LWGEOM_asSVG()

Datum LWGEOM_asSVG

(

PG_FUNCTION_ARGS

)

Definition at line 521 of file lwgeom_export.c.

{
        GSERIALIZED *geom;
        LWGEOM *lwgeom;
        char *svg;
        text *result;
        int relative = 0;
        int precision=DBL_DIG;
 
        if ( PG_ARGISNULL(0) ) PG_RETURN_NULL();
 
        geom = PG_GETARG_GSERIALIZED_P(0);
 
        /* check for relative path notation */
        if ( PG_NARGS() > 1 && ! PG_ARGISNULL(1) )
                relative = PG_GETARG_INT32(1) ? 1:0;
 
        if ( PG_NARGS() > 2 && ! PG_ARGISNULL(2) )
        {
                precision = PG_GETARG_INT32(2);
                /* TODO: leave this to liblwgeom ? */
                if ( precision > DBL_DIG )
                        precision = DBL_DIG;
                else if ( precision < 0 ) precision = 0;
        }
 
        lwgeom = lwgeom_from_gserialized(geom);
        svg = lwgeom_to_svg(lwgeom, precision, relative);
        result = cstring_to_text(svg);
        lwgeom_free(lwgeom);
        pfree(svg);
        PG_FREE_IF_COPY(geom, 0);
 
        PG_RETURN_TEXT_P(result);
}

References lwgeom_free(), lwgeom_from_gserialized(), lwgeom_to_svg(), and precision.

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