On 10/25/2016 12:40 PM, Bald Eagle wrote:
> I thought there had been some discussion about this, Way Back When (TM), but I
> could not locate a thread.
>
> I was wondering if there were some way to calculate the positions of the four
> corners of the visible render frame, or unit-length-vectors that point from the
> camera in those directions.
>
> If there are other formulas for calculating schtuff associated with the final
> render and field of view, that would be helpful as well.
>
> Currently just interested in typical perspective camera, though I also use
> orthographic frequently.
>
> Thanks
>
>

Maybe you could use my updated screen.inc to calculate the area? I 
posted it in p.t.s-f just now.

Mike

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