Method InitEdgeInsertion

Common/DataModel/vtkEdgeTable.cxx:141–191

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//------------------------------------------------------------------------------
int vtkEdgeTable::InitEdgeInsertion(vtkIdType numPoints, int storeAttributes)
{
  vtkIdType i;

  numPoints = (numPoints < 1 ? 1 : numPoints);

  // Discard old memory if not enough has been previously allocated
  this->StoreAttributes = storeAttributes;
  this->TableMaxId = -1;

  if (numPoints > this->TableSize)
  {
    this->Initialize();
    this->Table = new vtkIdList*[numPoints];
    for (i = 0; i < numPoints; i++)
    {
      this->Table[i] = nullptr;
    }

    if (this->StoreAttributes == 1)
    {
      this->Attributes = new vtkIdList*[numPoints];
      for (i = 0; i < numPoints; i++)
      {
        this->Attributes[i] = nullptr;
      }
    }
    else if (this->StoreAttributes == 2)
    {
      this->PointerAttributes = new vtkVoidArray*[numPoints];
      for (i = 0; i < numPoints; i++)
      {
        this->PointerAttributes[i] = nullptr;
      }
    }
    this->TableSize = numPoints;
  }

  // Otherwise, reuse the old memory
  else
  {
    this->Reset();
  }

  this->Position[0] = 0;
  this->Position[1] = -1;

  this->NumberOfEdges = 0;

  return 1;
}

//------------------------------------------------------------------------------
// Return non-negative if edge (p1,p2) is an edge; otherwise -1.