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/*=========================================================================
Program: Visualization Toolkit
Module: vtkStructuredGridGeometryFilter.h
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 vtkStructuredGridGeometryFilter - extract geometry for structured grid
// .SECTION Description
// vtkStructuredGridGeometryFilter is a filter that extracts geometry from a
// structured grid. By specifying appropriate i-j-k indices, it is possible
// to extract a point, a curve, a surface, or a "volume". Depending upon the
// type of data, the curve and surface may be curved or planar. (The volume
// is actually a (n x m x o) region of points.)
//
// The extent specification is zero-offset. That is, the first k-plane in
// a 50x50x50 structured grid is given by (0,49, 0,49, 0,0).
//
// The output of this filter is affected by the structured grid blanking.
// If blanking is on, and a blanking array defined, then those cells
// attached to blanked points are not output. (Blanking is a property of
// the input vtkStructuredGrid.)
// .SECTION Caveats
// If you don't know the dimensions of the input dataset, you can use a large
// number to specify extent (the number will be clamped appropriately). For
// example, if the dataset dimensions are 50x50x50, and you want a the fifth
// k-plane, you can use the extents (0,100, 0,100, 4,4). The 100 will
// automatically be clamped to 49.
// .SECTION See Also
// vtkGeometryFilter vtkExtractGrid vtkStructuredGrid
#ifndef vtkStructuredGridGeometryFilter_h
#define vtkStructuredGridGeometryFilter_h
#include "vtkFiltersGeometryModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
class VTKFILTERSGEOMETRY_EXPORT vtkStructuredGridGeometryFilter : public vtkPolyDataAlgorithm
{
public:
static vtkStructuredGridGeometryFilter *New();
vtkTypeMacro(vtkStructuredGridGeometryFilter,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Get the extent in topological coordinate range (imin,imax, jmin,jmax,
// kmin,kmax).
vtkGetVectorMacro(Extent,int,6);
// Description:
// Specify (imin,imax, jmin,jmax, kmin,kmax) indices.
void SetExtent(int iMin, int iMax, int jMin, int jMax, int kMin, int kMax);
// Description:
// Specify (imin,imax, jmin,jmax, kmin,kmax) indices in array form.
void SetExtent(int extent[6]);
protected:
vtkStructuredGridGeometryFilter();
~vtkStructuredGridGeometryFilter() {}
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
virtual int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
virtual int FillInputPortInformation(int port, vtkInformation *info);
int Extent[6];
private:
vtkStructuredGridGeometryFilter(const vtkStructuredGridGeometryFilter&); // Not implemented.
void operator=(const vtkStructuredGridGeometryFilter&); // Not implemented.
};
#endif
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