clip an unstructured grid More...

#include <vtkBoxClipDataSet.h>

Inheritance diagram for vtkBoxClipDataSet:

Collaboration diagram for vtkBoxClipDataSet:

Public Types
typedef vtkUnstructuredGridAlgorithm	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkBoxClipDataSet *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
void	CreateDefaultLocator ()
unsigned long	GetMTime ()
void	MinEdgeF (const unsigned int id_v, const vtkIdType cellIds, unsigned int *edgF)
void	PyramidToTetra (const vtkIdType pyramId, const vtkIdType cellIds, vtkCellArray *newCellArray)
void	WedgeToTetra (const vtkIdType wedgeId, const vtkIdType cellIds, vtkCellArray *newCellArray)
void	CellGrid (vtkIdType typeobj, vtkIdType npts, const vtkIdType cellIds, vtkCellArray newCellArray)
void	CreateTetra (vtkIdType npts, const vtkIdType cellIds, vtkCellArray newCellArray)
void	ClipBox (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData outCD)
void	ClipHexahedron (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData outCD)
void	ClipBoxInOut (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)
void	ClipHexahedronInOut (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)
void	ClipBox2D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData outCD)
void	ClipBoxInOut2D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)
void	ClipHexahedron2D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData outCD)
void	ClipHexahedronInOut2D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray tets, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)
void	ClipBox1D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray lines, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData outCD)
void	ClipBoxInOut1D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray lines, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)
void	ClipHexahedron1D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray lines, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData outCD)
void	ClipHexahedronInOut1D (vtkPoints newPoints, vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray lines, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)
void	ClipBox0D (vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray verts, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData *outCD)
void	ClipBoxInOut0D (vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray *verts, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)
void	ClipHexahedron0D (vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray verts, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData *outCD)
void	ClipHexahedronInOut0D (vtkGenericCell cell, vtkIncrementalPointLocator locator, vtkCellArray *verts, vtkPointData inPD, vtkPointData outPD, vtkCellData inCD, vtkIdType cellId, vtkCellData **outCD)

void	SetBoxClip (double xmin, double xmax, double ymin, double ymax, double zmin, double zmax)
void	SetBoxClip (const double n0, const double o0, const double n1, const double o1, const double n2, const double o2, const double n3, const double o3, const double n4, const double o4, const double n5, const double o5)

virtual void	SetGenerateClipScalars (int)
virtual int	GetGenerateClipScalars ()
virtual void	GenerateClipScalarsOn ()
virtual void	GenerateClipScalarsOff ()

virtual void	SetGenerateClippedOutput (int)
virtual int	GetGenerateClippedOutput ()
virtual void	GenerateClippedOutputOn ()
virtual void	GenerateClippedOutputOff ()

vtkUnstructuredGrid *	GetClippedOutput ()
virtual int	GetNumberOfOutputs ()

void	SetLocator (vtkIncrementalPointLocator *locator)
virtual vtkIncrementalPointLocator *	GetLocator ()

virtual unsigned int	GetOrientation ()
virtual void	SetOrientation (unsigned int)
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkBoxClipDataSet *	SafeDownCast (vtkObjectBase *o)
static vtkBoxClipDataSet *	New ()
static void	InterpolateEdge (vtkDataSetAttributes *attributes, vtkIdType toId, vtkIdType fromId1, vtkIdType fromId2, double t)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkBoxClipDataSet ()
	~vtkBoxClipDataSet ()
virtual int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )
virtual int	FillInputPortInformation (int port, vtkInformation *info)
Protected Attributes
vtkIncrementalPointLocator *	Locator
int	GenerateClipScalars
int	GenerateClippedOutput
double	BoundBoxClip [3][2]
unsigned int	Orientation
double	PlaneNormal [6][3]
double	PlanePoint [6][3]

Detailed Description

clip an unstructured grid

Clipping means that is actually 'cuts' through the cells of the dataset, returning tetrahedral cells inside of the box. The output of this filter is an unstructured grid.

This filter can be configured to compute a second output. The second output is the part of the cell that is clipped away. Set the GenerateClippedData boolean on if you wish to access this output data.

The vtkBoxClipDataSet will triangulate all types of 3D cells (i.e, create tetrahedra). This is necessary to preserve compatibility across face neighbors.

To use this filter,you can decide if you will be clipping with a box or a hexahedral box. 1) Set orientation if(SetOrientation(0)): box (parallel with coordinate axis) SetBoxClip(xmin,xmax,ymin,ymax,zmin,zmax) if(SetOrientation(1)): hexahedral box (Default) SetBoxClip(n[0],o[0],n[1],o[1],n[2],o[2],n[3],o[3],n[4],o[4],n[5],o[5]) PlaneNormal[] normal of each plane PlanePoint[] point on the plane 2) Apply the GenerateClipScalarsOn() 3) Execute clipping Update();

Tests:: vtkBoxClipDataSet (Tests)

Definition at line 67 of file vtkBoxClipDataSet.h.

Member Typedef Documentation

typedef vtkUnstructuredGridAlgorithm vtkBoxClipDataSet::Superclass

Reimplemented from vtkUnstructuredGridAlgorithm.

Definition at line 70 of file vtkBoxClipDataSet.h.

Constructor & Destructor Documentation

vtkBoxClipDataSet::vtkBoxClipDataSet ( ) [protected]

vtkBoxClipDataSet::~vtkBoxClipDataSet ( ) [protected]

Member Function Documentation

static int vtkBoxClipDataSet::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 vtkBoxClipDataSet::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 vtkBoxClipDataSet* vtkBoxClipDataSet::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkUnstructuredGridAlgorithm.

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

Reimplemented from vtkUnstructuredGridAlgorithm.

vtkBoxClipDataSet* vtkBoxClipDataSet::NewInstance ( ) const

Reimplemented from vtkUnstructuredGridAlgorithm.

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

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

Reimplemented from vtkUnstructuredGridAlgorithm.

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

Constructor of the clipping box. The initial box is (0,1,0,1,0,1). The hexahedral box and the parallel box parameters are set to match this box.

Reimplemented from vtkUnstructuredGridAlgorithm.

void vtkBoxClipDataSet::SetBoxClip	(	double	xmin,
		double	xmax,
		double	ymin,
		double	ymax,
		double	zmin,
		double	zmax
	)

Specify the Box with which to perform the clipping. If the box is not parallel to axis, you need to especify normal vector of each plane and a point on the plane.

void vtkBoxClipDataSet::SetBoxClip	(	const double *	n0,
		const double *	o0,
		const double *	n1,
		const double *	o1,
		const double *	n2,
		const double *	o2,
		const double *	n3,
		const double *	o3,
		const double *	n4,
		const double *	o4,
		const double *	n5,
		const double *	o5
	)

Specify the Box with which to perform the clipping. If the box is not parallel to axis, you need to especify normal vector of each plane and a point on the plane.

virtual void vtkBoxClipDataSet::SetGenerateClipScalars ( int ) [virtual]

If this flag is enabled, then the output scalar values will be interpolated, and not the input scalar data.

virtual int vtkBoxClipDataSet::GetGenerateClipScalars ( ) [virtual]

If this flag is enabled, then the output scalar values will be interpolated, and not the input scalar data.

virtual void vtkBoxClipDataSet::GenerateClipScalarsOn ( ) [virtual]

If this flag is enabled, then the output scalar values will be interpolated, and not the input scalar data.

virtual void vtkBoxClipDataSet::GenerateClipScalarsOff ( ) [virtual]

If this flag is enabled, then the output scalar values will be interpolated, and not the input scalar data.

virtual void vtkBoxClipDataSet::SetGenerateClippedOutput ( int ) [virtual]

Control whether a second output is generated. The second output contains the polygonal data that's been clipped away.

virtual int vtkBoxClipDataSet::GetGenerateClippedOutput ( ) [virtual]

Control whether a second output is generated. The second output contains the polygonal data that's been clipped away.

virtual void vtkBoxClipDataSet::GenerateClippedOutputOn ( ) [virtual]

Control whether a second output is generated. The second output contains the polygonal data that's been clipped away.

virtual void vtkBoxClipDataSet::GenerateClippedOutputOff ( ) [virtual]

Control whether a second output is generated. The second output contains the polygonal data that's been clipped away.

vtkUnstructuredGrid* vtkBoxClipDataSet::GetClippedOutput ( )

Set the tolerance for merging clip intersection points that are near the vertices of cells. This tolerance is used to prevent the generation of degenerate primitives. Note that only 3D cells actually use this instance variable. vtkSetClampMacro(MergeTolerance,double,0.0001,0.25); vtkGetMacro(MergeTolerance,double);

Return the Clipped output.

virtual int vtkBoxClipDataSet::GetNumberOfOutputs ( ) [virtual]

Set the tolerance for merging clip intersection points that are near the vertices of cells. This tolerance is used to prevent the generation of degenerate primitives. Note that only 3D cells actually use this instance variable. vtkSetClampMacro(MergeTolerance,double,0.0001,0.25); vtkGetMacro(MergeTolerance,double);

Return the Clipped output.

void vtkBoxClipDataSet::SetLocator ( vtkIncrementalPointLocator * locator )

Specify a spatial locator for merging points. By default, an instance of vtkMergePoints is used.

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

Specify a spatial locator for merging points. By default, an instance of vtkMergePoints is used.

void vtkBoxClipDataSet::CreateDefaultLocator ( )

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

unsigned long vtkBoxClipDataSet::GetMTime ( ) [virtual]

Return the mtime also considering the locator.

Reimplemented from vtkObject.

virtual unsigned int vtkBoxClipDataSet::GetOrientation ( ) [virtual]

Tells if clipping happens with a box parallel with coordinate axis (0) or with an hexahedral box (1). Initial value is 1.

virtual void vtkBoxClipDataSet::SetOrientation ( unsigned int ) [virtual]

Tells if clipping happens with a box parallel with coordinate axis (0) or with an hexahedral box (1). Initial value is 1.

static void vtkBoxClipDataSet::InterpolateEdge	(	vtkDataSetAttributes *	attributes,
		vtkIdType	toId,
		vtkIdType	fromId1,
		vtkIdType	fromId2,
		double	t
	)		`[static]`

void vtkBoxClipDataSet::MinEdgeF	(	const unsigned int *	id_v,
		const vtkIdType *	cellIds,
		unsigned int *	edgF
	)

void vtkBoxClipDataSet::PyramidToTetra	(	const vtkIdType *	pyramId,
		const vtkIdType *	cellIds,
		vtkCellArray *	newCellArray
	)

void vtkBoxClipDataSet::WedgeToTetra	(	const vtkIdType *	wedgeId,
		const vtkIdType *	cellIds,
		vtkCellArray *	newCellArray
	)

void vtkBoxClipDataSet::CellGrid	(	vtkIdType	typeobj,
		vtkIdType	npts,
		const vtkIdType *	cellIds,
		vtkCellArray *	newCellArray
	)

void vtkBoxClipDataSet::CreateTetra	(	vtkIdType	npts,
		const vtkIdType *	cellIds,
		vtkCellArray *	newCellArray
	)

void vtkBoxClipDataSet::ClipBox	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipHexahedron	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipBoxInOut	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

void vtkBoxClipDataSet::ClipHexahedronInOut	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

void vtkBoxClipDataSet::ClipBox2D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipBoxInOut2D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

void vtkBoxClipDataSet::ClipHexahedron2D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipHexahedronInOut2D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	tets,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

void vtkBoxClipDataSet::ClipBox1D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	lines,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipBoxInOut1D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	lines,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

void vtkBoxClipDataSet::ClipHexahedron1D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	lines,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipHexahedronInOut1D	(	vtkPoints *	newPoints,
		vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	lines,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

void vtkBoxClipDataSet::ClipBox0D	(	vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	verts,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipBoxInOut0D	(	vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	verts,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

void vtkBoxClipDataSet::ClipHexahedron0D	(	vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray *	verts,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData *	outCD
	)

void vtkBoxClipDataSet::ClipHexahedronInOut0D	(	vtkGenericCell *	cell,
		vtkIncrementalPointLocator *	locator,
		vtkCellArray **	verts,
		vtkPointData *	inPD,
		vtkPointData *	outPD,
		vtkCellData *	inCD,
		vtkIdType	cellId,
		vtkCellData **	outCD
	)

virtual int vtkBoxClipDataSet::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 vtkBoxClipDataSet::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.