title: 3D rotatable cube with clickable areas on sides
body: <p>What I want to accomplish is an iPad Application with a 3D rotatable cube, and on each side of the cube I want to define multiple areas where once clicked would take to another view or display a popup.</p>
  
  <ol>
  <li><p>Can this be achieved with some effort using OpenGL ES in Xcode from scratch, or should I use a 3D framework, if so what would be the easiest framework? (I have only heard of Unity and its pretty expensive)</p></li>
  <li><p>Does anyone have a good tutorial for me to learn how to do this?</p></li>
  </ol>
  
  <p>I already tried 3D CSS3 Transformation but I want to keep that as the last resort.</p>