[Visualpython-users] Freeze+Update a scene

[Hans-Joachim G. <gu...@gm...>]

Hi,

I noticed that the scene is updated & resized after every calculation.

The effect can be seen with just a small change (added print-statement)
to one of the example programs, e.g.:


from visual.graph import *

funct1 = gdots(color=color.red)
funct2 = gvbars(delta=0.05, color=color.blue)

for x in arange(0.0, 10.10, 0.1):
    y1 = 5.0 * cos(2.0*x) * exp(-0.2*x)
    y2 = 4.0 * cos(0.5*x) * exp(-0.1*x)
    print x, y1, y2			# causes short delay
    funct1.plot(pos=( x,y1 )) 
    funct2.plot(pos=( x,y2 )) 


The scene is 'blown up' as new values are added.

It would be nice if there were commands to stop/restart updating 
and forcing a refresh of the scene.

A similar request was on the mailinglist back in 2006-09
"freezing the scene", but I found no followup to that posting.


By(t)e,
 HaJo Gurt
-- 
Confidence is the feeling you have before you understand the situation.