Well… surprise, surprise…
There is an excellent thread in the Second Life™ Forum about the designer side problems of getting fitted mesh to fit. See: Blender/Avastar [Fitted Mesh]: Need help/advise with a few issues. Posted by Zakiel Windlow the problems are clearly expressed. Zakiel includes a great set of images to show the problems.
Zakiel explained where he is coming from and what he has realized, “A few weeks ago I was using a workflow that gave me good, fast and (more or less) SAFE results:
Standard rigging and 5 or 6 sizes (or more). But I wasn’t happy, anyways. I always wanted the “fitted” mesh so all the girls could use my clothes without problems or restrictions. That was what I thought or was expecting.
Now I realize that with the fitted mesh there are restrictions too; and the workflow (for now) is harder, longer and not safe as the standard rigging. I have to check the fitting with big breasts, small breasts, big+high, big+low, small+high, small+low, big+close, big+open, big+high+close… You get the idea… And what works for 1 combination probably won’t for the other…”
Within the thread Gaia Clary responds:
04-17-2014 03:23 AM – edited 04-17-2014 03:24 AM
Regarding the shape sliders in Avastar:
Our intention is to make them work exactly similar to how they work in SL. So you can see it like this:
anything that is crappy in SL should also be crappy in Avastar, so you always know that what you see in our tool is what you finaly get in the 3D world of your choice …
For some reason this approach still fails when it comes to fitted mesh. I have an idea why that is and i am trying to fix that annoying issue. It just takes a lot longer to find the fix. Until then the shape slider system in Avastar does not work reliably with fittted mesh.
But note, weighting and exporting of fitted mesh items just works as expected, and as long as you work with classic weighting (to mBones only) also the shape sliders work as intended.
From the comments I see people are forgetting AvaStar was released for Standard Size mesh clothing making. It is now being upgraded to handle Fitted Mesh. The AvaStar people are trying to figure out how to make something that works well. As Zakiel found out there is nothing that works well for fitted mesh. I think when AvaStar is completed, at least the Fitted Mesh part, we will have a tool that allows us to see in Blender what we will see in the SL Viewer.
As I pointed out in The State of Avastar & Fitted Mesh from the 3D modeling side of things we are NOT going to be able to fix the problem that the avatar deforms using mesh-morphs and our mesh creations deform using bone weighting, which is generally used for animation. So, the result of the two processes is never going to be the same. So, Fitted Mesh will be unlikely to ever fit precisely, which has pissed off a number of people. But, where were they when the Lab was asking for feedback?
Now it is a matter of how well can we figure out how to deal with this problem.