PostGIS  2.5.0dev-r@@SVN_REVISION@@
double lwgeom_length_2d ( const LWGEOM geom)

Definition at line 1939 of file lwgeom.c.

References CIRCSTRINGTYPE, COMPOUNDTYPE, LWCOLLECTION::geoms, LINETYPE, lwcircstring_length_2d(), lwcompound_length_2d(), lwgeom_is_collection(), lwline_length_2d(), LWCOLLECTION::ngeoms, and LWGEOM::type.

Referenced by gserialized_distance_nd(), lwcompound_length_2d(), lwcurvepoly_perimeter_2d(), and LWGEOM_length2d_linestring().

1940 {
1941  int type = geom->type;
1942  if ( type == LINETYPE )
1943  return lwline_length_2d((LWLINE*)geom);
1944  else if ( type == CIRCSTRINGTYPE )
1945  return lwcircstring_length_2d((LWCIRCSTRING*)geom);
1946  else if ( type == COMPOUNDTYPE )
1947  return lwcompound_length_2d((LWCOMPOUND*)geom);
1948  else if ( lwgeom_is_collection(geom) )
1949  {
1950  double length = 0.0;
1951  uint32_t i;
1952  LWCOLLECTION *col = (LWCOLLECTION*)geom;
1953  for ( i = 0; i < col->ngeoms; i++ )
1954  length += lwgeom_length_2d(col->geoms[i]);
1955  return length;
1956  }
1957  else
1958  return 0.0;
1959 }
#define LINETYPE
Definition: liblwgeom.h:85
#define COMPOUNDTYPE
Definition: liblwgeom.h:92
double lwcircstring_length_2d(const LWCIRCSTRING *circ)
Definition: lwcircstring.c:281
double lwline_length_2d(const LWLINE *line)
Definition: lwline.c:534
uint32_t ngeoms
Definition: liblwgeom.h:506
unsigned int uint32_t
Definition: uthash.h:78
double lwcompound_length_2d(const LWCOMPOUND *comp)
Definition: lwcompound.c:74
LWGEOM ** geoms
Definition: liblwgeom.h:508
double lwgeom_length_2d(const LWGEOM *geom)
Definition: lwgeom.c:1939
int lwgeom_is_collection(const LWGEOM *geom)
Determine whether a LWGEOM can contain sub-geometries or not.
Definition: lwgeom.c:1078
uint8_t type
Definition: liblwgeom.h:395
#define CIRCSTRINGTYPE
Definition: liblwgeom.h:91

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