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If the video is not showing, try this direct link:

https://everlaster.vids.io/videos/d390d3b31f1fe1c45a/physics-test-bone-rotation-test

I'm entertaining the idea of revamping the default (i.e. calibrated) pectoral joint physics.

Firstly, I think there's room for improvement to begin with. But the introduction of the joint angle limit parameters also plays a role - the default angle limits set by VAM are too tight for large breasts, and simply increasing those limits to allow for a more natural range of movement probably doesn't produce the best results. Angle targets and rotation springs etc. would need to be adapted to the new limits.

I've attached a TittyMagic preset that applies the physics used in the test. Save it to the folder Saves\PluginData\Naturalis\TittyMagicPresets.

How do you think the test physics compares to the default physics? Is it an improvement, is it too slow or just right?

Another thing is the possibility of rotating the pectoral bone itself in a way that keeps the angle targets and limits constant relative to the rotation. The last two thirds of the video shows how despite rotating the bone, the breast has basically the same physical behavior as before, it's just angled differently.

This kind of direct rotation could be introduced to Naturalis, it seems viable as a parameter that is calibrated for different sizes and softness values. It also could be used to restore the original shape of the breast that it had with VAM's default breast physics. Moving the bone is possible as well, but it's not clear how useful that will be. Testing is definitely needed, I'm not sure yet how the rest of VAM reacts to the bones being adjusted directly in this way.

Files

Physics test, bone rotation test

Physics test, bone rotation test

Comments

BecauseReasons

An improvement, but a little too flappy in my opinion. Breasts and their connective tissue hold together better. This seems more like there is air inside.

everlaster

Thanks, you're right about the connective tissue and air balloon effect. Those issues have more to do with the soft physics side of things. The soft physics is the same on the default vs the test settings, the differences are just in the pectoral joint's physics :)

Karl Hal

That's better!