extract geometry from an unstructured grid More...

#include <vtkUnstructuredGridGeometryFilter.h>

Inheritance diagram for vtkUnstructuredGridGeometryFilter:

Collaboration diagram for vtkUnstructuredGridGeometryFilter:

Public Types
typedef vtkUnstructuredGridAlgorithm	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkUnstructuredGridGeometryFilter *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
void	CreateDefaultLocator ()
unsigned long	GetMTime ()

virtual void	SetPointClipping (int)
virtual int	GetPointClipping ()
virtual void	PointClippingOn ()
virtual void	PointClippingOff ()

virtual void	SetCellClipping (int)
virtual int	GetCellClipping ()
virtual void	CellClippingOn ()
virtual void	CellClippingOff ()

virtual void	SetExtentClipping (int)
virtual int	GetExtentClipping ()
virtual void	ExtentClippingOn ()
virtual void	ExtentClippingOff ()

virtual void	SetPointMinimum (vtkIdType)
virtual vtkIdType	GetPointMinimum ()

virtual void	SetPointMaximum (vtkIdType)
virtual vtkIdType	GetPointMaximum ()

virtual void	SetCellMinimum (vtkIdType)
virtual vtkIdType	GetCellMinimum ()

virtual void	SetCellMaximum (vtkIdType)
virtual vtkIdType	GetCellMaximum ()

void	SetExtent (double xMin, double xMax, double yMin, double yMax, double zMin, double zMax)

void	SetExtent (double extent[6])
double *	GetExtent ()

virtual void	SetMerging (int)
virtual int	GetMerging ()
virtual void	MergingOn ()
virtual void	MergingOff ()

virtual void	SetPassThroughCellIds (int)
virtual int	GetPassThroughCellIds ()
virtual void	PassThroughCellIdsOn ()
virtual void	PassThroughCellIdsOff ()
virtual void	SetPassThroughPointIds (int)
virtual int	GetPassThroughPointIds ()
virtual void	PassThroughPointIdsOn ()
virtual void	PassThroughPointIdsOff ()

virtual void	SetOriginalCellIdsName (const char *)
virtual const char *	GetOriginalCellIdsName ()
virtual void	SetOriginalPointIdsName (const char *)
virtual const char *	GetOriginalPointIdsName ()

void	SetLocator (vtkIncrementalPointLocator *locator)
virtual vtkIncrementalPointLocator *	GetLocator ()
Static Public Member Functions
static vtkUnstructuredGridGeometryFilter *	New ()
static int	IsTypeOf (const char *type)
static vtkUnstructuredGridGeometryFilter *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkUnstructuredGridGeometryFilter ()
	~vtkUnstructuredGridGeometryFilter ()
virtual int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )
virtual int	FillInputPortInformation (int port, vtkInformation *info)
int	RequestUpdateExtent (vtkInformation , vtkInformationVector , vtkInformationVector )
Protected Attributes
vtkIdType	PointMaximum
vtkIdType	PointMinimum
vtkIdType	CellMinimum
vtkIdType	CellMaximum
double	Extent [6]
int	PointClipping
int	CellClipping
int	ExtentClipping
int	PassThroughCellIds
int	PassThroughPointIds
char *	OriginalCellIdsName
char *	OriginalPointIdsName
int	Merging
vtkIncrementalPointLocator *	Locator
vtkHashTableOfSurfels *	HashTable

Detailed Description

extract geometry from an unstructured grid

vtkUnstructuredGridGeometryFilter is a filter that extracts geometry (and associated data) from an unstructured grid. It differs from vtkGeometryFilter by not tessellating higher order faces: 2D faces of quadratic 3D cells will be quadratic. A quadratic edge is extracted as a quadratic edge. For that purpose, the output of this filter is an unstructured grid, not a polydata. Also, the face of a voxel is a pixel, not a quad. Geometry is obtained as follows: all 0D, 1D, and 2D cells are extracted. All 2D faces that are used by only one 3D cell (i.e., boundary faces) are extracted. It also is possible to specify conditions on point ids, cell ids, and on bounding box (referred to as "Extent") to control the extraction process.

Warning:: When vtkUnstructuredGridGeometryFilter extracts cells (or boundaries of cells) it will (by default) merge duplicate vertices. This may cause problems in some cases. Turn merging off to prevent this from occurring.

See also:: vtkGeometryFilter

Tests:: vtkUnstructuredGridGeometryFilter (Tests)

Definition at line 52 of file vtkUnstructuredGridGeometryFilter.h.

Member Typedef Documentation

typedef vtkUnstructuredGridAlgorithm vtkUnstructuredGridGeometryFilter::Superclass

Reimplemented from vtkUnstructuredGridAlgorithm.

Definition at line 56 of file vtkUnstructuredGridGeometryFilter.h.

Constructor & Destructor Documentation

vtkUnstructuredGridGeometryFilter::vtkUnstructuredGridGeometryFilter ( ) [protected]

vtkUnstructuredGridGeometryFilter::~vtkUnstructuredGridGeometryFilter ( ) [protected]

Member Function Documentation

static vtkUnstructuredGridGeometryFilter* vtkUnstructuredGridGeometryFilter::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkUnstructuredGridAlgorithm.

static int vtkUnstructuredGridGeometryFilter::IsTypeOf ( const char * name ) [static]

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

Reimplemented from vtkUnstructuredGridAlgorithm.

virtual int vtkUnstructuredGridGeometryFilter::IsA ( const char * name ) [virtual]

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

Reimplemented from vtkUnstructuredGridAlgorithm.

static vtkUnstructuredGridGeometryFilter* vtkUnstructuredGridGeometryFilter::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkUnstructuredGridAlgorithm.

virtual vtkObjectBase* vtkUnstructuredGridGeometryFilter::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkUnstructuredGridAlgorithm.

vtkUnstructuredGridGeometryFilter* vtkUnstructuredGridGeometryFilter::NewInstance ( ) const

Reimplemented from vtkUnstructuredGridAlgorithm.

void vtkUnstructuredGridGeometryFilter::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)		`[virtual]`

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

Reimplemented from vtkUnstructuredGridAlgorithm.

virtual void vtkUnstructuredGridGeometryFilter::SetPointClipping ( int ) [virtual]

Turn on/off selection of geometry by point id.

virtual int vtkUnstructuredGridGeometryFilter::GetPointClipping ( ) [virtual]

Turn on/off selection of geometry by point id.

virtual void vtkUnstructuredGridGeometryFilter::PointClippingOn ( ) [virtual]

Turn on/off selection of geometry by point id.

virtual void vtkUnstructuredGridGeometryFilter::PointClippingOff ( ) [virtual]

Turn on/off selection of geometry by point id.

virtual void vtkUnstructuredGridGeometryFilter::SetCellClipping ( int ) [virtual]

Turn on/off selection of geometry by cell id.

virtual int vtkUnstructuredGridGeometryFilter::GetCellClipping ( ) [virtual]

Turn on/off selection of geometry by cell id.

virtual void vtkUnstructuredGridGeometryFilter::CellClippingOn ( ) [virtual]

Turn on/off selection of geometry by cell id.

virtual void vtkUnstructuredGridGeometryFilter::CellClippingOff ( ) [virtual]

Turn on/off selection of geometry by cell id.

virtual void vtkUnstructuredGridGeometryFilter::SetExtentClipping ( int ) [virtual]

Turn on/off selection of geometry via bounding box.

virtual int vtkUnstructuredGridGeometryFilter::GetExtentClipping ( ) [virtual]

Turn on/off selection of geometry via bounding box.

virtual void vtkUnstructuredGridGeometryFilter::ExtentClippingOn ( ) [virtual]

Turn on/off selection of geometry via bounding box.

virtual void vtkUnstructuredGridGeometryFilter::ExtentClippingOff ( ) [virtual]

Turn on/off selection of geometry via bounding box.

virtual void vtkUnstructuredGridGeometryFilter::SetPointMinimum ( vtkIdType ) [virtual]

Specify the minimum point id for point id selection.

virtual vtkIdType vtkUnstructuredGridGeometryFilter::GetPointMinimum ( ) [virtual]

Specify the minimum point id for point id selection.

virtual void vtkUnstructuredGridGeometryFilter::SetPointMaximum ( vtkIdType ) [virtual]

Specify the maximum point id for point id selection.

virtual vtkIdType vtkUnstructuredGridGeometryFilter::GetPointMaximum ( ) [virtual]

Specify the maximum point id for point id selection.

virtual void vtkUnstructuredGridGeometryFilter::SetCellMinimum ( vtkIdType ) [virtual]

Specify the minimum cell id for point id selection.

virtual vtkIdType vtkUnstructuredGridGeometryFilter::GetCellMinimum ( ) [virtual]

Specify the minimum cell id for point id selection.

virtual void vtkUnstructuredGridGeometryFilter::SetCellMaximum ( vtkIdType ) [virtual]

Specify the maximum cell id for point id selection.

virtual vtkIdType vtkUnstructuredGridGeometryFilter::GetCellMaximum ( ) [virtual]

Specify the maximum cell id for point id selection.

void vtkUnstructuredGridGeometryFilter::SetExtent	(	double	xMin,
		double	xMax,
		double	yMin,
		double	yMax,
		double	zMin,
		double	zMax
	)

Specify a (xmin,xmax, ymin,ymax, zmin,zmax) bounding box to clip data.

void vtkUnstructuredGridGeometryFilter::SetExtent ( double extent[6] )

Set / get a (xmin,xmax, ymin,ymax, zmin,zmax) bounding box to clip data.

double* vtkUnstructuredGridGeometryFilter::GetExtent ( ) [inline]

Set / get a (xmin,xmax, ymin,ymax, zmin,zmax) bounding box to clip data.

Definition at line 115 of file vtkUnstructuredGridGeometryFilter.h.

virtual void vtkUnstructuredGridGeometryFilter::SetMerging ( int ) [virtual]

Turn on/off merging of coincident points. Note that is merging is on, points with different point attributes (e.g., normals) are merged, which may cause rendering artifacts.

virtual int vtkUnstructuredGridGeometryFilter::GetMerging ( ) [virtual]

Turn on/off merging of coincident points. Note that is merging is on, points with different point attributes (e.g., normals) are merged, which may cause rendering artifacts.

virtual void vtkUnstructuredGridGeometryFilter::MergingOn ( ) [virtual]

Turn on/off merging of coincident points. Note that is merging is on, points with different point attributes (e.g., normals) are merged, which may cause rendering artifacts.

virtual void vtkUnstructuredGridGeometryFilter::MergingOff ( ) [virtual]

Turn on/off merging of coincident points. Note that is merging is on, points with different point attributes (e.g., normals) are merged, which may cause rendering artifacts.

virtual void vtkUnstructuredGridGeometryFilter::SetPassThroughCellIds ( int ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual int vtkUnstructuredGridGeometryFilter::GetPassThroughCellIds ( ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual void vtkUnstructuredGridGeometryFilter::PassThroughCellIdsOn ( ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual void vtkUnstructuredGridGeometryFilter::PassThroughCellIdsOff ( ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual void vtkUnstructuredGridGeometryFilter::SetPassThroughPointIds ( int ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual int vtkUnstructuredGridGeometryFilter::GetPassThroughPointIds ( ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual void vtkUnstructuredGridGeometryFilter::PassThroughPointIdsOn ( ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual void vtkUnstructuredGridGeometryFilter::PassThroughPointIdsOff ( ) [virtual]

If on, the output polygonal dataset will have a celldata array that holds the cell index of the original 3D cell that produced each output cell. This is useful for cell picking. The default is off to conserve memory. Note that PassThroughCellIds will be ignored if UseStrips is on, since in that case each tringle strip can represent more than on of the input cells.

virtual void vtkUnstructuredGridGeometryFilter::SetOriginalCellIdsName ( const char * ) [virtual]

If PassThroughCellIds or PassThroughPointIds is on, then these ivars control the name given to the field in which the ids are written into. If set to NULL, then vtkOriginalCellIds or vtkOriginalPointIds (the default) is used, respectively.

virtual const char* vtkUnstructuredGridGeometryFilter::GetOriginalCellIdsName ( ) [inline, virtual]

If PassThroughCellIds or PassThroughPointIds is on, then these ivars control the name given to the field in which the ids are written into. If set to NULL, then vtkOriginalCellIds or vtkOriginalPointIds (the default) is used, respectively.

Definition at line 148 of file vtkUnstructuredGridGeometryFilter.h.

virtual void vtkUnstructuredGridGeometryFilter::SetOriginalPointIdsName ( const char * ) [virtual]

If PassThroughCellIds or PassThroughPointIds is on, then these ivars control the name given to the field in which the ids are written into. If set to NULL, then vtkOriginalCellIds or vtkOriginalPointIds (the default) is used, respectively.

virtual const char* vtkUnstructuredGridGeometryFilter::GetOriginalPointIdsName ( ) [inline, virtual]

If PassThroughCellIds or PassThroughPointIds is on, then these ivars control the name given to the field in which the ids are written into. If set to NULL, then vtkOriginalCellIds or vtkOriginalPointIds (the default) is used, respectively.

Definition at line 153 of file vtkUnstructuredGridGeometryFilter.h.

void vtkUnstructuredGridGeometryFilter::SetLocator ( vtkIncrementalPointLocator * locator )

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

virtual vtkIncrementalPointLocator* vtkUnstructuredGridGeometryFilter::GetLocator ( ) [virtual]

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

void vtkUnstructuredGridGeometryFilter::CreateDefaultLocator ( )

Create default locator. Used to create one when none is specified.

unsigned long vtkUnstructuredGridGeometryFilter::GetMTime ( ) [virtual]

Return the MTime also considering the locator.

Reimplemented from vtkObject.

virtual int vtkUnstructuredGridGeometryFilter::RequestData	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector
	)		`[protected, virtual]`

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

Reimplemented from vtkUnstructuredGridAlgorithm.

virtual int vtkUnstructuredGridGeometryFilter::FillInputPortInformation	(	int	port,
		vtkInformation *	info
	)		`[protected, virtual]`

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

Reimplemented from vtkUnstructuredGridAlgorithm.