build_edge_rtree EdgeType emit_ring_edges events extract_line extract_mline extract_mpoint extract_mpoly extract_point extract_poly extract_triangle float8_qsort_cmp geom_extract_edges geom_extract_edges_iter IntersectType intervals intervals_from_lines intervals_from_points intervals_from_polygons linesegm_intersect periods point_in_polygon point_inter_points_lines point_on_segment RTREE_MIN_NUMBER_ELEMS rtree_results tpoint_linear_inter_geom tpoint_linear_restrict_geom tpointinst_clip_edges tpointseq_clip_edges

point_on_segment() static bool point_on_segment ( double  px, double  py, double  x1, double  y1, double  x2, double  y2  ) static Return true if a point is located on a segment.