On Jul 18, 12:37 am, "William Stein" <[EMAIL PROTECTED]> wrote:
> On Fri, Jul 18, 2008 at 3:04 AM, David Joyner <[EMAIL PROTECTED]> wrote:
>
> > Could you be more specific? When I do something like
>
> > sage: u,v=var("u,v")
> > sage: parametric_plot3d((cos(u), sin(u) + cos(v), sin(v)), (u, 0,
> > 2*pi), (v, -pi, pi), color='green', opacity=0.1, plot_points=[30,30])
>
> > I think get the [x,y,z] limits on the framed axes, which seems to be
> > what you are saying
> > you want.
I think what I want to do is not to bound but to clip the plot to a
specific (3D) window, smaller than the entire plot.
>
> Yes, Rose, could you be more specific? E.g., give a particular
> example of code that draws a 3d plot,
For exemple:
t1, t2 = var('t1,t2')
r=1/sqrt(2)
w=r*cos(t2)
fx=sqrt(1-r^2)*sin(t1)/(w+1)
fy=sqrt(1-r^2)*cos(t1)/(w+1)
fz=r*sin(t2)/(w+1)
A=parametric_plot3d([fx,fy,fz], (t1,0,2*pi), (t2,0,2*pi),
rgbcolor=(0,0,1), opacity=0.4)
r, t2 = var('r,t2')
t1=0
w=sqrt(1-r^2)*cos(t2)
fx=r*sin(t1)/(w+1)
fy=r*cos(t1)/(w+1)
fz=sqrt(1-r^2)*sin(t2)/(w+1)
B=parametric_plot3d([fx,fy,fz], (r,0.001,1/sqrt(2)), (t2,0,2*pi),
color=hue(0), opacity=0.8)
(A+B).show()
> and what you *wish*
> it would draw instead.
I would like to clip this in a box of side of length 4. I want the
torus to be in the center of the image even if I lose a part of the
other object.
Rose
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