This app is an interactive demonstration of the basic principles of geometric optics. It is meant to be used for educational purposes and as an aid for learning and understanding. It is a simple app that allows you to experiment with different types of optical systems and trace the paths of the light rays that pass through them.

You can adjust the settings of the point light sources, the size of the grid, and the width of the beam. You can also change the position of the object to be used as a basis for the calculations.

The app is meant to be used by students and teachers in the classroom and help with the learning process. It is not a complete tool that allows you to do all the calculations.