Method ShowPickCell

Rendering/VR/vtkVRInteractorStyle.cxx:1371–1430

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//------------------------------------------------------------------------------
void vtkVRInteractorStyle::ShowPickCell(vtkCell* cell, vtkProp3D* prop)
{
  vtkNew<vtkPolyData> pd;
  vtkNew<vtkPoints> pdpts;
  pdpts->SetDataTypeToDouble();
  vtkNew<vtkCellArray> lines;

  this->PickActor->GetProperty()->SetColor(this->PickColor);

  int nedges = cell->GetNumberOfEdges();

  if (nedges)
  {
    for (int edgenum = 0; edgenum < nedges; ++edgenum)
    {
      vtkCell* edge = cell->GetEdge(edgenum);
      vtkPoints* pts = edge->GetPoints();
      int npts = edge->GetNumberOfPoints();
      lines->InsertNextCell(npts);
      for (int ep = 0; ep < npts; ++ep)
      {
        vtkIdType newpt = pdpts->InsertNextPoint(pts->GetPoint(ep));
        lines->InsertCellPoint(newpt);
      }
    }
  }
  else if (cell->GetCellType() == VTK_LINE || cell->GetCellType() == VTK_POLY_LINE)
  {
    vtkPoints* pts = cell->GetPoints();
    int npts = cell->GetNumberOfPoints();
    lines->InsertNextCell(npts);
    for (int ep = 0; ep < npts; ++ep)
    {
      vtkIdType newpt = pdpts->InsertNextPoint(pts->GetPoint(ep));
      lines->InsertCellPoint(newpt);
    }
  }
  else
  {
    return;
  }

  pd->SetPoints(pdpts.Get());
  pd->SetLines(lines.Get());

  if (prop)
  {
    this->PickActor->SetPosition(prop->GetPosition());
    this->PickActor->SetScale(prop->GetScale());
    this->PickActor->SetUserMatrix(prop->GetUserMatrix());
  }
  else
  {
    this->PickActor->SetPosition(0.0, 0.0, 0.0);
    this->PickActor->SetScale(1.0, 1.0, 1.0);
  }
  this->PickActor->SetOrientation(prop->GetOrientation());
  static_cast<vtkPolyDataMapper*>(this->PickActor->GetMapper())->SetInputData(pd);