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111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkExtractRectilinearGrid.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 vtkExtractRectilinearGrid
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* @brief Extract a sub grid (VOI) from the structured rectilinear dataset.
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*
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* vtkExtractRectilinearGrid rounds out the set of filters that extract
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* a subgrid out of a larger structured data set. RIght now, this filter
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* only supports extracting a VOI. In the future, it might support
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* strides like the vtkExtract grid filter.
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*
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* @sa
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* vtkExtractGrid vtkImageClip vtkGeometryFilter vtkExtractGeometry vtkExtractVOI
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* vtkStructuredGridGeometryFilter
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*/
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#ifndef vtkExtractRectilinearGrid_h
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#define vtkExtractRectilinearGrid_h
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#include "vtkFiltersExtractionModule.h" // For export macro
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#include "vtkRectilinearGridAlgorithm.h"
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// Forward Declarations
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class vtkExtractStructuredGridHelper;
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class VTKFILTERSEXTRACTION_EXPORT vtkExtractRectilinearGrid : public vtkRectilinearGridAlgorithm
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{
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public:
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static vtkExtractRectilinearGrid *New();
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vtkTypeMacro(vtkExtractRectilinearGrid,vtkRectilinearGridAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@{
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/**
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* Specify i-j-k (min,max) pairs to extract. The resulting structured grid
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* dataset can be of any topological dimension (i.e., point, line, plane,
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* or 3D grid).
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*/
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vtkSetVector6Macro(VOI,int);
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vtkGetVectorMacro(VOI,int,6);
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//@}
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//@{
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/**
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* Set the sampling rate in the i, j, and k directions. If the rate is > 1,
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* then the resulting VOI will be subsampled representation of the input.
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* For example, if the SampleRate=(2,2,2), every other point will be
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* selected, resulting in a volume 1/8th the original size.
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* Initial value is (1,1,1).
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*/
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vtkSetVector3Macro(SampleRate, int);
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vtkGetVectorMacro(SampleRate, int, 3);
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//@}
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//@{
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/**
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* Control whether to enforce that the "boundary" of the grid is output in
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* the subsampling process. (This ivar only has effect when the SampleRate
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* in any direction is not equal to 1.) When this ivar IncludeBoundary is
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* on, the subsampling will always include the boundary of the grid even
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* though the sample rate is not an even multiple of the grid
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* dimensions. (By default IncludeBoundary is off.)
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*/
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vtkSetMacro(IncludeBoundary,int);
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vtkGetMacro(IncludeBoundary,int);
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vtkBooleanMacro(IncludeBoundary,int);
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//@}
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protected:
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vtkExtractRectilinearGrid();
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~vtkExtractRectilinearGrid();
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virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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virtual int RequestInformation(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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virtual int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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/**
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* Implementation for RequestData using a specified VOI. This is because the
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* parallel filter needs to muck around with the VOI to get spacing and
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* partitioning to play nice. The VOI is calculated from the output
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* data object's extents in this implementation.
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*/
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bool RequestDataImpl(vtkInformationVector **inputVector,
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vtkInformationVector *outputVector);
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int VOI[6];
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int SampleRate[3];
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int IncludeBoundary;
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vtkExtractStructuredGridHelper* Internal;
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private:
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vtkExtractRectilinearGrid(const vtkExtractRectilinearGrid&) VTK_DELETE_FUNCTION;
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void operator=(const vtkExtractRectilinearGrid&) VTK_DELETE_FUNCTION;
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};
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#endif
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