Lots of obj files loaded and displayed. When you click somewhere, the current obj is hidden and the next one, with a better resolution is shown.
You can move the camera with the arrow keys and move the angle of the camera with 2, 4, 6 and 8 (the arrows of the numpad), or you can do a drag-and-drop like (click on the mouse to grap the scene, and move the mouse to rotate the camera). You can also select a camera by clicking on the red part of it, and get back to the free camera by clicking again. You can also select a camera by simply clicking on the object you want to see. The program will choose the camera that you want, and move to it progressively.
A mesh of a sphere is fully loaded, and displayed progressively. This test is here to prove that we can dynamically add vertices and faces to a mesh.