VTK
9.4.20241013
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Base class for a discontinuous Galerkin cells of all shapes. More...
#include <vtkDGCell.h>
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... | |
using | OperatorMap = std::unordered_map< vtkStringToken, std::unordered_map< vtkStringToken, std::unordered_map< vtkStringToken, std::unordered_map< int, std::unordered_map< vtkStringToken, vtkDGOperatorEntry > > > > > |
A map holding operators that evaluate DG cells. | |
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. | |
const Source & | GetCellSource (int sideType=-1) const |
Provide access to cell specifications in a uniform way (for both cells and sides). | |
Source & | GetCellSource (int sideType=-1) |
std::size_t | GetNumberOfCellSources () const |
Python-accessible method to identify number of cell sources. | |
vtkDataArray * | GetCellSourceConnectivity (int sideType=-1) const |
Python-accessible methods to fetch cell source information. | |
vtkDataArray * | GetCellSourceNodalGhostMarks (int sideType=-1) const |
vtkIdType | GetCellSourceOffset (int sideType=-1) const |
bool | GetCellSourceIsBlanked (int sideType=-1) const |
Shape | GetCellSourceShape (int sideType=-1) const |
int | GetCellSourceSideType (int sideType=-1) const |
int | GetCellSourceSelectionType (int sideType=-1) const |
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 vtkVector3d | GetParametricCenterOfSide (int sideId) const |
Return the parametric center of a cell or its side. | |
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 std::pair< int, int > | GetSideRangeForDimension (int dimension) const |
Return the range of side IDs for all sides of the given dimension. | |
int * | GetSideRangeForSideDimension (int sideDimension) |
A python-wrapped version of GetSideRangeForDimension. | |
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 const std::vector< vtkIdType > & | GetSidesOfSide (int side) const =0 |
Return a vector of side IDs given an input side ID. | |
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. | |
vtkCellGridResponders::TagSet | GetAttributeTags (vtkCellAttribute *attribute, bool inheritedTypes=false) |
A convenience function to fetch attribute-calculator tags for an attribute. | |
vtkDGOperatorEntry | GetOperatorEntry (vtkStringToken opName, const vtkCellAttribute::CellTypeInfo &attributeInfo) |
Return an operator entry. | |
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 OperatorMap & | GetOperators () |
Return a map of operators registered for vtkDGCell and its subclasses. | |
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 void | ClearResponders () |
Clear all of the registered responders. | |
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 () |
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.
Definition at line 43 of file vtkDGCell.h.
using vtkDGCell::OperatorMap = std::unordered_map<vtkStringToken, std::unordered_map<vtkStringToken, std::unordered_map<vtkStringToken, std::unordered_map<int, std::unordered_map<vtkStringToken, vtkDGOperatorEntry> >> >> |
A map holding operators that evaluate DG cells.
Operators currently include "Basis" and "BasisGradient" to evaluate the polynomial basis functions for a cell-attribute. But in the future this may also include operators such as "Curl", "Divergence", and higher-order derivative operators.
Besides operators being indexed on their purpose (the operator name), they are indexed on the function space in which they live (such as the space of nodal functions, edge-centered functions, face-centered functions, constant functions, etc.), the polynomial basis inside the function space and its order are also indexed.
vtkDGInterpolateCalculator and other query-responders should use this map along with vtkDGOperation to perform interpolation or other work requiring basis-function computation.
Definition at line 62 of file vtkDGCell.h.
typedef vtkCellMetadata vtkDGCell::Superclass |
Definition at line 150 of file vtkDGCell.h.
enum vtkDGCell::Shape : int |
All possible shapes for DG cells.
Definition at line 70 of file vtkDGCell.h.
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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.
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Reimplemented from vtkCellMetadata.
Reimplemented in vtkDeRhamCell, vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.
vtkDGCell * vtkDGCell::NewInstance | ( | ) | const |
vtkDGCell::vtkInheritanceHierarchyOverrideMacro | ( | vtkDGCell | ) |
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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.
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Provide access to the connectivity array used to define cells of this type.
Definition at line 155 of file vtkDGCell.h.
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Provide access to the (cellId,sideId)-arrays used to define side-cells of this type.
Definition at line 158 of file vtkDGCell.h.
const Source & vtkDGCell::GetCellSource | ( | int | sideType = -1 | ) | const |
Provide access to cell specifications in a uniform way (for both cells and sides).
Source & vtkDGCell::GetCellSource | ( | int | sideType = -1 | ) |
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Python-accessible method to identify number of cell sources.
Definition at line 165 of file vtkDGCell.h.
vtkDataArray * vtkDGCell::GetCellSourceConnectivity | ( | int | sideType = -1 | ) | const |
Python-accessible methods to fetch cell source information.
In C++, you should simply call GetCellSource(sideType) and access the ivar.
vtkDataArray * vtkDGCell::GetCellSourceNodalGhostMarks | ( | int | sideType = -1 | ) | const |
vtkIdType vtkDGCell::GetCellSourceOffset | ( | int | sideType = -1 | ) | const |
bool vtkDGCell::GetCellSourceIsBlanked | ( | int | sideType = -1 | ) | const |
Shape vtkDGCell::GetCellSourceShape | ( | int | sideType = -1 | ) | const |
int vtkDGCell::GetCellSourceSideType | ( | int | sideType = -1 | ) | const |
int vtkDGCell::GetCellSourceSelectionType | ( | int | sideType = -1 | ) | const |
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Return the number of cells (and sides) of this type present in this cell grid.
Reimplemented from vtkCellMetadata.
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Copy cell-specific data from other into ourselves.
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Copy cell-specific data from other into ourselves.
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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.
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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.
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Return the number of corner points for this cell type.
Definition at line 210 of file vtkDGCell.h.
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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.
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Return the parametric center of a cell or its side.
Pass -1 for side if you want the cell's center. Otherwise, pass the side ID.
This method simply averages corner-point coordinates. It is not fast, since it averages values each time it is called. If you need to re-use this information, you are responsible for caching it locally.
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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:
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.
int * vtkDGCell::GetSideRangeForSideType | ( | int | sideType | ) |
A python-wrapped version of GetSideRangeForType.
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Return the range of side IDs for all sides of the given dimension.
An invalid range (side.first > side.second) is returned if no sides of the given dimension exist.
int * vtkDGCell::GetSideRangeForSideDimension | ( | int | sideDimension | ) |
A python-wrapped version of GetSideRangeForDimension.
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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).
Passing a dimension of -1 will return 1 side; DG cells use a -1-dimensional side to indicate an entire cell should be treated as a side. This is useful for subsetting cells without re-writing the arrays holding connectivity and field values; it also allows a vtkDGCell instance to hold both sides of input cells mixed with a subset of the input cells. For example, given 3 triangles as input, generating an output with 1 input triangle unchanged and edges or vertices from the other two triangles requires per-cell blanking or subsetting of cells.
Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.
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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.
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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.
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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.
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Return a vector of side IDs given an input side ID.
Passing a side of -1 will return the sides of the element itself. The returned values are not corner-point IDs; they are side IDs. You can call GetSideConnectivity on each entry of the returned vector to obtain corner-point IDs.
Implemented in vtkDGEdge, vtkDGHex, vtkDGPyr, vtkDGQuad, vtkDGTet, vtkDGTri, vtkDGVert, and vtkDGWdg.
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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.
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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.
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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.
void vtkDGCell::FillReferencePoints | ( | vtkTypeFloat32Array * | arr | ) | const |
Fill the passed array with the parametric coordinates of all the element's corners.
void vtkDGCell::FillSideConnectivity | ( | vtkTypeInt32Array * | arr | ) | const |
Fill the passed array with the connectivity (point IDs) of all the element's sides.
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).
vtkCellGridResponders::TagSet vtkDGCell::GetAttributeTags | ( | vtkCellAttribute * | attribute, |
bool | inheritedTypes = false |
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) |
A convenience function to fetch attribute-calculator tags for an attribute.
Query-responders are ultimately responsible for providing tags when fetching a attribute-calculator, but this method is a convenience since many responders will follow the same pattern.
Pass inheritedTypes as true when passing the result to vtkCellGridResponders::AttributeCalculator() (so that any responder which applies to an inherited class will be used to find a calculator). Pass inheritedTypes as false when using the result to register a calculator (so that the calculator is not made available to parent classes of this cell type).
vtkDGOperatorEntry vtkDGCell::GetOperatorEntry | ( | vtkStringToken | opName, |
const vtkCellAttribute::CellTypeInfo & | attributeInfo | ||
) |
Return an operator entry.
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static |
Return a map of operators registered for vtkDGCell and its subclasses.
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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 406 of file vtkDGCell.h.
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protected |
The connectivity array(s) specifying sides.
There may be zero or more Source instances for sides in a vtkCellGrid.
Definition at line 409 of file vtkDGCell.h.