Ryan Malloy d4aa4c729d Add IntBox convex tile and geometry package exports
Ports IntBox, the simplest concrete convex tile (RegularTileShape): exact
integer-corner rectangle with contains (border-inclusive and interior),
intersection, union, intersects/overlaps, offset (round half up),
horizontal/vertical offset, shrink, box containment, translate, and
dimension. Adds the package __init__ exporting the geometry API.

The general convex machinery beyond IntBox — TileShape/Simplex/IntOctagon
and polygon split_to_convex — is deferred to the next geometry phase.

Tests cover boundary vs interior containment, degenerate tiles
(empty/point/segment), edge-touching intersects-vs-overlaps, rational
point on a border, and half-up offset rounding.
2026-07-11 18:01:37 -06:00

freeroute

A native Python PCB autorouter — a Java-free port of the FreeRouting engine.

Why

kicad-mcp currently autoroutes by shelling out to freerouting.jar, which drags in a JVM dependency. freeroute reimplements the routing engine in pure Python so the toolchain needs no Java at all.

The contract

The entire integration surface is two Specctra files:

board.dsn  ──▶  freeroute  ──▶  board.ses
(unrouted)                       (routed session: traces + vias)

kicad-cli already exports .dsn and imports .ses, so freeroute is a drop-in replacement for the JAR step — nothing else in the pipeline changes.

Status

Pre-alpha. Under active development. See docs/PORTING_PLAN.md for the architecture and porting roadmap.

Usage (target)

freeroute board.dsn -o board.ses

Development

uv sync
uv run pytest
uv run ruff check src/ tests/

License

GPL-3.0-or-later, matching the FreeRouting source it is ported from.

Description
Native Python PCB autorouter — a Java-free port of the FreeRouting engine (Specctra DSN in, SES out)
Readme GPL-3.0 391 KiB
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