From BlenderWiki

Weekly Report #06 - Silhouette Operator

In this week I went over the whole code and restructured and cleaned up most of it. I came to the conclusion that i need to rewrite a big portion of it. Some old methods are prone to errors and overly complex. In addition to that I wasn’t aware that my branch doesn’t build on other systems due to misused arrays on the stack. In the next week I will rewrite big portions of the tool. My goals are a unified interpolation method to calculate smoothing and sharp edges. I will reshuffle and simplify the vertex order and edge/loop/poly generation. If everything goes according to plan I am expecting a more robust system.

For future reference i pushed the last working version to the branch before deleting big parts of the code. As I have mentioned above, it might not build. If you can not build but still want to get an idea of the development stage, I have created a gif as a small demonstration (!5.5mb):
http://pasteall.org/pic/show.php?id=117008