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vtkPolyDataConnectivityFilter Class Reference

#include <vtkPolyDataConnectivityFilter.h>

Inheritance diagram for vtkPolyDataConnectivityFilter:

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Collaboration diagram for vtkPolyDataConnectivityFilter:

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List of all members.

Detailed Description

extract polygonal data based on geometric connectivity

vtkPolyDataConnectivityFilter is a filter that extracts cells that share common points and/or satisfy a scalar threshold criterion. (Such a group of cells is called a region.) The filter works in one of six ways: 1) extract the largest connected region in the dataset; 2) extract specified region numbers; 3) extract all regions sharing specified point ids; 4) extract all regions sharing specified cell ids; 5) extract the region closest to the specified point; or 6) extract all regions (used to color regions).

This filter is specialized for polygonal data. This means it runs a bit faster and is easier to construct visualization networks that process polygonal data.

The behavior of vtkPolyDataConnectivityFilter can be modified by turning on the boolean ivar ScalarConnectivity. If this flag is on, the connectivity algorithm is modified so that cells are considered connected only if 1) they are geometrically connected (share a point) and 2) the scalar values of one of the cell's points falls in the scalar range specified. This use of ScalarConnectivity is particularly useful for selecting cells for later processing.

See also:
vtkConnectivityFilter
Tests:
vtkPolyDataConnectivityFilter (Tests)

Definition at line 62 of file vtkPolyDataConnectivityFilter.h.
virtual void SetScalarConnectivity (int)
virtual int GetScalarConnectivity ()
virtual void ScalarConnectivityOn ()
virtual void ScalarConnectivityOff ()
static vtkPolyDataConnectivityFilterNew ()

Public Types

typedef vtkPolyDataAlgorithm Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
void InitializeSeedList ()
void AddSeed (int id)
void DeleteSeed (int id)
void InitializeSpecifiedRegionList ()
void AddSpecifiedRegion (int id)
virtual void SetScalarRange (double, double)
void SetScalarRange (double[2])
virtual double * GetScalarRange ()
virtual void GetScalarRange (double &, double &)
virtual void GetScalarRange (double[2])
virtual void SetExtractionMode (int)
virtual int GetExtractionMode ()
void SetExtractionModeToPointSeededRegions ()
void SetExtractionModeToCellSeededRegions ()
void SetExtractionModeToLargestRegion ()
void SetExtractionModeToSpecifiedRegions ()
void SetExtractionModeToClosestPointRegion ()
void SetExtractionModeToAllRegions ()
const char * GetExtractionModeAsString ()
void DeleteSpecifiedRegion (int id)
virtual void SetClosestPoint (double, double, double)
virtual void SetClosestPoint (double[3])
virtual double * GetClosestPoint ()
virtual void GetClosestPoint (double data[3])
int GetNumberOfExtractedRegions ()
virtual void SetColorRegions (int)
virtual int GetColorRegions ()
virtual void ColorRegionsOn ()
virtual void ColorRegionsOff ()

Static Public Member Functions

static int IsTypeOf (const char *type)
static vtkPolyDataConnectivityFilterSafeDownCast (vtkObject *o)

Protected Member Functions

 vtkPolyDataConnectivityFilter ()
 ~vtkPolyDataConnectivityFilter ()
int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
void TraverseAndMark ()

Protected Attributes

int ColorRegions
int ExtractionMode
vtkIdListSeeds
vtkIdListSpecifiedRegionIds
vtkIdTypeArrayRegionSizes
double ClosestPoint [3]
int ScalarConnectivity
double ScalarRange [2]


Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkPolyDataConnectivityFilter::Superclass
 

Reimplemented from vtkPolyDataAlgorithm.

Definition at line 65 of file vtkPolyDataConnectivityFilter.h.


Constructor & Destructor Documentation

vtkPolyDataConnectivityFilter::vtkPolyDataConnectivityFilter  )  [protected]
 

vtkPolyDataConnectivityFilter::~vtkPolyDataConnectivityFilter  )  [protected]
 


Member Function Documentation

virtual const char* vtkPolyDataConnectivityFilter::GetClassName  )  [virtual]
 

Reimplemented from vtkPolyDataAlgorithm.

static int vtkPolyDataConnectivityFilter::IsTypeOf const char *  type  )  [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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

virtual int vtkPolyDataConnectivityFilter::IsA const char *  type  )  [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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

static vtkPolyDataConnectivityFilter* vtkPolyDataConnectivityFilter::SafeDownCast vtkObject o  )  [static]
 

Reimplemented from vtkPolyDataAlgorithm.

void vtkPolyDataConnectivityFilter::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 vtkPolyDataAlgorithm.

static vtkPolyDataConnectivityFilter* vtkPolyDataConnectivityFilter::New  )  [static]
 

Construct with default extraction mode to extract largest regions.

Reimplemented from vtkPolyDataAlgorithm.

virtual void vtkPolyDataConnectivityFilter::SetScalarConnectivity int   )  [virtual]
 

Turn on/off connectivity based on scalar value. If on, cells are connected only if they share points AND one of the cells scalar values falls in the scalar range specified.

virtual int vtkPolyDataConnectivityFilter::GetScalarConnectivity  )  [virtual]
 

Turn on/off connectivity based on scalar value. If on, cells are connected only if they share points AND one of the cells scalar values falls in the scalar range specified.

virtual void vtkPolyDataConnectivityFilter::ScalarConnectivityOn  )  [virtual]
 

Turn on/off connectivity based on scalar value. If on, cells are connected only if they share points AND one of the cells scalar values falls in the scalar range specified.

virtual void vtkPolyDataConnectivityFilter::ScalarConnectivityOff  )  [virtual]
 

Turn on/off connectivity based on scalar value. If on, cells are connected only if they share points AND one of the cells scalar values falls in the scalar range specified.

virtual void vtkPolyDataConnectivityFilter::SetScalarRange double  ,
double 
[virtual]
 

Set the scalar range to use to extract cells based on scalar connectivity.

void vtkPolyDataConnectivityFilter::SetScalarRange double  [2]  ) 
 

Set the scalar range to use to extract cells based on scalar connectivity.

virtual double* vtkPolyDataConnectivityFilter::GetScalarRange  )  [virtual]
 

Set the scalar range to use to extract cells based on scalar connectivity.

virtual void vtkPolyDataConnectivityFilter::GetScalarRange double &  ,
double & 
[virtual]
 

Set the scalar range to use to extract cells based on scalar connectivity.

virtual void vtkPolyDataConnectivityFilter::GetScalarRange double  [2]  )  [virtual]
 

Set the scalar range to use to extract cells based on scalar connectivity.

virtual void vtkPolyDataConnectivityFilter::SetExtractionMode int   )  [virtual]
 

Control the extraction of connected surfaces.

virtual int vtkPolyDataConnectivityFilter::GetExtractionMode  )  [virtual]
 

Control the extraction of connected surfaces.

void vtkPolyDataConnectivityFilter::SetExtractionModeToPointSeededRegions  )  [inline]
 

Control the extraction of connected surfaces.

Definition at line 93 of file vtkPolyDataConnectivityFilter.h.

References VTK_EXTRACT_POINT_SEEDED_REGIONS.

void vtkPolyDataConnectivityFilter::SetExtractionModeToCellSeededRegions  )  [inline]
 

Control the extraction of connected surfaces.

Definition at line 95 of file vtkPolyDataConnectivityFilter.h.

References VTK_EXTRACT_CELL_SEEDED_REGIONS.

void vtkPolyDataConnectivityFilter::SetExtractionModeToLargestRegion  )  [inline]
 

Control the extraction of connected surfaces.

Definition at line 97 of file vtkPolyDataConnectivityFilter.h.

References VTK_EXTRACT_LARGEST_REGION.

void vtkPolyDataConnectivityFilter::SetExtractionModeToSpecifiedRegions  )  [inline]
 

Control the extraction of connected surfaces.

Definition at line 99 of file vtkPolyDataConnectivityFilter.h.

References VTK_EXTRACT_SPECIFIED_REGIONS.

void vtkPolyDataConnectivityFilter::SetExtractionModeToClosestPointRegion  )  [inline]
 

Control the extraction of connected surfaces.

Definition at line 101 of file vtkPolyDataConnectivityFilter.h.

References VTK_EXTRACT_CLOSEST_POINT_REGION.

void vtkPolyDataConnectivityFilter::SetExtractionModeToAllRegions  )  [inline]
 

Control the extraction of connected surfaces.

Definition at line 103 of file vtkPolyDataConnectivityFilter.h.

References VTK_EXTRACT_ALL_REGIONS.

const char * vtkPolyDataConnectivityFilter::GetExtractionModeAsString void   )  [inline]
 

Return the method of extraction as a string.

Definition at line 185 of file vtkPolyDataConnectivityFilter.h.

References VTK_EXTRACT_ALL_REGIONS, VTK_EXTRACT_CELL_SEEDED_REGIONS, VTK_EXTRACT_CLOSEST_POINT_REGION, VTK_EXTRACT_POINT_SEEDED_REGIONS, and VTK_EXTRACT_SPECIFIED_REGIONS.

void vtkPolyDataConnectivityFilter::InitializeSeedList  ) 
 

Initialize list of point ids/cell ids used to seed regions.

void vtkPolyDataConnectivityFilter::AddSeed int  id  ) 
 

Add a seed id (point or cell id). Note: ids are 0-offset.

void vtkPolyDataConnectivityFilter::DeleteSeed int  id  ) 
 

Delete a seed id (point or cell id). Note: ids are 0-offset.

void vtkPolyDataConnectivityFilter::InitializeSpecifiedRegionList  ) 
 

Initialize list of region ids to extract.

void vtkPolyDataConnectivityFilter::AddSpecifiedRegion int  id  ) 
 

Add a region id to extract. Note: ids are 0-offset.

void vtkPolyDataConnectivityFilter::DeleteSpecifiedRegion int  id  ) 
 

Delete a region id to extract. Note: ids are 0-offset.

virtual void vtkPolyDataConnectivityFilter::SetClosestPoint double  ,
double  ,
double 
[virtual]
 

Use to specify x-y-z point coordinates when extracting the region closest to a specified point.

virtual void vtkPolyDataConnectivityFilter::SetClosestPoint double  [3]  )  [virtual]
 

Delete a region id to extract. Note: ids are 0-offset.

virtual double* vtkPolyDataConnectivityFilter::GetClosestPoint  )  [virtual]
 

Delete a region id to extract. Note: ids are 0-offset.

virtual void vtkPolyDataConnectivityFilter::GetClosestPoint double  data[3]  )  [virtual]
 

Delete a region id to extract. Note: ids are 0-offset.

int vtkPolyDataConnectivityFilter::GetNumberOfExtractedRegions  ) 
 

Obtain the number of connected regions.

virtual void vtkPolyDataConnectivityFilter::SetColorRegions int   )  [virtual]
 

Turn on/off the coloring of connected regions.

virtual int vtkPolyDataConnectivityFilter::GetColorRegions  )  [virtual]
 

Obtain the number of connected regions.

virtual void vtkPolyDataConnectivityFilter::ColorRegionsOn  )  [virtual]
 

Obtain the number of connected regions.

virtual void vtkPolyDataConnectivityFilter::ColorRegionsOff  )  [virtual]
 

Obtain the number of connected regions.

int vtkPolyDataConnectivityFilter::RequestData vtkInformation ,
vtkInformationVector **  ,
vtkInformationVector
[protected, virtual]
 

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

Reimplemented from vtkPolyDataAlgorithm.

void vtkPolyDataConnectivityFilter::TraverseAndMark  )  [protected]
 


Member Data Documentation

int vtkPolyDataConnectivityFilter::ColorRegions [protected]
 

Definition at line 150 of file vtkPolyDataConnectivityFilter.h.

int vtkPolyDataConnectivityFilter::ExtractionMode [protected]
 

Definition at line 151 of file vtkPolyDataConnectivityFilter.h.

vtkIdList* vtkPolyDataConnectivityFilter::Seeds [protected]
 

Definition at line 152 of file vtkPolyDataConnectivityFilter.h.

vtkIdList* vtkPolyDataConnectivityFilter::SpecifiedRegionIds [protected]
 

Definition at line 153 of file vtkPolyDataConnectivityFilter.h.

vtkIdTypeArray* vtkPolyDataConnectivityFilter::RegionSizes [protected]
 

Definition at line 154 of file vtkPolyDataConnectivityFilter.h.

double vtkPolyDataConnectivityFilter::ClosestPoint[3] [protected]
 

Definition at line 156 of file vtkPolyDataConnectivityFilter.h.

int vtkPolyDataConnectivityFilter::ScalarConnectivity [protected]
 

Definition at line 158 of file vtkPolyDataConnectivityFilter.h.

double vtkPolyDataConnectivityFilter::ScalarRange[2] [protected]
 

Definition at line 159 of file vtkPolyDataConnectivityFilter.h.


The documentation for this class was generated from the following file:
Generated on Tue Jan 22 00:09:27 2008 for VTK by  doxygen 1.4.3-20050530