Re: [Visualpython-users] points demo

[Stef M. <s.m...@ru...>]

symion wrote:
> The following program, stars-5.py 
> <http://home.primusonline.com.au/knoware/python/stars-5.py> is a 
> simulation of Globular cluster Messier 80, using the new points 
> object. It produces a huge volume of space with almost 6000 points. 
> (you have to zoom in and in... to find the black hole at the centre)
>
> Pressing the Enter Key will select a specific 'star' that you can zoom 
> toward to see it as a glowing disk.
>
> The position of each star is determined by the individual position of 
> each point in the points(pos array), and I have found a strange 
> effect. The stars near the outer edge of the cluster have a distinct 
> wobble when spinning around them, apparently the position of each 
> point becomes more unstable as you zoom in toward its limit and so the 
> star wobbles!
>
> Apart from that the simulation looks close to Messier 80 
> <http://en.wikipedia.org/wiki/Globular_cluster>
nice work Symion !
few questions / remarks though:
- is it true you can find the black hole only, when you've not pressed 
Enter before, to get the coordinates ?
- why not use the left click instead of the Enter key to get the 
coordinates ?
- you can only zoom with left+right mouse button and not with middle 
mouse button ( is this a VPython bug ?)
- and wouldn't it be lovely to see the Color-magnitude diagram ;-)

cheers,
Stef
>
> Symion
>
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