Pre-filter problematic areas for makeConvex function on Raft
Pre-filter problematic areas for makeConvex function on Raft

There were certain shapes that could cause issues with the makeConvex implementation, especially when sharp corners with very small segments were involved.

By using the approxConvexHull (which does a huge open & close), these small areas are pretty much guaranteed to be filtered out. After that we can refine with the make convex

CURA-9041

Ultimaker/CuraEngine,Ultimaker/CuraEngine