Polygonal Converter.

 From:  Max Smirnov (SMIRNOV)
6674.128 
Subdiv beta 4 :)

Fixed some geometry bugs
Improved mesh load speed (about 10x)
Added support of polar triangles


Don't use any other types of triangles


Added handy feature: switch mode
If you use hotkey to run this script, put the same key combination as command parameter
Example: Key: Z Command: _Subdiv_beta4 Z
After that you can switch script on and off with Z key.

EDITED: 7 Mar 2022 by SMIRNOV