Project ideas

There are few other 2D optics simulation projects, that could be useful for adding new features into *Astree*:

- https://ricktu288.github.io/ray-optics/
- https://github.com/LarsKue/LenseSim
- https://github.com/mkovacs/yami
- https://github.com/GyeonghunKim/optics_simulator
- https://github.com/SuperiorSignals/nash-optica
- https://github.com/ogarokpeter/Geogebra2

Review the linked 2D optics simulation projects and compare their capabilities with Astree. Identify a specific feature that would be useful to add, then document its scope and acceptance criteria; the issue does not name Astree files, tests, or entry points.

Written by the indexing model from the issue text.