PostGIS  2.4.9dev-r@@SVN_REVISION@@

◆ lwgeom_perimeter_2d()

double lwgeom_perimeter_2d ( const LWGEOM geom)

Definition at line 1668 of file lwgeom.c.

References CURVEPOLYTYPE, LWCOLLECTION::geoms, lwcurvepoly_perimeter_2d(), lwgeom_is_collection(), lwpoly_perimeter_2d(), lwtriangle_perimeter_2d(), LWCOLLECTION::ngeoms, POLYGONTYPE, TRIANGLETYPE, ovdump::type, and LWGEOM::type.

Referenced by LWGEOM_perimeter2d_poly().

1669 {
1670  int type = geom->type;
1671  if ( type == POLYGONTYPE )
1672  return lwpoly_perimeter_2d((LWPOLY*)geom);
1673  else if ( type == CURVEPOLYTYPE )
1674  return lwcurvepoly_perimeter_2d((LWCURVEPOLY*)geom);
1675  else if ( type == TRIANGLETYPE )
1676  return lwtriangle_perimeter_2d((LWTRIANGLE*)geom);
1677  else if ( lwgeom_is_collection(geom) )
1678  {
1679  double perimeter = 0.0;
1680  int i;
1681  LWCOLLECTION *col = (LWCOLLECTION*)geom;
1682  for ( i = 0; i < col->ngeoms; i++ )
1683  perimeter += lwgeom_perimeter_2d(col->geoms[i]);
1684  return perimeter;
1685  }
1686  else
1687  return 0.0;
1688 }
#define POLYGONTYPE
Definition: liblwgeom.h:87
#define CURVEPOLYTYPE
Definition: liblwgeom.h:94
double lwtriangle_perimeter_2d(const LWTRIANGLE *triangle)
Definition: lwtriangle.c:224
#define TRIANGLETYPE
Definition: liblwgeom.h:98
double lwgeom_perimeter_2d(const LWGEOM *geom)
Definition: lwgeom.c:1668
LWGEOM ** geoms
Definition: liblwgeom.h:509
double lwcurvepoly_perimeter_2d(const LWCURVEPOLY *poly)
Definition: lwcurvepoly.c:160
double lwpoly_perimeter_2d(const LWPOLY *poly)
Compute the sum of polygon rings length (forcing 2d computation).
Definition: lwpoly.c:575
int lwgeom_is_collection(const LWGEOM *geom)
Determine whether a LWGEOM can contain sub-geometries or not.
Definition: lwgeom.c:1040
uint8_t type
Definition: liblwgeom.h:396
type
Definition: ovdump.py:41
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