Hi @llobera ,
This is only used in ParaView for now, see this:
https://www.kitware.com/generate-360-images-with-paraview/
An example usage can be seen here:
https://gitlab.kitware.com/paraview/paraview/-/blob/master/Plugins/PanoramicProjectionView/Views/vtkPVPanoramicProjectionView.cxx