How is clothing manipulated in a clockwork orange?

That entire movie was shown in a computerized poster graphics. It is probably some graphics program that they are able to run on a certain type of computerized graphic emulation. Like the weather man's weather screen is actually a computer graphics overlay onto a green screen. Whatever the technique is, it has been seen in several commercials on TV. It is probably a computer graphic overlay technique. It you watch the end of the movie you will see the credits and who may have done it , or what the process is called.