PostGIS  3.7.0dev-r@@SVN_REVISION@@

◆ lwgeom_length()

double lwgeom_length ( const LWGEOM geom)

Definition at line 2066 of file lwgeom.c.

2067 {
2068  int type = geom->type;
2069  if ( type == LINETYPE )
2070  return lwline_length((LWLINE*)geom);
2071  else if ( type == CIRCSTRINGTYPE )
2072  return lwcircstring_length((LWCIRCSTRING*)geom);
2073  else if ( type == COMPOUNDTYPE )
2074  return lwcompound_length((LWCOMPOUND*)geom);
2075  else if ( lwgeom_is_collection(geom) )
2076  {
2077  double length = 0.0;
2078  uint32_t i;
2079  LWCOLLECTION *col = (LWCOLLECTION*)geom;
2080  for ( i = 0; i < col->ngeoms; i++ )
2081  length += lwgeom_length(col->geoms[i]);
2082  return length;
2083  }
2084  else
2085  return 0.0;
2086 }
#define COMPOUNDTYPE
Definition: liblwgeom.h:110
#define LINETYPE
Definition: liblwgeom.h:103
#define CIRCSTRINGTYPE
Definition: liblwgeom.h:109
double lwcompound_length(const LWCOMPOUND *comp)
Definition: lwcompound.c:112
double lwline_length(const LWLINE *line)
Definition: lwline.c:523
double lwcircstring_length(const LWCIRCSTRING *circ)
Definition: lwcircstring.c:269
int lwgeom_is_collection(const LWGEOM *geom)
Determine whether a LWGEOM contains sub-geometries or not This basically just checks that the struct ...
Definition: lwgeom.c:1125
double lwgeom_length(const LWGEOM *geom)
Definition: lwgeom.c:2066
type
Definition: ovdump.py:42
uint32_t ngeoms
Definition: liblwgeom.h:580
LWGEOM ** geoms
Definition: liblwgeom.h:575
uint8_t type
Definition: liblwgeom.h:462

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

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

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