title: OpenGL C++ Minimap of current setting
body: <p>I'm looking for a way to create a second view from the top of my current 3D scene. I would like to do this as easy as possible. The basic idea is that you have a subwindow that will display a top view of the setting.</p>
  
  <p>I've looked into subwindows in openGL but the problem is you have to redraw everything (basically ending up with 2 scene's with different angle = not good). Also because this will be used in a 3D game called "tower box stacking" (you have to place boxes on top of each other and make a high tower) its impossible to use the subwindows way to do it (since you would get 2 scenes with different blocks/locations/actions/...)</p>
  
  <p>So how can I add a "second camera" to my current scene and then position it on top.</p>