In Cinema 4D you can use Xpresso to create all kinds of controls that can make your life much easier. As an example, you can use the expression language to create a system that can display a range of image maps, with a simple and easy to access control.

learn how to animate lego face expressions in c4d

Why would you want to do this? Well, as an example, maliohammad shows how you can use it to change the facial expressions of a Lego miniFig. By creating a series of image maps for the character’s eyes, mouth, or anything else you want to animate in 2D, you can easily create a little bit of Xpresso that will give you the controls you need.