Re: 2D 3D projection question

[Keith W. <kw...@cs...>]

On Wed, 23 Jun 2004, James W. Walker wrote:

> Keith Wiley <kw...@cs...> wrote:
>
> >Can I easily take a pixel coordinate and determine which 3D object is
> >under that pixel, in other words which 3D object (or actual triangle or
> >trimesh I suppose) is shallowest in the z-buffer at the pixel's location?
> >
> >I know Open-GL has routines for this sort of thing.  How would this be
> >done in QD3D or Quesa?  Or can it not easily be done?
>
> In QD3D/Quesa that's called picking.  See the "Pick Objects" chapter
> in the QD3D manual.

Thank you very much for the lead.

________________________________________________________________________
Keith Wiley                                kw...@cs...
http://www.unm.edu/~keithw                 http://www.mp3.com/KeithWiley

"Yet mark his perfect self-contentment, and hence learn his lesson,
that to be self-contented is to be vile and ignorant, and that to
aspire is better than to be blindly and impotently happy."
                                           --  Edwin A. Abbott, Flatland
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