46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
from inire.geometry.collision import CollisionEngine
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from inire.geometry.primitives import Port
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from inire.router.astar import AStarRouter
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from inire.router.cost import CostEvaluator
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from inire.router.danger_map import DangerMap
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from inire.router.pathfinder import PathFinder, RoutingResult
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from inire.utils.visualization import plot_routing_results
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from shapely.geometry import box
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def main() -> None:
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print("Running Example 09: Unroutable Nets & Best Effort Display...")
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bounds = (0, 0, 100, 100)
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engine = CollisionEngine(clearance=2.0)
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# A large obstacle that completely blocks the target port
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blocking_obs = box(40, 0, 60, 100)
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engine.add_static_obstacle(blocking_obs)
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danger_map = DangerMap(bounds=bounds)
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danger_map.precompute([blocking_obs])
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evaluator = CostEvaluator(engine, danger_map)
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# Use a low node limit to fail quickly
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router = AStarRouter(evaluator, node_limit=5000)
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netlist = {
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"blocked_net": (Port(10, 50, 0), Port(90, 50, 180))
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}
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print("Routing blocked net (expecting failure)...")
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# Manually call route with return_partial=True
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path = router.route(netlist["blocked_net"][0], netlist["blocked_net"][1], 2.0,
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net_id="blocked_net", return_partial=True)
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# Wrap in RoutingResult. Even if path is returned, is_valid=False
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results = {
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"blocked_net": RoutingResult("blocked_net", path if path else [], False, 1)
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}
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fig, ax = plot_routing_results(results, [blocking_obs], bounds, netlist=netlist)
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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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