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#!/usr/bin/env ruby
require 'term/ansicolor'
require 'tins/xt'
require "complex"
include Tins::GO
@width, @height = Tins::Terminal.cols, Tins::Terminal.lines
def color_random
(1..3).map { rand(255) }
end
def draw_set(rx, ry)
sx = (rx.end - rx.begin).abs / @width
sy = (ry.end - ry.begin).abs / @height
ac = Term::ANSIColor
color =
ac::Attribute[ color_random ].gradient_to(ac::Attribute[ color_random ], :steps => 16) +
ac::Attribute[ color_random ].gradient_to(ac::Attribute[ color_random ], :steps => 16) +
ac::Attribute[ color_random ].gradient_to(ac::Attribute[ color_random ], :steps => 16) +
ac::Attribute[ color_random ].gradient_to(ac::Attribute[ color_random ], :steps => 16) +
ac::Attribute[ color_random ].gradient_to(ac::Attribute[ color_random ], :steps => 16) +
ac::Attribute[ color_random ].gradient_to(ac::Attribute[ color_random ], :steps => 16) +
ac::Attribute[ color_random ].gradient_to(ac::Attribute[ color_random ], :steps => 16) +
ac::Attribute[ color_random ].gradient_to(ac::Attribute['#000'], :steps => 16)
iters = color.size - 2
text = ''
for j in 0...@height
for i in 0...@width
n, z_n = 0, Complex(0, 0)
c = Complex(sx * i + rx.begin, sy * j + ry.begin)
while n <= iters
break if z_n.abs > 2
z_n = z_n ** 2 + c
n += 1
end
text << ac.on_color(color[n]) << ' '
end
text << ac.reset << "\n"
end
puts text
end
opts = go 'x:y:'
rx = opts['x'].full? { |r| Range.new(*(r.split('..', 2).map(&:to_f))) } || (-2.0..1.0)
ry = opts['y'].full? { |r| Range.new(*(r.split('..', 2).map(&:to_f))) } || (-1.0..1.0)
draw_set rx, ry
|
