Method RunLoopFind

Filters/General/vtkLoopBooleanPolyDataFilter.cxx:1075–1178

Function for if the intersection is soft closed or open

// Function for if the intersection is soft closed or open
int vtkLoopBooleanPolyDataFilter::Impl::RunLoopFind(
  vtkIdType interPt, vtkIdType nextCell, bool* usedPt, simLoop* loop)
{
  vtkIdType prevPt = interPt;
  vtkIdType nextPt = interPt;
  vtkSmartPointer<vtkIdList> pointIds = vtkSmartPointer<vtkIdList>::New();
  vtkSmartPointer<vtkIdList> cellIds = vtkSmartPointer<vtkIdList>::New();

  IntersectionLines->GetCellPoints(nextCell, pointIds);
  if (pointIds->GetNumberOfIds() > 2)
  {
    vtkDebugWithObjectMacro(
      this->ParentFilter, << "Number Of Points is greater than 2 for first cell " << nextCell);
  }
  else if (pointIds->GetNumberOfIds() < 2)
  {
    vtkDebugWithObjectMacro(
      this->ParentFilter, << "Number Of Points is less than 2 for first cell " << nextCell);
  }

  if (pointIds->GetId(0) == nextPt)
  {
    nextPt = pointIds->GetId(1);
  }
  else
  {
    nextPt = pointIds->GetId(0);
  }
  simLine newline;
  newline.pt1 = prevPt;
  newline.pt2 = nextPt;
  newline.id = nextCell;
  loop->cells.push_back(newline);

  usedPt[nextPt] = true;
  while (nextPt != loop->cells.front().pt1)
  {
    IntersectionLines->GetPointCells(nextPt, cellIds);
    if (cellIds->GetNumberOfIds() > 2)
    {
      IntersectionCase = 1;
      vtkDebugWithObjectMacro(
        this->ParentFilter, << "Number Of Cells is greater than 2 for point " << nextPt);
      usedPt[nextPt] = false;
      nextCell = this->RunLoopTest(nextPt, nextCell, loop, usedPt);
      if (nextCell == -1)
      {
        break;
      }
      vtkDebugWithObjectMacro(this->ParentFilter, << "Next cell is " << nextCell);
    }
    else if (cellIds->GetNumberOfIds() < 2)
    {
      vtkDebugWithObjectMacro(
        this->ParentFilter, << "Number Of Cells is less than 2 for point " << nextPt);
      IntersectionCase = 2;
      return nextPt;
    }