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SimpleCADAPI-master/examples/02_graph_replay.py

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+"""Record a replayable model graph, export model JSON, then replay it.
+
+Run from the repository root with:
+    uv run python examples/02_graph_replay.py
+"""
+
+from pathlib import Path
+
+import simplecadapi as scad
+from simplecadapi import ql as Q
+
+
+OUT = Path("examples/out")
+OUT.mkdir(parents=True, exist_ok=True)
+
+
+with scad.GraphSession() as session:
+    body = scad.make_box_rsolid(40.0, 24.0, 10.0, bottom_face_center=(0.0, 0.0, 0.0))
+    cutter = scad.make_cylinder_rsolid(4.0, 16.0, bottom_face_center=(0.0, 0.0, -3.0))
+    drilled = scad.cut_rsolid(body, cutter)
+
+    # Use a serializable QL selector instead of relying on OCC edge iteration order.
+    bottom_circle = (
+        Q.edges()
+        .where(Q.curve_type("circle"))
+        .order_by(Q.center_axis("z"))
+        .take(1)
+        .exactly(1)
+    )
+    final = scad.chamfer_rsolid(drilled, bottom_circle, 0.6)
+
+model_json = scad.export_model_json(session)
+(OUT / "graph_replay.model.json").write_text(model_json, encoding="utf-8")
+
+rebuilt = scad.replay_model_json(model_json)
+print("recorded_nodes", session.graph.node_count)
+print("replayed_outputs", len(rebuilt))
+print("replayed_type", type(rebuilt[0]).__name__ if rebuilt else "none")
+print("wrote", OUT / "graph_replay.model.json")