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Find closest pair, using naive algorithm. local closest_a, closest_b local min_dist for i, p in ipairs(P) do for j, q in ipairs(P) do if i ~= j then local dist = math.sqrt((p.x - q.x)^2 + (p.y - q.y)^2) if not min_dist or dist < min_dist then min_dist = dist closest_a, closest_b = i, j end end end end if min_dist < RADIUS then error("points on top of each other, run me again") end io.write('<?xml version="1.0" encoding="UTF-8" standalone="no"?>\n', '<svg svg="http://www.w3.org/2000/svg" version="1.0"', ' width="', WD, '" height="', HT, '">\n') for i, p in ipairs(P) do local color = COLOR.normal if i == closest_a or i == closest_b then color = COLOR.closest end io.write(' <circle cx="', RADIUS + p.x, '" cy="', RADIUS + p.y, '" r="', RADIUS, '", color, '"/>\n') end io.write('</svg>\n')
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local WD, HT, NUM_POINTS = 256, 256, 16 local COLOR = { normal = '#000', closest = '#f00' } local RADIUS = 5 math.randomseed(os.time()) local P = {} for _ = 1, NUM_POINTS do P = { x = RADIUS + (WD - 2*RADIUS) * math.random(), y = RADIUS + (HT - 2*RADIUS) * math.random() } end --
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by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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The SVG was generated by running the Lua program given below. It deliberately fails if the closest points would be overlapping in the image, because that would be confusing.
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The person who associated a work with this deed has dedicated the work to the
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copyrighted, dedicated to the public domain by copyright holder
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http://creativecommons.org/publicdomain/zero/1.0/deed.en
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Add a one-line explanation of what this file represents
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Commons is a freely licensed media file repository.
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941:Найближча пара точок
886:Principe des tiroirs
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600:determination method
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736:File history
484:22 June 2009
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