Bug in First Layer Expansion: Support material base layer intersects/overlaps with interface layer

[simonkuehling]

Version

2.4.0-beta3+linux-x64-GTK3

Operating system type + version

Ubuntu 21.04

Behavior

• When slicing the attached project, I get intersecting print paths in the first layer. Seems like the support base material is overlapping with an interface layer.
• Looks like these paths should have been clipped against each other...
  

Project File (.3MF) where problem occurs

Enclosure.zip

[simonkuehling]

This is probably caused by the first layer expansion feature not checking against interface material in the first layer. Setting first layer expansion to zero generates valid toolpaths like this:

[bubnikv]

Fixed with baee167

Thanks for the catch.

By the way, don't you want profiles of your printers being integrated into PrusaSlicer code base / installer? If so, please submit them to https://github.com/prusa3d/PrusaSlicer-settings