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116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkExtractBlock.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkExtractBlock
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* @brief extracts blocks from a multiblock dataset.
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*
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* vtkExtractBlock is a filter that extracts blocks from a multiblock dataset.
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* Each node in the multi-block tree is identified by an \c index. The index can
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* be obtained by performing a preorder traversal of the tree (including empty
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* nodes). eg. A(B (D, E), C(F, G)).
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* Inorder traversal yields: A, B, D, E, C, F, G
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* Index of A is 0, while index of C is 4.
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*/
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#ifndef vtkExtractBlock_h
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#define vtkExtractBlock_h
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#include "vtkFiltersExtractionModule.h" // For export macro
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#include "vtkMultiBlockDataSetAlgorithm.h"
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class vtkDataObjectTreeIterator;
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class vtkMultiPieceDataSet;
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class VTKFILTERSEXTRACTION_EXPORT vtkExtractBlock : public vtkMultiBlockDataSetAlgorithm
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{
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public:
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static vtkExtractBlock* New();
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vtkTypeMacro(vtkExtractBlock, vtkMultiBlockDataSetAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@{
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/**
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* Select the block indices to extract.
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* Each node in the multi-block tree is identified by an \c index. The index can
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* be obtained by performing a preorder traversal of the tree (including empty
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* nodes). eg. A(B (D, E), C(F, G)).
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* Inorder traversal yields: A, B, D, E, C, F, G
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* Index of A is 0, while index of C is 4.
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*/
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void AddIndex(unsigned int index);
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void RemoveIndex(unsigned int index);
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void RemoveAllIndices();
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//@}
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//@{
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/**
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* When set, the output mutliblock dataset will be pruned to remove empty
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* nodes. On by default.
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*/
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vtkSetMacro(PruneOutput, int);
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vtkGetMacro(PruneOutput, int);
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vtkBooleanMacro(PruneOutput, int);
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//@}
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//@{
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/**
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* This is used only when PruneOutput is ON. By default, when pruning the
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* output i.e. remove empty blocks, if node has only 1 non-null child block,
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* then that node is removed. To preserve these parent nodes, set this flag to
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* true. Off by default.
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*/
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vtkSetMacro(MaintainStructure, int);
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vtkGetMacro(MaintainStructure, int);
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vtkBooleanMacro(MaintainStructure, int);
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//@}
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protected:
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vtkExtractBlock();
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~vtkExtractBlock();
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/**
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* Internal key, used to avoid pruning of a branch.
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*/
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static vtkInformationIntegerKey* DONT_PRUNE();
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/// Implementation of the algorithm.
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virtual int RequestData(vtkInformation *,
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vtkInformationVector **,
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vtkInformationVector *);
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/// Extract subtree
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void CopySubTree(vtkDataObjectTreeIterator* loc,
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vtkMultiBlockDataSet* output, vtkMultiBlockDataSet* input);
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bool Prune(vtkMultiBlockDataSet* mblock);
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bool Prune(vtkMultiPieceDataSet* mblock);
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bool Prune(vtkDataObject* mblock);
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int PruneOutput;
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int MaintainStructure;
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private:
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vtkExtractBlock(const vtkExtractBlock&) VTK_DELETE_FUNCTION;
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void operator=(const vtkExtractBlock&) VTK_DELETE_FUNCTION;
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class vtkSet;
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vtkSet *Indices;
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vtkSet *ActiveIndices;
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};
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#endif
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