I want to look around with the camera in my 3D scene when sliding with my finger on the screen. I have scrolled the code in the “rollercoaster” example and tried to copy and change the variables, but that didnt work. So how do you do?
@MMGames take a look at my library here which uses tweens to move the camera 
http://twolivesleft.com/Codea/Talk/discussion/3021/scenecamera-animate-your-3d-camera-simply-using-tweens