standard matrix with aspect ratios


I have a 3D display with a particular aspect setting.  I
want to create a matrix that would correspond to the
overhead view (z pos on top), with the aspect ratio applied.
I can't just call getMatrix() because the box might be

I looked at the code down in ProjectionControlJ3D which does
this when you use setAspect, but I'd like to avoid the
java3D specific references.

I'm wondering if I can get the same effect with some combination
of multiply_matrix.  I'm thinking that the default box would be:

make_matrix(0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0);

but I'm not sure how to apply the aspect ratio to this.

Any help would be appreciated.


Don Murray                               UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
        "Time makes everyone interesting, even YOU!"

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