Visualize sun angle of incidence as it hits a light shelf and brings light into an interior space

I want to set up a gh file that allows me to visualize sun rays and bounces parametrically as seen here:

Anyone know how to do this? I was trying to use ladybug’s bouncefromsurface component, but it doesn’t seem to work for interior spaces.

Please let me know if anyone has any workaround. Thanks!

I got pretty carried away in this thread, looking at sun angles of incidence reflected off the curved surface of a building: