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88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
3 weeks ago
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// -*- c++ -*-
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkTemporalStatistics.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 vtkStreamerBase
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* @brief Superclass for filters that stream input pipeline
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*
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*
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* This class can be used as a superclass for filters that want to
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* stream their input pipeline by making multiple execution passes.
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* The subclass needs to set NumberOfPasses to > 1 before execution (
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* usual in the constructor or in RequestInformation) to initiate
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* streaming. vtkStreamerBase will handle streaming while calling
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* ExecutePass() during each pass. CurrentIndex can be used to obtain
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* the index for the current pass. Finally, PostExecute() is called
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* after the last pass and can be used to cleanup any internal data
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* structures and create the actual output.
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*/
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#ifndef vtkStreamerBase_h
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#define vtkStreamerBase_h
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#include "vtkAlgorithm.h"
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#include "vtkFiltersCoreModule.h" // For export macro
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class VTKFILTERSCORE_EXPORT vtkStreamerBase : public vtkAlgorithm
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{
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public:
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vtkTypeMacro(vtkStreamerBase, vtkAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* see vtkAlgorithm for details
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*/
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vtkTypeBool ProcessRequest(
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vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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protected:
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vtkStreamerBase();
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~vtkStreamerBase() override;
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virtual int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*)
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{
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return 1;
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}
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/**
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* This is called by the superclass.
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* This is the method you should override.
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*/
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virtual int RequestUpdateExtent(
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vtkInformation*, vtkInformationVector**, vtkInformationVector*) = 0;
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virtual int RequestData(vtkInformation* request, vtkInformationVector** inputVector,
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vtkInformationVector* outputVector);
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// This method is called during each execution pass. Subclasses
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// should implement this to do actual work.
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virtual int ExecutePass(
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vtkInformationVector** inputVector, vtkInformationVector* outputVector) = 0;
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// This method is called after streaming is completed. Subclasses
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// can override this method to perform cleanup.
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virtual int PostExecute(vtkInformationVector**, vtkInformationVector*) { return 1; }
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unsigned int NumberOfPasses;
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unsigned int CurrentIndex;
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private:
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vtkStreamerBase(const vtkStreamerBase&) = delete;
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void operator=(const vtkStreamerBase&) = delete;
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};
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#endif //_vtkStreamerBase_h
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