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trails = [[0, 0]] * 60
Shoes.app :width => 200, :height => 200, :resizable => false do
nostroke
fill rgb(0x3, 0x1, 0x3, 0.6)
# animation at 100 frames per second
animate(60) do
trails.shift
trails << self.mouse[1, 2]
clear do
# change the background based on where the pointer is
background rgb(
20 + (70 * (trails.last[0].to_f / self.width)).to_i,
20 + (70 * (trails.last[1].to_f / self.height)).to_i,
51)
# draw circles progressively bigger
trails.each_with_index do |(x, y), i|
i += 1
oval :left => x, :top => y, :radius => (i*0.5), :center => true
end
end
end
end
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