module PF
  class Sprite
    # Fill a rect
    def fill_rect(x1 : Int, y1 : Int, x2 : Int, y2 : Int, pixel : Pixel = Pixel.new)
      # draw from top left to bottom right
      y1, y2 = y2, y1 if y1 > y2
      x1, x2 = x2, x1 if x1 > x2

      y1.upto(y2) do |y|
        x1.upto(x2) do |x|
          draw_point(x, y, pixel)
        end
      end
    end
  end
end