vtkMultiTimeStepAlgorithm.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkMultiTimeStepAlgorithm.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 vtkMultiTimeStepAlgorithm_h
#define vtkMultiTimeStepAlgorithm_h
 
#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkAlgorithm.h"
#include "vtkSmartPointer.h" //needed for a private variable
 
#include <vector> //needed for a private variable
#include "vtkDataObject.h" // needed for the smart pointer
 
class vtkInformationDoubleVectorKey;
class vtkMultiBlockDataSet;
class VTKCOMMONEXECUTIONMODEL_EXPORT vtkMultiTimeStepAlgorithm : public vtkAlgorithm
{
public:
  static vtkMultiTimeStepAlgorithm *New();
  vtkTypeMacro(vtkMultiTimeStepAlgorithm,vtkAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
protected:
  vtkMultiTimeStepAlgorithm();
 
  ~vtkMultiTimeStepAlgorithm()
  {
  };
 
  static vtkInformationDoubleVectorKey* UPDATE_TIME_STEPS();
 
 
 
  virtual int RequestDataObject(vtkInformation*, vtkInformationVector**,  vtkInformationVector*)
  {
    return 1;
  };
 
 
  virtual int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*)
  {
    return 1;
  };
 
 
  virtual int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*)
  {
    return 1;
  }
 
 
  virtual int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*)
  {
    return 1;
  }
 
  int ProcessRequest(vtkInformation*, vtkInformationVector**, vtkInformationVector*);
 
  bool CacheData;
  unsigned int NumberOfCacheEntries;
 
private:
  vtkMultiTimeStepAlgorithm(const vtkMultiTimeStepAlgorithm&);  // Not implemented.
  void operator=(const vtkMultiTimeStepAlgorithm&);  // Not implemented.
 
 
  vtkSmartPointer<vtkMultiBlockDataSet> MDataSet; //stores all the temporal data sets
  int RequestUpdateIndex; //keep track of the time looping index
  std::vector<double> UpdateTimeSteps;  //store the requested time steps
 
  bool IsInCache(double time, size_t& idx);
 
  struct TimeCache
  {
  TimeCache(double time, vtkDataObject* data) : TimeValue(time), Data(data)
  {
  }
  double TimeValue;
  vtkSmartPointer<vtkDataObject> Data;
  };
 
  std::vector<TimeCache> Cache;
};
 
#endif