[UE4] Runtime Virtual Texture Foliage Interaction Test

This tecnhqiue considers direction and location to be used with the basic pivot painter tool in UE4. Circles are spawned into the RVT with a radius used as falloff, and direction bends them down. The fade that occurs on each circle is used to rise them back up to the previous position. A bit jittery at the moment due to the aniamted falloff.