Re: [Visualpython-users] VSpace.py Demo

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

There's something wrong with the program you posted:

Traceback (most recent call last):
   File "C:\Documents and Settings\Bruce\My Documents\Python 
stuff\vspace.py", line 279, in -toplevel-
     ship.animate(period, len(asteroids))
   File "C:\Documents and Settings\Bruce\My Documents\Python 
stuff\vspace.py", line 121, in animate
     self.status.text = 'frame rate = %i, asteroids = %s' \
ZeroDivisionError: float divmod()

Also, I'll note that you have the following:

     scene.range = (0, 0, 0)
     scene.scale = (.1, .1, .1)

The scene.range statement is irrelevant, because the scene.scale 
statement is equivalent to scene.range = (10,10,10). But in the beta 
version setting the range to 0 gives an error, as it should; it's a 
failing in the production version not to give an error.

Bruce Sherwood

Ron Adam wrote:
> 
> I made some changes to the VSpace.py Demo I posted earlier.
> 
> Velocities are now time based instead of frame based, so that things 
> should appear to move at the same speed on different speed computers.
> 
> The frame rate is limited by adding and removing asteroid objects.  So 
> the number of asteroid objects acts as a rough bench mark.  On my system 
> I get 220 asteroids at 60 FPS.  Your mileage may vary of course. ;-)
> 
> Rotation of the world is done all at once by rotating the parent "space" 
> frame instead of rotating frames individually.
> 
> You can zoom in and out of the field of view by pressing both mouse 
> buttons at the same time.  This allows you to see how everything moves 
> relative to the view.  This was disabled before.
> 
> The objects, asteroids, sun, stars, ship, are implemented with classes 
> with an "animate" method.  This groups related code together in a much 
> nicer way.
> 
> 
> Enjoy,
>   Ron Adam