"Peter Popov" wrote:
> I'll dissect the source for you, namely Parse_Camera
> in parse.cpp, and extract some tissue for further inspection.

Actually I was aware of all that, not because I've seen the source code, but
as a result of many years of using POV-Ray.

> You can see that there are different means to address
> the various parameters of a perspective/orthographic
> camera. So you can see the order they are specified in
> really counts.

The point is that it doesn't really make sense to specify the up, right and
direction vectors (the core of the camera) *after* you specify either of the
"adjusting parameters" like angle or look_at. So as Thorsten also pointed
out, there are some orders that are not useful.

Rune
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