inire/examples/05_orientation_stress.py

from inire.geometry.collision import CollisionEngine
from inire.geometry.primitives import Port
from inire.router.astar import AStarRouter
from inire.router.cost import CostEvaluator
from inire.router.danger_map import DangerMap
from inire.router.pathfinder import PathFinder
from inire.utils.visualization import plot_routing_results


def main() -> None:
    print("Running Example 05: Orientation Stress Test...")

    # 1. Setup Environment
    bounds = (0, 0, 200, 200)
    engine = CollisionEngine(clearance=2.0)
    danger_map = DangerMap(bounds=bounds)
    danger_map.precompute([])

    evaluator = CostEvaluator(engine, danger_map, greedy_h_weight=1.5, bend_penalty=50.0, sbend_penalty=150.0)
    router = AStarRouter(evaluator, snap_size=1.0, bend_radii=[10.0], sbend_radii=[10.0])
    pf = PathFinder(router, evaluator)

    # 2. Define Netlist: Complex orientation challenges
    netlist = {
        "u_turn": (Port(50, 100, 0), Port(30, 100, 180)),
        "loop": (Port(150, 50, 90), Port(150, 40, 90)),
        "zig_zag": (Port(20, 20, 0), Port(180, 180, 0)),
    }
    net_widths = {nid: 2.0 for nid in netlist}

    # 3. Route
    print("Routing complex orientation nets...")
    results = pf.route_all(netlist, net_widths)

    # 4. Check Results
    for nid, res in results.items():
        status = "Success" if res.is_valid else "Failed"
        print(f"  {nid}: {status}")

    # 5. Visualize
    fig, ax = plot_routing_results(results, [], bounds, netlist=netlist)
    fig.savefig("examples/05_orientation_stress.png")
    print("Saved plot to examples/05_orientation_stress.png")


if __name__ == "__main__":
    main()