Hi,

The SSM seems to assume it always has viewport index 0. This isn't 
always correct, as one can add other viewports.

i.e:

Line SimpleSceneManager::calcViewRay(Int16 x, Int16 y)
{
        Line l;
        _camera->calcViewRay(l, x, y, *_win->getPort(0));
        return l;
}

Is there a reason for this (other than to keep it simple) or would it 
make sense to change the SSM so that it mostly concerns itself with it's 
own viewport and assumes less of the surrounding objects?

I could probably cook something up if ppl think it's worthwhile.

Cheers,
/Marcus


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