SegmentGeoPoint

Describes a geographic point on a segment and the direction of the segment. The geometry of the route is a sequence of points that form segments pairwise. In all functions that work with the geometry of the route, it is assumed that the first point from the pair forming the segment belongs to this segment, and the second one does not: [point_1, point_2),[point_2, point_3),...,[point_n-1, point_n)point_last. The last point forms a zero-length segment with itself. Thus, each point on the route belongs to exactly one segment. The direction of the point_last is not defined.