generate a subdivision surface using the Butterfly Scheme More...

#include <vtkButterflySubdivisionFilter.h>

Inheritance diagram for vtkButterflySubdivisionFilter:

Collaboration diagram for vtkButterflySubdivisionFilter:

Protected Member Functions
	vtkButterflySubdivisionFilter ()

	~vtkButterflySubdivisionFilter ()

Protected Member Functions inherited from vtkInterpolatingSubdivisionFilter
	vtkInterpolatingSubdivisionFilter ()

	~vtkInterpolatingSubdivisionFilter ()

int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )

void	GenerateSubdivisionCells (vtkPolyData inputDS, vtkIntArray edgeData, vtkCellArray outputPolys, vtkCellData outputCD)

int	FindEdge (vtkPolyData mesh, vtkIdType cellId, vtkIdType p1, vtkIdType p2, vtkIntArray edgeData, vtkIdList *cellIds)

vtkIdType	InterpolatePosition (vtkPoints inputPts, vtkPoints outputPts, vtkIdList stencil, double weights)

Protected Member Functions inherited from vtkPolyDataAlgorithm
	vtkPolyDataAlgorithm ()

	~vtkPolyDataAlgorithm ()

virtual int	RequestInformation (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)

virtual int	FillOutputPortInformation (int port, vtkInformation *info)

virtual int	FillInputPortInformation (int port, vtkInformation *info)

virtual int	RequestUpdateExtent (vtkInformation , vtkInformationVector , vtkInformationVector )

virtual void	ExecuteData (vtkDataObject *output)

virtual void	Execute ()

Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()

	~vtkAlgorithm ()

virtual void	SetNumberOfInputPorts (int n)

virtual void	SetNumberOfOutputPorts (int n)

int	InputPortIndexInRange (int index, const char *action)

int	OutputPortIndexInRange (int index, const char *action)

int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)

virtual vtkExecutive *	CreateDefaultExecutive ()

virtual void	ReportReferences (vtkGarbageCollector *)

virtual void	SetNumberOfInputConnections (int port, int n)

int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)

int	GetInputArrayAssociation (int idx, vtkDataObject *input)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)

vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)

vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)

vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)

virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)

virtual void	SetErrorCode (unsigned long)

Protected Member Functions inherited from vtkObject
	vtkObject ()

virtual	~vtkObject ()

virtual void	RegisterInternal (vtkObjectBase *, int check)

virtual void	UnRegisterInternal (vtkObjectBase *, int check)

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)

void	InternalReleaseFocus ()

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &os)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

typedef vtkInterpolatingSubdivisionFilter	Superclass

static vtkButterflySubdivisionFilter *	New ()

static int	IsTypeOf (const char *type)

static vtkButterflySubdivisionFilter *	SafeDownCast (vtkObject *o)

virtual const char *	GetClassName ()

virtual int	IsA (const char *type)

Additional Inherited Members
Public Types inherited from vtkInterpolatingSubdivisionFilter
typedef vtkPolyDataAlgorithm	Superclass

Public Member Functions inherited from vtkInterpolatingSubdivisionFilter
void	PrintSelf (ostream &os, vtkIndent indent)

virtual void	SetNumberOfSubdivisions (int)

virtual int	GetNumberOfSubdivisions ()

Static Public Member Functions inherited from vtkInterpolatingSubdivisionFilter
static int	IsTypeOf (const char *type)

static vtkInterpolatingSubdivisionFilter *	SafeDownCast (vtkObject *o)

Public Attributes inherited from vtkAlgorithm
int	AbortExecute

Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()

Protected Attributes inherited from vtkInterpolatingSubdivisionFilter
int	NumberOfSubdivisions

Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Friends inherited from vtkObject

Detailed Description

generate a subdivision surface using the Butterfly Scheme

vtkButterflySubdivisionFilter is an interpolating subdivision scheme that creates four new triangles for each triangle in the mesh. The user can specify the NumberOfSubdivisions. This filter implements the 8-point butterfly scheme described in: Zorin, D., Schroder, P., and Sweldens, W., "Interpolating Subdivisions for Meshes with Arbitrary Topology," Computer Graphics Proceedings, Annual Conference Series, 1996, ACM SIGGRAPH, pp.189-192. This scheme improves previous butterfly subdivisions with special treatment of vertices with valence other than 6.

Currently, the filter only operates on triangles. Users should use the vtkTriangleFilter to triangulate meshes that contain polygons or triangle strips.

The filter interpolates point data using the same scheme. New triangles created at a subdivision step will have the cell data of their parent cell.