DeveloCAD's MNHiddenLines enables the calculation of hidden lines using mathematical principles.

What's more, the software is bundled with a comprehensive and detailed manual in both Windows help and Adobe pdf format. It also comes with a considerable number of examples tailored for Borland's Delphi, as well as an ActiveX component that can be used with almost any development system.
The overall package is user-friendly and efficient, and the support team at develoCAD is always eager and interested in helping their customers every step of the way.
Version 1.1: N/A