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def intersection_line(x1, y1, r1, x2, y2 r2): | |
"""Calculates intersection line for two circles defined by (x1, y1, r1) and (x2, y2, r2).""" | |
# Formulas obtained from | |
# http://www.wolframalpha.com/input/?i=solve+x^2+%2B+y^2+%3D+pow(r,2)+ | |
# and+%28x-a%29^2+%2B+%28y-b%29^2+%3D+pow(q,2)+for+x%2Cy | |
# Create transformed coordinates for calculations | |
a = x2 - x1 | |
b = y2 - y1 | |
(r,q) = (r1, r2) |
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