This morph will be the basis of all future Naturalis breast morphs. For now, this morph is only available packaged into the demo scene var. In the future, I plan to release it in some morph pack.
The purpose is to lock in to a shape and ensure precision and consistency for the breast pose morphs that Naturalis will animate. This will include everything from
g-force morphs used by Shapeshift to animate breasts in response to acceleration of the pectoral joint
collision morphs used to realistically shape the breast driven by deformation of the soft physics mesh
joint angle based morphs such as shoulder rotation that in some way affect the chest area
additional base shapes for different breast types will also use this as a starting point
For the most part, the pose morphs will not be based on this shape directly, but instead will use (i.e. have morph deltas relative to) a zero-g adjusted version that undoes the gravity based sag that is built in to it. It was more natural for me to start from a morph where gravity is built in since it's much harder to judge whether a zero-g shape actually looks correct. But the zero-g shape is technically the ideal base shape for creating pose morphs for animation.
So the next order of business is creating the zero-g morph. Like this reference morph, it needs to be about as close to perfect as possible, since all of the pose morphs will be based on it.
Natural under-breast curve with a sharp skin fold:

Round and glitch free geometry even at Smooth Passes 0 and no tessellation plugin:

Corrected side curve/fold angle - near the armpit, breast base is wider and lower, producing a side curve that's more parallel with the breast top curve and blends in better with the armpit (reducing the fake boob impression):

In addition
there's small fixes to the consistency of the breast area geometry relative to the base Genesis 2 figure
nipples are not part of the morph, in these screenshots and the demo scene I am using Nipples 0, Nipple Length -0.34 and Nipples Size 1.00 (I find Nipple Size preferable to Nipples which creates a bump around the areola)
separate L/R morphs
The morph is not intended to be used at values other than 1.000. Above that, the under curve skin fold geometry may clip with the chest and you may get issues especially around the armpit.
I've tested the morph with the current version of Naturalis and it seems to pair great with it, even though it includes some pretty significant changes to the geometry especially in the under curve/fold. I'm hoping the reverse will also be true - that the pose morphs created based on this shape will pair well with existing VaM models that just use built in morphs.
It would be an understatement to say that creating this morph was difficult and time consuming for someone with little experience in 3D artistry. I'm extremely thankful to my professional 3D artist friend and teacher who has helped me and continues to help me overcome issues that I couldn't really figure out on my own. They will hopefully one day release something amazing for the VaM community and enable me to link to their profiles and content, since they do an amazing job and are very talented.

Credit: Short hair4 by ddaamm (CC BY)
The purpose of the demo scene is to make it easy for you to inspect the shape and quality of the morph on the default VaM model. The body shape is unedited apart from the Breast_RefM morph and nipples. It starts with Smooth Passes set to 0 in user preferences which shows the least forgiving version of the morph in VaM. I'd also suggest running the scene without a tessellation session plugin.
Download the morph/scene var and the TriggerUserPreferences dependency via the link in the Membership tab or your DMs.
Other dependencies (free & Hub hosted):
Short hair4 by ddaamm (CC BY)
Acidbubbles.Timeline.287 (CC BY-SA)
-everlaster
jimmy peterson fife
2024-12-02 22:25:26 +0000 UTCRom Zombadil
2024-11-27 00:34:41 +0000 UTCPan-da!
2024-11-26 20:03:05 +0000 UTC