Sorry, actually the "region" I mean is "dbRegion". The class index is:
https://www.klayout.de/doc/code/class_Region.html
I did same test on Calibre and Klayout. Calibre cost about 100 seconds but Klayout cost about 10 hours whe…
Sorry, my statement is not clear enough.
I mean when klayout do boolean operation to 2 layers, how does klayout choose region to do boolean operation?
Because a layer contains millions of polygons, it should have a method to choose region ( whi…