Method InitWithPoints

Testing/GenericBridge/vtkBridgeCellIteratorOne.cxx:198–263

------------------------------------------------------------------------------ Description: Used internally by vtkBridgeCell. Iterate on a boundary cell (defined by its points `pts' with coordinates `coords', dimension `dim' and unique id `cellid') of a cell. \pre coords_exist: coords!=0 \pre pts_exist: pts!=0 \pre valid_dim: dim>=0 && dim<=2 \pre valid_points: pts->GetNumberOfIds()>dim

// \pre valid_dim: dim>=0 && dim<=2
// \pre valid_points: pts->GetNumberOfIds()>dim
void vtkBridgeCellIteratorOne::InitWithPoints(
  vtkPoints* coords, vtkIdList* pts, int dim, vtkIdType cellid)
{
  assert("pre: coords_exist" && coords != nullptr);
  assert("pre: pts_exist" && pts != nullptr);
  assert("pre: valid_dim" && dim >= 0 && dim <= 2);
  assert("pre: valid_points" && pts->GetNumberOfIds() > dim);

  if ((this->DataSet == nullptr) && (this->InternalCell == nullptr))
  {
    // previous mode was InitWithOneCell(vtkBridgeCell *c)
    //    this->Cell->Delete();
    this->Cell = nullptr;
  }

  if (this->Cell == nullptr)
  {
    // first init or previous mode was InitWithOneCell(vtkBridgeCell *c)
    this->Cell = vtkBridgeCell::New();
  }

  vtkCell* cell = nullptr;

  switch (dim)
  {
    case 2:
      if (pts->GetNumberOfIds() == 3)
      {
        cell = vtkTriangle::New();
      }
      else
      {
        cell = vtkPolygon::New();
      }
      break;
    case 1:
      // line or polyline
      if (pts->GetNumberOfIds() == 2)
      {
        cell = vtkLine::New();
      }
      else
      {
        cell = vtkPolyLine::New();
      }
      break;
    case 0:
      // vertex polyvertex
      if (pts->GetNumberOfIds() == 1)
      {
        cell = vtkVertex::New();
      }
      else
      {
        cell = vtkPolyVertex::New();
      }
      break;
  }