lwgeom_to_wkt()

char* lwgeom_to_wkt	(	const LWGEOM *	geom,
		uint8_t	variant,
		int	precision,
		size_t *	size_out
	)

WKT emitter function.

Parameters

geom	geometry to convert to WKT
variant	output format to use (WKT_ISO, WKT_SFSQL, WKT_EXTENDED)
precision	Double precision
size_out	(Out parameter) size of the buffer

Allocates a new *char and fills it with the WKT representation. If size_out is not NULL, it will be set to the size of the allocated *char.

Parameters

variant	Bitmasked value, accepts one of WKT_ISO, WKT_SFSQL, WKT_EXTENDED.
precision	Maximal number of digits after comma in the output doubles.
size_out	If supplied, will return the size of the returned string, including the null terminator.

Definition at line 708 of file lwout_wkt.c.

{
        stringbuffer_t *sb = lwgeom_to_wkt_internal(geom, variant, precision);
        if (!sb)
                return NULL;
        char *str = stringbuffer_getstringcopy(sb);
        if ( size_out )
                *size_out = stringbuffer_getlength(sb) + 1;
        stringbuffer_destroy(sb);
        return str;
}

References lwgeom_to_wkt_internal(), precision, str, stringbuffer_destroy(), stringbuffer_getlength(), stringbuffer_getstringcopy(), and variant.

Referenced by _lwt_AddLine(), _lwt_AddPoint(), _lwt_EdgeSplit(), _lwt_FaceByEdges(), _lwt_FindNextRingEdge(), cu_wkt(), cu_wkt_in(), do_encoded_polyline_test(), do_geojson_test(), do_lwgeom_swap_ordinates(), do_test_chaikin(), do_test_filterm(), GenerateLineStringGeometry(), GeneratePointGeometry(), GeneratePolygonGeometry(), lwgeom_to_ewkt(), lwgeom_to_text(), lwgeom_to_wkb_buffer(), lwgeom_to_wkb_varlena(), lwt_ChangeEdgeGeom(), lwt_GetFaceEdges(), rect_tree_to_wkt(), rt_raster_gdal_polygonize(), rt_raster_surface(), test_lwcurve_linearize(), test_lwgeom_locate_along(), test_misc_wkb(), test_unstroke(), and triangle_parse().

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