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/*=========================================================================
Program: Visualization Toolkit
Module: vtkEnsembleSource.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.
=========================================================================*/
// .NAME vtkEnsembleSource - source that manages dataset ensembles
// .SECTION Description
// vtkEnsembleSource manages a collection of data sources in order to
// represent a dataset ensemble. It has the ability to provide meta-data
// about the ensemble in the form of a table, using the META_DATA key
// as well as accept a pipeline request using the UPDATE_MEMBER key.
// Note that it is expected that all ensemble members produce data of the
// same type.
#ifndef vtkEnsembleSource_h
#define vtkEnsembleSource_h
#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkAlgorithm.h"
struct vtkEnsembleSourceInternal;
class vtkTable;
class vtkInformationDataObjectMetaDataKey;
class vtkInformationIntegerRequestKey;
class vtkInformationIntegerKey;
class VTKCOMMONEXECUTIONMODEL_EXPORT vtkEnsembleSource : public vtkAlgorithm
{
public:
static vtkEnsembleSource *New();
vtkTypeMacro(vtkEnsembleSource,vtkAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Descriptions:
// Add an algorithm (source) that will produce the next ensemble member.
// This algorithm will be passed the REQUEST_INFORMATION, REQUEST_UPDATE_EXTENT
// and REQUEST_DATA pipeline passes for execution.
void AddMember(vtkAlgorithm*);
// Description:
// Removes all ensemble members.
void RemoveAllMembers();
// Description:
// Returns the number of ensemble members.
unsigned int GetNumberOfMembers();
// Description:
// Set/Get the current ensemble member to process. Note that this data member
// will not be used if the UPDATE_MEMBER key is present in the pipeline. Also,
// this data member may be removed in the future. Unless it is absolutely necessary
// to use this data member, use the UPDATE_MEMBER key instead.
vtkSetMacro(CurrentMember, unsigned int);
vtkGetMacro(CurrentMember, unsigned int);
// Description:
// Set the meta-data that will be propagated downstream. Make sure that this table
// has as many rows as the ensemble members and the meta-data for each row matches
// the corresponding ensemble source.
void SetMetaData(vtkTable*);
// Description:
// Meta-data for the ensemble. This is set with SetMetaData.
static vtkInformationDataObjectMetaDataKey* META_DATA();
// Description:
// Key used to request a particular ensemble member.
static vtkInformationIntegerRequestKey* UPDATE_MEMBER();
protected:
vtkEnsembleSource();
~vtkEnsembleSource();
static vtkInformationIntegerKey* DATA_MEMBER();
friend class vtkInformationEnsembleMemberRequestKey;
virtual int ProcessRequest(vtkInformation *request,
vtkInformationVector **inputVector,
vtkInformationVector *outputVector);
virtual int FillOutputPortInformation(int, vtkInformation*);
vtkAlgorithm* GetCurrentReader(vtkInformation*);
vtkEnsembleSourceInternal* Internal;
unsigned int CurrentMember;
vtkTable* MetaData;
private:
vtkEnsembleSource(const vtkEnsembleSource&); // Not implemented.
void operator=(const vtkEnsembleSource&); // Not implemented.
};
#endif
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