Imported obj Center Point Issue. Answered.

[system]

Hi guys, I’m having a slight problem when importing my characters head in order to do some blendshape modelling. The problem is that once imported the characters center point isn’t where it was while in maya and as a result the x symmetry doesn’t seem to be working properly. I searched for a solution and found this:

I imported an OBJ from another application and the scale and/or offset has changed! What do I do?

Original Question:
"Problem is when exporting something (eyes for example) to ZB3 to add to a body, ZB3 offset the objects and slightly scales them up. Any ideas how could that be fixed or what I’m doing wrong?
Answer by Aurick:
"The solution is VERY simple.

1. Import the body
2. Press ToolClone
3. Import the eyes
4. Select the body
5. Append in the eyes

Here's why it works: Whenever you import a mesh, ZBrush scales it to a specific size in ZBrush units. It also places the object's center point at the object's geometric center. This is all regardless of what scaling or positioning existed in your other app. Every import gets this treatment. But if you clone your first import, ZBrush looks at the resulting model as a special case. It no longer simply imports a new mesh and scales it as per the previous paragraph. Instead of scaling the new import relative to ZBrush's rules, it scales the new import relative to the original import. So now when you append the subtool, the new model is scaled and placed exactly right relative to the rest of the figure. One note: This will only work for objects without multiple subdivision levels. So you should do the cloning and importing first thing after importing your model." - Aurick

I know it’s not quite the same as this is with regard to separate subtools being imported individually but I got the impression that it was the same problem.

Is it simply the fact that now that the form is no longer symmetrical (due to the hair), Zbrush is just making as good a guess as possible as to where the center line is? Any help would be much appreciated.

Here’s an image of the problem I’m having:

[zber2]

Not quite sure what your asking here. Do you want to set the face x symmetrical?

If you do, then do the following.

Snap to a front view and zoom in on the face a bit, say at the tip of the nose. Click on Transform > C.Pivot button so it is grayed out. This will clear the current pivot point. You know where the center line is on the face so the cursor will snap to a point on the center line. Hold down ‘Shift’ and click once on a center point. Now go to Transform and click S.Pivot button to set the new pivot point. You should now have the face on x symmetry.

[system]

Thanks a lot! Doh! I was so caught up in the idea of the problem being with the import that it didn’t occur to me to just change the center point within ZBrush!