lwgeom_perimeter()

double lwgeom_perimeter ( const LWGEOM *  geom )

extern

Definition at line 1994 of file lwgeom.c.

{
        int type = geom->type;
        if ( type == POLYGONTYPE )
                return lwpoly_perimeter((LWPOLY*)geom);
        else if ( type == CURVEPOLYTYPE )
                return lwcurvepoly_perimeter((LWCURVEPOLY*)geom);
        else if ( type == TRIANGLETYPE )
                return lwtriangle_perimeter((LWTRIANGLE*)geom);
        else if ( lwgeom_is_collection(geom) )
        {
                double perimeter = 0.0;
                uint32_t i;
                LWCOLLECTION *col = (LWCOLLECTION*)geom;
                for ( i = 0; i < col->ngeoms; i++ )
                        perimeter += lwgeom_perimeter(col->geoms[i]);
                return perimeter;
        }
        else
                return 0.0;
}

References CURVEPOLYTYPE, LWCOLLECTION::geoms, lwcurvepoly_perimeter(), lwgeom_is_collection(), lwgeom_perimeter(), lwpoly_perimeter(), lwtriangle_perimeter(), LWCOLLECTION::ngeoms, POLYGONTYPE, TRIANGLETYPE, and LWGEOM::type.

Referenced by lwgeom_perimeter(), LWGEOM_perimeter_poly(), and test_raster_surface().

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