Different projection matrix per viewpoint

[dcnieho]

Dear Jeff,

I have implemented a solution where i can change the viewpoint with a toggle button, so i can see a topview instead of a view through the "virtual eyes". In very brief:

BirdEyeView   = viz.addView()
BirdEyeView.setPosition([0, 50, 0])	# move camera up
BirdEyeView.lookAt([0,0,0], 0)
viz.MainWindow.setView(BirdEyeView)

I would however like to view the scene in topview with an orthographic projection matrix instead of the usual stereo perspective setup (this is in the Vive HMD). How would i go about setting the orthographic projection? It seems projection is set for a window, not a view.

In that case, is there a way to backup the stereo projection setup and later restore it? I see you can get the projection matrix, but which one should i get, left eye, right eye, both eyes, all? the <window>.setProjectionMatrix documentation suggests if specifying a matrix for both eyes, it is automatically adjusted for the individual eyes... (NB: i see that the steamVR module has an apply method to set the projection matrix, but i am searching for a general solution, that would e.g. also work when developing on the desktop with a single non-stereo window.)

Thanks and all the best,
Dee