a cell that represents a 3D orthogonal parallelepiped More...

#include <vtkVoxel.h>

Inheritance diagram for vtkVoxel:

Collaboration diagram for vtkVoxel:

Public Types
typedef vtkCell3D	Superclass

Public Types inherited from vtkCell3D
typedef vtkCell	Superclass

Public Types inherited from vtkCell
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

vtkVoxel *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...

void	GetEdgePoints (vtkIdType edgeId, const vtkIdType *&pts) override
	See vtkCell3D API for description of these methods. More...

void	GetEdgePoints (int edgeId, int *&pts) override

vtkIdType	GetFacePoints (vtkIdType faceId, const vtkIdType *&pts) override
	Get the list of vertices that define a face. More...

void	GetFacePoints (int faceId, int *&pts) override

void	GetEdgeToAdjacentFaces (vtkIdType edgeId, const vtkIdType *&pts) override
	Get the ids of the two adjacent faces to edge of id edgeId. More...

vtkIdType	GetFaceToAdjacentFaces (vtkIdType faceId, const vtkIdType *&faces) override
	Get the ids of the adjacent faces to face of id faceId. More...

vtkIdType	GetPointToIncidentEdges (vtkIdType pointId, const vtkIdType *&edges) override
	Get the ids of the incident edges to point of id pointId. More...

vtkIdType	GetPointToIncidentFaces (vtkIdType pointId, const vtkIdType *&faces) override
	Get the ids of the incident faces point of id pointId. More...

vtkIdType	GetPointToOneRingPoints (vtkIdType pointId, const vtkIdType *&pts) override
	Get the ids of a one-ring surrounding point of id pointId. More...

double *	GetParametricCoords () override
	Return a contiguous array of parametric coordinates of the points defining this cell. More...

bool	GetCentroid (double centroid[3]) const override
	Computes the centroid of the cell. More...

bool	IsInsideOut () override
	Returns true if the normals of the vtkCell3D point inside the cell. More...

double	ComputeBoundingSphere (double center[3]) const override
	Computes exact bounding sphere of this voxel. More...

int	GetCellType () override
	See the vtkCell API for descriptions of these methods. More...

int	GetCellDimension () override
	The topological dimension of the cell. More...

int	GetNumberOfEdges () override
	Return the number of edges in the cell. More...

int	GetNumberOfFaces () override
	Return the number of faces in the cell. More...

vtkCell *	GetEdge (int edgeId) override
	Return the edge cell from the edgeId of the cell. More...

vtkCell *	GetFace (int faceId) override
	Return the face cell from the faceId of the cell. More...

int	CellBoundary (int subId, const double pcoords[3], vtkIdList *pts) override
	Given parametric coordinates of a point, return the closest cell boundary, and whether the point is inside or outside of the cell. More...

void	Contour (double value, vtkDataArray cellScalars, vtkIncrementalPointLocator locator, vtkCellArray verts, vtkCellArray lines, vtkCellArray polys, vtkPointData inPd, vtkPointData outPd, vtkCellData inCd, vtkIdType cellId, vtkCellData *outCd) override
	Generate contouring primitives. More...

int	EvaluatePosition (const double x[3], double closestPoint[3], int &subId, double pcoords[3], double &dist2, double weights[]) override
	Given a point x[3] return inside(=1), outside(=0) cell, or (-1) computational problem encountered; evaluate parametric coordinates, sub-cell id (!=0 only if cell is composite), distance squared of point x[3] to cell (in particular, the sub-cell indicated), closest point on cell to x[3] (unless closestPoint is null, in which case, the closest point and dist2 are not found), and interpolation weights in cell. More...

void	EvaluateLocation (int &subId, const double pcoords[3], double x[3], double *weights) override
	Determine global coordinate (x[3]) from subId and parametric coordinates. More...

int	IntersectWithLine (const double p1[3], const double p2[3], double tol, double &t, double x[3], double pcoords[3], int &subId) override
	Intersect with a ray. More...

int	Triangulate (int index, vtkIdList ptIds, vtkPoints pts) override
	Generate simplices of proper dimension. More...

void	Derivatives (int subId, const double pcoords[3], const double values, int dim, double derivs) override
	Compute derivatives given cell subId and parametric coordinates. More...

void	Inflate (double dist) override
	Inflates the cell by dist. More...

void	InterpolateFunctions (const double pcoords[3], double weights[8]) override
	Compute the interpolation functions/derivatives (aka shape functions/derivatives) More...

void	InterpolateDerivs (const double pcoords[3], double derivs[24]) override

Public Member Functions inherited from vtkCell3D
vtkCell3D *	NewInstance () const

void	Clip (double value, vtkDataArray cellScalars, vtkIncrementalPointLocator locator, vtkCellArray connectivity, vtkPointData inPd, vtkPointData outPd, vtkCellData inCd, vtkIdType cellId, vtkCellData *outCd, int insideOut) override
	Cut (or clip) the cell based on the input cellScalars and the specified value. More...

virtual void	SetMergeTolerance (double)
	Set the tolerance for merging clip intersection points that are near the vertices of cells. More...

virtual double	GetMergeTolerance ()

Public Member Functions inherited from vtkCell
vtkCell *	NewInstance () const

void	Initialize (int npts, const vtkIdType pts, vtkPoints p)
	Initialize cell from outside with point ids and point coordinates specified. More...

void	Initialize (int npts, vtkPoints *p)
	Initialize the cell with point coordinates specified. More...

virtual void	ShallowCopy (vtkCell *c)
	Copy this cell by reference counting the internal data structures. More...

virtual void	DeepCopy (vtkCell *c)
	Copy this cell by completely copying internal data structures. More...

virtual int	IsLinear ()
	Non-linear cells require special treatment beyond the usual cell type and connectivity list information. More...

virtual int	RequiresInitialization ()
	Some cells require initialization prior to access. More...

virtual void	Initialize ()

virtual int	IsExplicitCell ()
	Explicit cells require additional representational information beyond the usual cell type and connectivity list information. More...

virtual int	RequiresExplicitFaceRepresentation ()
	Determine whether the cell requires explicit face representation, and methods for setting and getting the faces (see vtkPolyhedron for example usage of these methods). More...

virtual void	SetFaces (vtkIdType *vtkNotUsed(faces))

virtual vtkIdType *	GetFaces ()

vtkPoints *	GetPoints ()
	Get the point coordinates for the cell. More...

vtkIdType	GetNumberOfPoints ()
	Return the number of points in the cell. More...

vtkIdList *	GetPointIds ()
	Return the list of point ids defining the cell. More...

vtkIdType	GetPointId (int ptId)
	For cell point i, return the actual point id. More...

virtual int	IntersectWithCell (vtkCell *other, double tol=0.0)
	Intersects with an other cell. More...

virtual int	IntersectWithCell (vtkCell *other, const vtkBoundingBox &boudingBox, const vtkBoundingBox &otherBoundingBox, double tol=0.0)

void	GetBounds (double bounds[6])
	Compute cell bounding box (xmin,xmax,ymin,ymax,zmin,zmax). More...

double *	GetBounds ()
	Compute cell bounding box (xmin,xmax,ymin,ymax,zmin,zmax). More...

double	GetLength2 ()
	Compute Length squared of cell (i.e., bounding box diagonal squared). More...

virtual int	GetParametricCenter (double pcoords[3])
	Return center of the cell in parametric coordinates. More...

virtual double	GetParametricDistance (const double pcoords[3])
	Return the distance of the parametric coordinate provided to the cell. More...

virtual int	IsPrimaryCell ()
	Return whether this cell type has a fixed topology or whether the topology varies depending on the data (e.g., vtkConvexPointSet). More...

virtual void	InterpolateFunctions (const double vtkNotUsed(pcoords)[3], double *vtkNotUsed(weight))
	Compute the interpolation functions/derivatives (aka shape functions/derivatives) No-ops at this level. More...

virtual void	InterpolateDerivs (const double vtkNotUsed(pcoords)[3], double *vtkNotUsed(derivs))

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on. More...

virtual void	DebugOff ()
	Turn debugging output off. More...

bool	GetDebug ()
	Get the value of the debug flag. More...

void	SetDebug (bool debugFlag)
	Set the value of the debug flag. More...

virtual void	Modified ()
	Update the modification time for this object. More...

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time. More...

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

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 )

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)

vtkTypeBool	HasObserver (const char event, vtkCommand )

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

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)
	Allow user to set the AbortFlagOn() with the return value of the callback method. More...

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...

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
	Return the class name as a string. More...

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...

virtual void	Delete ()
	Delete a VTK object. More...

virtual void	FastDelete ()
	Delete a reference to this object. More...

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream. More...

virtual void	PrintHeader (ostream &os, vtkIndent indent)

virtual void	PrintTrailer (ostream &os, vtkIndent indent)

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object). More...

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object). More...

int	GetReferenceCount ()
	Return the current reference count of this object. More...

void	SetReferenceCount (int)
	Sets the reference count. More...

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space. More...

Static Public Member Functions
static vtkVoxel *	New ()

static vtkTypeBool	IsTypeOf (const char *type)

static vtkVoxel *	SafeDownCast (vtkObjectBase *o)

static void	InterpolationDerivs (const double pcoords[3], double derivs[24])

static void	InterpolationFunctions (const double pcoords[3], double weights[8])
	Compute the interpolation functions. More...

static int *	GetTriangleCases (int caseId)
	Return the case table for table-based isocontouring (aka marching cubes style implementations). More...

static const vtkIdType *	GetEdgeArray (vtkIdType edgeId)
	Return the ids of the vertices defining edge/face (`edgeId`/‘faceId’). More...

static const vtkIdType *	GetFaceArray (vtkIdType faceId)

static const vtkIdType *	GetEdgeToAdjacentFacesArray (vtkIdType edgeId)
	Static method version of GetEdgeToAdjacentFaces. More...

static const vtkIdType *	GetFaceToAdjacentFacesArray (vtkIdType faceId)
	Static method version of GetFaceToAdjacentFaces. More...

static const vtkIdType *	GetPointToIncidentEdgesArray (vtkIdType pointId)
	Static method version of GetPointToIncidentEdgesArray. More...

static const vtkIdType *	GetPointToIncidentFacesArray (vtkIdType pointId)
	Static method version of GetPointToIncidentFacesArray. More...

static const vtkIdType *	GetPointToOneRingPointsArray (vtkIdType pointId)
	Static method version of GetPointToOneRingPoints. More...

static bool	ComputeCentroid (vtkPoints points, const vtkIdType pointIds, double centroid[3])
	Static method version of GetCentroid. More...

Static Public Member Functions inherited from vtkCell3D
static vtkTypeBool	IsTypeOf (const char *type)

static vtkCell3D *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkCell
static vtkTypeBool	IsTypeOf (const char *type)

static vtkCell *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes. More...

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static int	GetGlobalWarningDisplay ()

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class. More...

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. More...

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space. More...

Static Public Attributes
static constexpr vtkIdType	NumberOfPoints = 8
	static constexpr handle on the number of points. More...

static constexpr vtkIdType	NumberOfEdges = 12
	static contexpr handle on the number of faces. More...

static constexpr vtkIdType	NumberOfFaces = 6
	static contexpr handle on the number of edges. More...

static constexpr vtkIdType	MaximumFaceSize = 4
	static contexpr handle on the maximum face size. More...

static constexpr vtkIdType	MaximumValence = 3
	static constexpr handle on the maximum valence of this cell. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkVoxel ()

	~vtkVoxel () override

Protected Member Functions inherited from vtkCell3D
	vtkCell3D ()

	~vtkCell3D () override

Protected Member Functions inherited from vtkCell
	vtkCell ()

	~vtkCell () override

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events. More...

void	InternalReleaseFocus ()

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Additional Inherited Members
Public Attributes inherited from vtkCell
vtkPoints *	Points

vtkIdList *	PointIds

Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Protected Attributes inherited from vtkCell3D
vtkOrderedTriangulator *	Triangulator

double	MergeTolerance

vtkTetra *	ClipTetra

vtkDoubleArray *	ClipScalars

Protected Attributes inherited from vtkCell
double	Bounds [6]

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

a cell that represents a 3D orthogonal parallelepiped

vtkVoxel is a concrete implementation of vtkCell to represent a 3D orthogonal parallelepiped. Unlike vtkHexahedron, vtkVoxel has interior angles of 90 degrees, and sides are parallel to coordinate axes. This results in large increases in computational performance.

See also: vtkConvexPointSet vtkHexahedron vtkPyramid vtkTetra vtkWedge

Definition at line 38 of file vtkVoxel.h.

Member Typedef Documentation

◆ Superclass

typedef vtkCell3D vtkVoxel::Superclass

Definition at line 42 of file vtkVoxel.h.

Constructor & Destructor Documentation

◆ vtkVoxel()

vtkVoxel::vtkVoxel ( )

protected

◆ ~vtkVoxel()

vtkVoxel::~vtkVoxel ( )

overrideprotected

Member Function Documentation

◆ New()

static vtkVoxel* vtkVoxel::New ( )

static

◆ IsTypeOf()

static vtkTypeBool vtkVoxel::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkVoxel::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 vtkCell3D.

◆ SafeDownCast()

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

static

◆ NewInstanceInternal()

virtual vtkObjectBase* vtkVoxel::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkCell3D.

◆ NewInstance()

vtkVoxel* vtkVoxel::NewInstance ( ) const

◆ PrintSelf()

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

overridevirtual

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 vtkCell3D.

◆ GetEdgePoints() [1/2]

void vtkVoxel::GetEdgePoints	(	vtkIdType	edgeId,
		const vtkIdType *&	pts
	)

overridevirtual

See vtkCell3D API for description of these methods.

Warning: Face points of vtkVoxel are not sorted properly. {pts[0], pts[1], pts[3], pts[2]} forms consecutive points of one face.

Implements vtkCell3D.

◆ GetEdgePoints() [2/2]

void vtkVoxel::GetEdgePoints	(	int	edgeId,
		int *&	pts
	)

overridevirtual

Implements vtkCell3D.

◆ GetFacePoints() [1/2]

vtkIdType vtkVoxel::GetFacePoints	(	vtkIdType	faceId,
		const vtkIdType *&	pts
	)

overridevirtual

Get the list of vertices that define a face.

The list is terminated with a negative number. Note that the vertices are 0-offset; that is, they refer to the ids of the cell, not the point ids of the mesh that the cell belongs to. The faceId must range between 0<=faceId<this->GetNumberOfFaces().

Returns: The number of points in face faceId

Implements vtkCell3D.

◆ GetFacePoints() [2/2]

void vtkVoxel::GetFacePoints	(	int	faceId,
		int *&	pts
	)

overridevirtual

Implements vtkCell3D.

◆ GetEdgeToAdjacentFaces()

void vtkVoxel::GetEdgeToAdjacentFaces	(	vtkIdType	edgeId,
		const vtkIdType *&	faceIds
	)

overridevirtual

Get the ids of the two adjacent faces to edge of id edgeId.

The output face ids are sorted from id of lowest rank to highest. Note that the faces are 0-offset; that is, they refer to the ids of the cells, not the face ids of the mesh that the cell belongs to. The edgeId must range between 0<=edgeId<this->GetNumberOfEdges().

Implements vtkCell3D.

◆ GetFaceToAdjacentFaces()

vtkIdType vtkVoxel::GetFaceToAdjacentFaces	(	vtkIdType	faceId,
		const vtkIdType *&	faceIds
	)

overridevirtual

Get the ids of the adjacent faces to face of id faceId.

The order of faces is consistent. They are always ordered in counter clockwise w.r.t. normal orientation. The first id faces[0] corresponds to the face sharing point of id pts[0] where pts is obtained from this->GetFacePoints(faceId, pts), being the "most counter clockwise" oriented w.r.t. face faceId. Note that the faces are 0-offset; that is, they refer to the ids of the cell, not the face ids of the mesh that the cell belongs to. The faceId must be between 0<=faceId<this->GetNumberOfFaces();

Warning: If the vtkCell3D is "inside out", i.e. normals point inside the cell, the order is inverted.

Returns: The number of adjacent faces to faceId.

Implements vtkCell3D.

◆ GetPointToIncidentEdges()

vtkIdType vtkVoxel::GetPointToIncidentEdges	(	vtkIdType	pointId,
		const vtkIdType *&	edgeIds
	)

overridevirtual

Get the ids of the incident edges to point of id pointId.

Edges are sorted in counter clockwise order w.r.t. bisectrix pointing outside the cell at point of id pointId. The first edge corresponds to the edge containing point of id pts[0], where pts is obtained from this->GetPointToOnRingVertices(pointId, pts). Note that the edges are 0-offset; that is, they refer to the ids of the cell, not the edge ids of the mesh that the cell belongs to. The edgeId must be between 0<=edgeId<this->GetNumberOfEdges();

Warning: If the vtkCell3D is "inside out", i.e. normals point inside the cell, the order is inverted.

Returns: The valence of point pointId.

Implements vtkCell3D.

◆ GetPointToIncidentFaces()

vtkIdType vtkVoxel::GetPointToIncidentFaces	(	vtkIdType	pointId,
		const vtkIdType *&	faceIds
	)

overridevirtual

Get the ids of the incident faces point of id pointId.

Faces are sorted in counter clockwise order w.r.t. bisectrix pointing outside the cell at point of id pointId. The first face corresponds to the face containing edge of id edges[0], where edges is obtained from this->GetPointToIncidentEdges(pointId, edges), such that face faces[0] is the "most counterclockwise" face incident to point pointId containing edges[0]. Note that the faces are 0-offset; that is, they refer to the ids of the cell, not the face ids of the mesh that the cell belongs to. The pointId must be between 0<=pointId<this->GetNumberOfPoints().

Warning: If the vtkCell3D is "inside out", i.e. normals point inside the cell, the order is inverted.

Returns: The valence of point pointId.

Implements vtkCell3D.

◆ GetPointToOneRingPoints()

vtkIdType vtkVoxel::GetPointToOneRingPoints	(	vtkIdType	pointId,
		const vtkIdType *&	pts
	)

overridevirtual

Get the ids of a one-ring surrounding point of id pointId.

Points are sorted in counter clockwise order w.r.t. bisectrix pointing outside the cell at point of id pointId. The first point corresponds to the point contained in edges[0], where edges is obtained from this->GetPointToIncidentEdges(pointId, edges). Note that the points are 0-offset; that is, they refer to the ids of the cell, not the point ids of the mesh that the cell belongs to. The pointId must be between 0<pointId<this->GetNumberOfPoints().

Returns: The valence of point pointId.

Implements vtkCell3D.

◆ GetParametricCoords()

double* vtkVoxel::GetParametricCoords ( )

overridevirtual

Return a contiguous array of parametric coordinates of the points defining this cell.

In other words, (px,py,pz, px,py,pz, etc..) The coordinates are ordered consistent with the definition of the point ordering for the cell. This method returns a non-nullptr pointer when the cell is a primary type (i.e., IsPrimaryCell() is true). Note that 3D parametric coordinates are returned no matter what the topological dimension of the cell.

Reimplemented from vtkCell.

◆ GetCentroid()

bool vtkVoxel::GetCentroid ( double centroid[3] ) const

overridevirtual

Computes the centroid of the cell.

Implements vtkCell3D.

◆ IsInsideOut()

bool vtkVoxel::IsInsideOut ( )

overridevirtual

Returns true if the normals of the vtkCell3D point inside the cell.

Warning: This flag is not precomputed. It is advised for the return result of this method to be stored in a local boolean by the user if needed multiple times.

Reimplemented from vtkCell3D.

◆ ComputeBoundingSphere()

double vtkVoxel::ComputeBoundingSphere ( double center[3] ) const

overridevirtual

Computes exact bounding sphere of this voxel.

Reimplemented from vtkCell.

◆ GetCellType()

int vtkVoxel::GetCellType ( )

inlineoverridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Definition at line 106 of file vtkVoxel.h.

◆ GetCellDimension()

int vtkVoxel::GetCellDimension ( )

inlineoverridevirtual

The topological dimension of the cell.

(Satisfies vtkCell API.)

Reimplemented from vtkCell3D.

Definition at line 107 of file vtkVoxel.h.

◆ GetNumberOfEdges()

int vtkVoxel::GetNumberOfEdges ( )

inlineoverridevirtual

Return the number of edges in the cell.

Implements vtkCell.

Definition at line 108 of file vtkVoxel.h.

◆ GetNumberOfFaces()

int vtkVoxel::GetNumberOfFaces ( )

inlineoverridevirtual

Return the number of faces in the cell.

Implements vtkCell.

Definition at line 109 of file vtkVoxel.h.

◆ GetEdge()

vtkCell* vtkVoxel::GetEdge ( int edgeId )

overridevirtual

Return the edge cell from the edgeId of the cell.

Implements vtkCell.

◆ GetFace()

vtkCell* vtkVoxel::GetFace ( int faceId )

overridevirtual

Return the face cell from the faceId of the cell.

Implements vtkCell.

◆ CellBoundary()

int vtkVoxel::CellBoundary	(	int	subId,
		const double	pcoords[3],
		vtkIdList *	pts
	)

overridevirtual

Given parametric coordinates of a point, return the closest cell boundary, and whether the point is inside or outside of the cell.

The cell boundary is defined by a list of points (pts) that specify a face (3D cell), edge (2D cell), or vertex (1D cell). If the return value of the method is != 0, then the point is inside the cell.

Implements vtkCell.

◆ Contour()

void vtkVoxel::Contour	(	double	value,
		vtkDataArray *	cellScalars,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	verts,
		vtkCellArray *	lines,
		vtkCellArray *	polys,
		vtkPointData *	inPd,
		vtkPointData *	outPd,
		vtkCellData *	inCd,
		vtkIdType	cellId,
		vtkCellData *	outCd
	)

overridevirtual

Generate contouring primitives.

The scalar list cellScalars are scalar values at each cell point. The point locator is essentially a points list that merges points as they are inserted (i.e., prevents duplicates). Contouring primitives can be vertices, lines, or polygons. It is possible to interpolate point data along the edge by providing input and output point data - if outPd is nullptr, then no interpolation is performed. Also, if the output cell data is non-nullptr, the cell data from the contoured cell is passed to the generated contouring primitives. (Note: the CopyAllocate() method must be invoked on both the output cell and point data. The cellId refers to the cell from which the cell data is copied.)

Reimplemented from vtkCell3D.

◆ EvaluatePosition()

int vtkVoxel::EvaluatePosition	(	const double	x[3],
		double	closestPoint[3],
		int &	subId,
		double	pcoords[3],
		double &	dist2,
		double	weights[]
	)

overridevirtual

Given a point x[3] return inside(=1), outside(=0) cell, or (-1) computational problem encountered; evaluate parametric coordinates, sub-cell id (!=0 only if cell is composite), distance squared of point x[3] to cell (in particular, the sub-cell indicated), closest point on cell to x[3] (unless closestPoint is null, in which case, the closest point and dist2 are not found), and interpolation weights in cell.

(The number of weights is equal to the number of points defining the cell). Note: on rare occasions a -1 is returned from the method. This means that numerical error has occurred and all data returned from this method should be ignored. Also, inside/outside is determine parametrically. That is, a point is inside if it satisfies parametric limits. This can cause problems for cells of topological dimension 2 or less, since a point in 3D can project onto the cell within parametric limits but be "far" from the cell. Thus the value dist2 may be checked to determine true in/out.

Implements vtkCell.

◆ EvaluateLocation()

void vtkVoxel::EvaluateLocation	(	int &	subId,
		const double	pcoords[3],
		double	x[3],
		double *	weights
	)

overridevirtual

Determine global coordinate (x[3]) from subId and parametric coordinates.

Also returns interpolation weights. (The number of weights is equal to the number of points in the cell.)

Implements vtkCell.

◆ IntersectWithLine()

int vtkVoxel::IntersectWithLine	(	const double	p1[3],
		const double	p2[3],
		double	tol,
		double &	t,
		double	x[3],
		double	pcoords[3],
		int &	subId
	)

overridevirtual

Intersect with a ray.

Return parametric coordinates (both line and cell) and global intersection coordinates, given ray definition p1[3], p2[3] and tolerance tol. The method returns non-zero value if intersection occurs. A parametric distance t between 0 and 1 along the ray representing the intersection point, the point coordinates x[3] in data coordinates and also pcoords[3] in parametric coordinates. subId is the index within the cell if a composed cell like a triangle strip.

Implements vtkCell.

◆ Triangulate()

int vtkVoxel::Triangulate	(	int	index,
		vtkIdList *	ptIds,
		vtkPoints *	pts
	)

overridevirtual

Generate simplices of proper dimension.

If cell is 3D, tetrahedron are generated; if 2D triangles; if 1D lines; if 0D points. The form of the output is a sequence of points, each n+1 points (where n is topological cell dimension) defining a simplex. The index is a parameter that controls which triangulation to use (if more than one is possible). If numerical degeneracy encountered, 0 is returned, otherwise 1 is returned. This method does not insert new points: all the points that define the simplices are the points that define the cell.

Implements vtkCell.

◆ Derivatives()

void vtkVoxel::Derivatives	(	int	subId,
		const double	pcoords[3],
		const double *	values,
		int	dim,
		double *	derivs
	)

overridevirtual

Compute derivatives given cell subId and parametric coordinates.

The values array is a series of data value(s) at the cell points. There is a one-to-one correspondence between cell point and data value(s). Dim is the number of data values per cell point. Derivs are derivatives in the x-y-z coordinate directions for each data value. Thus, if computing derivatives for a scalar function in a hexahedron, dim=1, 8 values are supplied, and 3 deriv values are returned (i.e., derivatives in x-y-z directions). On the other hand, if computing derivatives of velocity (vx,vy,vz) dim=3, 24 values are supplied ((vx,vy,vz)1, (vx,vy,vz)2, ....()8), and 9 deriv values are returned ((d(vx)/dx),(d(vx)/dy),(d(vx)/dz), (d(vy)/dx),(d(vy)/dy), (d(vy)/dz), (d(vz)/dx),(d(vz)/dy),(d(vz)/dz)).

Implements vtkCell.

◆ Inflate()

void vtkVoxel::Inflate ( double dist )

overridevirtual

Inflates the cell by dist.

Each point is displaced by dist in the direction of every halfedge. Input can be negative. If so, the cell will shrink. Artifacts will appear if one shrinks with -dist larger than any edge length, probably causing the cell to self-intersect.

Reimplemented from vtkCell3D.

◆ InterpolationDerivs()

static void vtkVoxel::InterpolationDerivs	(	const double	pcoords[3],
		double	derivs[24]
	)

static

◆ InterpolateFunctions()

void vtkVoxel::InterpolateFunctions	(	const double	pcoords[3],
		double	weights[8]
	)

inlineoverride

Compute the interpolation functions/derivatives (aka shape functions/derivatives)

Definition at line 133 of file vtkVoxel.h.

◆ InterpolateDerivs()

void vtkVoxel::InterpolateDerivs	(	const double	pcoords[3],
		double	derivs[24]
	)

inlineoverride

Definition at line 137 of file vtkVoxel.h.

◆ InterpolationFunctions()

static void vtkVoxel::InterpolationFunctions	(	const double	pcoords[3],
		double	weights[8]
	)

static

Compute the interpolation functions.

This static method is for convenience. Use the member function if you already have an instance of a voxel.

◆ GetTriangleCases()

static int* vtkVoxel::GetTriangleCases ( int caseId )

static

Return the case table for table-based isocontouring (aka marching cubes style implementations).

A linear 3D cell with N vertices will have 2**N cases. The returned case array lists three edges in order to produce one output triangle which may be repeated to generate multiple triangles. The list of cases terminates with a -1 entry.

◆ GetEdgeArray()

static const vtkIdType* vtkVoxel::GetEdgeArray ( vtkIdType edgeId )

static

Return the ids of the vertices defining edge/face (edgeId/‘faceId’).

Ids are related to the cell, not to the dataset.

Note: The return type changed. It used to be int*, it is now const vtkIdType*. This is so ids are unified between vtkCell and vtkPoints, and so vtkCell ids can be used as inputs in algorithms such as vtkPolygon::ComputeNormal.

◆ GetFaceArray()

static const vtkIdType* vtkVoxel::GetFaceArray ( vtkIdType faceId )

static

◆ GetEdgeToAdjacentFacesArray()

static const vtkIdType* vtkVoxel::GetEdgeToAdjacentFacesArray ( vtkIdType edgeId )

static

Static method version of GetEdgeToAdjacentFaces.

◆ GetFaceToAdjacentFacesArray()

static const vtkIdType* vtkVoxel::GetFaceToAdjacentFacesArray ( vtkIdType faceId )

static

Static method version of GetFaceToAdjacentFaces.

◆ GetPointToIncidentEdgesArray()

static const vtkIdType* vtkVoxel::GetPointToIncidentEdgesArray ( vtkIdType pointId )

static

Static method version of GetPointToIncidentEdgesArray.

◆ GetPointToIncidentFacesArray()

static const vtkIdType* vtkVoxel::GetPointToIncidentFacesArray ( vtkIdType pointId )

static

Static method version of GetPointToIncidentFacesArray.

◆ GetPointToOneRingPointsArray()

static const vtkIdType* vtkVoxel::GetPointToOneRingPointsArray ( vtkIdType pointId )

static

Static method version of GetPointToOneRingPoints.

◆ ComputeCentroid()

static bool vtkVoxel::ComputeCentroid	(	vtkPoints *	points,
		const vtkIdType *	pointIds,
		double	centroid[3]
	)

static

Static method version of GetCentroid.

Member Data Documentation

◆ NumberOfPoints

constexpr vtkIdType vtkVoxel::NumberOfPoints = 8

staticconstexpr

static constexpr handle on the number of points.

Definition at line 77 of file vtkVoxel.h.

◆ NumberOfEdges

constexpr vtkIdType vtkVoxel::NumberOfEdges = 12

staticconstexpr

static contexpr handle on the number of faces.

Definition at line 82 of file vtkVoxel.h.

◆ NumberOfFaces

constexpr vtkIdType vtkVoxel::NumberOfFaces = 6

staticconstexpr

static contexpr handle on the number of edges.

Definition at line 87 of file vtkVoxel.h.

◆ MaximumFaceSize

constexpr vtkIdType vtkVoxel::MaximumFaceSize = 4

staticconstexpr

static contexpr handle on the maximum face size.

It can also be used to know the number of faces adjacent to one face.

Definition at line 93 of file vtkVoxel.h.

◆ MaximumValence

constexpr vtkIdType vtkVoxel::MaximumValence = 3

staticconstexpr

static constexpr handle on the maximum valence of this cell.

The valence of a vertex is the number of incident edges (or equivalently faces) to this vertex. It is also equal to the size of a one ring neighborhood of a vertex.

Definition at line 100 of file vtkVoxel.h.

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

Common/DataModel/vtkVoxel.h

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkVoxel()

◆ ~vtkVoxel()

Member Function Documentation

◆ New()

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ GetEdgePoints() [1/2]

◆ GetEdgePoints() [2/2]

◆ GetFacePoints() [1/2]

◆ GetFacePoints() [2/2]

◆ GetEdgeToAdjacentFaces()

◆ GetFaceToAdjacentFaces()

◆ GetPointToIncidentEdges()

◆ GetPointToIncidentFaces()

◆ GetPointToOneRingPoints()

◆ GetParametricCoords()

◆ GetCentroid()

◆ IsInsideOut()

◆ ComputeBoundingSphere()

◆ GetCellType()

◆ GetCellDimension()

◆ GetNumberOfEdges()

◆ GetNumberOfFaces()

◆ GetEdge()

◆ GetFace()

◆ CellBoundary()

◆ Contour()

◆ EvaluatePosition()

◆ EvaluateLocation()

◆ IntersectWithLine()

◆ Triangulate()

◆ Derivatives()

◆ Inflate()

◆ InterpolationDerivs()

◆ InterpolateFunctions()

◆ InterpolateDerivs()

◆ InterpolationFunctions()

◆ GetTriangleCases()

◆ GetEdgeArray()

◆ GetFaceArray()

◆ GetEdgeToAdjacentFacesArray()

◆ GetFaceToAdjacentFacesArray()

◆ GetPointToIncidentEdgesArray()

◆ GetPointToIncidentFacesArray()

◆ GetPointToOneRingPointsArray()

◆ ComputeCentroid()

Member Data Documentation

◆ NumberOfPoints

◆ NumberOfEdges

◆ NumberOfFaces

◆ MaximumFaceSize

◆ MaximumValence