/// <summary>
/// Get selected objects filtered by type and mark
/// </summary>
/// <param name="selMgr"></param>
/// <param name="filter"> <![CDATA[(type,mark)=>bool]]> if null then the default is true </param>
/// <returns></returns>
public static IReadOnlyList <object> GetSelectedObjects(this ISelectionMgr selMgr, Func <swSelectType_e, int, bool> filter)
{
return(selMgr.GetObjectSelections()
.Where(o => filter(o.Type, o.Mark))
.Select(o => o.Object)
.ToList());
}
