Importing Eagle files allowed for invalid zone values for clearance and
minimum width that triggered asserts in the 3d-viewer.
Fixes: lp:1801188
* https://bugs.launchpad.net/kicad/+bug/1801188
This commit finishes the removal of OpenMP from the KiCad codebase.
Removed in this commit are the OpenMP calls in 3d-viewer and
qa/polygon_triangulation as well as all references in CMakeLists.txt
std::thread is used instead for multithreaded computation
Previous commit mistakenly included the full clearance for the rounded
rectangle circle. The CFILLEDCIRCLE2d takes the radius rather than the
diameter.
Apply same logic of using a filled circle to represent a zero-length
element as a filled circle with radius of the line.
Fixes: lp:1785823
* https://bugs.launchpad.net/kicad/+bug/1785823
Replaces Poly2Tri with updated code to process polygons faster and more
robustly. Notably, we can now handle overlapping holes in the polygons,
allowing us to cache the triangulation of complex boards