The adapters available in the library at the time of release include adaptions between circular, rectangular,
radius rectangle and oval sections with or without oblique skew.
One of the designs provides all the required parameters to provide for universal section to section
adaption. This takes the form of a radius rectangle adapting to a radius rectangle of different proportions
with oblique skewing in X and Y directions. By zeroing parameter this design can be reduced to any of the
other adapters shown.