1. s = Sprite.new
   
2. s.bitmap = Bitmap.new Graphics.width, Graphics.height
   
3. s.bitmap.fill_rect s.bitmap.rect, Color.new(255, 255, 255, 255)
   
4. x = Bitmap.pixelMap "." => Color.new(255, 155, 225, 255) do
   
5.   ",...,,,.,,.,,,.,.,.,,.,.,".each_char.each_slice(5).map{|t|t.join}.join "\n"
   
6. end
   
7. s.bitmap.blt 1, 1, x, x.rect
   
8. s.zoom_x = s.zoom_y = 50
   
9. [Graphics, Input, s].each &:update until false

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可以尝试一下用其描绘满屏画面，看看执行效率＝ ＝