Base class for a discontinuous Galerkin cells of all shapes. More...

#include <vtkDGCell.h>

Inheritance diagram for vtkDGCell:

Collaboration diagram for vtkDGCell:

Classes
struct	Source
	Records describing the source arrays for cells or cell-sides. More...

Public Types
enum	Shape : int { Vertex , Edge , Triangle , Quadrilateral , Tetrahedron , Hexahedron , Wedge , Pyramid , None }
	All possible shapes for DG cells. More...

typedef vtkCellMetadata	Superclass

Public Types inherited from vtkCellMetadata
using	CellTypeId = vtkStringToken::Hash

using	DOFType = vtkStringToken

using	MetadataConstructor = std::function< vtkSmartPointer< vtkCellMetadata >(vtkCellGrid *)>

using	ConstructorMap = std::unordered_map< vtkStringToken, MetadataConstructor >

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.

vtkDGCell *	NewInstance () const

	vtkInheritanceHierarchyOverrideMacro (vtkDGCell)

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

Source &	GetCellSpec ()
	Provide access to the connectivity array used to define cells of this type.

std::vector< Source > &	GetSideSpecs ()
	Provide access to the (cellId,sideId)-arrays used to define side-cells of this type.

vtkIdType	GetNumberOfCells () override
	Return the number of cells (and sides) of this type present in this cell grid.

virtual bool	IsInside (const vtkVector3d &rst, double tolerance=1e-6)=0
	Return true if the parametric coordinates (rst) lie inside the reference cell or its closure and false otherwise.

virtual Shape	GetShape () const =0
	Return the topological shape of this cell or side type.

virtual int	GetDimension () const
	Return the parametric dimension of this cell type (0, 1, 2, or 3).

virtual int	GetNumberOfCorners () const
	Return the number of corner points for this cell type.

virtual const std::array< double, 3 > &	GetCornerParameter (int corner) const =0
	Return the coordinates of the reference element's corner vertex.

virtual int	GetNumberOfSideTypes () const =0
	Return the number of different side shapes of this cell type.

virtual std::pair< int, int >	GetSideRangeForType (int sideType) const =0
	Return the range of sides of the ii-th type, where ii is in [-2, this->GetNumberOfSideTypes()[.

int *	GetSideRangeForSideType (int sideType)
	A python-wrapped version of GetSideRangeForType.

virtual int	GetNumberOfSidesOfDimension (int dimension) const =0
	Return the number of boundaries this type of cell has of a given dimension.

virtual Shape	GetSideShape (int side) const =0
	For a given side, return its cell shape.

virtual int	GetSideTypeForShape (Shape s) const
	Return the side type index for the given shape (or -1).

virtual const std::vector< vtkIdType > &	GetSideConnectivity (int side) const =0
	Return the connectivity of the given side.

virtual vtkTypeFloat32Array *	GetReferencePoints () const =0
	Return a singleton array initialized with the reference-cell's corner point coordinates.

virtual vtkTypeInt32Array *	GetSideConnectivity () const =0
	Return a singleton array initialized with point-ids of each side's corners.

virtual vtkTypeInt32Array *	GetSideOffsetsAndShapes () const =0
	Return a singleton array initialized with 2-tuples of (offset, shape) values.

void	FillReferencePoints (vtkTypeFloat32Array *arr) const
	Fill the passed array with the parametric coordinates of all the element's corners.

void	FillSideConnectivity (vtkTypeInt32Array *arr) const
	Fill the passed array with the connectivity (point IDs) of all the element's sides.

void	FillSideOffsetsAndShapes (vtkTypeInt32Array *arr) const
	Fill the passed array with tuples of (1) offsets into the side-connectivity and (2) shapes for each type of side.


void	ShallowCopy (vtkCellMetadata *other) override

void	DeepCopy (vtkCellMetadata *other) override

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

vtkCellMetadata *	NewInstance () const

	vtkInheritanceHierarchyBaseMacro (vtkCellMetadata)

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

CellTypeId	Hash ()
	Return a hash of the cell type.

virtual bool	SetCellGrid (vtkCellGrid *parent)
	Set the vtkCellGrid holding DOF arrays required by this cell.

virtual vtkCellGrid *	GetCellGrid ()
	Return the parent vtkCellGrid that owns this instance (or nullptr).

virtual vtkIdType	GetNumberOfCells ()
	Return the number of cells of this type in the parent cell-grid object.

bool	Query (vtkCellGridQuery *query)
	Respond to a query on cells of this type.

virtual void	ShallowCopy (vtkCellMetadata *vtkNotUsed(other))
	Copy other into this instance (which must be of the same type).

virtual void	DeepCopy (vtkCellMetadata *vtkNotUsed(other))

vtkCellGridResponders *	GetCaches ()
	Return the set of registered responder types.

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

virtual void	DebugOn ()
	Turn debugging output on.

virtual void	DebugOff ()
	Turn debugging output off.

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

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

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

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

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

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)

vtkTypeBool	InvokeEvent (unsigned long event)

vtkTypeBool	InvokeEvent (const char *event)

std::string	GetObjectDescription () const override
	The object description printed in messages and PrintSelf output.

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

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

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

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.

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

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.

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

vtkTypeBool	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not.

virtual void	SetObjectName (const std::string &objectName)
	Set/get the name of this object for reporting purposes.

virtual std::string	GetObjectName () const
	Set/get the name of this object for reporting purposes.

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.

virtual std::string	GetObjectDescription () const
	The object description printed in messages and PrintSelf output.

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

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).

virtual void	Delete ()
	Delete a VTK object.

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

void	InitializeObjectBase ()

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

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

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

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

void	SetReferenceCount (int)
	Sets the reference count.

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

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

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

virtual bool	UsesGarbageCollector () const
	Indicate whether the class uses `vtkGarbageCollector` or not.

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

static vtkDGCell *	SafeDownCast (vtkObjectBase *o)

static int	GetShapeCornerCount (Shape shape)

static int	GetShapeDimension (Shape shape)

static vtkStringToken	GetShapeName (Shape shape)

static Shape	GetShapeEnum (vtkStringToken shapeName)
	Given a string description of a cell shape, return the DG equivalent enum.

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

static vtkCellMetadata *	SafeDownCast (vtkObjectBase *o)

template<typename Subclass >
static bool	RegisterType ()
	Register a subclass of vtkCellMetadata.

template<typename Subclass >
static vtkSmartPointer< Subclass >	NewInstance (vtkCellGrid *grid=nullptr)

static vtkSmartPointer< vtkCellMetadata >	NewInstance (vtkStringToken className, vtkCellGrid *grid=nullptr)

static std::unordered_set< vtkStringToken >	CellTypes ()

static vtkCellGridResponders *	GetResponders ()
	Return the set of registered responder types.

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.

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

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

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

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

static vtkTypeBool	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

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.

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).

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

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

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.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkDGCell ()

	~vtkDGCell () override

Protected Member Functions inherited from vtkCellMetadata
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkCellMetadata ()=default

	~vtkCellMetadata () 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.

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

virtual void	ObjectFinalize ()

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
Source	CellSpec
	The connectivity array specifying cells.

std::vector< Source >	SideSpecs
	The connectivity array(s) specifying sides.

Protected Attributes inherited from vtkCellMetadata
vtkCellGrid *	CellGrid { nullptr }

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

std::string	ObjectName

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

vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Static Protected Member Functions inherited from vtkCellMetadata
static ConstructorMap &	Constructors ()

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

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Detailed Description

Base class for a discontinuous Galerkin cells of all shapes.

This class exists to offer each shape's parameterization via a uniform API.

All DG cells have shapes that can be described by corner points in a reference (parametric) coordinate system. Sides (boundaries) of the element of any dimension can be fetched as offsets into the list of corners. You can also obtain a list of the coordinates in parametric space of all the corner points.

Tests:: vtkDGCell (Tests)

Definition at line 39 of file vtkDGCell.h.

Member Typedef Documentation

◆ Superclass

typedef vtkCellMetadata vtkDGCell::Superclass

Definition at line 98 of file vtkDGCell.h.

Member Enumeration Documentation

◆ Shape

enum vtkDGCell::Shape : int

All possible shapes for DG cells.

Enumerator
Vertex	A corner point.
Edge	A curve connecting two vertices.
Triangle	A three-cornered face bounded by 3 edges.
Quadrilateral	A four-cornered face bounded by 4 edges.
Tetrahedron	A four-cornered volume bounded by 4 triangular shapes.
Hexahedron	An eight-cornered volume; a quadrilateral prism.
Wedge	A volumetric, triangular prism.
Pyramid	A volumetric shape whose quadrilateral base attaches to a vertex.
None	A placeholder for an indeterminate or invalid shape.

Definition at line 43 of file vtkDGCell.h.

Constructor & Destructor Documentation

◆ vtkDGCell()

vtkDGCell::vtkDGCell ( )

protected

◆ ~vtkDGCell()

vtkDGCell::~vtkDGCell ( )

overrideprotected

Member Function Documentation

◆ IsTypeOf()

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

static

◆ IsA()

virtual vtkTypeBool vtkDGCell::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 vtkCellMetadata.

Reimplemented in vtkDeRhamCell, vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ SafeDownCast()

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

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkDGCell::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkCellMetadata.

Reimplemented in vtkDeRhamCell, vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ NewInstance()

vtkDGCell * vtkDGCell::NewInstance ( ) const

◆ vtkInheritanceHierarchyOverrideMacro()

vtkDGCell::vtkInheritanceHierarchyOverrideMacro ( vtkDGCell )

◆ PrintSelf()

void vtkDGCell::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 vtkCellMetadata.

Reimplemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetCellSpec()

Source & vtkDGCell::GetCellSpec ( )

inline

Provide access to the connectivity array used to define cells of this type.

Definition at line 103 of file vtkDGCell.h.

◆ GetSideSpecs()

std::vector< Source > & vtkDGCell::GetSideSpecs ( )

inline

Provide access to the (cellId,sideId)-arrays used to define side-cells of this type.

Definition at line 106 of file vtkDGCell.h.

◆ GetNumberOfCells()

vtkIdType vtkDGCell::GetNumberOfCells ( )

overridevirtual

Return the number of cells (and sides) of this type present in this cell grid.

Reimplemented from vtkCellMetadata.

◆ ShallowCopy()

void vtkDGCell::ShallowCopy ( vtkCellMetadata * other )

override

Copy cell-specific data from other into ourselves.

◆ DeepCopy()

void vtkDGCell::DeepCopy ( vtkCellMetadata * other )

override

Copy cell-specific data from other into ourselves.

◆ IsInside()

virtual bool vtkDGCell::IsInside	(	const vtkVector3d &	rst,
		double	tolerance = `1e-6`
	)

pure virtual

Return true if the parametric coordinates (rst) lie inside the reference cell or its closure and false otherwise.

The tolerance specifies a margin that should be included as part of the reference cell's interior to account for numerical imprecision.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetShapeCornerCount()

static int vtkDGCell::GetShapeCornerCount ( Shape shape )

static

◆ GetShapeDimension()

static int vtkDGCell::GetShapeDimension ( Shape shape )

static

◆ GetShapeName()

static vtkStringToken vtkDGCell::GetShapeName ( Shape shape )

static

◆ GetShapeEnum()

static Shape vtkDGCell::GetShapeEnum ( vtkStringToken shapeName )

static

Given a string description of a cell shape, return the DG equivalent enum.

Note that this also converts IOSS shape names to DG enums, so there are additional cases to handle spheres as points, springs as lines, etc.

◆ GetShape()

virtual Shape vtkDGCell::GetShape ( ) const

pure virtual

Return the topological shape of this cell or side type.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetDimension()

virtual int vtkDGCell::GetDimension ( ) const

inlinevirtual

Return the parametric dimension of this cell type (0, 1, 2, or 3).

Reimplemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

Definition at line 137 of file vtkDGCell.h.

◆ GetNumberOfCorners()

virtual int vtkDGCell::GetNumberOfCorners ( ) const

inlinevirtual

Return the number of corner points for this cell type.

Definition at line 140 of file vtkDGCell.h.

◆ GetCornerParameter()

virtual const std::array< double, 3 > & vtkDGCell::GetCornerParameter ( int corner ) const

pure virtual

Return the coordinates of the reference element's corner vertex.

Any well-formed element in world coordinates can be mapped to its reference element by transforming its corner points to these; this mapping is frequently used to visualize and analyze elements.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetNumberOfSideTypes()

virtual int vtkDGCell::GetNumberOfSideTypes ( ) const

pure virtual

Return the number of different side shapes of this cell type.

Example: a wedge has 4 side shapes: Quadrilateral, Triangle, Edge, and Vertex.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetSideRangeForType()

virtual std::pair< int, int > vtkDGCell::GetSideRangeForType ( int sideType ) const

pure virtual

Return the range of sides of the ii-th type, where ii is in [-2, this->GetNumberOfSideTypes()[.

The returned pair of integers is a half-open interval of side IDs. The difference between the returned values is the number of sides of sideType.

Values of ii 0 and above are for "strict" sides (i.e., sides whose dimension is less than the cell's dimension). If you pass ii = -2, this will return the total number of strict sides of all types. If you pass ii = -1, this will return an entry for the cell's "self" type [-1,0[.

Example: a tetrahedron will return the following:

for sideType -2 (all strict sides): [0, 14[
for sideType -1 (self): [-1, 0[
for sideType 0 (triangles): [0, 4[
for sideType 1 (edges): [4, 10[
for sideType 2 (verts): [10, 14[

Side types are ordered from highest dimension to lowest as ii increases. Note that it is possible to have multiple types of side that have the same dimension. For example, wedges and pyramids each have triangle and quadrilateral sides (of dimension 2, but of different types).

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetSideRangeForSideType()

int * vtkDGCell::GetSideRangeForSideType ( int sideType )

A python-wrapped version of GetSideRangeForType.

◆ GetNumberOfSidesOfDimension()

virtual int vtkDGCell::GetNumberOfSidesOfDimension ( int dimension ) const

pure virtual

Return the number of boundaries this type of cell has of a given dimension.

DG cells can be thought of as CW-complex cells; they are tuples of corner points which represent an open point set plus its closure decomposed into a union of open sets of lower dimension. For example, a hexahedron is an 8-tuple of corner points representing an underlying space shaped as an open, rectangular prism plus six 4-tuples representing its quadrilateral faces, plus twelve 2-tuples representing its edges, plus 8 1-tuples representing its corners. Thus, a hexahedron has 6 + 12 + 8 = 26 sides (plus its interior).

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetSideShape()

virtual Shape vtkDGCell::GetSideShape ( int side ) const

pure virtual

For a given side, return its cell shape.

The sides of a vtkDGCell are always ordered from highest dimension to lowest. For example, a hexahedron's quadrilateral sides are numbered 0–5, its line sides are numbered 6–17, and its corner point sides are numbered 18–25. Sometimes, the interior of the element is considered a side labeled -1.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetSideTypeForShape()

virtual int vtkDGCell::GetSideTypeForShape ( Shape s ) const

virtual

Return the side type index for the given shape (or -1).

This method simply loops over the cell's side types until it finds one of the proper shape.

◆ GetSideConnectivity() [1/2]

virtual const std::vector< vtkIdType > & vtkDGCell::GetSideConnectivity ( int side ) const

pure virtual

Return the connectivity of the given side.

The side connectivity is a vector holding the indexes of corner-points of the side into the connectivity vector of this cell.

Passing a side of -1 should return the connectivity of the cell's interior (a vector of the counting numbers from 0 to this->GetNumberOfCorners()). This feature is used when rendering cells of dimension 2 or lower.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetReferencePoints()

virtual vtkTypeFloat32Array * vtkDGCell::GetReferencePoints ( ) const

pure virtual

Return a singleton array initialized with the reference-cell's corner point coordinates.

When implementing a subclass, call FillReferencePoints() in your override. This should always return the same vtkTypeFloat32Array each time so that the array is only uploaded to the GPU once.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetSideConnectivity() [2/2]

virtual vtkTypeInt32Array * vtkDGCell::GetSideConnectivity ( ) const

pure virtual

Return a singleton array initialized with point-ids of each side's corners.

To make use of this array, you should also call GetSideOffsetsAndShapes() and GetShapeCornerCount().

When implementing a subclass, call FillSideConnectivity() in your override. This should always return the same vtkTypeInt32Array each time so that the array is only uploaded to the GPU once.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ GetSideOffsetsAndShapes()

virtual vtkTypeInt32Array * vtkDGCell::GetSideOffsetsAndShapes ( ) const

pure virtual

Return a singleton array initialized with 2-tuples of (offset, shape) values.

When implementing a subclass, call FillSideOffsetsAndShapes() in your override. This should always return the same vtkTypeInt32Array each time so that the array is only uploaded to the GPU once.

Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.

◆ FillReferencePoints()

void vtkDGCell::FillReferencePoints ( vtkTypeFloat32Array * arr ) const

Fill the passed array with the parametric coordinates of all the element's corners.

◆ FillSideConnectivity()

void vtkDGCell::FillSideConnectivity ( vtkTypeInt32Array * arr ) const

Fill the passed array with the connectivity (point IDs) of all the element's sides.

◆ FillSideOffsetsAndShapes()

void vtkDGCell::FillSideOffsetsAndShapes ( vtkTypeInt32Array * arr ) const

Fill the passed array with tuples of (1) offsets into the side-connectivity and (2) shapes for each type of side.

Note that the final tuple contains the total size of the offset array and a shape corresponding to the element itself.

Each element's vertex side-connectivity (the penultimate offset) can also be used as the connectivity for the element's connectivity.

Simple example: a vtkDGTri has 3 tuples:

Complex example: a vtkDGWedge has 5 tuples:

Note that the wedge has multiple 2-d sides (both quadilaterals and triangles).

Member Data Documentation

◆ CellSpec

Source vtkDGCell::CellSpec

protected

The connectivity array specifying cells.

There may be only one Source for all the cells of one type in a vtkCellGrid.

Definition at line 277 of file vtkDGCell.h.

◆ SideSpecs

std::vector<Source> vtkDGCell::SideSpecs

protected

The connectivity array(s) specifying sides.

There may be zero or more Source instances for sides in a vtkCellGrid.

Definition at line 280 of file vtkDGCell.h.

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

Filters/CellGrid/vtkDGCell.h

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Member Enumeration Documentation

◆ Shape

Constructor & Destructor Documentation

◆ vtkDGCell()

◆ ~vtkDGCell()

Member Function Documentation

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ vtkInheritanceHierarchyOverrideMacro()

◆ PrintSelf()

◆ GetCellSpec()

◆ GetSideSpecs()

◆ GetNumberOfCells()

◆ ShallowCopy()

◆ DeepCopy()

◆ IsInside()

◆ GetShapeCornerCount()

◆ GetShapeDimension()

◆ GetShapeName()

◆ GetShapeEnum()

◆ GetShape()

◆ GetDimension()

◆ GetNumberOfCorners()

◆ GetCornerParameter()

◆ GetNumberOfSideTypes()

◆ GetSideRangeForType()

◆ GetSideRangeForSideType()

◆ GetNumberOfSidesOfDimension()

◆ GetSideShape()

◆ GetSideTypeForShape()

◆ GetSideConnectivity() [1/2]

◆ GetReferencePoints()

◆ GetSideConnectivity() [2/2]

◆ GetSideOffsetsAndShapes()

◆ FillReferencePoints()

◆ FillSideConnectivity()

◆ FillSideOffsetsAndShapes()

Member Data Documentation

◆ CellSpec

◆ SideSpecs