LogoPy Compatibility Commands

LogoPy has some commands that are valid in all backends, but unlikely to be available in other Logo implementations. They are different from extension commands because they provide features that are necessary for writing portable Logo programs.


Even in Logo implementations that do not provide these commands as primitives, it is not hard to provide implementations of these commands in the Logo language, itself.



The CARTESIAN.HEADING command takes a heading for the current LogoPy backend and maps it to a heading in the standard Cartesian coordinate system (North = 90 degrees, South = 270 degrees, East = 0 degrees, West = 180 degrees).


to TURTLE.HEADING :heading

The TURTLE.HEADING command takes a Cartesian heading and outputs the corresponding heading in the current LogoPy backend.