PostGIS  2.3.7dev-r@@SVN_REVISION@@
double lwgeom_length ( const LWGEOM geom)

Definition at line 1659 of file lwgeom.c.

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

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

1660 {
1661  int type = geom->type;
1662  if ( type == LINETYPE )
1663  return lwline_length((LWLINE*)geom);
1664  else if ( type == CIRCSTRINGTYPE )
1665  return lwcircstring_length((LWCIRCSTRING*)geom);
1666  else if ( type == COMPOUNDTYPE )
1667  return lwcompound_length((LWCOMPOUND*)geom);
1668  else if ( lwgeom_is_collection(geom) )
1669  {
1670  double length = 0.0;
1671  int i;
1672  LWCOLLECTION *col = (LWCOLLECTION*)geom;
1673  for ( i = 0; i < col->ngeoms; i++ )
1674  length += lwgeom_length(col->geoms[i]);
1675  return length;
1676  }
1677  else
1678  return 0.0;
1679 }
#define LINETYPE
Definition: liblwgeom.h:85
double lwcircstring_length(const LWCIRCSTRING *circ)
Definition: lwcircstring.c:283
double lwgeom_length(const LWGEOM *geom)
Definition: lwgeom.c:1659
#define COMPOUNDTYPE
Definition: liblwgeom.h:92
LWGEOM ** geoms
Definition: liblwgeom.h:508
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:1004
double lwline_length(const LWLINE *line)
Definition: lwline.c:579
uint8_t type
Definition: liblwgeom.h:395
#define CIRCSTRINGTYPE
Definition: liblwgeom.h:91

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