path_to_geometry()

Datum path_to_geometry

(

PG_FUNCTION_ARGS

)

Definition at line 156 of file geometry_inout.c.

{
        PATH *path;
        LWLINE *lwline;
        POINTARRAY *pa;
        GSERIALIZED *geom;
        POINT4D pt;
        Point p;
        int i;
 
        POSTGIS_DEBUG(2, "path_to_geometry called");
 
        if ( PG_ARGISNULL(0) )
                PG_RETURN_NULL();
 
        path = PG_GETARG_PATH_P(0);
 
        if ( ! path )
                PG_RETURN_NULL();
 
        pa = ptarray_construct_empty(0, 0, path->npts);
        for ( i = 0; i < path->npts; i++ )
        {
                p = path->p[i];
                pt.x = p.x;
                pt.y = p.y;
                ptarray_append_point(pa, &pt, LW_FALSE);
        }
        lwline = lwline_construct(SRID_UNKNOWN, NULL, pa);
        geom = geometry_serialize(lwline_as_lwgeom(lwline));
        lwline_free(lwline);
 
        PG_RETURN_POINTER(geom);
}

References geometry_serialize(), LW_FALSE, lwline_as_lwgeom(), lwline_construct(), lwline_free(), ptarray_append_point(), ptarray_construct_empty(), SRID_UNKNOWN, POINT4D::x, struct_point::x, POINT4D::y, and struct_point::y.

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