changelog
    
    
    - Tue, 19 Jun 2018 22:00:46 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 19 Jun 2018 22:00:46 +0300] rev 1410
 
    - simplified
 
    - Tue, 19 Jun 2018 21:57:39 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 19 Jun 2018 21:57:39 +0300] rev 1409
 
    - fixed chord triangle count formula
 
    - Tue, 19 Jun 2018 21:49:21 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Tue, 19 Jun 2018 21:49:21 +0300] rev 1408
 
    - fixed bugs regarding primitives, added chord substitution
 
    - Sun, 17 Jun 2018 17:07:29 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 17 Jun 2018 17:07:29 +0300] rev 1407
 
    - added support for open/closed cylinders in LDCircularPrimitive