Comment 5 for bug 1100620

We have to be careful changing the number of segments. The majority of PCB lines are angled at a multiple of 45 degrees, with the normal case of adjoining lines being 45 degrees apart. 36 is not evenly divisible by 8, so that is not a good choice.

40 segments was chosen deliberately to ensure that the intersection between the clearances of these two lines share as many common points as possible. If not, each line intersections creates more complex geometry than necessary.