lwgeom_to_geojson()

char* lwgeom_to_geojson	(	const LWGEOM *	geom,
		char *	srs,
		int	precision,
		int	has_bbox
	)

Takes a GEOMETRY and returns a GeoJson representation.

Definition at line 48 of file lwout_geojson.c.

{
        int type = geom->type;
        GBOX *bbox = NULL;
        GBOX tmp;
 
        if ( precision > OUT_MAX_DOUBLE_PRECISION ) precision = OUT_MAX_DOUBLE_PRECISION;
 
        if (has_bbox)
        {
                /* Whether these are geography or geometry,
                   the GeoJSON expects a cartesian bounding box */
                lwgeom_calculate_gbox_cartesian(geom, &tmp);
                bbox = &tmp;
        }
 
        switch (type)
        {
        case POINTTYPE:
                return asgeojson_point((LWPOINT*)geom, srs, bbox, precision);
        case LINETYPE:
                return asgeojson_line((LWLINE*)geom, srs, bbox, precision);
        case POLYGONTYPE:
                return asgeojson_poly((LWPOLY*)geom, srs, bbox, precision);
        case MULTIPOINTTYPE:
                return asgeojson_multipoint((LWMPOINT*)geom, srs, bbox, precision);
        case MULTILINETYPE:
                return asgeojson_multiline((LWMLINE*)geom, srs, bbox, precision);
        case MULTIPOLYGONTYPE:
                return asgeojson_multipolygon((LWMPOLY*)geom, srs, bbox, precision);
        case COLLECTIONTYPE:
                return asgeojson_collection((LWCOLLECTION*)geom, srs, bbox, precision);
        default:
                lwerror("lwgeom_to_geojson: '%s' geometry type not supported",
                        lwtype_name(type));
        }
 
        /* Never get here */
        return NULL;
}

References asgeojson_collection(), asgeojson_line(), asgeojson_multiline(), asgeojson_multipoint(), asgeojson_multipolygon(), asgeojson_point(), asgeojson_poly(), COLLECTIONTYPE, LINETYPE, lwerror(), lwgeom_calculate_gbox_cartesian(), lwtype_name(), MULTILINETYPE, MULTIPOINTTYPE, MULTIPOLYGONTYPE, OUT_MAX_DOUBLE_PRECISION, POINTTYPE, POLYGONTYPE, precision, LWGEOM::type, and ovdump::type.

Referenced by do_geojson_test(), do_geojson_unsupported(), geography_as_geojson(), and LWGEOM_asGeoJson().

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