PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ hausdorffdistancedensify()

Datum hausdorffdistancedensify ( PG_FUNCTION_ARGS  )

Definition at line 223 of file postgis/lwgeom_geos.c.

224 {
225  GSERIALIZED *geom1;
226  GSERIALIZED *geom2;
227  GEOSGeometry *g1;
228  GEOSGeometry *g2;
229  double densifyFrac;
230  double result;
231  int retcode;
232 
233  geom1 = PG_GETARG_GSERIALIZED_P(0);
234  geom2 = PG_GETARG_GSERIALIZED_P(1);
235  densifyFrac = PG_GETARG_FLOAT8(2);
236 
237  if ( gserialized_is_empty(geom1) || gserialized_is_empty(geom2) )
238  PG_RETURN_NULL();
239 
240  initGEOS(lwpgnotice, lwgeom_geos_error);
241 
242  g1 = POSTGIS2GEOS(geom1);
243  if (!g1)
244  HANDLE_GEOS_ERROR("First argument geometry could not be converted to GEOS");
245 
246  g2 = POSTGIS2GEOS(geom2);
247  if (!g2)
248  {
249  GEOSGeom_destroy(g1);
250  HANDLE_GEOS_ERROR("Second argument geometry could not be converted to GEOS");
251  }
252 
253  retcode = GEOSHausdorffDistanceDensify(g1, g2, densifyFrac, &result);
254  GEOSGeom_destroy(g1);
255  GEOSGeom_destroy(g2);
256 
257  if (retcode == 0) HANDLE_GEOS_ERROR("GEOSHausdorffDistanceDensify");
258 
259  PG_FREE_IF_COPY(geom1, 0);
260  PG_FREE_IF_COPY(geom2, 1);
261 
262  PG_RETURN_FLOAT8(result);
263 }
char result[OUT_DOUBLE_BUFFER_SIZE]
Definition: cu_print.c:267
int gserialized_is_empty(const GSERIALIZED *g)
Check if a GSERIALIZED is empty without deserializing first.
Definition: gserialized.c:152
void lwgeom_geos_error(const char *fmt,...)
#define HANDLE_GEOS_ERROR(label)
GEOSGeometry * POSTGIS2GEOS(const GSERIALIZED *pglwgeom)

References gserialized_is_empty(), HANDLE_GEOS_ERROR, lwgeom_geos_error(), POSTGIS2GEOS(), and result.

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