For ITK rev. 3.8 and earlier: Converting coordinates from the ITK physical coordinate system (which did not support rotated images for ITK v3.8 and earlier) to the MITK world coordinate system should be performed via the Geometry3D of the Image, see Geometry3D::WorldToItkPhysicalPoint.
(as of 2015_05) GLMappers are no longer supported in the rendering pipeline. Please use mitkVtkMapper instead or consider writing your own vtk classes, such as vtkActor or vtkMapper
This widget is deprecated. The features (1) connection to NDI tracking devices and (2) handling of navigation tools are available in the pluging org.mitk.gui.qt.igttracking in a current version. The new concept to access the tracking devices is to use microservices. This can be achieved very simple by using the QmitkNavigationDataSourceSelectionWidget. You can find an example in the IGT tutorial step 2 / org.mitk.gui.qt.igtexamples (view TrackingLab).