PostGIS  2.5.0dev-r@@SVN_REVISION@@
Datum LWGEOM_mindistance3d ( PG_FUNCTION_ARGS  )

Definition at line 916 of file lwgeom_functions_basic.c.

References error_if_srid_mismatch(), lwgeom_from_gserialized(), lwgeom_mindistance3d(), and LWGEOM::srid.

917 {
918  double mindist;
919  GSERIALIZED *geom1 = PG_GETARG_GSERIALIZED_P(0);
920  GSERIALIZED *geom2 = PG_GETARG_GSERIALIZED_P(1);
921  LWGEOM *lwgeom1 = lwgeom_from_gserialized(geom1);
922  LWGEOM *lwgeom2 = lwgeom_from_gserialized(geom2);
923 
924  error_if_srid_mismatch(lwgeom1->srid, lwgeom2->srid);
925 
926  mindist = lwgeom_mindistance3d(lwgeom1, lwgeom2);
927 
928  PG_FREE_IF_COPY(geom1, 0);
929  PG_FREE_IF_COPY(geom2, 1);
930 
931  /*if called with empty geometries the ingoing mindistance is untouched, and makes us return NULL*/
932  if (mindist<FLT_MAX)
933  PG_RETURN_FLOAT8(mindist);
934 
935  PG_RETURN_NULL();
936 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
double lwgeom_mindistance3d(const LWGEOM *lw1, const LWGEOM *lw2)
Function initializing 3d min distance calculation.
Definition: measures3d.c:352
void error_if_srid_mismatch(int srid1, int srid2)
Definition: lwutil.c:338
int32_t srid
Definition: liblwgeom.h:398

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