We want to keep at most 1 thread per 2 connectivity updates but we need
to force that floor to be at least 1 for when there is only 1
connectivity update.
Fixes: lp:1795245
* https://bugs.launchpad.net/kicad/+bug/1795245
(cherry picked from commit 89a3d2b451)
OpenMP is not available for macos, so moving to a std::threads
implementation brings platforms into shared code.
This also reduces the OpenMP overhead when computing connectivity and
ratsnests.
Fixes: lp:1780130
* https://bugs.launchpad.net/kicad/+bug/1780130
(cherry picked from commit c0f067bf90)
Connectivity searches were slow for large, complex boards. This was
partly due to the need to search all lists for possible connections
between anchors.
We remove this requirement by creating an RTree based on items' bounding
boxes similar to the PNS router. Then we get both the colliding items
and search forward/backward to see if there are connections between the
anchors and the other item.
Because we use RTree, we no longer need the maintenance overhead of multiple
item lists and an anchor list in the connectivity class.
Fixes: lp:1701791
* https://bugs.launchpad.net/kicad/+bug/1701791
Fixes: lp:1769408
* https://bugs.launchpad.net/kicad/+bug/1769408
Fixes: lp:1761989
* https://bugs.launchpad.net/kicad/+bug/1761989
- renamed connectivity.[h|cpp] to connectivity_data [.h|.cpp] so that the file name matches the main class name.
- GetNetItems() now returns a vector instead of a list