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I laid out a 12x12 grid of lamps and measured how far green wires could stretch between the lamps.

One corner could connect to a lamp 10 lamps to the left. It could also connect to a lamp 10 to the left and 1 down, for a length of sqrt(101) = ~10.0499. It could not connect to a lamp 10 to the left and 2 down, a length of sqrt(104) = ~10.198.

However, I could also connect to a lamp 9 to the left and 5 down, sqrt(106) = ~10.296. away from the first lamp.

This seems quite inconsistent. I suppose it is also possible lamps have a different horizontal and vertical size, but they do look like squares.

Thanks for the report. Wire connection distance is not based off entity center position <> center position but the distance between the selection boxes of the entities.

Thank you, that is a succinct explanation of where my assumptions were false. It even makes sense. Of course the wire can start from the SE corner and stretch to the NW corner, for example, instead of always having to touch the same location on the object. In my defense, the graphics do show them always touching the same (SE) corner of the lamp.