David Stadelmann 2e6bfab744 feat: Add s-shape wire style and u-at anchor placement ...

Introduces a new "s-shape" wire style connecting two ports on opposite
cardinal sides (east<->west or north<->south) via 5 segments joined at
4 corners (u1-start, u1-end, u2-start, u2-end). The axis is auto-detected
from port anchors; when both endpoints share the same perpendicular
coordinate (single-block loopback) `s-ratio-mid` is reinterpreted as an
absolute signed offset so the crossbar can still be placed above or
below the endpoints.

Also adds `u-at` to the "u-shape" style, an anchor-based crossbar
placement analogous to `zigzag-at`. `u-depth` now defaults to
`auto` to allow clean mutual-exclusion with `u-at`.

Factors the shared placement normalizer into
`normalize-scalar-offset(at, axis)`; `normalize-zigzag-at` remains as
a thin backwards-compatible wrapper.

2026-09-30 15:58:01 +02:00

847 KiB

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