Information about 3D reflections
I'm trying to set up a 3D set in HitFilm Pro 2017. I'm seeing some odd behaviour with the reflections. Firstly, the set doesn't seem to reflect on itself properly - the furniture doesn't show up on the metal floor, etc. I thought perhaps that one mesh simply doesn't self-reflect in HitFilm, so I made another copy and hid it with "Casts Reflections if Not Visible" toggled. This definitely helped, although the reflections appeared in slightly strange places. Things got really odd when I tried to place an object in the set. At first, I thought it wasn't reflecting at all, but I eventually found that the reflection was there, but wildly outsized and far away.
Finally, I have some composite shots of characters keyed and placed in the scene, and they don't appear to be casting reflections at all. They're currently set as 3D planes, and they intersect with the set and other objects just as expected. They cast (oddly diffused?) shadows, but no reflections. I tried to see how they would work as "3D Unrolled", but they just vanished - which is very odd. Is there some documentation on the way HitFilm handles reflections that I am missing?