Re: [Visualpython-users] Clear points

[<wsw...@nc...>]

I have not tested it, but I think what would fix your problem is if you
added everything that you wanted to clear into a frame, and then just loo=
p
through the frame and set everything to not visible.  I've ran into the
same problems that you're facing and I've used this approach to fix it. (
Like with my pipes.py example on the vpython.org website )



>
> Could someone please correct (or comment on) the following (rather
> minimal) example. It runs without any error messages but there are some
> unwanted lines and trying to clear a graph by putting visble=3D0 doesn'=
t
> work.
>
> Yours
> Poul Riis
>
>
>
> from visual.graph import *
> from math import *
> from time import *
>
> graph =3D gdisplay(title=3D'Test',width=3D400,
> height=3D300,foreground=3Dcolor.black, background=3Dcolor.white)
> graphcurve=3D gcurve(color=3Dcolor.red)
>
> for i in range (0,360):
>     graphcurve.plot(pos=3D(i,sin(i/180.0*pi)))
>     sleep(0.005)
>
> #painting the curve white, thus clearing it:
> graphcurve.color=3Dcolor.white
> for i in range (0,360):
>     graphcurve.plot(pos=3D(i,sin(i/180.0*pi)))
>     sleep(0.005)
>
> #another curve in blue:
> graphcurve.color=3Dcolor.blue
> for i in range (0,360):
>     graphcurve.plot(pos=3D(i,cos(i/180.0*pi)))
>     sleep(0.005)
>
> #Hoping to clear the blue curve...:
> graphcurve.visible=3D0
> #Redrawing the curve in green:
> graphcurve.color=3Dcolor.green
> for i in range (0,360):
>     graphcurve.plot(pos=3D(i,cos(i/180.0*pi)))
>     sleep(0.005)
>
>
>
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