46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
from shapely.geometry import box
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from inire import CongestionOptions, NetSpec, ObjectiveWeights, Port, RoutingOptions, RoutingProblem, SearchOptions, route
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from inire.utils.visualization import plot_routing_results
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def main() -> None:
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print("Running Example 09: Best-Effort Under Tight Search Budget...")
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bounds = (0, 0, 100, 100)
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obstacles = [
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box(35, 35, 45, 65),
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box(55, 35, 65, 65),
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]
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problem = RoutingProblem(
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bounds=bounds,
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nets=(NetSpec("budget_limited_net", Port(10, 50, 0), Port(85, 60, 180), width=2.0),),
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static_obstacles=tuple(obstacles),
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)
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options = RoutingOptions(
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search=SearchOptions(
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node_limit=3,
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bend_radii=(10.0,),
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),
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objective=ObjectiveWeights(
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bend_penalty=50.0,
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sbend_penalty=150.0,
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),
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congestion=CongestionOptions(warm_start=None),
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)
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print("Routing with a deliberately tiny node budget (should return a partial path)...")
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run = route(problem, options=options)
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result = run.results_by_net["budget_limited_net"]
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if not result.reached_target:
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print(f"Target not reached as expected. Partial path length: {len(result.path)} segments.")
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else:
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print("The route unexpectedly reached the target. Increase difficulty or reduce the node budget further.")
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fig, _ax = plot_routing_results(run.results_by_net, list(obstacles), bounds, netlist={"budget_limited_net": (Port(10, 50, 0), Port(85, 60, 180))})
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fig.savefig("examples/09_unroutable_best_effort.png")
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print("Saved plot to examples/09_unroutable_best_effort.png")
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if __name__ == "__main__":
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main()
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