_FCINFO alpha bearing_geo_geo bearing_geo_tpoint bearing_tpoint_geo bearing_tpoint_geo_internal bearing_tpoint_tpoint bearing_tpoint_tpoint_internal closest_point2d_on_segment_ratio closest_point3dz_on_segment_ratio closest_point_on_segment_sphere datan datan2 datum_get_point2d datum_get_point2d_p datum_get_point3dz datum_get_point3dz_p datum_get_point4d datum_point_eq datum_set_precision datum_set_precision_circularstring datum_set_precision_geometrycollection datum_set_precision_linestring datum_set_precision_multilinestring datum_set_precision_multipoint datum_set_precision_multipolygon datum_set_precision_point datum_set_precision_polygon datum_set_precision_triangle datum_transform dcos dsin ensure_has_M_gs ensure_has_not_M_gs ensure_has_not_Z_gs ensure_has_Z ensure_has_Z_gs ensure_has_Z_tpoint ensure_non_empty ensure_not_geodetic ensure_not_geodetic_gs ensure_point_type ensure_same_dimensionality ensure_same_dimensionality_gs ensure_same_dimensionality_tpoint_gs ensure_same_geodetic ensure_same_geodetic_gs ensure_same_spatial_dimensionality ensure_same_spatial_dimensionality_stbox_gs ensure_same_srid ensure_same_srid_stbox ensure_same_srid_stbox_gs ensure_same_srid_tpoint_stbox ensure_spatial_validity fetch_fcinfo geo_serialize geo_set_precision geog_azimuth geog_bearing geog_distance GEOG_FROM_GEOM geom_azimuth geom_bearing geom_distance2d geom_distance3d GEOM_FROM_GEOG geopoint_collinear geopoint_line geopoint_lwline geoseg_interpolate_point geoseg_locate_point get_bearing_fn get_distance_fn get_pt_distance_fn gs_get_point2d_p gs_get_point3dz_p GS_POINT_PTR gsinter_get_points lw_seg_interact lwpointarr_make_trajectory M_PI MOBDB_SEG_INTER_TYPE parseg2d_intersection point2D_add_z point2D_assemble point_get_x point_get_y point_get_z point_make pt_distance2d pt_distance3d RADIANS_PER_DEGREE seg2d_intersection set_precision_circularstring set_precision_linestring set_precision_multilinestring set_precision_multipoint set_precision_multipolygon set_precision_point set_precision_polygon set_precision_triangle stbox_set_srid stbox_srid stbox_transform store_fcinfo tgeogpoint_to_tgeompoint tgeogpointseq_intersection tgeompoint_to_tgeogpoint tgeompointseq_intersection tpoint_add_z tpoint_assemble_coords_xy tpoint_at_geometry tpoint_at_stbox tpoint_at_stbox_internal tpoint_azimuth tpoint_convert_tgeom_tgeog tpoint_cumulative_length tpoint_geo_min_bearing_at_timestamp tpoint_get_coord_internal tpoint_get_x tpoint_get_y tpoint_get_z tpoint_instarr_find_splits tpoint_instarr_is_simple tpoint_is_simple tpoint_length tpoint_make_simple tpoint_min_bearing_at_timestamp tpoint_minus_geometry tpoint_minus_stbox tpoint_minus_stbox_internal tpoint_restrict_geometry tpoint_restrict_geometry_internal tpoint_restrict_stbox tpoint_set_precision tpoint_set_srid tpoint_set_srid_internal tpoint_speed tpoint_srid tpoint_srid_internal tpoint_trajectory tpoint_trajectory_external tpoint_trajectory_free tpoint_trajectory_internal tpoint_transform tpoint_twcentroid tpoint_twcentroid_internal tpointinst_convert_tgeom_tgeog tpointinst_cumulative_length tpointinst_restrict_geometry tpointinst_set_srid tpointinst_srid tpointinst_transform tpointinstset_convert_tgeom_tgeog tpointinstset_cumulative_length tpointinstset_is_simple tpointinstset_make_simple tpointinstset_make_simple1 tpointinstset_restrict_geometry tpointinstset_set_srid tpointinstset_split tpointinstset_srid tpointinstset_trajectory tpointinstset_transform tpointinstset_twcentroid tpointseq_at_geometry tpointseq_azimuth tpointseq_azimuth1 tpointseq_convert_tgeom_tgeog tpointseq_cumulative_length tpointseq_interperiods tpointseq_intersection_value tpointseq_is_simple tpointseq_length tpointseq_linear_at_geometry tpointseq_linear_find_splits tpointseq_make_simple tpointseq_make_simple1 tpointseq_make_trajectory tpointseq_minus_geometry1 tpointseq_restrict_geometry tpointseq_set_srid tpointseq_speed tpointseq_split tpointseq_srid tpointseq_step_at_geometry tpointseq_timestamp_at_value tpointseq_timestamp_at_value1 tpointseq_trajectory tpointseq_trajectory_copy tpointseq_transform tpointseq_twcentroid tpointseqset_azimuth tpointseqset_convert_tgeom_tgeog tpointseqset_cumulative_length tpointseqset_is_simple tpointseqset_length tpointseqset_make_simple tpointseqset_restrict_geometry tpointseqset_set_srid tpointseqset_speed tpointseqset_srid tpointseqset_trajectory tpointseqset_transform tpointseqset_twcentroid

seg2d_intersection() static int seg2d_intersection ( const POINT2D  a, const POINT2D  b, const POINT2D  c, const POINT2D  d, POINT2D *  p  ) static Finds the UNIQUE point of intersection p between two closed segments ab and cd. Returns p and a MOBDB_SEG_INTER_TYPE value. Notice that if the segments overlap no point is returned since they can be an infinite number of them