/// <summary>
/// 获取除了外环的所有环
/// </summary>
/// <param name="face">IFace Interface</param>
/// <returns></returns>
public static IEnumerable <ILoop2> GetLoopsWithoutOuterLoop(this IFace2 face)
{
return(face.GetLoopsEx().Where(loop => !loop.IsOuter()));
}
/// <summary>
/// 获取外环
/// </summary>
/// <param name="face">IFace Interface</param>
/// <returns></returns>
public static ILoop2 GetOuterLoop(this IFace2 face)
{
return(face.GetLoopsEx().Where(loop => loop.IsOuter()).FirstOrDefault());
}
