Re: [Visualpython-users] Visibility Bug?

[Bruce S. <Bru...@nc...>]

 From the Visual reference manual (on the Help manual in VPython):

------------------------
Another frame attribute is objects, which is a list of currently visible 
objects contained in the frame (the list does not include objects that 
are currently invisible). If you want to make all the objects in a frame 
be red, do the following (assume the frame is named f):

for obj in f.objects:
   obj.color = color.red

If you use this method to make all the objects invisible, the f.objects 
list will be empty. If you need a list containing all the objects, both 
visible and invisible, you need to maintain your own list of objects.
--------------------------

In the new beta version there is this new feature: "You can now make a 
frame visible or invisible, and all objects in the frame will be 
affected. And you can set the vector "scale" attribute of a frame to 
change the size of the combined object."

Bruce Sherwood

Theo DuBose wrote:
> Hello,
>
>     I have noticed what appears to be a bug when dealing with frames and 
> visibility. If I make all the objects in the frame disappear, with
>
>              for obj in a.objects:
>                       obj.visible = 0
>
> and then attempt to make the objects reappear with
>           
>
>              for obj in a.objects:
>                       obj.visible = 0
>
> They do not appear. Is this a known, or does anyone have any 
> suggestions? Presently I am overcoming this by reinstantiating the 
> invisible objects, but i would like to be able to reduce the amount of 
> memory this uses.
>
> Thanks,
>     Theo
>
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