Created
May 24, 2013 05:51
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Clock angle
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import unittest | |
from math import pi, degrees | |
def get_hour_angle(hour, minute=0): | |
angle = (hour / 6.) * pi | |
minute_angle = get_minute_angle(minute) / 12 | |
return angle + minute_angle | |
def get_minute_angle(minute): | |
angle = (minute / 30.) * pi | |
return angle | |
def clock_angle(minute): | |
hour, minute = (minute / 60, minute % 60) | |
angle = abs(get_hour_angle(hour, minute) - get_minute_angle(minute)) | |
if angle > pi: | |
angle = 2 * pi - angle | |
return angle | |
class ClockAngleTest(unittest.TestCase): | |
def test_get_hour_angle(self): | |
self.assertEqual(get_hour_angle(0), 0) | |
self.assertEqual(get_hour_angle(3), pi/2) | |
self.assertEqual(get_hour_angle(6), pi) | |
self.assertEqual(get_hour_angle(12), 2 * pi) | |
self.assertEqual(get_hour_angle(18), pi) | |
def test_get_minute_angle(self): | |
self.assertEqual(get_minute_angle(0), 0) | |
self.assertEqual(get_minute_angle(30), pi) | |
def test_get_clock_angle(self): | |
self.assertEqual(clock_angle(0), 0) | |
self.assertEqual(clock_angle(360), pi) | |
self.assertEqual(clock_angle(180), pi/2) | |
self.assertEqual(clock_angle(210), pi - (pi/2) - (pi/12)) | |
self.assertEqual(round(degrees(clock_angle(140))), 50) | |
if __name__ == '__main__': | |
unittest.main() |
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