Re: How to obtain the screen position of a point in the environment ??

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Angus Dorbie (dorbie++at++multipass.asd.sgi.com)
Sun, 20 Jul 1997 05:20:41 -0700

On Jul 19, 6:07pm, Ren-Jye Yu wrote:
> Subject: How to obtain the screen position of a point in the environment ?
> Hello,
>
> Is there a command that allows me to obtain the x,y screen pixel
> position of a point in the viewing scene? In other words, how can I obtain
the
> projection matrix in Performer?

There's always the pfVec3::xformVec

If you use the modelviewing matrix it should give you coordinates -1 to +1
which you can then scale to match your viewport.

Cheers,Angus.
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