Warp Point Opening - how to measure distance?

[freduk]

quite unfair IMO, does it also fix emergency resupply?? that would truly be an exploit.

Another offtopic thing: engines use 10 supply per movement, so 6 ion engines use 360 supply. Does bonus also need supply, like solair sail 3 on top of 6 ione engines would use 9x60= 540 supply???