PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ lwline_offsetcurve()

static LWGEOM* lwline_offsetcurve ( const LWLINE lwline,
double  size,
int  quadsegs,
int  joinStyle,
double  mitreLimit 
)
static

Definition at line 1492 of file liblwgeom/lwgeom_geos.c.

1493 {
1494  LWGEOM* result;
1495  LWGEOM* geom = lwline_as_lwgeom(lwline);
1496  int32_t srid = RESULT_SRID(geom);
1497  uint8_t is3d = FLAGS_GET_Z(geom->flags);
1498  GEOSGeometry *g1, *g3;
1499 
1500  if (srid == SRID_INVALID) return NULL;
1501 
1502  initGEOS(lwnotice, lwgeom_geos_error);
1503 
1504  if (!(g1 = LWGEOM2GEOS(geom, AUTOFIX))) GEOS_FAIL();
1505 
1506  g3 = GEOSOffsetCurve(g1, size, quadsegs, joinStyle, mitreLimit);
1507 
1508  if (!g3)
1509  {
1510  GEOS_FREE(g1);
1511  return NULL;
1512  }
1513 
1514  GEOSSetSRID(g3, srid);
1515 
1516  if (!(result = GEOS2LWGEOM(g3, is3d)))
1517  GEOS_FREE_AND_FAIL(g1, g3);
1518 
1519  GEOS_FREE(g1, g3);
1520  return result;
1521 }
char result[OUT_DOUBLE_BUFFER_SIZE]
Definition: cu_print.c:267
#define GEOS_FREE(...)
#define AUTOFIX
#define RESULT_SRID(...)
#define GEOS_FAIL()
#define GEOS_FREE_AND_FAIL(...)
GEOSGeometry * LWGEOM2GEOS(const LWGEOM *lwgeom, uint8_t autofix)
LWGEOM * GEOS2LWGEOM(const GEOSGeometry *geom, uint8_t want3d)
void lwgeom_geos_error(const char *fmt,...)
LWGEOM * lwline_as_lwgeom(const LWLINE *obj)
Definition: lwgeom.c:322
#define SRID_INVALID
Definition: liblwgeom.h:233
#define FLAGS_GET_Z(flags)
Definition: liblwgeom.h:179
void lwnotice(const char *fmt,...)
Write a notice out to the notice handler.
Definition: lwutil.c:177
lwflags_t flags
Definition: liblwgeom.h:475

References AUTOFIX, LWGEOM::flags, FLAGS_GET_Z, GEOS2LWGEOM(), GEOS_FAIL, GEOS_FREE, GEOS_FREE_AND_FAIL, LWGEOM2GEOS(), lwgeom_geos_error(), lwline_as_lwgeom(), lwnotice(), result, RESULT_SRID, and SRID_INVALID.

Referenced by lwgeom_offsetcurve().

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