70 lines
2 KiB
Python
70 lines
2 KiB
Python
from shapely.geometry import Polygon
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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.config import CostConfig, RouterConfig
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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
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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 04: S-Bends and Multiple Radii...")
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# 1. Setup Environment
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bounds = (0, 0, 100, 100)
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engine = CollisionEngine(clearance=2.0)
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danger_map = DangerMap(bounds=bounds)
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danger_map.precompute([])
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# 2. Configure Router
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evaluator = CostEvaluator(
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engine,
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danger_map,
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unit_length_cost=1.0,
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greedy_h_weight=1.5,
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)
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# We want a 45 degree switchover for S-bend.
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# Offset O = 2 * R * (1 - cos(theta))
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# If R = 10, O = 5.86
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router = AStarRouter(
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evaluator,
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node_limit=50000,
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bend_radii=[10.0, 30.0],
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sbend_offsets=[5.0], # Use a simpler offset
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sbend_radii=[10.0],
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bend_penalty=10.0,
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sbend_penalty=20.0,
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snap_to_target_dist=50.0, # Large snap range
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)
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pf = PathFinder(router, evaluator)
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# 3. Define Netlist
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# start (10, 50), target (60, 55) -> 5um offset
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netlist = {
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"sbend_only": (Port(10, 50, 0), Port(60, 55, 0)),
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"multi_radii": (Port(10, 10, 0), Port(90, 90, 0)),
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}
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net_widths = {"sbend_only": 2.0, "multi_radii": 2.0}
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# 4. Route
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results = pf.route_all(netlist, net_widths)
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# 5. Check Results
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for nid, res in results.items():
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status = "Success" if res.is_valid else "Failed"
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print(f"{nid}: {status}, collisions={res.collisions}")
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# 6. Visualize
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fig, ax = plot_routing_results(results, [], bounds, netlist=netlist)
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fig.savefig("examples/sbends_radii.png")
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print("Saved plot to examples/sbends_radii.png")
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if __name__ == "__main__":
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main()
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