ZBrushCentral

Symmetry Problem

ZBrush Usage Questions
#1

Hey Guys,

I’m currently working on a Character. The mesh is not a ZSphere Model anymore, I converted it to an adaptive Skin.

It seems that while hiding some parts of the mesh the right side of my character has not been updated properly - Although X Symmetry was on all the way…

Well, the problem is that I would want to have the right side of the model to be exactly the same as the left side, so: Is there a way to cut away the right side and mirror the left side again?

I already tried the Re-Symmetry Tool, but it seems to destroy my mesh (the mesh will be symmetrical again, but some parts of the right side will be unusable - some kind of “exploded vertices”, you’ll get the idea) - I hope there is a decent way…

#2

its because your model is not symmetrical. thats why those verticies explode.

when you hide a part of a model and X symmetry is turned on its not working because those polygons are not there.

so youd have to keep both sides to keep working with symmetry X

you should read the practical manual. if other tutorials dont cover the section on smart-resym how you like. you should read my tutorial near the bottom. it mentions things you have to do to prepare your model to be sculpted in zbrush and itll give you the least problems or none at all.

#3

Hey Ambient,

Thanks for the help, but does that mean there is no way to repair my mesh?

It’s possible to export my mesh to Maya, delete one half, mirror/merge it, export to ZBrush again and - joy, right? I’m pretty sure that I read that ZBrush will generate the lower poly Versions. My mesh is currently at 470.000 Polys, Maya should still somehow handle that in Wireframe…

#4

If you have followed the re-sym steps Im not sure why that does not work for you.
Have a look again at the resym tutorial included with Z2. If you export the mesh to
Maya cut it in half then weld the points together I dont think this will work since
the vertex numbers will be to messed up.
The vtx need to be in a certain order for
the reconstruct to work.

You should be able to resym the model if you have subdivided it in Z2.

#5

This is what happens if I use the Smart Resym Tool:

I’ve masked the left side of the model and used Smart ReSym. Seems it won’t work, no matter what I’m doin´.

Well, don’t tell me there is NO way to recreate Symmetry, please guys…

I also tried to export the geometry back to Maya, but Maya seems to hang if I want to delete half of the model.

#6

If you don’t get good symmetry at the current subdivision level, go to a lower level and run the Smart ReSym feature. Then work your way back up to the highest level.

#7

Hey aurick,

Sadly, did not work at all…

#8

I often have this problem… With a massive use of sculp/smooth in high resolutions (subdiv 6 for example), the mesh generate some symmetry troubles even if the X sym is activated… And when i use Smart resym to correct that, the mash explode or crack and is unusable… it makes me furious !!!

I spend a lot of hours and i have in result a destructured mesh and no solution…

But this night, i’ve found one wo works well in one second !!!

TRY THIS ! :

  • Undo your smart resym. or do not apply smart resym for instance.
  • unmask all your mesh. The whole mesh must be UNhide…
  • click on the UNIFY button in the tool palette. (the size of your model will probably change, but it isn’t a problem, i think…
  • And then, click on smart resym… It works well !!!

in my case it’s a good solution for a recurrent problem. Finally, i haven’t sleep this night :wink:

I really hope this solution works for you…
sorry for my bad english… i’m french.

Have a nice day !!

#9

Bravo for the trick :cool:
Pilou

#10

Wow, I just checked this thread, since I had some problems with Smart Resym again, but jéjés advice is awesome - It works all the time, that’s simply awesome.

I always had both sides of my meshes on the canvas, pretty idiotic, since it slowed my system down significantly - But now, it works like a charm. That’s so cool, I’m really in love with Smart Resym now!

Thanks again, Jéjé - Everyone should know about that!

#11

you’re Welcome, Thomas…

I’m really happy for you, because i know well how this problem can cause some nervouse breakdown…

and now, i’m sure that it works not only for me…

have a good Zsculpting !!

#12

Thanks for greetings, all… soon other tips on my website…

#13

sorry to say. But I tryed jeje’s exact way but it still explodes my mesh into harmful and nasty spikes. Heres a picture. I wanted his right hand to be smart resym’ed onto his left. But I just have to go sad to bed :evil:
fatass.jpg

#14

couldnt make it work even though i did everything jeje suggested.
Heres a pic of my dude.
His right hand is supposed to be smart resym’ed to his left.
But it just gives me vertices hell.
fatass.jpg

#15

Very sorry Jais, i’ve no more tip for this specific problem…
hmmm… the initial mesh of your work comes from another soft, or you did it in zspheres ?
sometimes, very little mesh don’t respond to symmetry, you can try to export your mesh in obj, import it in max or maya, and reexport it, changing the scale ratio (x1000 for example) and reimport in zbrush, and try a smart resym… perhaps it will help you, but i’m not really sure…
tell me informed, we will finish to find a way !
best regards,

#16

another try :
have you tried to use the resym in different subdiv levels ?

#17

sorry for the dobble post. dont know what happened.
I modelled it from zspheres.
Actually I did it from a very simple “template” zspheres body from this site.
:cry: I just cant find anymore.
Anyways I’ll try that workaround you talked about.
I’ll keep you posted.

edit: yes I tried working my way up the subdiv level. And I think its around 3 or 4 its getting wrong.

#18

:cry: hmmm i’m sorry i’ve no more ideas…
perhaps you can send me your ztool, if you want, i’ll search how to achieve the symmetry…
i’m really disappointed, i can’t help you… You are the first for wich the tips don’t work…
[email protected]

#19

I understand. I will try and send you the tool. Thanks alot for taking the time.
I really appreiate it.
I give you link to my server in your mail because it is like 12 mb. It has 5 subdiv.
It originally had 7 but I made polymesh3d on the 5th subdivision and reconstruced the lower subdiv.
Hope thats fine.

#20

I tried to do resym and then also smart resym up through the divisions.
It still wasnt too good, but I didnt have vertices flying all over so now I can work from there.