For the UV's make sure in Zbrush in the Export options in the Tool Panel
you have 'Txr' turned on.  It won't export UV's with that turned off.  Also
I normally have 'Mrg' on too or the UV's will be separated

On Sat, Dec 6, 2014 at 10:35 AM, Orlando Esponda <[email protected]>
wrote:

> Are you sure is the vertex order that is changing? or just the samples
> order?
>
> Andy's description and solution seems to be the best one. I would try to
> export from softimage as obj and import again to softimage. The export this
> new mesh and replace the base mesh in Zbrush.
>
> If this is too much, maybe you could try to fix the UVs manually
> http://vimeo.com/67783125
>
>
> On Sat, Dec 6, 2014 at 10:35 AM, Sebastien Sterling <
> [email protected]> wrote:
>
>> Might it be a problem with the app link ?
>>
>> i notice it to happen with layers as well.
>>
>> On 6 December 2014 at 14:41, Andy Goehler <[email protected]>
>> wrote:
>>
>>> I’ve noticed this behavior post Softimage 2010 releases. Where with the
>>> OBJ exports the vertex order is not preserved. It caused us many headaches
>>> and countless numbers of redoing UVs. Like you I have nothing reproduce
>>> able, however your chances of the bug increases when you mirrored the mesh
>>> before. It’s odd — I’ve advised my team to export to .OBJ and reimport
>>> before rigging and UVing. It’s a Softimage bug, not ZBrush.
>>>
>>> Nowadays, I just import both meshes into Houdini and use the Match
>>> topology SOP. Bingo.
>>>
>>> Andy
>>>
>>>
>>> On Dec 06, 2014, at 11:28, Sebastien Sterling <
>>> [email protected]> wrote:
>>>
>>> Ive noticed now a couple of times when sending a mesh back into
>>> sofrimage, that
>>>
>>> the uv's get erased or that the vertex order, or ID is different, often
>>> this seems to
>>>
>>> happen regardless of what degree of manipulation i want to effect. I
>>> can't seem to
>>>
>>> find a reocuring reproducible source for this, with the possible
>>> exception of dividing
>>>
>>> the mesh, adding a sub div level, something you can do in mudbox without
>>> any issues.
>>>
>>> *Is there some guard, some box I can tick to tell zBrush to preserve
>>> vertex order ? or at the very least will prompt me if a perticular
>>> manipulation is going to break it ?*
>>>
>>>
>>> Many thanks and a good weekend to you !
>>>
>>> - Seb
>>>
>>>
>>>
>>
>

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