Method AddToNewCellMap

Filters/General/vtkIntersectionPolyDataFilter.cxx:1259–1319

Add new cells to the mapping data array attached to the intersection lines

// Add new cells to the mapping data array attached to the intersection lines
void vtkIntersectionPolyDataFilter::Impl::AddToNewCellMap(
  int inputIndex, int interPtCount, int interPts[3], vtkPolyData* interLines, int numCurrCells)
{
  vtkIdList** cellIds;
  cellIds = new vtkIdList*[interPtCount];
  for (int i = 0; i < interPtCount; i++)
  {
    cellIds[i] = vtkIdList::New();
    vtkSmartPointer<vtkIdList> temp = vtkSmartPointer<vtkIdList>::New();
    interLines->GetPointCells(interPts[i], cellIds[i]);
    if (i > 0)
    {
      temp->DeepCopy(cellIds[i - 1]);
      temp->IntersectWith(cellIds[i]);
    }
    if (temp->GetNumberOfIds() > 0)
    {
      // For each id
      for (int j = 0; j < temp->GetNumberOfIds(); j++)
      {
        // If it hasn't already been set
        if (this->NewCellIds[inputIndex]->GetComponent(temp->GetId(j), 0) == -1)
        {
          // Add to new cell mapping data array on intersection lines
          this->NewCellIds[inputIndex]->InsertComponent(temp->GetId(j), 0, numCurrCells);
        }
        else
        {
          // Add to new cell mapping data array on intersection lines
          this->NewCellIds[inputIndex]->InsertComponent(temp->GetId(j), 1, numCurrCells);
        }
      }
    }
  }
  // If number of intersection points is more than two, intersection line
  if (interPtCount > 2)
  {
    cellIds[0]->IntersectWith(cellIds[interPtCount - 1]);
    if (cellIds[0]->GetNumberOfIds() > 0)
    {
      for (int j = 0; j < cellIds[0]->GetNumberOfIds(); j++)
      {
        if (this->NewCellIds[inputIndex]->GetComponent(cellIds[0]->GetId(j), 0) == -1)
        {
          // Add to new cell mapping data array on intersection lines
          this->NewCellIds[inputIndex]->InsertComponent(cellIds[0]->GetId(j), 0, numCurrCells);
        }
        else
        {
          // Add to new cell mapping data array on intersection lines
          this->NewCellIds[inputIndex]->InsertComponent(cellIds[0]->GetId(j), 1, numCurrCells);
        }
      }
    }
  }
  for (int i = 0; i < interPtCount; i++)
  {
    cellIds[i]->Delete();