vtkStreamingDemandDrivenPipeline.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkStreamingDemandDrivenPipeline.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkStreamingDemandDrivenPipeline_h
#define vtkStreamingDemandDrivenPipeline_h
 
#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkDemandDrivenPipeline.h"
 
#define VTK_UPDATE_EXTENT_COMBINE 1
#define VTK_UPDATE_EXTENT_REPLACE 2
 
class vtkInformationDoubleKey;
class vtkInformationDoubleVectorKey;
class vtkInformationIdTypeKey;
class vtkInformationIntegerKey;
class vtkInformationIntegerVectorKey;
class vtkInformationIterator;
class vtkInformationObjectBaseKey;
class vtkInformationStringKey;
class vtkInformationStringKey;
class vtkInformationUnsignedLongKey;
 
class VTKCOMMONEXECUTIONMODEL_EXPORT vtkStreamingDemandDrivenPipeline
  : public vtkDemandDrivenPipeline
{
public:
  static vtkStreamingDemandDrivenPipeline* New();
  vtkTypeMacro(vtkStreamingDemandDrivenPipeline, vtkDemandDrivenPipeline);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  vtkTypeBool ProcessRequest(
    vtkInformation* request, vtkInformationVector** inInfo, vtkInformationVector* outInfo) override;
 
 
  vtkTypeBool Update() override;
  vtkTypeBool Update(int port) override;
  virtual vtkTypeBool UpdateWholeExtent();
 
  virtual vtkTypeBool Update(int port, vtkInformationVector* requests);
 
  int PropagateUpdateExtent(int outputPort);
 
 
  int PropagateTime(int outputPort);
  int UpdateTimeDependentInformation(int outputPort);
 
 
  static int SetWholeExtent(vtkInformation*, int extent[6]);
  static void GetWholeExtent(vtkInformation*, int extent[6]);
  static int* GetWholeExtent(vtkInformation*) VTK_SIZEHINT(6);
 
 
  int SetRequestExactExtent(int port, int flag);
  int GetRequestExactExtent(int port);
 
  static vtkInformationRequestKey* REQUEST_UPDATE_EXTENT();
 
  static vtkInformationRequestKey* REQUEST_UPDATE_TIME();
  static vtkInformationRequestKey* REQUEST_TIME_DEPENDENT_INFORMATION();
 
  static vtkInformationIntegerKey* CONTINUE_EXECUTING();
 
  static vtkInformationIntegerKey* UPDATE_EXTENT_INITIALIZED();
  static vtkInformationIntegerVectorKey* UPDATE_EXTENT();
  static vtkInformationIntegerKey* UPDATE_PIECE_NUMBER();
  static vtkInformationIntegerKey* UPDATE_NUMBER_OF_PIECES();
  static vtkInformationIntegerKey* UPDATE_NUMBER_OF_GHOST_LEVELS();
 
  static vtkInformationIntegerVectorKey* COMBINED_UPDATE_EXTENT();
 
  static vtkInformationIntegerVectorKey* WHOLE_EXTENT();
 
  static vtkInformationIntegerKey* UNRESTRICTED_UPDATE_EXTENT();
 
  static vtkInformationIntegerKey* EXACT_EXTENT();
 
  static vtkInformationDoubleVectorKey* TIME_STEPS();
 
  static vtkInformationDoubleVectorKey* TIME_RANGE();
 
  static vtkInformationDoubleKey* UPDATE_TIME_STEP();
 
  static vtkInformationIntegerKey* TIME_DEPENDENT_INFORMATION();
 
  static vtkInformationDoubleVectorKey* BOUNDS();
 
 
  static void GetUpdateExtent(vtkInformation*, int extent[6]);
  static int* GetUpdateExtent(vtkInformation*);
 
 
  static int GetUpdatePiece(vtkInformation*);
  static int GetUpdateNumberOfPieces(vtkInformation*);
  static int GetUpdateGhostLevel(vtkInformation*);
 
protected:
  vtkStreamingDemandDrivenPipeline();
  ~vtkStreamingDemandDrivenPipeline() override;
 
  static vtkInformationDoubleKey* PREVIOUS_UPDATE_TIME_STEP();
 
  // Does the time request correspond to what is in the data?
  // Returns 0 if yes, 1 otherwise.
  virtual int NeedToExecuteBasedOnTime(vtkInformation* outInfo, vtkDataObject* dataObject);
 
  // Setup default information on the output after the algorithm
  // executes information.
  int ExecuteInformation(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec) override;
 
  // Copy information for the given request.
  void CopyDefaultInformation(vtkInformation* request, int direction,
    vtkInformationVector** inInfoVec, vtkInformationVector* outInfoVec) override;
 
  // Helper to check output information before propagating it to inputs.
  virtual int VerifyOutputInformation(
    int outputPort, vtkInformationVector** inInfoVec, vtkInformationVector* outInfoVec);
 
  // Override this check to account for update extent.
  int NeedToExecuteData(
    int outputPort, vtkInformationVector** inInfoVec, vtkInformationVector* outInfoVec) override;
 
  // Override these to handle the continue-executing option.
  void ExecuteDataStart(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec) override;
  void ExecuteDataEnd(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec) override;
 
  // Override this to handle cropping and ghost levels.
  void MarkOutputsGenerated(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec) override;
 
  // Remove update/whole extent when resetting pipeline information.
  void ResetPipelineInformation(int port, vtkInformation*) override;
 
  // Flag for when an algorithm returns with CONTINUE_EXECUTING in the
  // request.
  int ContinueExecuting;
 
  vtkInformation* UpdateExtentRequest;
  vtkInformation* UpdateTimeRequest;
  vtkInformation* TimeDependentInformationRequest;
  vtkInformationIterator* InformationIterator;
 
  // did the most recent PUE do anything ?
  int LastPropogateUpdateExtentShortCircuited;
 
private:
  vtkStreamingDemandDrivenPipeline(const vtkStreamingDemandDrivenPipeline&) = delete;
  void operator=(const vtkStreamingDemandDrivenPipeline&) = delete;
};
 
#endif