   Zoom window Help
  hi,  I am creating an input 3D and I have some problems to manage the zoom.  I am using the buffer of the FeedBack to have coordinated her 2D of the objects to compare with the rectangle of the zoom, therefore considering only the objects that reenter in the window calculation the encumbrance 3D and at the end I position the center of the view and the position of the room.  All works only if I contain at least an object in the rectangle.  I would like to find a solution to be able to perform a zoom on a part of an object without having to divide the objects in smaller parts instead.  Can someone help me?   