这个项目使用画笔来测试Scratch的渲染性能。尝试滑动Max FPS的滑块，当FPS小于30时会发生渲染错误。这进一步证明了Scratch是基于30帧的。 ========================================= This project used Painting Brush to test the graphics performers in Scratch. When you slide the Max FPS slider low to 30, some strange things will be happened. That's further proof the Scratch is based on 30 frames.
