Section

class sgio.Section(name: str, material: str, orientation: float = 0.0, property_id: int | None = None, source_ids: dict[str, int] = <factory>, extras: dict[str, ~typing.Any] = <factory>)

Bases: object

Finite-element section definition for SG material regions.

Parameters:

• name (str) – Section name.

• material (str) – Material name referenced from FEModel.materials.

• orientation (float, optional) – In-plane material orientation angle in degrees.

• property_id (int or None, optional) – Internal element->section binding key. It is the integer that tags each element in mesh.cell_data["property_id"] and keys the legacy mocombos view; sections read from a mesh are created from it. It is an internal implementation detail, not a user-authored field and not part of the public SG-on-Gmsh serialization contract (the sidecars use name/id, never property_id). For the id a section carried in a specific solver file, use source_ids instead.

• source_ids (dict[str, int], optional) – Per-format provenance of the integer id this section carried in the solver file it was read from, keyed by format name (e.g. {"vabs": 3}). Enables same-format round-trip fidelity: a writer prefers the remembered id for its format, then fills gaps deterministically. Not user-authored; populated by adapter readers.

• extras (dict[str, Any], optional) – Additional adapter-specific metadata.

Orientation

class sgio.Orientation(name: str, angle: float = 0.0, extras: dict[str, ~typing.Any] = <factory>)

Bases: object

Placeholder FE orientation object.

Parameters:

• name (str) – Orientation name.

• angle (float, optional) – Simple scalar orientation angle in degrees.

• extras (dict[str, Any], optional) – Additional adapter-specific metadata.