Re: [Visualpython-users] using arrows in a class

[Bruce S. <bas...@un...>]

The following test routine works for me. Note that in your note you 
wrote "s1 = pp._test" which should be "s1 = pp._test()". If this example 
doesn't address your problem, please submit a full test routine. I 
couldn't reproduce the behavior you describe.

from visual import *

class _test:
     def __init__(self):
         self.arrow1 = arrow(pos=(0,0,0), axis=(1,0,0), color=color.red)
         self.arrow2 = arrow(pos=(0,0,0), axis=(0,1,0), color=color.cyan)

     def move(self, step):
         self.arrow1.pos.x = self.arrow1.pos.x + step
         self.arrow2.pos.x = self.arrow2.pos.x + step

if __name__ == '__main__': # for testing the module
     #now i create instances of the class like this
     s1 = _test()
     s2 = _test()

     ###now i have a while loop
     while 1==1:
         rate(100)
         s1.move(step=-0.01)
         s2.move(step=0.01)

Richard Chapman wrote:

> hi
> 
> okay i have a file called pp.py that has a class def in it
> 
> class _test:
> 
> 	def __init__(self):
> 		self.arrow1 = arrow(...
> 		self.arrow2 = arrow(...
> 
> 	def move(self, step):
> 		self.arrow1.pos.x = self.arrow1.pos.x + step
> 		self.arrow2.pos.x = self.arrow2.pos.x + step
> 
> 
> now back in another file in the same directory i have
> 
> import pp
> 
> #now i create instances of the class like this
> s1 = pp._test
> s2 = pp._test
> 
> 
> #now i have a while loop
> while 1==1:
> 	s1.move(step=-2)
> 	s2.move(step=2)
> 
> now the problem i am having is that it is only showing s2's arrows, throwing
> in some print statements in between sections of code sometimes i can get it
> so that s1 arrows you see for a momentum, like flickering but a mostly not
> displayed. like 10 seconds you dont see s1 and then for a second you do
> where as s2 you see all the time, it seems almost as if s1 and s2 are
> sharing the same arrows.
> 
> How do i stop this from happening, how do i get s1 and s2 to be displayed
> together/ solid not flicker how it does. what am i doing wrong.
> 
> 
> Thank you for any help
> 
> rich
> 
> 
> 
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