Sync some code change and fix from Prusa.
Thanks Prusa.
This also can fix github issue #317
Signed-off-by: salt.wei <salt.wei@bambulab.com>
Change-Id: If6993e0149733ccf85ed85f82553caa03df7ac60
Enable arachne for concentric pattern by
referring to PrusaSlicer
Also remove useless pattern we added.
Signed-off-by: salt.wei <salt.wei@bambulab.com>
Change-Id: Ie2574f7fc4751ebdf1caab4de52013f3101e104f