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/*=========================================================================
Program: Visualization Toolkit
Module: vtkParticleTracerBase.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.
=========================================================================*/
/**
* @class vtkParticleTracerBase
* @brief A parallel particle tracer for vector fields
*
* vtkPParticleTracerBase is the base class for parallel filters that advect particles
* in a vector field. Note that the input vtkPointData structure must
* be identical on all datasets.
* @sa
* vtkRibbonFilter vtkRuledSurfaceFilter vtkInitialValueProblemSolver
* vtkRungeKutta2 vtkRungeKutta4 vtkRungeKutta45 vtkStreamTracer
*/
#ifndef vtkPParticleTracerBase_h
#define vtkPParticleTracerBase_h
#include "vtkSmartPointer.h" // For protected ivars.
#include "vtkParticleTracerBase.h"
#include <vector> // STL Header
#include "vtkFiltersParallelFlowPathsModule.h" // For export macro
class VTKFILTERSPARALLELFLOWPATHS_EXPORT vtkPParticleTracerBase : public vtkParticleTracerBase
{
public:
vtkTypeMacro(vtkPParticleTracerBase,vtkParticleTracerBase);
void PrintSelf(ostream& os, vtkIndent indent);
//@{
/**
* Set/Get the controller used when sending particles between processes
* The controller must be an instance of vtkMPIController.
*/
virtual void SetController(vtkMultiProcessController* controller);
vtkGetObjectMacro(Controller, vtkMultiProcessController);
//@}
protected:
struct RemoteParticleInfo
{
vtkParticleTracerBaseNamespace::ParticleInformation Current;
vtkParticleTracerBaseNamespace::ParticleInformation Previous;
vtkSmartPointer<vtkPointData> PreviousPD;
};
typedef std::vector<RemoteParticleInfo> RemoteParticleVector;
vtkPParticleTracerBase();
~vtkPParticleTracerBase();
virtual int RequestUpdateExtent(vtkInformation* request,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector);
//
virtual vtkPolyData* Execute(vtkInformationVector** inputVector);
virtual bool SendParticleToAnotherProcess(vtkParticleTracerBaseNamespace::ParticleInformation & info,
vtkParticleTracerBaseNamespace::ParticleInformation & previous,
vtkPointData*);
/**
* Before starting the particle trace, classify
* all the injection/seed points according to which processor
* they belong to. This saves us retesting at every injection time
* providing 1) The volumes are static, 2) the seed points are static
* If either are non static, then this step is skipped.
*/
virtual void AssignSeedsToProcessors(double time,
vtkDataSet *source, int sourceID, int ptId,
vtkParticleTracerBaseNamespace::ParticleVector &localSeedPoints,
int &localAssignedCount);
/**
* give each one a uniqu ID. We need to use MPI to find out
* who is using which numbers.
*/
virtual void AssignUniqueIds(
vtkParticleTracerBaseNamespace::ParticleVector &localSeedPoints);
/**
* this is used during classification of seed points and also between iterations
* of the main loop as particles leave each processor domain. Returns
* true if particles were migrated to any new process.
*/
virtual bool SendReceiveParticles(RemoteParticleVector &outofdomain, RemoteParticleVector &received);
virtual bool UpdateParticleListFromOtherProcesses();
/**
* Method that checks that the input arrays are ordered the
* same on all data sets. This needs to be true for all
* blocks in a composite data set as well as across all processes.
*/
virtual bool IsPointDataValid(vtkDataObject* input);
//
//
// MPI controller needed when running in parallel
vtkMultiProcessController* Controller;
// List used for transmitting between processors during parallel operation
RemoteParticleVector MPISendList;
RemoteParticleVector Tail; //this is to receive the "tails" of traces from other processes
private:
vtkPParticleTracerBase(const vtkPParticleTracerBase&) VTK_DELETE_FUNCTION;
void operator=(const vtkPParticleTracerBase&) VTK_DELETE_FUNCTION;
};
#endif
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