On 1/11/08, Timothy Clemans <[EMAIL PROTECTED]> wrote:
>
> Could you make the Sage interface to Tachyon have a right handed
> coordinate system instead of a left one?

It is much better to use the new 3d graphics, which is right handed
and supports tachyon output.    You can see the primitives we
support so far by doing:

sage: import  sage.plot.plot3d.all as p
sage: p.
p.arrow3d            p.line3d             p.plot3d             p.tetrahedron
p.cube               p.list_plot3d        p.plot3d_adaptive
p.dodecahedron       p.octahedron         p.point3d
p.icosahedron        p.parametric_plot3d  p.sphere

If you make any 3d plot you can view it using tachyon by
using the viewer='tachyon' option:

sage: P = plot3d(lambda x, y: x^2 + y^2, (-2,2), (-2,2))
sage: P.show(viewer='tachyon', figsize=10)

This does not yet give you the full functionality of tachyon, e.g.,
placement of lights, changing of viewpoint, etc.   It would be
nice to have some additional help in implementing 3d primitives...
We made a good start with the above list of commands, but
much remains to be done.

> On Jan 11, 12:34 pm, photonn <[EMAIL PROTECTED]> wrote:
> > I did not think of this earlier, but if you would change the
> > resolution in the first line from 1000 x 800 to 1024 x 768, the result
> > would be a perfect desktop background.  Of course, you could make them
> > at any resolution by changing those numbers.
> >
> > My main motivation was to add to the sage marketing material.  I think
> > this version of the logo is really pretty good (the word sage with the
> > a and g connected, hinting at an infinity symbol).
> >
> > I just wish the co-ordinate system in Tachyon was right-handed!!!  Man
> > it is tedious to work in a left-handed system.
> >
>


-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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