PostGIS  2.5.1dev-r@@SVN_REVISION@@

◆ ST_Split()

Datum ST_Split ( PG_FUNCTION_ARGS  )

Definition at line 3178 of file postgis/lwgeom_geos.c.

References error_if_srid_mismatch(), geometry_serialize(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_split(), PG_FUNCTION_INFO_V1(), LWGEOM::srid, and ST_SharedPaths().

Referenced by ST_Snap().

3179 {
3180  GSERIALIZED *in, *blade_in, *out;
3181  LWGEOM *lwgeom_in, *lwblade_in, *lwgeom_out;
3182 
3183  in = PG_GETARG_GSERIALIZED_P(0);
3184  lwgeom_in = lwgeom_from_gserialized(in);
3185 
3186  blade_in = PG_GETARG_GSERIALIZED_P(1);
3187  lwblade_in = lwgeom_from_gserialized(blade_in);
3188 
3189  error_if_srid_mismatch(lwgeom_in->srid, lwblade_in->srid);
3190 
3191  lwgeom_out = lwgeom_split(lwgeom_in, lwblade_in);
3192  lwgeom_free(lwgeom_in);
3193  lwgeom_free(lwblade_in);
3194 
3195  if ( ! lwgeom_out )
3196  {
3197  PG_FREE_IF_COPY(in, 0); /* possibly referenced by lwgeom_out */
3198  PG_FREE_IF_COPY(blade_in, 1);
3199  PG_RETURN_NULL();
3200  }
3201 
3202  out = geometry_serialize(lwgeom_out);
3203  lwgeom_free(lwgeom_out);
3204  PG_FREE_IF_COPY(in, 0); /* possibly referenced by lwgeom_out */
3205  PG_FREE_IF_COPY(blade_in, 1);
3206 
3207  PG_RETURN_POINTER(out);
3208 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1144
void error_if_srid_mismatch(int srid1, int srid2)
Definition: lwutil.c:338
int32_t srid
Definition: liblwgeom.h:401
GSERIALIZED * geometry_serialize(LWGEOM *lwgeom)
LWGEOM * lwgeom_split(const LWGEOM *lwgeom_in, const LWGEOM *blade_in)
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