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74 lines
2.8 KiB
74 lines
2.8 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkImageStencilSource.h,v $
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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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// .NAME vtkImageStencilSource - helper class for clipping images
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// .SECTION Description
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// vtkImageStencilSource is a helper class for vtkImageToImageFilter
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// classes. Given a clipping object such as a vtkImplicitFunction, it
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// will set up a list of clipping extents for each x-row through the
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// image data. The extents for each x-row can be retrieved via the
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// GetNextExtent() method after the extent lists have been built
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// with the BuildExtents() method. For large images, using clipping
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// extents is much more memory efficient (and slightly more time-efficient)
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// than building a mask. This class can be subclassed to allow clipping
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// with objects other than vtkImplicitFunction.
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// .SECTION see also
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// vtkImplicitFunction vtkImageStencil vtkPolyDataToImageStencil
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#ifndef __vtkImageStencilSource_h
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#define __vtkImageStencilSource_h
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#include "vtkAlgorithm.h"
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class vtkImageStencilData;
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class VTK_IMAGING_EXPORT vtkImageStencilSource : public vtkAlgorithm
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{
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public:
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static vtkImageStencilSource *New();
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vtkTypeRevisionMacro(vtkImageStencilSource, vtkAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Get or set the output for this source.
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void SetOutput(vtkImageStencilData *output);
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vtkImageStencilData *GetOutput();
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// Description:
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// see vtkAlgorithm for details
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virtual int ProcessRequest(vtkInformation*,
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vtkInformationVector**,
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vtkInformationVector*);
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protected:
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vtkImageStencilSource();
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~vtkImageStencilSource();
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virtual int RequestData(vtkInformation *, vtkInformationVector **,
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vtkInformationVector *);
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virtual int RequestInformation(vtkInformation *, vtkInformationVector **,
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vtkInformationVector *) { return 1; }
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virtual int RequestUpdateExtent(vtkInformation *, vtkInformationVector **,
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vtkInformationVector *) { return 1; }
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vtkImageStencilData *AllocateOutputData(vtkDataObject *out, int* updateExt);
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virtual int FillOutputPortInformation(int, vtkInformation*);
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private:
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vtkImageStencilSource(const vtkImageStencilSource&); // Not implemented.
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void operator=(const vtkImageStencilSource&); // Not implemented.
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};
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#endif
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