We used software called Unreal Engine to previsulize the end scene on top of the turbine. We created an exact 3D replica of the corner bath units and our two actors and placed them in an environment we created similar to our location. Then we were able to move the camera around to see what angles we could get and and how it could look, which meant on the day we shot this scene we knew exactly what we need to do to achieve the final effect.