Liang-Barsky in C#?

http://www.cs.helsinki.fi/group/goa/viewing/leikkaus/intro.html

This is the site that I'm using to help me implement Liang-Barsky into C#. Trouble is, I'm failing miserably at implementing it. I'd preferably be using this with XNA, so any help orienting around that would be greatly appreciated.

Any help?

Th开发者_如何学Goanks, Ruirize.

There is one available here: http://www.worldlingo.com/ma/enwiki/en/Liang-Barsky

Edit: That link appears to be dead. Here is the google-cache copy, placed into pastebin.