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99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkTrivialProducer.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 vtkTrivialProducer
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* @brief Producer for stand-alone data objects.
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*
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* vtkTrivialProducer allows stand-alone data objects to be connected
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* as inputs in a pipeline. All data objects that are connected to a
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* pipeline involving vtkAlgorithm must have a producer. This trivial
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* producer allows data objects that are hand-constructed in a program
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* without another vtk producer to be connected.
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*/
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#ifndef vtkTrivialProducer_h
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#define vtkTrivialProducer_h
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#include "vtkAlgorithm.h"
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#include "vtkCommonExecutionModelModule.h" // For export macro
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class vtkDataObject;
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class VTKCOMMONEXECUTIONMODEL_EXPORT vtkTrivialProducer : public vtkAlgorithm
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{
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public:
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static vtkTrivialProducer* New();
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vtkTypeMacro(vtkTrivialProducer, vtkAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Process upstream/downstream requests trivially. The associated
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* output data object is never modified, but it is queried to
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* fulfill requests.
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*/
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vtkTypeBool ProcessRequest(
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vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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/**
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* Set the data object that is "produced" by this producer. It is
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* never really modified.
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*/
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virtual void SetOutput(vtkDataObject* output);
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/**
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* The modified time of this producer is the newer of this object or
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* the assigned output.
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*/
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vtkMTimeType GetMTime() override;
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//@{
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/**
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* Set the whole extent to use for the data this producer is producing.
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* This may be different than the extent of the output data when
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* the trivial producer is used in parallel.
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*/
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vtkSetVector6Macro(WholeExtent, int);
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vtkGetVector6Macro(WholeExtent, int);
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//@}
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/**
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* This method can be used to copy meta-data from an existing data
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* object to an information object. For example, whole extent,
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* image data spacing, origin etc.
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*/
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static void FillOutputDataInformation(vtkDataObject* output, vtkInformation* outInfo);
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protected:
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vtkTrivialProducer();
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~vtkTrivialProducer() override;
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int FillInputPortInformation(int, vtkInformation*) override;
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int FillOutputPortInformation(int, vtkInformation*) override;
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vtkExecutive* CreateDefaultExecutive() override;
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// The real data object.
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vtkDataObject* Output;
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int WholeExtent[6];
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void ReportReferences(vtkGarbageCollector*) override;
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private:
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vtkTrivialProducer(const vtkTrivialProducer&) = delete;
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void operator=(const vtkTrivialProducer&) = delete;
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};
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#endif
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