freefoam-selectCells — Select cells in relation to surface.
Divides cells into three sets: - cutCells : cells cut by surface or close to surface. - outside : cells not in cutCells and reachable from set of user-defined points (outsidePoints) - inside : same but not reachable.
Finally the wanted sets are combined into a cellSet selected. Apart from straightforward adding the contents there are a few extra rules to make sure that the surface of the outside of the mesh is singly connected.