Hi dvid

this is a great news (at least for my wife who is a physic teacher). 
how are you dealing with the C or C++ parts? did you port them into 
Squeak? do we need a plugin? Is it running on mac/pc?

Stef


On Lundi, sep 8, 2003, at 17:51 Europe/Zurich, David Buck wrote:

> I'm releasing the ElastoLab physics as open source and I've ported it 
> to Squeak.  If you'd like to try it, visit:
>
>    http://www.simberon.com/Services/SmalltalkSoftware/
>
> The classes in SimulatedPhysics.st offer basic physics simulation of 
> particles, gravity, air resistance, springs and elastics.  This code 
> is fairly clean and works quite well.  The code in 
> SimulatedPhysicsAdvanced.st covers barriers and rods which are much 
> more computationally difficult and contain some messy code and 
> algorithms.  The code in SimulatedPhysicsTestcases.st provides 
> testcases for some things in the SimulatedPhysics.st package but 
> doesn't yet test the advanced code.  At this time, there is no 
> additional documentation.  I'd suggest just looking at the testcases 
> and trying things from there.
>
> There's no GUI with this code.  I'd like to see what other people can 
> do with it.  The SimulatedPhysics part should be fairly easy to 
> convert to 3D if you wish.  The Advanced part is much more difficult 
> to make 3D because of rods need a tensor matrix instead of just a 
> number for the moment of inertia and because of barriers which require 
> a 3D plane model instead of just a line.
>
> If you'd like to see what this physics code is capable of doing, check 
> out ElastoLab at:
>     http://www.simberon.com/home.htm
>
> I'd like advice from the Squeak community on license options.  I could 
> use the Squeak license (although its references to Apple seem strange 
> in this context).  What do other people do?
>
> Anyway, for now, the code is there and you can play with it.  If you 
> have any improvements or enhancements, e-mail them to me and I'll put 
> them up on the site.
>
> Have fun - that's what it's all about.
>
> David Buck
> Simberon Inc.
> www.simberon.com
>
>
>
>