I have a need for something to be solid when looking at it from the front, but when you look at it from the back, I want it to be translucent.
So the first part I need is which observable should I watch to see if the camera across the plane’s, ah, plane? That way if it is one side, make visibility = 1, else make visibility .3.
The second part, and I don’t know there is an answer, is how do I make a solid particle have the same behavior? Specifically, how do I match or mimic “visibility” for a particle?