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42 lines
1009 B
42 lines
1009 B
8 years ago
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local function mandel()
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local w = 76
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local h = 28
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local iter = 100000
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local i, j, k, c
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local x0, y0, xx, yy, xx2, yy2
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local line
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for i=0,h-1 do
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y0 = (i / h) * 2.5 - 1.25
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line = {}
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for j=0,w-1 do
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x0 = (j / w) * 3.0 - 2.0
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xx = 0
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yy = 0
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c = '#'
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for k=0,iter-1 do
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xx2 = xx*xx; yy2 = yy*yy
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if xx2 + yy2 < 4.0 then
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yy = 2*xx*yy + y0
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xx = xx2 - yy2 + x0
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else
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if k < 3 then
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c = '.'
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elseif k < 5 then
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c = ','
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elseif k < 10 then
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c = '-'
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else
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c = '='
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end
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break
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end
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end
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table.insert(line, c)
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end
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print(table.concat(line, ''))
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end
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end
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mandel()
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