vtkPUnstructuredGridConnectivity.h

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/*=========================================================================

 Program:   Visualization Toolkit
 Module:    vtkPStructuredGridConnectivity.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 VTKPUNSTRUCTUREDGRIDCONNECTIVITY_H_
#define VTKPUNSTRUCTUREDGRIDCONNECTIVITY_H_

#include "vtkFiltersParallelGeometryModule.h" // For export macro
#include "vtkObject.h"

// Forward Declarations
class vtkCell;
class vtkCellData;
class vtkIdList;
class vtkIdTypeArray;
class vtkMPIController;
class vtkMultiProcessStream;
class vtkPointData;
class vtkPoints;
class vtkUnstructuredGrid;

// Forward Declaration of internal data-structures
namespace vtk
{
namespace details
{

struct GridInfo;
struct MeshLinks;
struct CommunicationLinks;

} // END namespace details
} // END namespace vkt

class VTKFILTERSPARALLELGEOMETRY_EXPORT vtkPUnstructuredGridConnectivity :
  public vtkObject
{
public:
  static vtkPUnstructuredGridConnectivity* New();
  vtkTypeMacro(vtkPUnstructuredGridConnectivity,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(Controller,vtkMPIController*);
  vtkGetMacro(Controller,vtkMPIController*);


  vtkSetStringMacro(GlobalIDFieldName);
  vtkGetStringMacro(GlobalIDFieldName);


  vtkGetMacro(GhostedGrid,vtkUnstructuredGrid*);

  void RegisterGrid(vtkUnstructuredGrid* gridPtr);

  void BuildGhostZoneConnectivity();

  void UpdateGhosts();

protected:
  vtkPUnstructuredGridConnectivity();
  virtual ~vtkPUnstructuredGridConnectivity();

  char* GlobalIDFieldName;            // The field of the global IDs.
  vtkUnstructuredGrid* InputGrid;     // The input grid, to be ghosted.
  vtkUnstructuredGrid* GhostedGrid;   // This is the output from this class.
  vtkMPIController* Controller;       // Supplied MPI controller.

// BTX
  vtk::details::GridInfo* AuxiliaryData; // Data used to build the ghost zones.
  vtk::details::CommunicationLinks* CommLists; // Persistent comm lists.
// ETX


  void FillGhostZoneCells(
        const int neiRank,
        vtkCellData* ghostData,
        vtkIdType* cellIdx,
        const unsigned int numGhostCells);


  void FillGhostZoneNodes(
        const int neiRank,
        vtkPointData* ghostData,
        vtkIdType* globalIdx,
        const unsigned int numGhostNodes);

  void DeSerializeGhostZones();

  void CreatePersistentRcvBuffers();

  void SerializeGhostZones();

  void SynchLocalData();


  void EnqueueNodeLinks(
        const int rmtRank,
        const vtkIdType ghostCell,
        const vtkIdType adjCell,
        vtkIdList* shared);


  bool IsCellConnected(
      vtkCell* c,vtkIdType* globalId, const vtkIdType N,
      vtkIdType& adjCell,
      vtkIdList* sharedIds);


  void InsertGhostCellNodes(
        vtkCell* ghostCell,
        vtkIdTypeArray* ghostGridGlobalIdx,
        vtkIdType* globalIdArray,
        vtkUnstructuredGrid* bGrid,
        vtkIdType* cellPts);


  void ProcessRemoteGrid(
      const int rmtRank,vtkUnstructuredGrid* bGrid);

  void BuildGhostedGridAndCommLists();


  void SerializeUnstructuredGrid(
      vtkUnstructuredGrid* g, vtkMultiProcessStream& bytestream);


  void DeSerializeUnstructuredGrid(
      vtkUnstructuredGrid* g, vtkMultiProcessStream& bytestream);

  void WriteUnstructuredGrid(vtkUnstructuredGrid* grid, const char* fileName);

  void ExtractSurfaceMesh();

  void MarkFaces();


  void ExtractBoundaryCell(
      const vtkIdType cellIdx,
      const vtkIdType numCellNodes,
      vtkIdType* cellNodes,
      vtkPoints* nodes,
      vtkIdTypeArray* localIdx,
      vtkIdTypeArray* globaIdx
      );

  bool IsCellOnBoundary(vtkIdType* cellNodes, vtkIdType N);

  void ExchangeBoundaryGrids();

  void ExchangeBoundaryGridSizes(int size);

  void BoundingBoxCollision();

  void ExchangeGridBounds();

  void ExtractBoundaryGrid();

private:
  vtkPUnstructuredGridConnectivity(const vtkPUnstructuredGridConnectivity&); // Not implemented
  void operator=(const vtkPUnstructuredGridConnectivity&); // Not implemented
};

#endif /* VTKPUNSTRUCTUREDGRIDCONNECTIVITY_H_ */