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28 lines
666 B
Python
28 lines
666 B
Python
import pickle
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def load_poly(filename: str):
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try:
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with open(filename, "rb") as f:
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return pickle.load(f)
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except:
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return None
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def ray_tracing(x, y, poly):
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n = len(poly)
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inside = False
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xints = 0.0
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p1x, p1y = poly[0]
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for i in range(n+1):
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p2x, p2y = poly[i % n]
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if y > min(p1y, p2y):
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if y <= max(p1y, p2y):
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if x <= max(p1x, p2x):
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if p1y != p2y:
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xints = (y-p1y)*(p2x-p1x)/(p2y-p1y)+p1x
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if p1x == p2x or x <= xints:
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inside = not inside
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p1x, p1y = p2x, p2y
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return inside
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