Mailing list archives : pcb-rnd

ID:908
From:ge...@igor2.repo.hu
Date:Sun, 24 Sep 2017 11:36:54 +0200 (CEST)
Subject:[pcb-rnd] new feature: polygon vs. polygon clearance
replies: 909 from John Griessen <jo...@cibolo.com>
Hello pcb-rnd hackers,
 
some boards need a lot of copper: so much that it looks like if the whole 
bottom layer was just copper with a few gaps drawn to form islands. A new way 
of drawing this with pcb-rnd is enabling polygon-vs-polygon clearance, as 
demonstrated in the 2-minutes video at:
 
https://archive.org/details/poly-clear-poly
 
 
This enables polygons to make clearance around themsleves the same way as lines 
or arcs do. (Speaking in technical terms, the new flag, PCB_FLAG_CLEARPOLYPOLY 
is the polygon alternative to the clear-line flag used on lines and arcs).
 
The real reason for adding this feature was to support arbitrary shaped smd 
pads with subcircuits - the smd pad needs to be able to clear other polygons. 
Being able to draw these thick islands in a ground plane is just a bonus.
 
Regards,
 
Igor2
 

Reply subtree:
908 [pcb-rnd] new feature: polygon vs. polygon clearance from ge...@igor2.repo.hu
  909 Re: [pcb-rnd] new feature: polygon vs. polygon clearance from John Griessen <jo...@cibolo.com>