Unity mouse implementation

Just wanted to let you guys know that I did write a script package for this very problem, and it's available on the Unity Asset Store for $5. The cursor is a game object that has presence in the scene, and depending on the shape you choose for the 3D representation (it can be anything, just drop a prefab on the proper script variable) you can also determine the curve of a mesh. Kinda cool for rock climbing games and what not :)

https://www.assetstore.unity3d.com/en/#!/content/11944

Here's how to set it up in the latest Tuscany demo:
https://www.youtube.com/watch?v=kOqoqB_RUfY