You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
3.7 KiB
94 lines
3.7 KiB
/*=========================================================================
|
|
|
|
Program: Visualization Toolkit
|
|
Module: $RCSfile: vtkExtractGrid.h,v $
|
|
|
|
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
|
|
All rights reserved.
|
|
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
|
|
|
|
This software is distributed WITHOUT ANY WARRANTY; without even
|
|
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
PURPOSE. See the above copyright notice for more information.
|
|
|
|
=========================================================================*/
|
|
// .NAME vtkExtractGrid - select piece (e.g., volume of interest) and/or subsample structured grid dataset
|
|
|
|
// .SECTION Description
|
|
// vtkExtractGrid is a filter that selects a portion of an input structured
|
|
// grid dataset, or subsamples an input dataset. (The selected portion of
|
|
// interested is referred to as the Volume Of Interest, or VOI.) The output of
|
|
// this filter is a structured grid dataset. The filter treats input data of
|
|
// any topological dimension (i.e., point, line, image, or volume) and can
|
|
// generate output data of any topological dimension.
|
|
//
|
|
// To use this filter set the VOI ivar which are i-j-k min/max indices that
|
|
// specify a rectangular region in the data. (Note that these are 0-offset.)
|
|
// You can also specify a sampling rate to subsample the data.
|
|
//
|
|
// Typical applications of this filter are to extract a plane from a grid for
|
|
// contouring, subsampling large grids to reduce data size, or extracting
|
|
// regions of a grid with interesting data.
|
|
|
|
// .SECTION See Also
|
|
// vtkGeometryFilter vtkExtractGeometry vtkExtractVOI
|
|
// vtkStructuredGridGeometryFilter
|
|
|
|
#ifndef __vtkExtractGrid_h
|
|
#define __vtkExtractGrid_h
|
|
|
|
#include "vtkStructuredGridAlgorithm.h"
|
|
|
|
class VTK_GRAPHICS_EXPORT vtkExtractGrid : public vtkStructuredGridAlgorithm
|
|
{
|
|
public:
|
|
static vtkExtractGrid *New();
|
|
vtkTypeRevisionMacro(vtkExtractGrid,vtkStructuredGridAlgorithm);
|
|
void PrintSelf(ostream& os, vtkIndent indent);
|
|
|
|
// Description:
|
|
// Specify i-j-k (min,max) pairs to extract. The resulting structured grid
|
|
// dataset can be of any topological dimension (i.e., point, line, plane,
|
|
// or 3D grid).
|
|
vtkSetVector6Macro(VOI,int);
|
|
vtkGetVectorMacro(VOI,int,6);
|
|
|
|
// Description:
|
|
// Set the sampling rate in the i, j, and k directions. If the rate is > 1,
|
|
// then the resulting VOI will be subsampled representation of the input.
|
|
// For example, if the SampleRate=(2,2,2), every other point will be
|
|
// selected, resulting in a volume 1/8th the original size.
|
|
vtkSetVector3Macro(SampleRate, int);
|
|
vtkGetVectorMacro(SampleRate, int, 3);
|
|
|
|
// Description:
|
|
// Control whether to enforce that the "boundary" of the grid is output in
|
|
// the subsampling process. (This ivar only has effect when the SampleRate
|
|
// in any direction is not equal to 1.) When this ivar IncludeBoundary is
|
|
// on, the subsampling will always include the boundary of the grid even
|
|
// though the sample rate is not an even multiple of the grid
|
|
// dimensions. (By default IncludeBoundary is off.)
|
|
vtkSetMacro(IncludeBoundary,int);
|
|
vtkGetMacro(IncludeBoundary,int);
|
|
vtkBooleanMacro(IncludeBoundary,int);
|
|
|
|
protected:
|
|
vtkExtractGrid();
|
|
~vtkExtractGrid() {};
|
|
|
|
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
|
|
virtual int RequestInformation(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
|
|
virtual int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
|
|
|
|
int VOI[6];
|
|
int SampleRate[3];
|
|
int IncludeBoundary;
|
|
|
|
private:
|
|
vtkExtractGrid(const vtkExtractGrid&); // Not implemented.
|
|
void operator=(const vtkExtractGrid&); // Not implemented.
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
|