hi OpenSG users...
i have a small problem, yet quite puzzling. 
I have built the roof of the cave i am using
in my experiments and... i discovered that i
need to change the aspect ratio of the upper 
projection.

I mean... on the three walls i have 3 separate 
projections using the standard 3:4 aspect ratio,
which is natural since the screens are rectangular.
The roof on the other side is square, so my projection
is right in the "horizontal" axis and shortened in 
the "vertical".
I think that i have to use the aspect field of my perspective 
cameras, to correct this bad side-effect, but since
it is the first time that i come across this kind of trouble i was
wondering if someone already solved it.
What aspect ratio should i use??? 1:1????
Does the correct syntax sound like:

camera->setAspect (1.0);
????

where 1.0 is the result of horizontal-pixel/vertical-pixel length???

Thanks for the hints,
Enrico



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