Tried simplifying things a bit, although not nearly as much as I wanted.
Ideally, we'd either have one of two situations:
- A single set of calculations based on values depending on the
direction of the connection
- A bunch of "generic" calculations done before applying simple
modifiers to them in the final `if` block
Right now it's an icky mix of both and I'm not really sure what to make
of it.
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