Function _compiler_dirs

Scripts/clean_meshes.py:123–132

Return (meshdir, texturedir, assetdir) declared by any directly under ``root``. MuJoCo allows several compiler elements; later ones win for a given attribute, matching the C++ importer's last-writer behaviour.

(root)

        if np.allclose(size, 0):
            print(f"  Warning: Mesh has zero size!")

        # include_normals: trimesh omits the NORMAL accessor by default and
        # Unreal then builds the mesh with zero normals ("degenerate tangent
        # bases" / "nearly zero normals" on every import).
        cleaned_mesh.export(str(output_path), include_normals=True)
        print(f"  -> Saved: {output_path.name}")
        return True

    except Exception as e:
        print(f"  x Error: {e}")
        return False