PostGIS  2.5.1dev-r@@SVN_REVISION@@

◆ lwgeom_length_2d()

double lwgeom_length_2d ( const LWGEOM geom)

Definition at line 1946 of file lwgeom.c.

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

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

1947 {
1948  int type = geom->type;
1949  if ( type == LINETYPE )
1950  return lwline_length_2d((LWLINE*)geom);
1951  else if ( type == CIRCSTRINGTYPE )
1952  return lwcircstring_length_2d((LWCIRCSTRING*)geom);
1953  else if ( type == COMPOUNDTYPE )
1954  return lwcompound_length_2d((LWCOMPOUND*)geom);
1955  else if ( lwgeom_is_collection(geom) )
1956  {
1957  double length = 0.0;
1958  uint32_t i;
1959  LWCOLLECTION *col = (LWCOLLECTION*)geom;
1960  for ( i = 0; i < col->ngeoms; i++ )
1961  length += lwgeom_length_2d(col->geoms[i]);
1962  return length;
1963  }
1964  else
1965  return 0.0;
1966 }
#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:509
unsigned int uint32_t
Definition: uthash.h:78
double lwcompound_length_2d(const LWCOMPOUND *comp)
Definition: lwcompound.c:74
LWGEOM ** geoms
Definition: liblwgeom.h:511
double lwgeom_length_2d(const LWGEOM *geom)
Definition: lwgeom.c:1946
int lwgeom_is_collection(const LWGEOM *geom)
Determine whether a LWGEOM can contain sub-geometries or not.
Definition: lwgeom.c:1085
uint8_t type
Definition: liblwgeom.h:398
type
Definition: ovdump.py:41
#define CIRCSTRINGTYPE
Definition: liblwgeom.h:91
Here is the call graph for this function:
Here is the caller graph for this function: