最新版本，针对unity3d 3.1的。作者的更新速度还是蛮快的。下面是详细介绍：
I’v just uploaded the next version of my terrainpaint script. i released it on github so i hope other people start working on this script and improve it!
I have little time to do it all by mysel
Known bugs:
- Previews not correct hight/size
- Preview rotation not correct while painting on normals.
- Preview  only takes the first prototype object
- Sometimes previews are missing.
- Size of the brush is wrong when painting on non-planer meshes.
Features:
- Adjusted the shader for the terrain (now supports shadow)
- Added feature : painting objects
- improved the preview
Download the whole project on github:
ttp://www.github.com/Pixelstudio/TerrainPaint/
Have fun!!