Method InsertHandleOnLine

Interaction/Widgets/vtkSplineWidget.cxx:1334–1371

}

void vtkSplineWidget::InsertHandleOnLine(double* pos)
{
  if (this->NumberOfHandles < 2)
  {
    return;
  }

  vtkIdType id = this->LinePicker->GetCellId();
  if (id == -1)
  {
    return;
  }

  vtkIdType subid = this->LinePicker->GetSubId();

  vtkPoints* newpoints = vtkPoints::New(VTK_DOUBLE);
  newpoints->SetNumberOfPoints(this->NumberOfHandles + 1);

  int istart = vtkMath::Floor(
    subid * (this->NumberOfHandles + this->Closed - 1.0) / static_cast<double>(this->Resolution));
  int istop = istart + 1;
  int count = 0;
  int i;
  for (i = 0; i <= istart; ++i)
  {
    newpoints->SetPoint(count++, this->HandleGeometry[i]->GetCenter());
  }

  newpoints->SetPoint(count++, pos);

  for (i = istop; i < this->NumberOfHandles; ++i)
  {
    newpoints->SetPoint(count++, this->HandleGeometry[i]->GetCenter());
  }

  this->InitializeHandles(newpoints);
  newpoints->Delete();
}

void vtkSplineWidget::EraseHandle(const int& index)
{