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

extract_triangle() static void extract_triangle ( const LWTRIANGLE *  tri, MeosArray *  edges  ) static Add to the dynamic array in the last argument the edges obtained from a triangle. In PostGIS a triangle has a single (outer) ring stored as POINTARRAY, which is already closed or implicitly closed