initial

export_panel_outlines_gerber.py

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+#!/usr/bin/env python3
+import argparse
+import os
+import pcbnew
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Export a single PCB layer to a Gerber file using pcbnew."
+    )
+    parser.add_argument("input", help="Input .kicad_pcb file")
+    parser.add_argument("--output", "-o", required=True, help="Output directory")
+    parser.add_argument("--layers", "-l", required=True,
+                        help="Layer name to export (e.g. User.Eco1)")
+    args = parser.parse_args()
+
+    board = pcbnew.LoadBoard(args.input)
+
+    # Resolve layer name to ID
+    layer_id = board.GetLayerID(args.layers)
+    if layer_id == -1:
+        parser.error(f"Unknown layer: {args.layers!r}. "
+                     f"Run with a known layer name (e.g. User.Eco1, Edge.Cuts).")
+
+    # Resolve output directory to absolute path so pcbnew doesn't make it
+    # relative to the board file location
+    output_dir = os.path.abspath(args.output)
+    os.makedirs(output_dir, exist_ok=True)
+
+    prefix = args.layers.replace(".", "-")
+
+    pc = pcbnew.PLOT_CONTROLLER(board)
+    po = pc.GetPlotOptions()
+    po.SetOutputDirectory(output_dir)
+    po.SetPlotFrameRef(False)
+
+    pc.SetLayer(layer_id)
+    pc.OpenPlotfile(prefix, pcbnew.PLOT_FORMAT_GERBER, args.layers)
+    print(f"Plotting layer {args.layers!r} (id={layer_id}) to {pc.GetPlotFileName()}")
+    pc.PlotLayer()
+    pc.ClosePlot()
+    print("Done.")
+
+if __name__ == "__main__":
+    main()