53 lines
817 B
Python
53 lines
817 B
Python
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import random
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from collections import namedtuple
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Point = namedtuple('Point', ['x', 'y'])
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def sidedness(p1, p2, p3):
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eps = 0.00000001
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y = p1.y*(p3.x - p2.x)
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x = p1.x
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a = (p3.y - p2.y)
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b = p3.y*(p3.x - p2.x) - a*p3.x
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if y - eps < a*x + b < y + eps:
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return "ON"
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elif y > a*x + b:
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return "ABOVE"
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else:
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return "BELOW"
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# test
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p1 = Point(4,4)
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p2 = Point(0,0)
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p3 = Point(5,2)
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#print(sidedness(p1, p2, p3))
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def genPoint():
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a = random.uniform(1, 10)
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b = random.uniform(1, 10)
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p = []
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for i in range(3):
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x_i = random.uniform(1, 10)
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p_i = Point(x_i, a*x_i + b)
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p.append(p_i)
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return p
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hej = genPoint()
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print(hej)
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print(sidedness(*hej))
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def graham_scan():
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3
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