Solution Codebrawl #2

gistfile1.rb

require 'chunky_png'

@image = ChunkyPNG::Image.from_file('input.png')

def pixelate(a, b)
	if a+10 > @image.dimension.width
		w = @image.dimension.width - a
	else
		w = 10
	end
	
	if b+10 > @image.dimension.height
		h = @image.dimension.height - b
	else
		h = 10
	end
	
	color1 = @image[a, b]
	
	w.times do |i|
		h.times do |j|
			color2 = @image[i+a, j+b]
			c1_r = ChunkyPNG::Color.r(color1)
			c2_r = ChunkyPNG::Color.r(color2)
			c1_g = ChunkyPNG::Color.g(color1)
			c2_g = ChunkyPNG::Color.g(color2)
			c1_b = ChunkyPNG::Color.b(color1)
			c2_b = ChunkyPNG::Color.b(color2)
			color1 = ChunkyPNG::Color.rgb(((c1_r + c2_r)/2), ((c1_g + c2_g)/2), ((c1_b + c2_b)/2))
		end
	end

	w.times do |i|
		h.times do |j|
			@image[i+a, j+b] = color1
		end
	end
end

w = dim.width
h =	dim.height
		
i = 0
while (i < w)
	j = 0
	while (j < h)
		pixelate(i, j)
		j = j + 10
	end
	i = i + 10
end

@image.save('output.png')

output.png