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69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkCastToConcrete.h
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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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/**
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* @class vtkCastToConcrete
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* @brief works around type-checking limitations
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*
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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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*
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* @warning
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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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*
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* @sa
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* vtkDataSetAlgorithm vtkPointSetToPointSetFilter
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*/
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#ifndef vtkCastToConcrete_h
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#define vtkCastToConcrete_h
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#include "vtkCommonExecutionModelModule.h" // For export macro
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#include "vtkDataSetAlgorithm.h"
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class VTKCOMMONEXECUTIONMODEL_EXPORT vtkCastToConcrete : public vtkDataSetAlgorithm
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{
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public:
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static vtkCastToConcrete* New();
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vtkTypeMacro(vtkCastToConcrete, vtkDataSetAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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protected:
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vtkCastToConcrete() {}
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~vtkCastToConcrete() override {}
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int RequestData(vtkInformation*, vtkInformationVector**,
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vtkInformationVector*) override; // insures compatibility; satisfies abstract api in vtkFilter
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int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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private:
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vtkCastToConcrete(const vtkCastToConcrete&) = delete;
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void operator=(const vtkCastToConcrete&) = delete;
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};
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#endif
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