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I really need help on Zbrush....

ZBrush Usage Questions
#1

Hello,

I have finished sculpting and texturing on Zbrush. I was about to using Zmapper to creat testure of my model, then I found out that I have been sculpting and texturing on wrong uv mapping files.
I had 2 files, one is uv mapped file and one is not…and I have been used the non uv mapped file.
Whenever I use Zmapper, I get “multiple uv region detected” and unable to create normal map…
Is there anyway I can transfer all my work to the right uv mapped file?
I can’t do this all over again…
Please let me know.

Thank you.

#2

If the vertex count of the two models is the same (same base geometry) its a fairly easy matter to import new UVs into the model with the sculpting. Follow the procedure on the bottom of this page:

http://www.pixologic.com/docs/index.php/Working_With_Uvs

Basically, just import the New UVs as an OBJ at the base level.

If the models have different geometry, the process becomes slightly more complex. In that case, you’ll be using Project All in the subtool palette to transfer sculpting and /Or color information to new geometry.

#3

Thank you for the reply Bingo_Jackson.
I am a bit confused here. So even though I sculpted a model with SDiv 6, I can bring it down to SDiv 1, and the uv can be transfered?
I also need more information on "Press Tool: Texture: Guv or Auv " part. Do I press Guv, or Auv?
I somehow followed the procedure, but it didn’t work.
Here is what I did.

  1. Open Zbrush and bring my finished model.
  2. Choose a model (face) and bring the SDiv down to 1.
  3. Go to texture, and press Guvtiles or Auvtiles
  4. Store MT
  5. Import the model, which has the correct uv map
  6. Go to Morph target, and click switch…

Am I doing this right?
Please correct me if I am doing anything wrong.

Thank you very much.

#4

I don’t think you need to do op3.

When you import a model on top of an existing one at subdiv 1 you also bring in with it its UVs, replacing any that may already be there.

Richard

#5

Yeah, you want to follow the directions for importing UVs in that link, not creating them in ZB.

#6

Somehow it doesn’t work…
When I started sculpting my model, I didn’t store morph traget…can this be the reason? You know if you don’t store morph target, and once you Sdivi up to 6, and bring it down to Sdivi 1, the original size changed?

Sigh…

#7

I followed the step from the link, but it doesn’t work. I don’t know, maybe I am doing something wrong?
After switch the morph target, I go to texture, and press “new”
Then I click Zmapper, but it says Multiple UV region detected…

#8

Your UV layout may be problematic. Take a look at this post by Aurick:

http://www.zbrushcentral.com/showthread.php?t=64269&highlight=multiple+regions+detected

It might be helpful to take a look at your UVs, and see if any are too close to a border, or overlapping in some way.

#9

Thank you for the link.
This is the UV that I need to use…please take a look and let me know if I need to fix anything.
Thank you again.

uv_map.JPG
uv_map.JPG1680×1050 129 KB

#10

Make sure the there is a space between your UVs and the edge and between uv islands.

Some of the areas that could cause problem below.
uvmap.jpeg

Richard

#11

Thank you so much for the advice!!!
As you said, I chose all the uv, and just make it a bit smaller, and everything works fine now!!
I can transfer the uv.

Thank you so much! You saved my weekend and time!

Thank you.

#12

That’s good news to hear.

Richard