Re: [Plib-users] ssg coordinate system convention

[Steve B. <sjb...@ai...>]

Rahul Choudhury wrote:
> 
> Just started looking into the ssg src code. I was
> wondering whether the coordinate system convention
> used in SSG is same as OpenGL or something different.

SSG's coordinate system is the same 'handedness' as OpenGL,
but uses Z-is-up instead of Y-is-up.   I'm afraid that's
because I come from a flight simulation background (where
Z-is-up has always been the convention) - and there are really
too many users to change it at this late stage.

SSG is not alone in this - SGI's Performer scene graph library
is also a Z-is-up system that's based on OpenGL.

-- 
Steve Baker                  http://web2.airmail.net/sjbaker1
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