Public Methods |
virtual const char * | GetClassName () |
virtual int | IsA (const char *type) |
void | PrintSelf (ostream &os, vtkIndent indent) |
virtual void | SetScalarConnectivity (int) |
virtual int | GetScalarConnectivity () |
virtual void | ScalarConnectivityOn () |
virtual void | ScalarConnectivityOff () |
virtual void | SetScalarRange (float data[]) |
virtual float * | GetScalarRange () |
virtual void | GetScalarRange (float data[2]) |
virtual void | SetExtractionMode (int) |
virtual int | GetExtractionMode () |
void | SetExtractionModeToPointSeededRegions () |
void | SetExtractionModeToCellSeededRegions () |
void | SetExtractionModeToLargestRegion () |
void | SetExtractionModeToSpecifiedRegions () |
void | SetExtractionModeToClosestPointRegion () |
void | SetExtractionModeToAllRegions () |
const char * | GetExtractionModeAsString () |
void | InitializeSeedList () |
void | AddSeed (int id) |
void | DeleteSeed (int id) |
void | InitializeSpecifiedRegionList () |
void | AddSpecifiedRegion (int id) |
void | DeleteSpecifiedRegion (int id) |
virtual void | SetClosestPoint (float, float, float) |
virtual void | SetClosestPoint (float[3]) |
virtual float * | GetClosestPoint () |
virtual void | GetClosestPoint (float data[3]) |
int | GetNumberOfExtractedRegions () |
virtual void | SetColorRegions (int) |
virtual int | GetColorRegions () |
virtual void | ColorRegionsOn () |
virtual void | ColorRegionsOff () |
void | SetMaxRecursionDepth (int) |
int | GetMaxRecursionDepth () |
Static Public Methods |
int | IsTypeOf (const char *type) |
vtkPolyDataConnectivityFilter * | SafeDownCast (vtkObject *o) |
vtkPolyDataConnectivityFilter * | New () |
Protected Methods |
| vtkPolyDataConnectivityFilter () |
| ~vtkPolyDataConnectivityFilter () |
| vtkPolyDataConnectivityFilter (const vtkPolyDataConnectivityFilter &) |
void | operator= (const vtkPolyDataConnectivityFilter &) |
void | Execute () |
void | TraverseAndMark () |
Protected Attributes |
int | ColorRegions |
int | ExtractionMode |
vtkIdList * | Seeds |
vtkIdList * | SpecifiedRegionIds |
vtkIntArray * | RegionSizes |
float | ClosestPoint [3] |
int | ScalarConnectivity |
float | ScalarRange [2] |
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.