convert step to OBJ for web output

step_to_obj_headless.py

@@ -0,0 +1,42 @@
+import os, sys
+import FreeCAD as App
+import Part
+import Import
+import MeshPart
+
+def convert(step_path, out_path, lin=0.1, ang=0.35):
+    doc = App.newDocument("conv")
+    Import.insert(os.path.abspath(step_path), doc.Name)
+    doc.recompute()
+
+    shapes = []
+    for o in doc.Objects:
+        if hasattr(o, "Shape") and o.Shape and not o.Shape.isNull():
+            shapes.append(o.Shape)
+
+    if not shapes:
+        raise RuntimeError("Keine Shapes gefunden.")
+
+    compound = Part.makeCompound(shapes) if len(shapes) > 1 else shapes[0]
+    mesh = MeshPart.meshFromShape(
+        Shape=compound, LinearDeflection=lin, AngularDeflection=ang, Relative=False
+    )
+    mesh.write(os.path.abspath(out_path))
+    App.closeDocument(doc.Name)
+
+def main(argv):
+    #print(argv, len(argv))
+    if len(argv) < 3:
+        print("Usage: FreeCADCmd script.py -- input.step output.stl [lin_defl] [ang_defl]")
+        return 1
+    inp = argv[2]
+    out = argv[3]
+    lin = float(argv[4]) if len(argv) > 4 else 0.1
+    ang = float(argv[5]) if len(argv) > 5 else 0.35
+    convert(inp, out, lin, ang)
+    print(f"OK: {inp} -> {out}")
+    return 0
+
+# WICHTIG: immer ausführen (FreeCAD setzt __name__ nicht zuverlässig auf "__main__")
+raise SystemExit(main(sys.argv))
+