Module: Imash::Generator

Defined in:
lib/imash/generator.rb

Class Method Summary collapse

Class Method Details

.generate(hash_data, size, divisions) ⇒ Object

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# File 'lib/imash/generator.rb', line 4

def self.generate(hash_data, size, divisions)

  prng = Random.new(hash_data.seed)

  data = []
  (0...divisions).each { |y|
    data[y] = []
    (0...(divisions.to_f/2.0).round).each { |x|
      data[y] << (prng.rand > 0.5)
    }
    rev = data[y].reverse
    rev.shift if divisions % 2 != 0
    data[y].push(*rev)
  }

  fg = ChunkyPNG::Color.from_hsl(*hash_data.fg)
  bg = ChunkyPNG::Color.from_hsl(*hash_data.bg)

  img = ChunkyPNG::Image.new(size,size,bg)

  s = size/(divisions+2)
  data.each_with_index { |row, y| 
    row.each_with_index { |val, x|

      x1 = x*s+s
      y1 = y*s+s
      x2 = x1+s
      y2 = y1+s

      img.rect(x1,y1,x2,y2,fg,fg) if val

    }
  }

  return img

end