pub fn create_target_rtree(
y: impl Iterator<Item = LineString>,
dist: f64,
) -> RTree<GeomWithData<CachedEnvelope<TarLine>, (usize, f64)>>pub fn create_target_rtree(
y: impl Iterator<Item = LineString>,
dist: f64,
) -> RTree<GeomWithData<CachedEnvelope<TarLine>, (usize, f64)>>