License
=======
The authors hereby grant permission to use, copy, modify, distribute,
and license this software and its documentation for any purpose, provided
that existing copyright notices are retained in all copies and that this
notice is included verbatim in any distributions. No written agreement,
license, or royalty fee is required for any of the authorized uses.


Note
====
1. Demonstrate the operations for the OpenCASCADE viewer, such as pan, zoom and rotate;
   the view manipulate mainly by the middle button of the mouse, and left button is used
   to pick and select;
2. Demonstrate the primitive shape construction algorithms usage, such as box, cone, 
   sphere, cylinder and torus creation;
3. Demonstrate some modeling algorithms, such as prism, revol, loft and fillet, chamfer;
4. Demonstrate boolean operations, such as cut, fuse and common;
5. Enjoy!


for more info, please visit the web site:
http://www.cppblog.com/eryar/

Feedback:
Shing Liu: [email protected]