Created
March 26, 2018 20:29
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Points in a rectangle -- Python Function
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def in_boxes(boxes, points): | |
# (N, 4, 2) = boxes.shape | |
# (M, 2) = points.shape | |
w = np.zeros(points.shape[0]) | |
start = time.time() | |
for (i, point) in enumerate(points): | |
in_box = False | |
for box in boxes: | |
(A, B, C, D) = box | |
AP = (point - A) | |
AB = (B - A) | |
AD = (D - A) | |
cond0 = 0 < np.dot(AP, AB) < np.dot(AB, AB) | |
cond1 = 0 < np.dot(AP, AD) < np.dot(AD, AD) | |
in_box = in_box or (cond0 and cond1) | |
if in_box: | |
w[i] = 1 | |
else: | |
w[i] = 0 | |
end = time.time() | |
print("Total time %.4fs" %(end-start)) | |
tot =np.sum(w) | |
print(tot) | |
return w |
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