gistfile1.rb

def check_pixel(x, y)
    set_checked(x, y)
    
      @shape_pixels = @shape_pixels + 1
      if (@shape_y_pixels[y] == nil)
        @shape_y_pixels[y] = 0
      end
      if (@shape_x_pixels[x] == nil)
        @shape_x_pixels[x] = 0
      end
      @shape_y_pixels[y] = @shape_y_pixels[y] + 1
      @shape_x_pixels[x] = @shape_x_pixels[x] + 1
      
      if (x-1 >= 0)
        if (!is_checked?(x-1, y) and (is_pixel_white?(x-1,y)))
          check_pixel(x-1, y)
        end
      end
      if (y-1 >= 0)
        if (!is_checked?(x, y-1) and (is_pixel_white?(x,y-1)))
          check_pixel(x, y-1)
        end
      end
      if (x+1 < @width)
        if (!is_checked?(x+1, y) and (is_pixel_white?(x+1,y)))
          check_pixel(x+1, y)
        end
      end
      if (y+1 < @height)
        if (!is_checked?(x, y+1) and (is_pixel_white?(x,y+1)))
          check_pixel(x, y+1)
        end
      end
  end






def set_checked(x, y)
    if (@checkedpixels[x] == nil)
      @checkedpixels[x] = Array.new
    end
    @checkedpixels[x][y] = true
  end
  def is_checked?(x, y)
    if (@checkedpixels[x] == nil)
      return false
    else
      return @checkedpixels[x][y]
    end
  end