Am 2013-08-01 01:09, schrieb Oscar Lazo:
> Hello dear sage users!
>
> I would like to view a 3d plot from a specific viewpoint using tachyon.
> For instance
>
> save: var('s')
> sage: spiral=parametric_plot3d((cos(s),sin(s),s/8),
> (s,-16*pi,16*pi),aspect_ratio=1,plot_points=200)
> sage: show(spiral, viewer='tachyon')
>
> shows me a spiral from some default viewpoint. However i would like to
> view it "from inside" that is setting the camera center in (0,0,0)
> viewing towards (0,0,1). Is this posible?
>
> Using tachyon with something like
>
> sage: t = Tachyon(xres=512,yres=512, camera_center=(0,0,0),
> look_at=(0,0,1), raydepth=4)
>
> doesn't allow me to use parametric_plot3d or any other of sage's nice
> plotting functions as far as I can see.
FYI, the trac-ticket
http://trac.sagemath.org/ticket/13111
is related to that topic. (unfortunately nothing done on that ticket)
Daniel
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