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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkStructuredGridGeometryFilter
* @brief extract geometry for structured grid
*
* 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.)
*
* @warning
* 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.
*
* @sa
* vtkGeometryFilter vtkExtractGrid vtkStructuredGrid
*/
#ifndef vtkStructuredGridGeometryFilter_h
#define vtkStructuredGridGeometryFilter_h
#include "vtkFiltersGeometryModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
VTK_ABI_NAMESPACE_BEGIN
class VTKFILTERSGEOMETRY_EXPORT vtkStructuredGridGeometryFilter : public vtkPolyDataAlgorithm
{
public:
static vtkStructuredGridGeometryFilter* New();
vtkTypeMacro(vtkStructuredGridGeometryFilter, vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Get the extent in topological coordinate range (imin,imax, jmin,jmax,
* kmin,kmax).
*/
vtkGetVectorMacro(Extent, int, 6);
///@}
/**
* Specify (imin,imax, jmin,jmax, kmin,kmax) indices.
*/
void SetExtent(int iMin, int iMax, int jMin, int jMax, int kMin, int kMax);
/**
* Specify (imin,imax, jmin,jmax, kmin,kmax) indices in array form.
*/
void SetExtent(int extent[6]);
protected:
vtkStructuredGridGeometryFilter();
~vtkStructuredGridGeometryFilter() override = default;
int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int FillInputPortInformation(int port, vtkInformation* info) override;
int Extent[6];
private:
vtkStructuredGridGeometryFilter(const vtkStructuredGridGeometryFilter&) = delete;
void operator=(const vtkStructuredGridGeometryFilter&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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