29 lines
515 B
Python
29 lines
515 B
Python
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import math
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ZERO = (0, 0)
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def dot(x1, y1, x2, y2):
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return (x1 * x2) + (y1 * y2)
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def length(x, y):
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return math.sqrt((x * x) + (y * y))
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def normalize(x, y):
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_len = length(x, y)
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return x / _len, y / _len
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def scale(x, y, factor):
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return x * factor, y * factor
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def add(x1, y1, x2, y2):
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return x1 + x2, y1 + y2
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def sub(x1, y1, x2, y2):
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return x1 - x2, y1 - y2
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def vmin(x1, y1, x2, y2):
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return min(x1, x2), min(y1, y2)
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def vmax(x1, y1, x2, y2):
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return max(x1, x2), max(y1, y2)
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