利用Ogre实现了雨滴的效果，还可以改变createscene函数实现自己的场景。-Use Ogre realize the effect of the raindrops, but also can change the function createscene achieve its own scene.

This project draws a particle spray at the cursor position. I needed to make a video overlay to use as a Magic Wand . This is nothing new, but is a good graphical math example to play with.-This project draws a particle spray at the cursor position.