2D, a "walk" towards the enclosing triangle is performed.) If the triangulation is Delaunay, then an enclosing tetrahedron will be found. However, in degenerate cases an enclosing tetrahedron may not be found and the point will be rejected.

See also

vtkDelaunay2D vtkGaussianSplatter vtkUnstructuredGrid

Examples:

vtkDelaunay3D (Examples)

Tests:

vtkDelaunay3D (Tests)

Definition at line 112 of file vtkDelaunay3D.h.

Member Typedef Documentation

typedef vtkUnstructuredGridAlgorithm vtkDelaunay3D::Superclass

Definition at line 115 of file vtkDelaunay3D.h.

Constructor & Destructor Documentation

vtkDelaunay3D::vtkDelaunay3D ( )

protected

vtkDelaunay3D::~vtkDelaunay3D ( )

protected

Member Function Documentation

static int vtkDelaunay3D::IsTypeOf ( const char *  type )

static

virtual int vtkDelaunay3D::IsA ( const char *  name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkUnstructuredGridAlgorithm.

static vtkDelaunay3D* vtkDelaunay3D::SafeDownCast ( vtkObjectBase *  o )

static

virtual vtkObjectBase* vtkDelaunay3D::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkUnstructuredGridAlgorithm.

vtkDelaunay3D* vtkDelaunay3D::NewInstance

(

)

const

void vtkDelaunay3D::PrintSelf ( ostream &  os, vtkIndent  indent  )

virtual

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkUnstructuredGridAlgorithm.

static vtkDelaunay3D* vtkDelaunay3D::New ( )

static

Construct object with Alpha = 0.0; Tolerance = 0.001; Offset = 2.5; BoundingTriangulation turned off.

virtual void vtkDelaunay3D::SetAlpha ( double  )

virtual

Specify alpha (or distance) value to control output of this filter. For a non-zero alpha value, only verts, edges, faces, or tetra contained within the circumsphere (of radius alpha) will be output. Otherwise, only tetrahedra will be output. Note that the flags AlphaTets, AlphaTris, AlphaLines, and AlphaVerts control whether these primitives are output when Alpha is non-zero. (By default all tets, triangles, lines and verts satisfying the alpha shape criterion are output.)

virtual double vtkDelaunay3D::GetAlpha ( )

virtual

Specify alpha (or distance) value to control output of this filter. For a non-zero alpha value, only verts, edges, faces, or tetra contained within the circumsphere (of radius alpha) will be output. Otherwise, only tetrahedra will be output. Note that the flags AlphaTets, AlphaTris, AlphaLines, and AlphaVerts control whether these primitives are output when Alpha is non-zero. (By default all tets, triangles, lines and verts satisfying the alpha shape criterion are output.)

virtual void vtkDelaunay3D::SetAlphaTets ( int  )

virtual

Boolean controls whether tetrahedra are output for non-zero alpha values.

virtual int vtkDelaunay3D::GetAlphaTets ( )

virtual

Boolean controls whether tetrahedra are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaTetsOn ( )

virtual

Boolean controls whether tetrahedra are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaTetsOff ( )

virtual

Boolean controls whether tetrahedra are output for non-zero alpha values.

virtual void vtkDelaunay3D::SetAlphaTris ( int  )

virtual

Boolean controls whether triangles are output for non-zero alpha values.

virtual int vtkDelaunay3D::GetAlphaTris ( )

virtual

Boolean controls whether triangles are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaTrisOn ( )

virtual

Boolean controls whether triangles are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaTrisOff ( )

virtual

Boolean controls whether triangles are output for non-zero alpha values.

virtual void vtkDelaunay3D::SetAlphaLines ( int  )

virtual

Boolean controls whether lines are output for non-zero alpha values.

virtual int vtkDelaunay3D::GetAlphaLines ( )

virtual

Boolean controls whether lines are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaLinesOn ( )

virtual

Boolean controls whether lines are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaLinesOff ( )

virtual

Boolean controls whether lines are output for non-zero alpha values.

virtual void vtkDelaunay3D::SetAlphaVerts ( int  )

virtual

Boolean controls whether vertices are output for non-zero alpha values.

virtual int vtkDelaunay3D::GetAlphaVerts ( )

virtual

Boolean controls whether vertices are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaVertsOn ( )

virtual

Boolean controls whether vertices are output for non-zero alpha values.

virtual void vtkDelaunay3D::AlphaVertsOff ( )

virtual

Boolean controls whether vertices are output for non-zero alpha values.

virtual void vtkDelaunay3D::SetTolerance ( double  )

virtual

Specify a tolerance to control discarding of closely spaced points. This tolerance is specified as a fraction of the diagonal length of the bounding box of the points.

virtual double vtkDelaunay3D::GetTolerance ( )

virtual

Specify a tolerance to control discarding of closely spaced points. This tolerance is specified as a fraction of the diagonal length of the bounding box of the points.

virtual void vtkDelaunay3D::SetOffset ( double  )

virtual

Specify a multiplier to control the size of the initial, bounding Delaunay triangulation.

virtual double vtkDelaunay3D::GetOffset ( )

virtual

Specify a multiplier to control the size of the initial, bounding Delaunay triangulation.

virtual void vtkDelaunay3D::SetBoundingTriangulation ( int  )

virtual

Boolean controls whether bounding triangulation points (and associated triangles) are included in the output. (These are introduced as an initial triangulation to begin the triangulation process. This feature is nice for debugging output.)

virtual int vtkDelaunay3D::GetBoundingTriangulation ( )

virtual

Boolean controls whether bounding triangulation points (and associated triangles) are included in the output. (These are introduced as an initial triangulation to begin the triangulation process. This feature is nice for debugging output.)

virtual void vtkDelaunay3D::BoundingTriangulationOn ( )

virtual

Boolean controls whether bounding triangulation points (and associated triangles) are included in the output. (These are introduced as an initial triangulation to begin the triangulation process. This feature is nice for debugging output.)

virtual void vtkDelaunay3D::BoundingTriangulationOff ( )

virtual

Boolean controls whether bounding triangulation points (and associated triangles) are included in the output. (These are introduced as an initial triangulation to begin the triangulation process. This feature is nice for debugging output.)

void vtkDelaunay3D::SetLocator

(

vtkIncrementalPointLocator *

locator

)

Set / get a spatial locator for merging points. By default, an instance of vtkPointLocator is used.

virtual vtkIncrementalPointLocator* vtkDelaunay3D::GetLocator ( )

virtual

Set / get a spatial locator for merging points. By default, an instance of vtkPointLocator is used.

void vtkDelaunay3D::CreateDefaultLocator

(

)

Create default locator. Used to create one when none is specified. The locator is used to eliminate "coincident" points.

vtkUnstructuredGrid* vtkDelaunay3D::InitPointInsertion	(	double	center[3],
		double	length,
		vtkIdType	numPts,
		vtkPoints *&	pts
	)

This is a helper method used with InsertPoint() to create tetrahedronalizations of points. Its purpose is construct an initial Delaunay triangulation into which to inject other points. You must specify the center of a cubical bounding box and its length, as well as the number of points to insert. The method returns a pointer to an unstructured grid. Use this pointer to manipulate the mesh as necessary. You must delete (with Delete()) the mesh when done. Note: This initialization method places points forming bounding octahedron at the end of the Mesh's point list. That is, InsertPoint() assumes that you will be inserting points between (0,numPtsToInsert-1).

void vtkDelaunay3D::InsertPoint	(	vtkUnstructuredGrid *	Mesh,
		vtkPoints *	points,
		vtkIdType	id,
		double	x[3],
		vtkIdList *	holeTetras
	)

This is a helper method used with InitPointInsertion() to create tetrahedronalizations of points. Its purpose is to inject point at coordinates specified into tetrahedronalization. The point id is an index into the list of points in the mesh structure. (See vtkDelaunay3D::InitPointInsertion() for more information.) When you have completed inserting points, traverse the mesh structure to extract desired tetrahedra (or tetra faces and edges).The holeTetras id list lists all the tetrahedra that are deleted (invalid) in the mesh structure.

void vtkDelaunay3D::EndPointInsertion

(

)

Invoke this method after all points have been inserted. The purpose of the method is to clean up internal data structures. Note that the (vtkUnstructuredGrid *)Mesh returned from InitPointInsertion() is NOT deleted, you still are responsible for cleaning that up.

unsigned long vtkDelaunay3D::GetMTime ( )

virtual

Return the MTime also considering the locator.

Reimplemented from vtkObject.

virtual void vtkDelaunay3D::SetOutputPointsPrecision ( int  )

virtual

Set/get the desired precision for the output types. See the documentation for the vtkAlgorithm::DesiredOutputPrecision enum for an explanation of the available precision settings.

virtual int vtkDelaunay3D::GetOutputPointsPrecision ( )

virtual

Set/get the desired precision for the output types. See the documentation for the vtkAlgorithm::DesiredOutputPrecision enum for an explanation of the available precision settings.

int vtkDelaunay3D::RequestData ( vtkInformation *  request, vtkInformationVector **  inputVector, vtkInformationVector *  outputVector  )

protectedvirtual

This is called by the superclass. This is the method you should override.

Reimplemented from vtkUnstructuredGridAlgorithm.

int vtkDelaunay3D::FindTetra ( vtkUnstructuredGrid *  Mesh, double  x[3], vtkIdType  tetId, int  depth  )

protected

int vtkDelaunay3D::InSphere ( double  x[3], vtkIdType  tetraId  )

protected

void vtkDelaunay3D::InsertTetra ( vtkUnstructuredGrid *  Mesh, vtkPoints *  pts, vtkIdType  tetraId  )

protected

vtkIdType vtkDelaunay3D::FindEnclosingFaces ( double  x[3], vtkUnstructuredGrid *  Mesh, vtkIdList *  tetras, vtkIdList *  faces, vtkIncrementalPointLocator *  Locator  )

protected

virtual int vtkDelaunay3D::FillInputPortInformation ( int  port, vtkInformation *  info  )

protectedvirtual

Fill the input port information objects for this algorithm. This is invoked by the first call to GetInputPortInformation for each port so subclasses can specify what they can handle.

Reimplemented from vtkUnstructuredGridAlgorithm.

Member Data Documentation

double vtkDelaunay3D::Alpha

protected

Definition at line 254 of file vtkDelaunay3D.h.

int vtkDelaunay3D::AlphaTets

protected

Definition at line 255 of file vtkDelaunay3D.h.

int vtkDelaunay3D::AlphaTris

protected

Definition at line 256 of file vtkDelaunay3D.h.

int vtkDelaunay3D::AlphaLines

protected

Definition at line 257 of file vtkDelaunay3D.h.

int vtkDelaunay3D::AlphaVerts

protected

Definition at line 258 of file vtkDelaunay3D.h.

double vtkDelaunay3D::Tolerance

protected

Definition at line 259 of file vtkDelaunay3D.h.

int vtkDelaunay3D::BoundingTriangulation

protected

Definition at line 260 of file vtkDelaunay3D.h.

double vtkDelaunay3D::Offset

protected

Definition at line 261 of file vtkDelaunay3D.h.

int vtkDelaunay3D::OutputPointsPrecision

protected

Definition at line 262 of file vtkDelaunay3D.h.

vtkIncrementalPointLocator* vtkDelaunay3D::Locator

protected

Definition at line 264 of file vtkDelaunay3D.h.

vtkTetraArray* vtkDelaunay3D::TetraArray

protected

Definition at line 266 of file vtkDelaunay3D.h.

int vtkDelaunay3D::NumberOfDuplicatePoints

protected

Definition at line 273 of file vtkDelaunay3D.h.

int vtkDelaunay3D::NumberOfDegeneracies

protected

Definition at line 274 of file vtkDelaunay3D.h.

int* vtkDelaunay3D::References

protected

Definition at line 277 of file vtkDelaunay3D.h.

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

• /home/boeckb/code/depot/group-kitware/vtk/build-release/Utilities/Doxygen/dox/Filters/Core/vtkDelaunay3D.h