PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ LWGEOM_makeline()

Datum LWGEOM_makeline ( PG_FUNCTION_ARGS  )

Definition at line 1486 of file lwgeom_functions_basic.c.

1487 {
1488  GSERIALIZED *pglwg1, *pglwg2;
1489  GSERIALIZED *result = NULL;
1490  LWGEOM *lwgeoms[2];
1491  LWLINE *outline;
1492 
1493  POSTGIS_DEBUG(2, "LWGEOM_makeline called.");
1494 
1495  /* Get input datum */
1496  pglwg1 = PG_GETARG_GSERIALIZED_P(0);
1497  pglwg2 = PG_GETARG_GSERIALIZED_P(1);
1498 
1499  if ((gserialized_get_type(pglwg1) != POINTTYPE && gserialized_get_type(pglwg1) != LINETYPE) ||
1500  (gserialized_get_type(pglwg2) != POINTTYPE && gserialized_get_type(pglwg2) != LINETYPE))
1501  {
1502  elog(ERROR, "Input geometries must be points or lines");
1503  PG_RETURN_NULL();
1504  }
1505 
1506  gserialized_error_if_srid_mismatch(pglwg1, pglwg2, __func__);
1507 
1508  lwgeoms[0] = lwgeom_from_gserialized(pglwg1);
1509  lwgeoms[1] = lwgeom_from_gserialized(pglwg2);
1510 
1511  outline = lwline_from_lwgeom_array(lwgeoms[0]->srid, 2, lwgeoms);
1512 
1513  result = geometry_serialize((LWGEOM *)outline);
1514 
1515  PG_FREE_IF_COPY(pglwg1, 0);
1516  PG_FREE_IF_COPY(pglwg2, 1);
1517  lwgeom_free(lwgeoms[0]);
1518  lwgeom_free(lwgeoms[1]);
1519 
1520  PG_RETURN_POINTER(result);
1521 }
char result[OUT_DOUBLE_BUFFER_SIZE]
Definition: cu_print.c:267
void gserialized_error_if_srid_mismatch(const GSERIALIZED *g1, const GSERIALIZED *g2, const char *funcname)
Definition: gserialized.c:404
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
Definition: gserialized.c:239
uint32_t gserialized_get_type(const GSERIALIZED *g)
Extract the geometry type from the serialized form (it hides in the anonymous data area,...
Definition: gserialized.c:89
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1138
#define LINETYPE
Definition: liblwgeom.h:117
#define POINTTYPE
LWTYPE numbers, used internally by PostGIS.
Definition: liblwgeom.h:116
LWLINE * lwline_from_lwgeom_array(int32_t srid, uint32_t ngeoms, LWGEOM **geoms)
Definition: lwline.c:151

References gserialized_error_if_srid_mismatch(), gserialized_get_type(), LINETYPE, lwgeom_free(), lwgeom_from_gserialized(), lwline_from_lwgeom_array(), genraster::outline, POINTTYPE, and result.

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