Draw cool loops in your terminal

loops.rb

POINTS = 10000
PRE_ROTATION = Math::PI * 1
LOOPS = 5
DIMENSION = 101

values = Array.new(DIMENSION){Array.new(DIMENSION)}
middle = DIMENSION/2+1

POINTS.times do |i|
  radius = DIMENSION / 2 * i / POINTS
  angle = PRE_ROTATION + LOOPS * Math::PI * 2 * i / POINTS

  x = middle + radius * Math.cos(angle)
  y = middle + radius * Math.sin(angle)

  values[y.round][x.round] = "\e[#{31 + (5 * i / POINTS).round}m* \e[0m"
end

counter = 0
values.each do |array_val|
  array_val.each do |elem|
    symbol = elem.nil? ? '  ' : elem
    print symbol
    counter += 1
  end
  print "\n"
end