[PD] GEM position parameters

[Thomas Ouellet Fredericks]

Strangely, the height.

Tom

On 2/14/06, Alexandre Quessy <listes at sourcelibre.com> wrote:
>
>
> Mathieu Bouchard a écrit :
>
> >
> >Whatever the units are in the 3-D space, they cancel out with the
> >flattening: meters/meter, cubits/cubit, inches/inch, all those are
> >non-units. This is because a point in 3-D space (x,y,z) becomes
> >(k*x/z,k*y/z). The constant "k" can be imagined to be in whichever units
> >you want, but in GEM it tends to be some fraction of the window's size in
> >pixels.
> >
> >
> >
>
> The constant k is ... well, 4 is the width (or height, I forget) of the
> Gem window.
>
> aalex
>
>
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