Customizable, round case for Raspberry Pi B+ and 2

I recently purchased a Raspberry Pi 2. I was unsatisfied with the commercially available cases, for various reasons. So I did my own customizable case.

It's still a WIP, but should work already pretty well. I will continue working on it and add parts (lid, feet, etc.) and features, until I am satisfied.

So far the case is customizable in terms of diameter, height and switchable features. You can decide, if you want holes for VESA mounts, holes for hanging the case on a wall, and if you want ventilation holes. Of course, if you are more familiar with OpenSCAD, you can do much more. But I tried to keep most things simple, so that everyone can print his own case, specified just as one wishes.

CHANGELOG
2016/2/8
- Removed one of the suspension holes
- The remaining suspension holes now do center between the outer and the inner wall
- Optimized code for more flexibility
- Reduced number of if-statements
- Changed the names of the variables