PostGIS  2.5.1dev-r@@SVN_REVISION@@

◆ relate_pattern()

Datum relate_pattern ( PG_FUNCTION_ARGS  )

Definition at line 2387 of file postgis/lwgeom_geos.c.

References error_if_srid_mismatch(), errorIfGeometryCollection(), gserialized_get_srid(), HANDLE_GEOS_ERROR, lwgeom_geos_error(), PG_FUNCTION_INFO_V1(), POSTGIS2GEOS(), and relate_full().

Referenced by disjoint().

2388 {
2389  GSERIALIZED *geom1;
2390  GSERIALIZED *geom2;
2391  char *patt;
2392  char result;
2393  GEOSGeometry *g1, *g2;
2394  size_t i;
2395 
2396  geom1 = PG_GETARG_GSERIALIZED_P(0);
2397  geom2 = PG_GETARG_GSERIALIZED_P(1);
2398 
2399  /* TODO handle empty */
2400 
2401  errorIfGeometryCollection(geom1,geom2);
2403 
2404  initGEOS(lwpgnotice, lwgeom_geos_error);
2405 
2406  g1 = POSTGIS2GEOS(geom1);
2407  if (!g1)
2408  HANDLE_GEOS_ERROR("First argument geometry could not be converted to GEOS");
2409  g2 = POSTGIS2GEOS(geom2);
2410  if (!g2)
2411  {
2412  GEOSGeom_destroy(g1);
2413  HANDLE_GEOS_ERROR("Second argument geometry could not be converted to GEOS");
2414  }
2415 
2416  patt = DatumGetCString(DirectFunctionCall1(textout,
2417  PointerGetDatum(PG_GETARG_DATUM(2))));
2418 
2419  /*
2420  ** Need to make sure 't' and 'f' are upper-case before handing to GEOS
2421  */
2422  for ( i = 0; i < strlen(patt); i++ )
2423  {
2424  if ( patt[i] == 't' ) patt[i] = 'T';
2425  if ( patt[i] == 'f' ) patt[i] = 'F';
2426  }
2427 
2428  result = GEOSRelatePattern(g1,g2,patt);
2429  GEOSGeom_destroy(g1);
2430  GEOSGeom_destroy(g2);
2431  pfree(patt);
2432 
2433  if (result == 2) HANDLE_GEOS_ERROR("GEOSRelatePattern");
2434 
2435  PG_FREE_IF_COPY(geom1, 0);
2436  PG_FREE_IF_COPY(geom2, 1);
2437 
2438  PG_RETURN_BOOL(result);
2439 }
void error_if_srid_mismatch(int srid1, int srid2)
Definition: lwutil.c:338
void lwgeom_geos_error(const char *fmt,...)
GEOSGeometry * POSTGIS2GEOS(GSERIALIZED *pglwgeom)
#define HANDLE_GEOS_ERROR(label)
int32_t gserialized_get_srid(const GSERIALIZED *s)
Extract the SRID from the serialized form (it is packed into three bytes so this is a handy function)...
Definition: g_serialized.c:99
void errorIfGeometryCollection(GSERIALIZED *g1, GSERIALIZED *g2)
Throws an ereport ERROR if either geometry is a COLLECTIONTYPE.
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