[Visualpython-users] Simple Problem with label ...

[sccs c. <zo...@ya...>]

Hello,
I have a strange behaviour of the 'label' visaul class:
if i draw a label that is linked to a form, i shall draw it 2 times until it is displayed correctly: The label is not on the sphere the first time, and i shall wait (sleep(1)) before redrawing the label. Then the label is correctly drawn.

import visual
from time import sleep

def draw_label():
    visual.label (frame = form,
                pos   = (0, 0, 0),
                text  = "(%.2f, %.2f,%.2f)"%(x0, y0, z0), 
                opacity  = 0, 
                box      = 0,
                color    = visual.color.red)
x0 = 2
y0 = 2
z0 = 10
visual.sphere (radius = 2, pos = (0, 0, 0),  color = visual.color.yellow)
form = visual.frame(name ="Guide")
form.pos = (x0, y0, z0)
visual.sphere (frame = form, radius = 1, pos = (0, 0, 0))
draw_label()
sleep(1)
print "redraw!"
draw_label()

Thank you for your help.
Zorgi

             
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