PostGIS  2.5.1dev-r@@SVN_REVISION@@

◆ lwgeom_length()

double lwgeom_length ( const LWGEOM geom)

Definition at line 1924 of file lwgeom.c.

References CIRCSTRINGTYPE, COMPOUNDTYPE, LWCOLLECTION::geoms, LINETYPE, lwcircstring_length(), lwcompound_length(), lwgeom_is_collection(), lwline_length(), LWCOLLECTION::ngeoms, ovdump::type, and LWGEOM::type.

Referenced by gserialized_distance_nd(), lwcurvepoly_perimeter(), and LWGEOM_length_linestring().

1925 {
1926  int type = geom->type;
1927  if ( type == LINETYPE )
1928  return lwline_length((LWLINE*)geom);
1929  else if ( type == CIRCSTRINGTYPE )
1930  return lwcircstring_length((LWCIRCSTRING*)geom);
1931  else if ( type == COMPOUNDTYPE )
1932  return lwcompound_length((LWCOMPOUND*)geom);
1933  else if ( lwgeom_is_collection(geom) )
1934  {
1935  double length = 0.0;
1936  uint32_t i;
1937  LWCOLLECTION *col = (LWCOLLECTION*)geom;
1938  for ( i = 0; i < col->ngeoms; i++ )
1939  length += lwgeom_length(col->geoms[i]);
1940  return length;
1941  }
1942  else
1943  return 0.0;
1944 }
#define LINETYPE
Definition: liblwgeom.h:85
double lwcircstring_length(const LWCIRCSTRING *circ)
Definition: lwcircstring.c:276
double lwgeom_length(const LWGEOM *geom)
Definition: lwgeom.c:1924
#define COMPOUNDTYPE
Definition: liblwgeom.h:92
uint32_t ngeoms
Definition: liblwgeom.h:509
unsigned int uint32_t
Definition: uthash.h:78
LWGEOM ** geoms
Definition: liblwgeom.h:511
double lwcompound_length(const LWCOMPOUND *comp)
Definition: lwcompound.c:69
int lwgeom_is_collection(const LWGEOM *geom)
Determine whether a LWGEOM can contain sub-geometries or not.
Definition: lwgeom.c:1085
double lwline_length(const LWLINE *line)
Definition: lwline.c:527
uint8_t type
Definition: liblwgeom.h:398
type
Definition: ovdump.py:41
#define CIRCSTRINGTYPE
Definition: liblwgeom.h:91
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