Joseph Lenox 364f2a6e8c
Patch for #4620 - ensure posDetectSurfaces is invalidated on slice change (#4679)
* Update some language used 

* Completely check pre-condition in test. 

Make sure that we have 1 solid bottom layer and 2 solid top layers before invoking our change.

* Use step_invalidate() instead to ensure dependencies are invalidated as well.

Move set_started() until after invalidations.
2019-01-06 18:03:24 -06:00
..
2017-03-28 08:44:11 +02:00
2014-12-27 22:58:01 +01:00