On Feb 3, 2:00 am, "Nicholas" <Yue.Nicho...@[EMAIL PROTECTED]
> wrote:
> Hi,
>
> In the past, I have hand translated the camera from various 3D
> application to RenderMan coordinate system but recently I realized I
> did not fully understand the mathematics behind them. Every new
> application I tackle requires me to think through and sort of fumble
> my way around.
>
> Some application provides their camera with transformation
> information like tx,ty,tz and rotx,roty,rotz while others, provides an
> (eye, target, upvector) set of vectors. So far, most apps have been in
> right-hand coordinate system and require translation to left-hand
> coordinate system.
>
> For the case of the (eye,target,upvector) case, I tried using the
> information in Application Note #15 to get the require rotx,roty and
> rotz angles.
>
> Does anyone know of a good place to get a good understanding of the
> camera transformation between 3d application and renderman?
>
> Regards
PlaceCam is a good example http://www.dotcsw.com/doc/shadows.html
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