(self, x, y=None)
return (self._angleOffset + self._angleOrient*result) % self._fullcircle
Return the angle of the line from the turtle's position to (x, y).

        Arguments:
        x -- a number   or  a pair/vector of numbers   or   a turtle instance
        y -- a number       None                            None

        call: distance(x, y)         # two coordinates
        --or: distance((x, y))       # a pair (tuple) of coordinates
        --or: distance(vec)          # e.g. as returned by pos()
        --or: distance(mypen)        # where mypen is another turtle

        Return the angle, between the line from turtle-position to position
        specified by x, y and the turtle's start orientation. (Depends on
        modes - "standard" or "logo")

        Example (for a Turtle instance named turtle):
        >>> turtle.pos()
        (10.00, 10.00)
        >>> turtle.towards(0,0)
        225.0
Return the angle of the line from the turtle's position to (x, y).
Return the angle of the line from the turtle s position to ( x y ) .
def towards(self, x, y=None):
        """Return the angle of the line from the turtle's position to (x, y).

        Arguments:
        x -- a number   or  a pair/vector of numbers   or   a turtle instance
        y -- a number       None                            None

        call: distance(x, y)         # two coordinates
        --or: distance((x, y))       # a pair (tuple) of coordinates
        --or: distance(vec)          # e.g. as returned by pos()
        --or: distance(mypen)        # where mypen is another turtle

        Return the angle, between the line from turtle-position to position
        specified by x, y and the turtle's start orientation. (Depends on
        modes - "standard" or "logo")

        Example (for a Turtle instance named turtle):
        >>> turtle.pos()
        (10.00, 10.00)
        >>> turtle.towards(0,0)
        225.0
        """
        if y is not None:
            pos = Vec2D(x, y)
        if isinstance(x, Vec2D):
            pos = x
        elif isinstance(x, tuple):
            pos = Vec2D(*x)
        elif isinstance(x, TNavigator):
            pos = x._position
        x, y = pos - self._position
        result = round(math.degrees(math.atan2(y, x)), 10) % 360.0
        result /= self._degreesPerAU
        return (self._angleOffset + self._angleOrient*result) % self._fullcircle
def towards ( self , x , y = None ) : if y is not None : pos = Vec2D ( x , y ) if isinstance ( x , Vec2D ) : pos = x elif isinstance ( x , tuple ) : pos = Vec2D ( * x ) elif isinstance ( x , TNavigator ) : pos = x . _position x , y = pos - self . _position result = round ( math . degrees ( math . atan2 ( y , x ) ) , 10 ) % 360.0 result /= self . _degreesPerAU return ( self . _angleOffset + self . _angleOrient * result ) % self . _fullcircle