Update comment

Author: KangarooKoala

commands2/button/commandjoystick.py

@@ -207,8 +207,13 @@ def getDirectionRadians(self) -> float:
         :returns: The direction of the vector in radians
         """
         # https://docs.wpilib.org/en/stable/docs/software/basic-programming/coordinate-system.html#joystick-and-controller-coordinate-system
-        # +X is right and +Y is back, so 0 radians is right and CW is positive. Rotate by 90 degrees
-        # CCW to make 0 radians forward and CW positive.
+        # A positive rotation around the X axis moves the joystick right, and a
+        # positive rotation around the Y axis moves the joystick backward. When
+        # treating them as translations, 0 radians is measured from the right
+        # direction, and angle increases clockwise.
+        #
+        # It's rotated 90 degrees CCW (y is negated and the arguments are reversed)
+        # so that 0 radians is forward.
         return self._hid.getDirectionRadians()
 
     def getDirectionDegrees(self) -> float: