cbuffer_as_ewkt cbuffer_as_hexwkb cbuffer_as_text cbuffer_as_wkb cbuffer_cmp cbuffer_collinear cbuffer_contains cbuffer_copy cbuffer_covers cbuffer_disjoint cbuffer_distance cbuffer_dwithin cbuffer_eq cbuffer_from_hexwkb cbuffer_from_wkb cbuffer_ge cbuffer_gt cbuffer_hash cbuffer_hash_extended cbuffer_in cbuffer_intersects cbuffer_le cbuffer_lt cbuffer_make cbuffer_ne cbuffer_nsame cbuffer_out cbuffer_parse cbuffer_point cbuffer_point_p cbuffer_radius cbuffer_round cbuffer_same cbuffer_set_srid cbuffer_set_stbox cbuffer_srid cbuffer_to_geom cbuffer_to_set cbuffer_to_stbox cbuffer_touches cbuffer_transf_pj cbuffer_transform cbuffer_transform_pipeline cbuffer_wkt_out cbufferarr_round cbufferarr_set_stbox cbufferarr_to_geom cbuffersegm_interpolate cbuffersegm_locate contains_cbuffer_cbuffer covers_cbuffer_cbuffer datum_cbuffer_contains datum_cbuffer_covers datum_cbuffer_disjoint datum_cbuffer_distance datum_cbuffer_dwithin datum_cbuffer_intersects datum_cbuffer_round datum_cbuffer_touches disjoint_cbuffer_cbuffer distance_cbuffer_cbuffer distance_cbuffer_geo distance_cbuffer_stbox dwithin_cbuffer_cbuffer ensure_valid_cbuffer_cbuffer ensure_valid_cbuffer_geo ensure_valid_cbuffer_stbox ensure_valid_cbufferset_cbuffer geom_to_cbuffer intersects_cbuffer_cbuffer point_in_circle point_inside_circle spatialrel_cbuffer touches_cbuffer_cbuffer

point_inside_circle() bool point_inside_circle ( const POINT2D *  center, double  radius, double  x, double  y  ) Return 1 if a point is inside a circle, 0 otherwise. Note Inspired by https://stackoverflow.com/questions/481144/equation-for-testing-if-a-point-is-inside-a-circle