discontinuedPackage jet_cad_floor_plan has been discontinued and replaced by jet_cad_2d_plan.

localOutlineOf function

({bool fellBack, List<Handle>? hole, List<Vector2> ring}) localOutlineOf(WorldWall self, List<WorldWall> neighbours)

self's outline in its group-local space among neighbours (spec 07 D4-D6; Ruling 10-8): what WallType stores and diagnoses, and what a room traces once it is taken back to world (spec 10 D4, R-5). One function, so the wall and both of the rooms' adapters compute one ring.

The world ring (outline) is taken to local space through self.toWorld.invert(). outline judged it simple in world, but the mapping rounds, and a folded mitre spike that clears a crossing by ~1e-10 can cross after it (07's final review I1). A local ring that is not simple and anticlockwise is replaced by self's free rectangle computed in local space -- the wall at the identity with no neighbours -- and counts as a fallback: storing it would fail the planner's triangulation check and refuse the edit. Empty for a degenerate wall.

Implementation

({List<Vector2> ring, bool fellBack, List<Handle>? hole}) localOutlineOf(
    WorldWall self, List<WorldWall> neighbours) {
  final o = outline(self, neighbours);
  if (o.ring.isEmpty) return o;
  final toLocal = self.toWorld.invert();
  final local = [for (final q in o.ring) toLocal.transformPoint(q)];
  if (isSimpleCcw(local)) {
    return (ring: local, fellBack: o.fellBack, hole: o.hole);
  }
  return (
    ring: outline(WorldWall(self.handle, self.params, Transform2.identity()),
        const []).ring,
    fellBack: true,
    hole: o.hole,
  );
}