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vtkSpatialRepresentationFilter Class Reference

#include <vtkSpatialRepresentationFilter.h>

Inheritance diagram for vtkSpatialRepresentationFilter:

Inheritance graph
Collaboration diagram for vtkSpatialRepresentationFilter:

Collaboration graph
List of all members.

Detailed Description

generate polygonal model of spatial search object (i.e., a vtkLocator)

vtkSpatialRepresentationFilter generates an polygonal representation of a spatial search (vtkLocator) object. The representation varies depending upon the nature of the spatial search object. For example, the representation for vtkOBBTree is a collection of oriented bounding boxes. Ths input to this filter is a dataset of any type, and the output is polygonal data. You must also specify the spatial search object to use.

Generally spatial search objects are used for collision detection and other geometric operations, but in this filter one or more levels of spatial searchers can be generated to form a geometric approximation to the input data. This is a form of data simplification, generally used to accelerate the rendering process. Or, this filter can be used as a debugging/ visualization aid for spatial search objects.

This filter can generate one or more output vtkPolyData corresponding to different levels in the spatial search tree. The output data is retrieved using the GetOutput(id) method, where id ranges from 0 (root level) to Level. Note that the output for level "id" is not computed unless a GetOutput(id) method is issued. Thus, if you desire three levels of output (say 2,4,7), you would have to invoke GetOutput(2), GetOutput(4), and GetOutput(7). (Also note that the Level ivar is computed automatically depending on the size and nature of the input data.) There is also another GetOutput() method that takes no parameters. This method returns the leafs of the spatial search tree, which may be at different levels.

You can specify the number of levels of to generate with the MaxLevels ivar. However, when the spatial search tree is built, this number of levels may not actually be generated. The actual number available can be found in the Levels ivar. Note that the value of Levels may change after filter execution.
See also:
vtkLocator vtkPointLocator vtkCellLocator vtkOBBTree
vtkSpatialRepresentationFilter (Tests)

Definition at line 68 of file vtkSpatialRepresentationFilter.h.

Public Types

typedef vtkPolyDataSource Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
vtkPolyDataGetOutput (int level)
vtkPolyDataGetOutput ()
void PrintSelf (ostream &os, vtkIndent indent)
virtual void SetSpatialRepresentation (vtkLocator *)
virtual vtkLocatorGetSpatialRepresentation ()
virtual int GetLevel ()
void ResetOutput ()
virtual void SetInput (vtkDataSet *input)
vtkDataSetGetInput ()

Static Public Member Functions

static vtkSpatialRepresentationFilterNew ()
static int IsTypeOf (const char *type)
static vtkSpatialRepresentationFilterSafeDownCast (vtkObject *o)

Protected Member Functions

 vtkSpatialRepresentationFilter ()
 ~vtkSpatialRepresentationFilter ()
void Execute ()
void GenerateOutput ()
virtual void ReportReferences (vtkGarbageCollector *)
virtual int FillInputPortInformation (int, vtkInformation *)

Protected Attributes

int Level
int TerminalNodesRequested

Member Typedef Documentation

typedef vtkPolyDataSource vtkSpatialRepresentationFilter::Superclass

Reimplemented from vtkPolyDataSource.

Definition at line 72 of file vtkSpatialRepresentationFilter.h.

Constructor & Destructor Documentation

vtkSpatialRepresentationFilter::vtkSpatialRepresentationFilter  )  [protected]

vtkSpatialRepresentationFilter::~vtkSpatialRepresentationFilter  )  [protected]

Member Function Documentation

static vtkSpatialRepresentationFilter* vtkSpatialRepresentationFilter::New  )  [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkAlgorithm.

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

Reimplemented from vtkPolyDataSource.

static int vtkSpatialRepresentationFilter::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 vtkPolyDataSource.

virtual int vtkSpatialRepresentationFilter::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 vtkPolyDataSource.

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

Reimplemented from vtkPolyDataSource.

void vtkSpatialRepresentationFilter::PrintSelf ostream &  os,
vtkIndent  indent

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 vtkPolyDataSource.

virtual void vtkSpatialRepresentationFilter::SetSpatialRepresentation vtkLocator  )  [virtual]

Set/Get the locator that will be used to generate the representation.

virtual vtkLocator* vtkSpatialRepresentationFilter::GetSpatialRepresentation  )  [virtual]

virtual int vtkSpatialRepresentationFilter::GetLevel  )  [virtual]

Get the maximum number of outputs actually available.

vtkPolyData* vtkSpatialRepresentationFilter::GetOutput int  level  ) 

A special form of the GetOutput() method that returns multiple outputs.

Reimplemented from vtkPolyDataSource.

vtkPolyData* vtkSpatialRepresentationFilter::GetOutput  ) 

Output of terminal nodes/leaves.

Reimplemented from vtkPolyDataSource.

void vtkSpatialRepresentationFilter::ResetOutput  ) 

Reset requested output levels

virtual void vtkSpatialRepresentationFilter::SetInput vtkDataSet input  )  [virtual]

Set / get the input data or filter.

vtkDataSet* vtkSpatialRepresentationFilter::GetInput  ) 

Reset requested output levels

void vtkSpatialRepresentationFilter::Execute  )  [protected, virtual]

This method is the old style execute method

Reimplemented from vtkSource.

void vtkSpatialRepresentationFilter::GenerateOutput  )  [protected]

virtual void vtkSpatialRepresentationFilter::ReportReferences vtkGarbageCollector  )  [protected, virtual]

Reimplemented from vtkSource.

virtual int vtkSpatialRepresentationFilter::FillInputPortInformation int  ,
[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 vtkProcessObject.

Member Data Documentation

int vtkSpatialRepresentationFilter::Level [protected]

Definition at line 109 of file vtkSpatialRepresentationFilter.h.

int vtkSpatialRepresentationFilter::TerminalNodesRequested [protected]

Definition at line 110 of file vtkSpatialRepresentationFilter.h.

vtkLocator* vtkSpatialRepresentationFilter::SpatialRepresentation [protected]

Definition at line 112 of file vtkSpatialRepresentationFilter.h.

The documentation for this class was generated from the following file:
Generated on Tue Jan 22 00:17:25 2008 for VTK by  doxygen 1.4.3-20050530