trait TrackTableExt {
    // Required methods
    fn hor_tracking(&self, ptem: f32) -> Option<i32>;
    fn ver_tracking(&self, ptem: f32) -> Option<i32>;
}trait TrackTableExt {
    // Required methods
    fn hor_tracking(&self, ptem: f32) -> Option<i32>;
    fn ver_tracking(&self, ptem: f32) -> Option<i32>;
}