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vtkSpatialRepresentationFilter Class Reference
generate polygonal model of spatial search object (i.e., a vtkLocator).
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#include <vtkSpatialRepresentationFilter.h>
Inheritance diagram for vtkSpatialRepresentationFilter:
[legend]Collaboration diagram for vtkSpatialRepresentationFilter:
[legend]List of all members.
Detailed Description
generate polygonal model of spatial search object (i.e., a vtkLocator).
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Date:
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2000/12/10 20:08:52
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Revision:
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1.20
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.
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Warning:
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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.
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See also:
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vtkLocator vtkPointLocator vtkCellLocator vtkOBBTree
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Examples:
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vtkSpatialRepresentationFilter (examples)
Definition at line 94 of file vtkSpatialRepresentationFilter.h.
Constructor & Destructor Documentation
| vtkSpatialRepresentationFilter::vtkSpatialRepresentationFilter |
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[protected] |
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| vtkSpatialRepresentationFilter::~vtkSpatialRepresentationFilter |
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| vtkSpatialRepresentationFilter::vtkSpatialRepresentationFilter |
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const vtkSpatialRepresentationFilter & |
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[inline, protected] |
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Member Function Documentation
| vtkSpatialRepresentationFilter* vtkSpatialRepresentationFilter::New |
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[static] |
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Instantiate object with no start, end, or progress methods.
Reimplemented from vtkPolyDataSource. |
| virtual const char* vtkSpatialRepresentationFilter::GetClassName |
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[virtual] |
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| int vtkSpatialRepresentationFilter::IsTypeOf |
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const char * |
type |
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[static] |
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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 vtkPolyDataSource. |
| virtual int vtkSpatialRepresentationFilter::IsA |
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const char * |
type |
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[virtual] |
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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 vtkPolyDataSource. |
| vtkSpatialRepresentationFilter* vtkSpatialRepresentationFilter::SafeDownCast |
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vtkObject * |
o |
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[static] |
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Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkPolyDataSource. |
| void vtkSpatialRepresentationFilter::PrintSelf |
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ostream & |
os, |
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vtkIndent |
indent |
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[virtual] |
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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. |
| virtual void vtkSpatialRepresentationFilter::SetSpatialRepresentation |
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vtkLocator * |
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[virtual] |
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Set/Get the locator that will be used to generate the representation. |
| virtual vtkLocator* vtkSpatialRepresentationFilter::GetSpatialRepresentation |
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[virtual] |
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| virtual int vtkSpatialRepresentationFilter::GetLevel |
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[virtual] |
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Get the maximum number of outputs actually available. |
| vtkPolyData* vtkSpatialRepresentationFilter::GetOutput |
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int |
level |
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| vtkPolyData* vtkSpatialRepresentationFilter::GetOutput |
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| void vtkSpatialRepresentationFilter::ResetOutput |
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Reset requested output levels |
| virtual void vtkSpatialRepresentationFilter::SetInput |
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vtkDataSet * |
input |
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[virtual] |
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Set / get the input data or filter. |
| virtual void vtkSpatialRepresentationFilter::SetInput |
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vtkImageData * |
cache |
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[inline, virtual] |
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| vtkDataSet* vtkSpatialRepresentationFilter::GetInput |
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| void vtkSpatialRepresentationFilter::operator= |
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const vtkSpatialRepresentationFilter & |
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[inline, protected] |
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| void vtkSpatialRepresentationFilter::Execute |
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[protected, virtual] |
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| void vtkSpatialRepresentationFilter::GenerateOutput |
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[protected] |
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Member Data Documentation
int vtkSpatialRepresentationFilter::Level [protected]
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int vtkSpatialRepresentationFilter::TerminalNodesRequested [protected]
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vtkLocator* vtkSpatialRepresentationFilter::SpatialRepresentation [protected]
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The documentation for this class was generated from the following file:
Generated on Wed Nov 21 13:00:26 2001 for VTK by
1.2.11.1 written by Dimitri van Heesch,
© 1997-2001