I'm quite a newbie in babylon and I've been reading a lot to understand how things work.
Finally, I could make a scene work with an ortho camera, including the possibility of zooming with the mouse wheel. But when I zoom out, an effect appears that I can not understand: the camera goes to the opposite side despite the frustrum is always positive. I tried many different things but I can not understand what is happening.
I created an example in babylon playground: http://www.babylonjs-playground.com/#U543PM#1
Just zoom out with the mouse wheel and see what happens.
I know that I am missing something, but I have no idea of what it is, so any idea or suggestion is welcome.
Thanks in advance.