Did some searching.
Looks like this is like "zig zag milling" with a "linked tool path."

Tool-path planning for direction-parallel area milling

http://vms.kaist.ac.kr/publications/Journal/[27]%20CAD-00-DParea.pdf

Very preliminarily, it looks like parallel lines are used to get the nodes, which are then linked up
for the path...
?
- Brian