Creating Breast Physics 2.0

After creating three animations, of which all contain some kind of breast physics, I'd figure it was time to crack out my writing fingers and explain how I've created those effects. I also touched on this briefly in another post, where I combine regular bone animation with cloth simulation. However, the past few animations have solely been simulated cloth (except Nicky's first, but that's the weakest out of the three).

In that post I mentioned, I was struggling with finding the right way to simulate the cloth. I had been for a while now, with many experiments under my belt in the past couple of years. What has changed since then? Well, not much really. No revolutionary plugin or something like that. Rather the walking animations I got from Adobe's Mixamo was a way for me to not worry about the animation itself (while previously I always animated it myself, except for the cheerleader ones). So I could fully focus on figuring out the cloth physics.

After plenty of struggle, I finally settled on a specific method. Which is to duplicate the mesh of the breasts, and have that act as the physics object. I had initially tried this before, but what is different now is that I was more lenient in changing the settings, including the density of the mesh. I'd make that cloth object fill up with pressure and just simulate it going through the walking animation! Obviously it didn't go as smooth as that, there were a dozen of setting tweaks (and re-simulating) before I settled on something that fit for that scenario. 

The .gif you see above was before I increased the density, creases would unfortunately start to form. It makes sense, it's still cloth after all. After changing the settings to spandex, as well as changing the 'units per cm' (a cloth of 1x1 acts differently than a 10x10 one) to be bigger, those creases mostly disappeared!

Hopefully this has been at least a little bit informative. This isn't as in-depth as I'd like it to be, nor does it contain anything specific on how to solve it yourself. But maybe you'll learn a thing or two, and realize something you hadn't done before. That's how I managed to do these in the first place! :P