PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ lwpoly_is_closed()

int lwpoly_is_closed ( const LWPOLY poly)

Definition at line 549 of file lwpoly.c.

References LWPOLY::flags, FLAGS_GET_Z, LW_FALSE, LW_TRUE, LWPOLY::nrings, ptarray_is_closed_2d(), ptarray_is_closed_3d(), and LWPOLY::rings.

Referenced by lwgeom_is_closed().

550 {
551  int i = 0;
552 
553  if ( poly->nrings == 0 )
554  return LW_TRUE;
555 
556  for ( i = 0; i < poly->nrings; i++ )
557  {
558  if (FLAGS_GET_Z(poly->flags))
559  {
560  if ( ! ptarray_is_closed_3d(poly->rings[i]) )
561  return LW_FALSE;
562  }
563  else
564  {
565  if ( ! ptarray_is_closed_2d(poly->rings[i]) )
566  return LW_FALSE;
567  }
568  }
569 
570  return LW_TRUE;
571 }
int ptarray_is_closed_3d(const POINTARRAY *pa)
Definition: ptarray.c:714
int ptarray_is_closed_2d(const POINTARRAY *pa)
Definition: ptarray.c:701
#define LW_FALSE
Definition: liblwgeom.h:76
#define LW_TRUE
Return types for functions with status returns.
Definition: liblwgeom.h:75
POINTARRAY ** rings
Definition: liblwgeom.h:456
int nrings
Definition: liblwgeom.h:454
#define FLAGS_GET_Z(flags)
Macros for manipulating the &#39;flags&#39; byte.
Definition: liblwgeom.h:139
uint8_t flags
Definition: liblwgeom.h:451
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