Method ComputeMaxParallelScale

Modules/Core/src/Controllers/mitkCameraController.cpp:32–53

}

mitk::ScalarType mitk::CameraController::ComputeMaxParallelScale()
{
  double widthInMM = this->GetRenderer()->GetCurrentWorldPlaneGeometry()->GetExtentInMM(0);
  double heightInMM = this->GetRenderer()->GetCurrentWorldPlaneGeometry()->GetExtentInMM(1);

  double dispHeight = this->GetRenderer()->GetViewportSize()[1]; // in pixel!
  double dispWidth = this->GetRenderer()->GetViewportSize()[0];

  // To get the right zooming factor, we need to set the (half) height to the vtk camera using SetParallelScale.
  // However, it could be, that our picture is so wide or the display so small, that we cannot take the height of the
  // picture.
  // For a wide picture, we have to take the width and adapt the width so that our image fits to the screen.
  // But we can only set the height. Therefore, if the width is the limiting factor, we need to get the ratio of scaling
  // for the width and multiply it with the height, so that we have a modified height and set this one. Believe us, we
  // figured it out...
  if ((dispWidth / widthInMM) < (dispHeight / heightInMM))
  {
    heightInMM = widthInMM / dispWidth * dispHeight;
  }

  return heightInMM * 0.5;
}

void mitk::CameraController::AdjustConstrainedCameraPosition(mitk::Point2D &planePoint)
{