Description Usage Arguments Value See Also Examples
A helper function used by 'short_turn' and 'long_turn' to determine the angular difference in degrees between two directions.
| 1 | calc_direction_change(oldDir, newDir)
 | 
| oldDir | a number between 0 and 360 | 
| newDir | a number between 0 and 360 | 
The difference between two angles. A numeric value between -180 and 180.
short_turn, long_turn
| 1 2 3 4 | calc_direction_change(20, 180) # => 160
calc_direction_change(350, 1)  # => 11
calc_direction_change(180, 0)  # => -180
calc_direction_change(180, 50) # => -130
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