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vtkPolyDataConnectivityFilter Class Reference
extract polygonal data based on geometric connectivity.
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#include <vtkPolyDataConnectivityFilter.h>
Inheritance diagram for vtkPolyDataConnectivityFilter:
[legend]Collaboration diagram for vtkPolyDataConnectivityFilter:
[legend]List of all members.
Detailed Description
extract polygonal data based on geometric connectivity.
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Date:
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2000/12/10 20:08:47
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Revision:
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1.22
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.
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See also:
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vtkConnectivityFilter
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Examples:
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vtkPolyDataConnectivityFilter (examples)
Definition at line 85 of file vtkPolyDataConnectivityFilter.h.
Constructor & Destructor Documentation
| vtkPolyDataConnectivityFilter::vtkPolyDataConnectivityFilter |
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| vtkPolyDataConnectivityFilter::~vtkPolyDataConnectivityFilter |
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| vtkPolyDataConnectivityFilter::vtkPolyDataConnectivityFilter |
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const vtkPolyDataConnectivityFilter & |
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Member Function Documentation
| virtual const char* vtkPolyDataConnectivityFilter::GetClassName |
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| int vtkPolyDataConnectivityFilter::IsTypeOf |
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const char * |
type |
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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 vtkPolyDataToPolyDataFilter. |
| virtual int vtkPolyDataConnectivityFilter::IsA |
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const char * |
type |
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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 vtkPolyDataToPolyDataFilter. |
| vtkPolyDataConnectivityFilter* vtkPolyDataConnectivityFilter::SafeDownCast |
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vtkObject * |
o |
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| void vtkPolyDataConnectivityFilter::PrintSelf |
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ostream & |
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vtkIndent |
indent |
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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 vtkSource. |
| vtkPolyDataConnectivityFilter* vtkPolyDataConnectivityFilter::New |
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Construct with default extraction mode to extract largest regions.
Reimplemented from vtkPolyDataSource. |
| virtual void vtkPolyDataConnectivityFilter::SetScalarConnectivity |
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int |
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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 |
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| virtual void vtkPolyDataConnectivityFilter::ScalarConnectivityOn |
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| virtual void vtkPolyDataConnectivityFilter::ScalarConnectivityOff |
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| virtual void vtkPolyDataConnectivityFilter::SetScalarRange |
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float |
data[] |
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Set the scalar range to use to extract cells based on scalar connectivity. |
| virtual float* vtkPolyDataConnectivityFilter::GetScalarRange |
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| virtual void vtkPolyDataConnectivityFilter::GetScalarRange |
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float |
data[2] |
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| virtual void vtkPolyDataConnectivityFilter::SetExtractionMode |
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int |
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Control the extraction of connected surfaces. |
| virtual int vtkPolyDataConnectivityFilter::GetExtractionMode |
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| void vtkPolyDataConnectivityFilter::SetExtractionModeToPointSeededRegions |
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| void vtkPolyDataConnectivityFilter::SetExtractionModeToCellSeededRegions |
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| void vtkPolyDataConnectivityFilter::SetExtractionModeToLargestRegion |
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| void vtkPolyDataConnectivityFilter::SetExtractionModeToSpecifiedRegions |
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| void vtkPolyDataConnectivityFilter::SetExtractionModeToClosestPointRegion |
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| void vtkPolyDataConnectivityFilter::SetExtractionModeToAllRegions |
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| const char * vtkPolyDataConnectivityFilter::GetExtractionModeAsString |
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void |
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| void vtkPolyDataConnectivityFilter::InitializeSeedList |
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Initialize list of point ids/cell ids used to seed regions. |
| void vtkPolyDataConnectivityFilter::AddSeed |
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int |
id |
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Add a seed id (point or cell id). Note: ids are 0-offset. |
| void vtkPolyDataConnectivityFilter::DeleteSeed |
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int |
id |
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Delete a seed id (point or cell id). Note: ids are 0-offset. |
| void vtkPolyDataConnectivityFilter::InitializeSpecifiedRegionList |
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Initialize list of region ids to extract. |
| void vtkPolyDataConnectivityFilter::AddSpecifiedRegion |
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int |
id |
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Add a region id to extract. Note: ids are 0-offset. |
| void vtkPolyDataConnectivityFilter::DeleteSpecifiedRegion |
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int |
id |
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Delete a region id to extract. Note: ids are 0-offset. |
| virtual void vtkPolyDataConnectivityFilter::SetClosestPoint |
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float |
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float |
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float |
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Use to specify x-y-z point coordinates when extracting the region closest to a specified point. |
| virtual void vtkPolyDataConnectivityFilter::SetClosestPoint |
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float |
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| virtual float* vtkPolyDataConnectivityFilter::GetClosestPoint |
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| virtual void vtkPolyDataConnectivityFilter::GetClosestPoint |
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float |
data[3] |
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| int vtkPolyDataConnectivityFilter::GetNumberOfExtractedRegions |
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Obtain the number of connected regions. |
| virtual void vtkPolyDataConnectivityFilter::SetColorRegions |
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int |
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Turn on/off the coloring of connected regions. |
| virtual int vtkPolyDataConnectivityFilter::GetColorRegions |
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| virtual void vtkPolyDataConnectivityFilter::ColorRegionsOn |
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| virtual void vtkPolyDataConnectivityFilter::ColorRegionsOff |
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| void vtkPolyDataConnectivityFilter::SetMaxRecursionDepth |
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int |
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FOR LEGACY COMPATIBILITY ONLY, DO NOT USE. The connectivity extraction algorithm works recursively. In some systems the stack depth is limited. This methods specifies the maximum recursion depth.
Definition at line 160 of file vtkPolyDataConnectivityFilter.h. |
| int vtkPolyDataConnectivityFilter::GetMaxRecursionDepth |
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| void vtkPolyDataConnectivityFilter::operator= |
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const vtkPolyDataConnectivityFilter & |
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[inline, protected] |
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| void vtkPolyDataConnectivityFilter::Execute |
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| void vtkPolyDataConnectivityFilter::TraverseAndMark |
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Member Data Documentation
int vtkPolyDataConnectivityFilter::ColorRegions [protected]
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int vtkPolyDataConnectivityFilter::ExtractionMode [protected]
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vtkIdList* vtkPolyDataConnectivityFilter::Seeds [protected]
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vtkIdList* vtkPolyDataConnectivityFilter::SpecifiedRegionIds [protected]
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vtkIntArray* vtkPolyDataConnectivityFilter::RegionSizes [protected]
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float vtkPolyDataConnectivityFilter::ClosestPoint[3] [protected]
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int vtkPolyDataConnectivityFilter::ScalarConnectivity [protected]
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float vtkPolyDataConnectivityFilter::ScalarRange[2] [protected]
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The documentation for this class was generated from the following file:
Generated on Wed Nov 21 12:57:39 2001 for VTK by
1.2.11.1 written by Dimitri van Heesch,
© 1997-2001