[VPython] Why are some objects displayed and some are not?

[Syver Enstad]

"F. GEIGER" <fgeiger at datec.at> writes:

> I wanted to display a pile of boxes of different sizes. So I tried the
> 
> 2-liner of the tutorial:
> 
> redbox=box(pos=vector(4,2,3), size=(8.,4.,6.),color=color.red)
> greenball=sphere(pos=vector(4,7,3), radius=2, color=color.green)
> 
> Worked: Displayed a red box with a green sphere upon it.
> 
> Then I tried
> 
> redbox=box(pos=vector(4,2,3), size=(8.,4.,6.),color=color.red)
> #greenball=sphere(pos=vector(4,7,3), radius=2, color=color.green)
> 
> Did not work: The screnn stayed black. So I seem to miss something
> when
> 
> displaying objects. What does the sphere do, that the box does not?
> 
> Any hints?

I just tried what you did on my machine, it works fine. (python 2.1 win2k)

-- 

Vennlig hilsen 

Syver Enstad