ggs67

// More information on original version: https://danielupshaw.com/openscad-rounded-corners/
//
// Changed by GGS67 to remove some limitations:
//
//  1. Allow radius>length for rounded corners in one axis only (problem reported on original page in 2015)
//  2. Remove limitation where for apply_to=(x|y|z)max or (x|y|z)min the dimension of the corresponding perpendicular 
//     axis had to be at least 3 times the radius because of fixed cylinder height. Now cylinder height is always computed not
//     to interferr with opposite corner