A simple character editor in a UE game?

Question

C++ / C#

By what principle are character editors made in the game itself (like in the Sims game, well, change the size of the head or lips, for example)? Interested in links, articles, videos - anything to understand the basics (preferably in Russian). Or maybe there are ready-made libraries? I'm also interested in whether it's possible to make a simple character editor only on blueprints? If so, are there any guides? Maybe it can be done in some other way?

Answer 1

There are two ways - with mesh editing and without mesh editing.
Without editing - it's easier for a programmer, but harder for artists (probably). Roughly speaking - 10 variants of ears, 10 variants of lips, 10 points of their placement on the head are drawn - and all this is DISCRETELY selected by the user. Those. 3 set of ears to attach to point 8 on the head - that's what the user chooses.
With editing - this is already when there are "sliders" - i.e. you can adjust the same lip size. Here, the influence of a particular slider on specific mesh vertices is already algorithmically described. It is quite possible in some cases you can get by with a lerp between the two extreme options.