PostGIS  2.1.10dev-r@@SVN_REVISION@@
Datum LWGEOM_inside_circle_point ( PG_FUNCTION_ARGS  )

Definition at line 1068 of file lwgeom_functions_basic.c.

References lwgeom_as_lwpoint(), lwgeom_from_gserialized(), lwgeom_is_empty(), lwpoint_free(), and lwpoint_inside_circle().

1069 {
1070  GSERIALIZED *geom;
1071  double cx = PG_GETARG_FLOAT8(1);
1072  double cy = PG_GETARG_FLOAT8(2);
1073  double rr = PG_GETARG_FLOAT8(3);
1074  LWPOINT *lwpoint;
1075  LWGEOM *lwgeom;
1076  int inside;
1077 
1078  geom = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
1079  lwgeom = lwgeom_from_gserialized(geom);
1080  lwpoint = lwgeom_as_lwpoint(lwgeom);
1081  if ( lwpoint == NULL || lwgeom_is_empty(lwgeom) )
1082  {
1083  PG_FREE_IF_COPY(geom, 0);
1084  PG_RETURN_NULL(); /* not a point */
1085  }
1086 
1087  inside = lwpoint_inside_circle(lwpoint, cx, cy, rr);
1088  lwpoint_free(lwpoint);
1089 
1090  PG_FREE_IF_COPY(geom, 0);
1091  PG_RETURN_BOOL(inside);
1092 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwpoint_free(LWPOINT *pt)
Definition: lwpoint.c:180
int lwpoint_inside_circle(const LWPOINT *p, double cx, double cy, double rad)
Definition: lwgeom.c:522
LWPOINT * lwgeom_as_lwpoint(const LWGEOM *lwgeom)
Definition: lwgeom.c:80
LWGEOM * geom
int lwgeom_is_empty(const LWGEOM *geom)
Return true or false depending on whether a geometry is an "empty" geometry (no vertices members) ...
Definition: lwgeom.c:1229

Here is the call graph for this function: