Hi

Just when I thought I understood how parenting worked...

I'm trying to attach some nipple rings to Aiko.
So I zeroed Aiko and positioned the rings (props) in her nipples.
I parented them to the appropriate collars...but when I applied a pose to Aiko the rings didn't track properly.
So I tried moving the rings in the hierarchies to the collars...but again no good.

So, how can I fix these rings in place so that when Aiko is moved or (more especially) posed the rings stay where they were meant to be?

TIA - Martin

(nudity tagged in case images are needed)

Not sure if this works or not, but try placing the rings and then going to your tool bar. Find the drop down that has "Change Object Parent" or something like that (Sorry, I don't have Poser open right now and forget which menu it's under).  Then change the parent to "L Collar" for the left ring and "R Collar" for the  right ring.

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The problem here is that Aiko (and the other DAZ mil3 figures) have joint controlled morphs, which the parenting won't allow for. In other words, when you move Aiko's arm, her nipple moves too. To fix this you could add a morph to the rings to put them back in the right place, but I'm not clear at the moment how you'd link it in to the parent figure's JCM. I'm sure there's a way. ;)

When you parent a a prop (or anything) to an actor (body part) it parents to the 'origin' (Center Point) of that actor, NOT the surface! The parented eliment will follow the motions of the origin, but changes to the surface will have no effect. You may be able to improve things by the use of ERC, but keeping the rings in the same place on the nipples in all circumstances is probably beyond the practical possibilities of Poser. As long as the nipples stay in the same place relitive to the 'origin' all is fine, but if the nipples move relitive to the origin the rings will stay where thay are.

Occasionly I have similar problems parenting things yet they don't move with my figure.
I have no idea why, possibly a bug.

In all cases a fix was to reload the figure & prop and then re-parent them.
Also try parenting to the chest instead.

Good Luck.

Scott

it would definitely be a bummer having to create a "nipple" body part. too bad ya can't just create a nipple group, then parent something to that. there's something about "dependent parameters" and "blendtype" in the manual somewhere, but I dunno how it works.

Two possibilites.
One: make a figure of the nipple rings, using the body parts hip, abdomen, chest, rCollar and lCollar. Only the rCollar and lCollar would have geometry - the rings themselves.
Then add matching morphs (for example with The Tailor or Netherworks' A3 ClothKit)
It is possible to have these morphs follow the Aiko JCM breast morphs automatically - the technique is called ERC. nerd3D has a tutorial on ERC on his site, www.nerd3d.com. 
Another option is using my CopyMorphs script (here in freestuff) - it'll copy the morph settings of Aiko to the rings.

Two: make those rings dynamic cloth. Sounds strange, but if you add all vertices to the constrained group, they'll move with Aiko's nipples. They might deform a little, but not too much probably. You'll have to calculate the simulation, of course.

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why wouldn't making them conforming work???

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that's what sv said - make 'em a conforming figure. it would work AFAIK.