tcontains_geo_tpoint tdwithin_add_solutions tdwithin_tpoint_geo tdwithin_tpoint_tpoint tdwithin_tpoint_tpoint1 tdwithin_tpointsegm_tpointsegm tdwithin_tpointseq_point tdwithin_tpointseq_point1 tdwithin_tpointseq_tpointseq tdwithin_tpointseq_tpointseq2 tdwithin_tpointseqset_point tdwithin_tpointseqset_tpointseqset tinterrel_tpoint_geo tinterrel_tpointcontseq_geom tinterrel_tpointcontseq_geom1 tinterrel_tpointdiscseq_geom tinterrel_tpointinst_geom tinterrel_tpointseq_simple_geom tinterrel_tpointseq_step_geom tinterrel_tpointseqset_geom ttouches_tpoint_geo

tinterrel_tpointinst_geom() TInstant * tinterrel_tpointinst_geom ( const TInstant *  inst, Datum  geom, bool  tinter, Datum(*)(Datum, Datum)  func  ) Temporal spatial relationships for temporal points. These relationships are applied at each instant and result in a temporal Boolean. The following relationships are supported for a temporal geometry point and a geometry: tcontains, tdisjoint, tintersects, ttouches, and tdwithin. The following relationships are supported for two temporal geometry points: tdwithin. The following relationships are supported for two temporal geography points: tdisjoint, tintersects, tdwithin. tintersects and tdisjoint for a temporal point and a geometry allow a fast implementation by (1) using bounding box tests, and (2) splitting temporal sequence points into an array of simple (that is, not self-intersecting) fragments and the answer is computed for each fragment without any additional call to PostGIS. The implementation of tcontains and ttouches involving a temporal point and a geometry is derived from the above by computing the boundary of the geometry and (1) tcontains(geo, tpoint) = tintersects(geo, tpoint) & ~ tintersects(st_boundary(geo), tpoint) where & and ~ are the temporal boolean operators and and not (2) ttouches(geo, tpoint) = tintersects(st_boundary(geo), tpoint) Notice also that twithin has a custom implementation as follows In the case of a temporal point and a geometry we (1) call PostGIS to compute a buffer of the geometry and the distance parameter d, and (2) compute the result from tpointseq_at_geometry(seq, geo_buffer) In the case of two temporal points we need to compute the instants at which two temporal sequences have a distance d between each other, which amounts to solve the equation distance(seg1(t), seg2(t)) = d. Evaluates tintersects/tdisjoint for a temporal point and a geometry. Parameters [in] inst Temporal point [in] geom Geometry [in] tinter True when computing tintersects, false for tdisjoint [in] func PostGIS function to be called