root/lib/angles.py @ 8807
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# Angles
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rev_deg = 360 |
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compass_dir_headings = {'N': 0, 'E': 90, 'S': 180, 'W': 270} |
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def compass2heading(compass): |
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heading = None |
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for dir_ in reversed(compass): |
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dir_heading = compass_dir_headings[dir_] |
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if heading == None: heading = dir_heading |
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else: |
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sum_ = dir_heading + heading |
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if abs(dir_heading - heading) > rev_deg/2: sum_ += rev_deg |
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heading = sum_/2. % rev_deg |
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return heading |