Re: [Visualpython-users] [Tutor] 'sphere' object is unindexable

[Mr G. K. <s40...@st...>]

Sorry, I do see that I wrote that question in a confusing way, but I've
worked out where I was going wrong now. Thanks for taking a look.

----- Original Message -----
From: Alan Gauld <ala...@bt...>
Date: Friday, February 6, 2009 7:22 pm
Subject: Re: [Tutor] 'sphere' object is unindexable
> "Mr Gerard Kelly"  wrote
> 
> >I am trying to get around the problem of sphere object being 
> >unindexable.
> 
> Can you give some background? Where are you getting these spheres?
> Is this a graphics program or a tookit of some kind?
> 
> > I need to make spheres appear, positioned according to some list, 
> > for
> > example:
> >
> > for i in [0,1]:
> >  sphere(pos=(0,i,0), radius=0.1)
> 
> And does this work? Or do you get an error? If so what?
> 
> > Is there any way of making these different spheres behave 
> > differently
> > without using indexing?
> 
> Where is the indexing issue?
> Are you trying to store the spheres in a list and index the list
> to access a sphere or are you trying to use an index to access
> some aspect of the sphere?
> 
> Show us the code that sdoesn't work and the error message.
> Don't just describe it. Show us. Don't assume we know what
> you are trying to do - we are not psychic.
> 
> > For example, I would like to be able to make the lower sphere go red
> > when it is clicked on, using this fragment of code:
> >
> > while True:
> >  if scene.mouse.events:
> >    m = scene.mouse.getevent()
> >    if m.pick is ball[0]:
> >      ball[0].color = color.red
> >
> > But obviously it won't work because I haven't named it ball[0].
> 
> So why don't you name it ball? and what is m.pick supposed to be?
> Some attribute of a muse event based on your code but I have
> no idea what it might be!
> 
> > figure out a way to name the objects based on their position without
> > using indexing. Is there any way to do this?
> 
> A standard list should work and so provided you stored your
> spheres in a list when you created them you should be able to
> access them via an index. But without real code and a real
> error trace we can't help very much other than by making
> speculative guesses.
> 
> 
> -- 
> Alan Gauld
> Author of the Learn to Program web site
> http://www.freenetpages.co.uk/hp/alan.gauld
> 
> 
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