Cut optimisation algorithms

[Varnius]

Hello.
Me and some of my friends at college were assigned a practical task of developing a net application for optimization of cutting rectangular parts from some kind of material. Something like apps in this list, but more simplistic. Basically, I`m interested if there is any source code for this kind of optimization algorithms available on the internet. I`m planning to develop this app using Adobe Flex framework. The programming part will be done in Actionscript 3. However, I doubt that there are any optimization samples for this language. There may be some for Java, C++, C#, Ruby or Python and other more popular languages, though. So, if anyone knows any free libs or algorithm code samples that would suit me, I`d like to hear your suggestions. :)