get Left Right Direction Segments
This represent the original iOS LEFT_RIGHT direction type which they described like this:
Left and Right get a 120 degree window, while Ahead and Behind get 60 degree windows in their respective directions (e.g. right is 30 degrees to 150 degrees and behind is 150 degrees to 210 degrees). These windows do not overlap, so relative directions can only be "ahead", "to the right", "behind", or "to the left". This style of relative direction is bias towards calling out things as either left or right unless they are directly ahead or behind.
Return
an array of Segments describing the angles
Parameters
heading
Direction the device is pointing in degrees