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This is (nearly) the same animation for both gifs, I'm just trying out different camera angles. I might throw these two away, so you guys can have 'em. I have a more zoomed-out angle that captures the thrusting action better, I just can't help myself when I see another angle that also looks decent.

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Jiggle physics are fun, but animating that way comes with its own challenges. I've discussed this before, but for those who don't know, I basically set up these two "boob proxy" meshes, that look like this:

Ignore the floating hand🤣, was just experimenting with collision on a hand mesh for a potential boob-grab a while ago, and it turns out to be difficult to get especially satisfying results.

Each one is a cloth simulation, and the settings determine everything about how they jiggle and move. Here's a screenshot of most the current settings I default to

The "Pressure" section at the bottom is basically what turns these sacks of cloth into "water balloons," which leads to a visual result that I like. But I'm always kinda chasing something with a more supple feel, more fluidity in certain areas, and it's difficult to figure out what needs to be done to get these results. There are a lot of factors that affect the end result: The cloth sim settings, the proxy meshes and the area they cover, the accuracy of the bind to the base mesh, the vertex density in the boob area of the base mesh, the scale of the models themselves, the motions of the animation...

Suffice to say, it's tricky. I'd like Julie's boobs in the above animations to have more supple motion at the "base" of the breasts and not just have them kinda flopping the way they do lol. PROBABLY need to fuck with the proxy meshes to fix that.

Anyway, back to it ~💕🎵

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a1000times

damn its that deep, appreciate the effort on the detail

Janis

It is 2025 and we still haven't developed proper tools to simulate the human body. Water, cloth even fucking wind, but it is too much to ask for proper BOOB- technology?! Smh.

Janis

Is this something we could ask ChatGPT to do.

flinpaltwell

Oh, this is more of a skill issue than a tech issue, I think. Don't get me wrong, boob physics have been a hilariously popular topic throughout the development of 3D graphics, and the pursuit of realistic jiggles has actually pushed development of other areas in 3D forward throughout the years (I'm not joking). So it is seen as this "holy grail" of 3D simulation and I've no doubt the tech is still developing. But also, if I knew my shit better I'm pretty confident I could get jiggles a lot closer to what I'm looking for. -- I will confidently tell you that ChatGPT would be useless here, even if I could properly put the setup and goal into words without any visuals (which I don't really think I could do). It's not a tool I trust for software questions unless they are very simple and straightforward in nature. If you're really talking about AI art stuff...there are AI animations with good jiggle physics, but I've firmly decided not to go down that path. There are a lot of reasons for this that I'll likely make into a post/rant at some point, but suffice to say I've given it a lot of thought...and I believe my work would honestly deteriorate and become limited in crucial but hard-to-describe ways that aren't worth the exchange. For example, I've never seen an AI art kiss that captures the mouth press in a way that I like as much as my own work, and that's just for starters. Anyway, that might not have been what you meant at all, haha. So I'll stop talking.

Janis

All good :)