Problems importing obj's from zbrush into max for morph targets

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Old 02 February 2006   #1
Problems importing obj's from zbrush into max for morph targets

Hey Everyone. Ive been having problems taking my morph targets that i morph in Zbrush and exporting back out to Max.

I modelled the head in Max cloned copied the head into an editable poly. Esported it out as an obj. quads 6 digits etc etc. Import it into zbrush and morph it. Fine then export it out as an obj. Import it into max. it comes into max fine except its rotated 180 degrees on the y axis in the front view.

I convert it from an editable mesh to edit poly and add it to the morph target list then when i morph it it turns inside out and shrinks and stretches and rotates along its y axis. Ive tried many different ways to import it and it always does this

HELP
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Old 02 February 2006   #2
more likely than not your import/export settings out of zbrush and max are not correct for your .obj

also fix how your model is imported into zbrush under the preferences importexport

I set mine to flip on x and z on both import and export. I have seen other people do it other ways, but it has worked for me on every mesh I have tried for max and maya.

That way it will import and export rotated correctly.
 
Old 02 February 2006   #3
Thanks Eric. I appreciate the input

But i think the problem lies in Max's obj exporter in Max 8. I actually tried exporting the head out of max and then reimporting it into Max without taking it into zbrush and using it as a morph target and it did the same thing. I tried a DXF and it did the same thing except not turning the polygons inside out.

I talked to a buddy of mine on the Autodesk beta testers and he is very suspect of the obj exporter. I also tried it in Max 7 and it worked fine except it would move its pivot. but it morphed fine. So I think it might be a bug in Max 8's exporter

Anyone else having these problems with the Max 8 exporter chime in and we can let autodesk know.

plus when is zbrush going to support 3ds export formats
 
Old 02 February 2006   #4
its your settings, trust me, unless your mesh is messed up really bad, I have exported and imported objs from max to zbrush and used them as morph targets in max 8, hundred of times


mess with your settings on max8 .obj export.

make sure # of Digits is set to something like 6

make sure compress numbers and relative vertex numbers are turned off.
 
Old 02 February 2006   #5
Thanks

I guess it is a mesh problem,

i just did what you said with a max sphere. took it into zbrush reexported it and brought it into max and it worked fine. but i tried it again with the head and it still does it. Is there anything i can do to the mesh to salvage it. It works perfectly in max when i do morph targets in max. I made sure all the verts are all welded everything is fine. Could it be that i originally modelled it in max 6.
 
Old 02 February 2006   #6
You might want to peep this tut out. The workflow is from Poser to ZBrush and back but it explains how to import export out of zbrush for morph targeting:

http://www.southerngfx.co.uk/genera...orphtargets.htm
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Old 03 March 2006   #7
No really I think it might be a problem with the exporter

I've just spent 2 hours trying to fix a very simple (160 poly model) for export into z-brush from MAX8. Nothing I or anyone else i asked does seems to work ( the polys are always flipped). I've made lots of models in zbrush by exporting from MAX7 and never had a problem I couldn't fix...

It does look like the MAX8 exporter my be broken in some way.
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Old 03 March 2006   #8
you could try reset xform in max
 
Old 03 March 2006   #9
Originally Posted by eblondin: you could try reset xform in max


Dude I've reset the X-form, I've flipped it mirrored it, exported it as 3ds file, and re-imported it, then exported as an obj file to z-brush,

the DFX version of the model isn't flipped when you import it into z-brush (although all the quad polygon are trashed)...... but if you load the DFX file into max and then exported it is flipped.

as a last ditch i imported the obj file into maya the re-exported it to z-brush and it's still broken.

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my articles and MAXScripts... www.designimage.co.uk
 
Old 03 March 2006   #10
Sorry to hear your having a problem Ken, but i'm glad to see i'm not the only one. Its very frustrating.

I downloaded the zbrush PDF on how to prep models and export out of max manual. It might help you. I haven't had a chance to try it since i have had to resort to doing morph targets the old fashioned way.

I did try it out of 7 and it did work though.
 
Old 03 March 2006   #11
i would be happy to take a look at it if you want to send me the .obj
 
Old 03 March 2006   #12
Thanks Eric thats very nice of you

Where can i send it.
 
Old 03 March 2006   #13
ericblondin@hotmail.com or ftp it and link me
 
Old 03 March 2006   #14
Just sent it

thanks again Eric
 
Old 03 March 2006   #15
hmm didnt seem to get it, not in my junk mail even,

I wouldnt mind taking a look at yours either Ken T
 
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