Okay this was homework. I searched for a really long time for a javascript implementation of cohen’s clipping algorithms and could find none. Professor said write it in c but its hard to program mouse clicks in c. With javascript, all it takes is a browser.
1. Cohen-sutherland line clipping algorithm in javascript
2. Sutherland-Hodgman polygon clipping algorithm in javascript.
I believe the code is pretty readable – I had commented lavishly. Save them as html files, open in a browser, and keep clicking left mouse button.
And yes, the implementation is not perfect. I basically drew over the edges in white to “erase” it and that is why you see a very thin line outside the rectangle in the image.
Kevin Martin Jose 