Kaba struct Polygon ed

struct Polygon extends SingleData
    var is_selected: bool
    var is_special: bool
    var m_delta: bool
    var m_old: bool
    var material: i32
    var normal_dirty: bool
    var pos: vec3
    var side: Side[]
    var temp_normal: vec3
    var triangulation_dirty: bool
    var view_stage: i32

    # constructors
    func mut __init__()

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

    # nested classes
    class Side