ZBrushCentral

Import/Export scale problem again

ZBrush Usage Questions
#1

Here we go again. I’m having an issue with one of the subtools scaling down when I’m importing it back to zbrush…

So I have a model broken down into different subtools. I export the subtools to max, scale them up(doing a simple scale just for testing), then export them all out again. I import all the subtools into zbrush, and they all work, but the last one scales down rather than up. All subtools are exported at a 1 scale and I’m using the same procedure on all of them, any help would be appreciated/

#2

Same here. I tried using OBJ and GoZ. I am going to try and import OBJ into Maya and then save that out and then re import it into Z.

Wish me luck!

#3

It looks like this was an export issue.

For some reason this was the default export options:

Export scale 92.054451
X Offsett -0
Y Offsett -.994831
Z Offsett -.020188

I set these to:

Export scale 1
X Offsett -0
Y Offsett -0
Z Offsett -0

Seems to be giving me the correct scale now between Maya and Zbrush.

#4

this has me wondering why there so many decimal places now, is anyone really going to use a setting in the millionths, all the sliders are like this now, and transpose too, weird.

maybe there is a reason but i’d like to know.

#5

Glad you fixed your problem nickz, but as I said in my initial post, the export setting is already on 1 for all my subtools. I’ve been through this enough times to know that much… Still can’t figure out what the problem is so any help would be nice

#6

I’m having issues with this again as well. I have no idea what is going on. The export scale options seem to change every time I export something???

#7

Yep. Still having this problem.

Here’s another problem kind of related to this. I have a mesh that I export into max and back into zbrush. When I’m importing it back, it tells me that the topology has change when in fact I haven’t done anything to the mesh(and I do convert it to editable poly). So now it asks me if I want to transfer the high-resolution details to the modified mesh, and if I say no, it’ll import the mesh, but the scale and position is all wrong…

#8

I actually thought this was fixed, It worked once with me, then went all ****ed up to it usual ways.
Quite a pathetic bug, that ruins alot of peoples work-flows.

#9

May of found fix for this, think actually been reported before ?

Whatever program your working with, Export your lowest level mesh into obj.
Position your model in correct position you want it. Then export it back to zb, this should reset your whatever problems you get with exporting and importing into zb 3.5.
Since i find it might be problem with working from zb 3.1 ztls, their setup on different xyz, so you get weird results importing/exporting, so this hopefuly resets those to new 3.5 xyz.

This is purely guessing if it works on or not, but it worked from me just now more then once.

#10

Its not just the position its the scale. Exporting a mesh from zb3.5 and importing it into max 2010 results in a mesh that is too small to work with. Converting inches to meters results in a mesh of good size but with the pivot point in the centre of the figure. That isnt important atm as long as the mesh imports properly back into zb. Retopo that and import it back into zb as an object and the scale is consistently wrong. Regardless of importing with the simple brush or the poly tool active.

Testing by exporting a decimated mesh as an object and reimporting into zb 3.5 gives the same errors (of course as it is a starting point). Expoting the mesh at different scale settings and changing the system units settings in max doesnt fix anything so far.

There is another thread knocking about here on this but no solutions for me yet, will keep looking.

ZB rox :slight_smile:
no sarcasm here.

#11

Having same issue here. Can the moderator/devs PLEASE address this bug ASAP?? What is the definitive workaround to this issue and when can we expect this bug to be squashed because it’s a doozy! I mean, this is bread and butter import/export types of things that shouldn’t be broken! Sorry for the astonishment/non productive post here but pinched for time on a big deadline and this is the LAST thing our studio needs to be dealing with at this point.

#12

I blew it. I was wrong. I stupidly went from 3.1 to 3.5 with the same model. Export the mesh or mesh part/tool from zb. Import into 3d app chances are it will be too small, if you reimport it into zb over the original tool and then reexport it it should be a good size, or the old size you had. Set your system units to centimetres to make sure. What I also did was blow the imported model up 10,000 percent and scale it down when finished to 1 percent if my export settings in zb were 1, 0,0,0. Its not a bug, you are switching apps mid tool. If you start a new model and work the way you always have everything works as normal in 3.5

Hope this helps.

#13

Thx for the reply Kanga, but your solution doesn’t work for me unfortunately :frowning: I really hope they address this issue soon.

#14

Sorry it didn’t help. First thing I did after a bit of unsuccessful messing about was set my units to centimetres in max and use one of my base meshes as a test bunny to go through the standard procedure,… which worked like always. Exporting, importing appending etc. That relaxed me and then the method above is getting me running on the 3.1/ 3.5 model.

Sorry it didn’t help. Have you layed out your problem on the other scale thread here?

#15

Hey Kanga,
I think I may have figured a work around in XSI. I can take the xyz units from zbrush and input them into translate xyz slots in xsi and my mesh will move back to where it is supposed to be. I dont mess with the scale or anything. That seems to be working for now. A royal pain in the rear and LOTS more time goign to be needed to get these meshes baked out proper but it’ll work i think. My original .ztl was from 3.1 and i always append my new meshes to this base which has worked for the last month or so, but then all of a sudden it will get borked and be off.

#16

Not sure if this is useful now but maybe it is…

Import your OBJ
Clone your obj with the clone button
THen append it to your tool

The scaling will be correct and just as it was when it was exported from your other application

#17

Here’s what fixes the scale problem for me.

  1. Import the Non-Sculpted (LowRez) into zBrush as a new Subtool.
  2. Go to the Tool Palette
  3. Unfold the Export Menu
  4. Write down Scale/X,Y,Z Offset values into an empty NotePad document.
  5. Activate the broken Subtool.
  6. Unfold the Export Menu, (Scale/X,Y,Z Offsets are most likely set to “na”).
  7. Input the proper settings (the ones you copied to the Notepad file).
  8. Export the broken Subtool (LVL1) into a temp Directory.
  9. Import it back into the LVL1 (to make sure everything works, if your Subtool disappears than your original Scale/XYZ settings were incorrect and you need to find the working backup with a correct scale and repeat the procedure).

Save the Notepad document, cause these settings keep resetting themselves randomly to “NA” from time to time.

#18

EdgeArchitect you rock,that worked a treat.
Your single post should be put as a sticky until zb get scale issued fixed.

#19

Thanks a ton, Edge architect,
and I agree with Kravit, This problem must have given sleepless nights to many like me.
Thanks a lot again to get this problem fixed.

#20

Edge… thank you.