Method OnMouseMove

Interaction/Style/vtkInteractorStyleDrawPolygon.cxx:90–115

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void vtkInteractorStyleDrawPolygon::OnMouseMove()
{
  if (!this->Interactor || !this->Moving)
  {
    return;
  }

  this->EndPosition[0] = this->Interactor->GetEventPosition()[0];
  this->EndPosition[1] = this->Interactor->GetEventPosition()[1];
  const int* size = this->Interactor->GetRenderWindow()->GetSize();
  this->EndPosition[0] = std::min(this->EndPosition[0], size[0] - 1);
  this->EndPosition[0] = std::max(this->EndPosition[0], 0);
  this->EndPosition[1] = std::min(this->EndPosition[1], size[1] - 1);
  this->EndPosition[1] = std::max(this->EndPosition[1], 0);

  vtkVector2i lastPoint = this->Internal->GetPoint(this->Internal->GetNumberOfPoints() - 1);
  vtkVector2i newPoint(this->EndPosition[0], this->EndPosition[1]);
  if ((lastPoint - newPoint).SquaredNorm() > 100)
  {
    this->Internal->AddPoint(newPoint);
    if (this->DrawPolygonPixels)
    {
      this->DrawPolygon();
    }
  }
}

//------------------------------------------------------------------------------
void vtkInteractorStyleDrawPolygon::OnLeftButtonDown()