Let's assume that I have a Plane moving towards a Sphere. When they are close enough, Plane is using Shrinkwrap modifier to stick to a Sphere. Now I want to add a Driver which depends on situation: is the Plane fully shrinkwrapped or not?
I do not want to use distance between objects as input for the Driver, because their movement is a kind of random.
So, how can I get such information from the Shrinkwrap modifier?