Digital Meat shows how to rig an actuator using an aim constraint to have objects point at each other.
Constraints are an essential part of any animation package. They allow you to create more complex rigs and set up systems that are much easier to animate. When working in Cinema 4D, its constraint tools can make for an easier time when you are rigging things, like sophisticated machinery. With this example, Samuel Winter (Digital Meat) shows how to use the Aim Constraint to rig up a working actuator in Cinema 4D.
The tutorial sees Samuel using the constraint tag while in aim-mode, which allows you to have two objects in the scene point at each other’s pivots. Without a constraint system, a setup like this would be much more challenging to pull off and animate.