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63 lines
2.5 KiB
63 lines
2.5 KiB
2 years ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkCastToConcrete.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 vtkCastToConcrete - works around type-checking limitations
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// .SECTION Description
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// vtkCastToConcrete is a filter that works around type-checking limitations
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// in the filter classes. Some filters generate abstract types on output,
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// and cannot be connected to the input of filters requiring a concrete
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// input type. For example, vtkElevationFilter generates vtkDataSet for output,
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// and cannot be connected to vtkDecimate, because vtkDecimate requires
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// vtkPolyData as input. This is true even though (in this example) the input
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// to vtkElevationFilter is of type vtkPolyData, and you know the output of
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// vtkElevationFilter is the same type as its input.
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//
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// vtkCastToConcrete performs run-time checking to insure that output type
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// is of the right type. An error message will result if you try to cast
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// an input type improperly. Otherwise, the filter performs the appropriate
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// cast and returns the data.
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// .SECTION Caveats
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// You must specify the input before you can get the output. Otherwise an
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// error results.
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// .SECTION See Also
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// vtkDataSetAlgorithm vtkPointSetToPointSetFilter
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#ifndef __vtkCastToConcrete_h
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#define __vtkCastToConcrete_h
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#include "vtkDataSetAlgorithm.h"
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class VTK_FILTERING_EXPORT vtkCastToConcrete : public vtkDataSetAlgorithm
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{
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public:
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static vtkCastToConcrete *New();
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vtkTypeRevisionMacro(vtkCastToConcrete,vtkDataSetAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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protected:
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vtkCastToConcrete() {};
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~vtkCastToConcrete() {};
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virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *); //insures compatibility; satisfies abstract api in vtkFilter
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virtual int RequestInformation(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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private:
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vtkCastToConcrete(const vtkCastToConcrete&); // Not implemented.
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void operator=(const vtkCastToConcrete&); // Not implemented.
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};
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#endif
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