ST_MakeEnvelope()

Datum ST_MakeEnvelope

(

PG_FUNCTION_ARGS

)

Definition at line 2008 of file lwgeom_functions_basic.c.

{
        LWPOLY *poly;
        GSERIALIZED *result;
        double x1, y1, x2, y2;
        int32_t srid = SRID_UNKNOWN;
 
        POSTGIS_DEBUG(2, "ST_MakeEnvelope called");
 
        x1 = PG_GETARG_FLOAT8(0);
        y1 = PG_GETARG_FLOAT8(1);
        x2 = PG_GETARG_FLOAT8(2);
        y2 = PG_GETARG_FLOAT8(3);
        if (PG_NARGS() > 4)
        {
                srid = PG_GETARG_INT32(4);
        }
 
        poly = lwpoly_construct_envelope(srid, x1, y1, x2, y2);
 
        result = geometry_serialize(lwpoly_as_lwgeom(poly));
        lwpoly_free(poly);
 
        PG_RETURN_POINTER(result);
}

References lwpoly_as_lwgeom(), lwpoly_construct_envelope(), lwpoly_free(), result, and SRID_UNKNOWN.

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