Method InitializeGhostData

Filters/Geometry/vtkStructuredGridConnectivity.cxx:1207–1248

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//------------------------------------------------------------------------------
void vtkStructuredGridConnectivity::InitializeGhostData(int gridID)
{
  // Sanity check
  assert("pre: gridID is out-of-bounds!" && (gridID >= 0) &&
    (gridID < static_cast<int>(this->NumberOfGrids)));
  assert("pre: GhostedPointData vector has not been properly allocated!" &&
    (this->NumberOfGrids == this->GhostedGridPointData.size()));
  assert("pre: GhostedCellData vector has not been properly allocated!" &&
    (this->NumberOfGrids == this->GhostedGridCellData.size()));
  assert("pre: Grid has no registered point data!" && (this->GridPointData[gridID] != nullptr));
  assert("pre: Grid has no registered cell data!" && (this->GridCellData[gridID] != nullptr));

  // STEP 0: Get the ghosted grid extent
  int GhostedGridExtent[6];
  this->GetGhostedGridExtent(gridID, GhostedGridExtent);

  // STEP 1: Get the number of nodes/cells in the ghosted extent
  int numNodes = vtkStructuredData::GetNumberOfPoints(GhostedGridExtent, this->DataDescription);
  int numCells = vtkStructuredData::GetNumberOfCells(GhostedGridExtent, this->DataDescription);

  // STEP 2: Allocate coordinates if the grid
  if (this->GridPoints[gridID] != nullptr)
  {

    if (this->GhostedGridPoints[gridID] != nullptr)
    {
      this->GhostedGridPoints[gridID]->Delete();
    }

    this->GhostedGridPoints[gridID] = vtkPoints::New();
    this->GhostedGridPoints[gridID]->SetDataTypeToDouble();
    this->GhostedGridPoints[gridID]->SetNumberOfPoints(numNodes);
  }

  // STEP 3: Allocate point & cell data
  this->GhostedGridPointData[gridID] = vtkPointData::New();
  this->GhostedGridCellData[gridID] = vtkCellData::New();

  this->AllocatePointData(
    this->GridPointData[gridID], numNodes, this->GhostedGridPointData[gridID]);
  this->AllocateCellData(this->GridCellData[gridID], numCells, this->GhostedGridCellData[gridID]);
}

//------------------------------------------------------------------------------
void vtkStructuredGridConnectivity::CopyCoordinates(