Kaba class Model ed

class Model extends Data
    var binary_file_format: bool
    var bone: Bone[]
    var dummy: i32
    var file_time: i32
    var filename: Path
    var fx: Effect[]
    var material: Material[]
    var mesh: Mesh&
    var meta_data: MetaData
    var move: Move[]
    var phys_mesh: Mesh&
    var skin: Skin[4]
    var type: i32

    # constructors
    func mut __init__()

    # functions
    func add_animation(index: i32, type: Type)
    func add_polygon(v: i32[], material: i32) -> Polygon&
    func add_triangle(a: i32, b: i32, c: i32, material: i32) -> Polygon&
    func add_vertex(pos: vec3, bone_index: i32, normal_mode: i32)
    func animation_add_frame(index: i32, frame: i32, f: Frame)
    func animation_delete_frame(index: i32, frame: i32)
    func animation_set_bone(move: i32, frame: i32, bone: i32, dpos: vec3, ang: vec3)
    func animation_set_data(index: i32, name: string, fps_const: f32, fps_factor: f32)
    func animation_set_frame_duration(index: i32, frame: i32, duration: f32)
    func bevel_selected_vertices(radius: f32)
    func clear_selection()
    func convert_selection_to_triangles()
    func delete_animation(index: i32)
    func delete_polygon(index: i32)
    func delete_selection(s: Selection, greedy: bool)
    func duplicate_animation(source: i32, target: i32)
    func extrude_selected_polygons(offset: f32)
    func invert_polygons(s: Selection)
    func paste_geometry(g: Geometry, default_material: i32)
    func selection_from_polygons()
    func selection_from_vertices()
    func subtract_selection()
    func triangulate_selected_vertices()

    # operators
    func mut __assign__(other: Model)    # Model = Model

    # constants
    const MAX_POLY_EDGES: i32
    const MAX_POLY_FACES: i32
    const MAX_POLY_VERTICES_PER_FACE: i32

    # nested classes
    class Ball
    class Bone
    class Effect
    class Material
    class Mesh
    class MetaData
    class Move
    class Polyhedron
    class Selection
    class Skin
    class SkinVertexDummy
    class SubSkin
    class Triangle