geometry_to_point()

Datum geometry_to_point

(

PG_FUNCTION_ARGS

)

Definition at line 72 of file geometry_inout.c.

{
        Point *point;
        POINT4D pt;
        GSERIALIZED *geom;
 
        if (PG_ARGISNULL(0))
                PG_RETURN_NULL();
        geom = PG_GETARG_GSERIALIZED_P(0);
 
        if (gserialized_get_type(geom) != POINTTYPE)
                elog(ERROR, "geometry_to_point only accepts Points");
 
        if (gserialized_peek_first_point(geom, &pt) == LW_FAILURE)
                PG_RETURN_NULL();
 
        point = (Point *)palloc(sizeof(Point));
        point->x = pt.x;
        point->y = pt.y;
 
        PG_RETURN_POINT_P(point);
}

References gserialized_get_type(), gserialized_peek_first_point(), LW_FAILURE, POINTTYPE, POINT4D::x, struct_point::x, POINT4D::y, and struct_point::y.

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