I am using a vtkRenderWindowInteractor with interactor style vtkInteractorStyleTrackballCamera. I need to restrict camera rotation so that the camera can't be rotated around the view axis. In other words, the camera's x axis shall always be in the world's xy plane.<div>
<br></div><div>How can I achieve this?<br clear="all"><div><br></div><div><br></div>
</div>