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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkSpatialRepresentationFilter
* @brief 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. This 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 vtkPolyData blocks corresponding to
* different levels in the spatial search tree. The block ids range from 0
* (root level) to MaximumLevel. Note that the block for level "id" is not computed
* unless a AddLevel(id) method is issued. Thus, if you desire three levels of output
* (say 2,4,7), you would have to invoke AddLevel(2), AddLevel(4), and
* AddLevel(7). If GenerateLeaves is set to true (off by default), all leaf nodes
* of the locator (which may be at different levels) are computed and stored in
* block with id MaximumLevel + 1.
*
* @sa
* vtkLocator vtkPointLocator vtkCellLocator vtkOBBTree
*/
#ifndef vtkSpatialRepresentationFilter_h
#define vtkSpatialRepresentationFilter_h
#include "vtkFiltersGeneralModule.h" // For export macro
#include "vtkMultiBlockDataSetAlgorithm.h"
VTK_ABI_NAMESPACE_BEGIN
class vtkLocator;
class vtkDataSet;
class vtkSpatialRepresentationFilterInternal;
class VTKFILTERSGENERAL_EXPORT vtkSpatialRepresentationFilter : public vtkMultiBlockDataSetAlgorithm
{
public:
static vtkSpatialRepresentationFilter* New();
vtkTypeMacro(vtkSpatialRepresentationFilter, vtkMultiBlockDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Set/Get the locator that will be used to generate the representation.
*/
virtual void SetSpatialRepresentation(vtkLocator*);
vtkGetObjectMacro(SpatialRepresentation, vtkLocator);
///@}
///@{
/**
* Get the maximum level that is available. Populated during
* RequestData().
*/
vtkGetMacro(MaximumLevel, int);
///@}
/**
* Add a level to be computed.
*/
void AddLevel(int level);
/**
* Remove all levels.
*/
void ResetLevels();
///@{
/**
* Turn on/off the generation of leaf nodes. Off by default.
*/
vtkSetMacro(GenerateLeaves, bool);
vtkGetMacro(GenerateLeaves, bool);
vtkBooleanMacro(GenerateLeaves, bool);
///@}
protected:
vtkSpatialRepresentationFilter();
~vtkSpatialRepresentationFilter() override;
int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int MaximumLevel;
bool GenerateLeaves;
vtkLocator* SpatialRepresentation;
void ReportReferences(vtkGarbageCollector*) override;
int FillInputPortInformation(int, vtkInformation*) override;
private:
vtkSpatialRepresentationFilter(const vtkSpatialRepresentationFilter&) = delete;
void operator=(const vtkSpatialRepresentationFilter&) = delete;
vtkSpatialRepresentationFilterInternal* Internal;
};
VTK_ABI_NAMESPACE_END
#endif
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