Problem Restrictions Mirror Lens

That the discussion does not stray from the goal, it needs to make the discussion of restrictions, is as follows:

1. The input of the software consists of a range of objects and distances in units of cm mirror and a focal point of the lens in units of cm.
2. Distance of the focal point of the mirror and the lens is limited between 0 to 100.
3. Shadow objects to be set up in the form of a horse and the chess pieces rotating on its axis.