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color print, preview is showing wrong mapping [message #61913] Tue, 12 February 2013 23:17 UTC Go to next message
avatar celso  is currently offline celso
Messages: 13
Registered: January 2011
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Junior Member
Hello!

I am trying to get this model printed.
It was hard to get the file to shapeways without getting errors.
Know the file is finally there but the texture on the preview model looks wrong.
At firs I was thinking the uvs got flipped some how, the original file was created in zbrush and it always flips the uvs.
But it does not appear to be the case, I flipped the texture in every way possible and the preview still showing wrong.

The textures are showing fine inside meshlab and zbrush. and has to be flipped in both axis to display right in 3d studio max.

How should I proceed ?

Thanks
Celso

Re: color print, preview is showing wrong mapping [message #61914 is a reply to message #61913 ] Tue, 12 February 2013 23:21 UTC Go to previous messageGo to next message
avatar celso  is currently offline celso
Messages: 13
Registered: January 2011
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Here is a print-screen showing what i mean

Re: color print, preview is showing wrong mapping [message #61933 is a reply to message #61914 ] Wed, 13 February 2013 06:31 UTC Go to previous messageGo to next message
avatar stop4stuff  is currently offline stop4stuff
Messages: 3111
Registered: June 2010
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Shapie Expert
tandard analysis in NetFabb shows there are 11 shells that make up the model - eg, there's one seperate shell in the left hand that's not connected to anything. The disconected shells* that are within a solid shape are removed by Shapeways MeshMedic when the model is processed at upload time. Removal of the shells causes the UV mapping to go awry.

*By disconnected, I mean disconnected from the 'outside world'. Hollow space needs a connection otherwise it is just a void that gets filled.

Paul




Re: color print, preview is showing wrong mapping [message #61958 is a reply to message #61933 ] Wed, 13 February 2013 15:03 UTC Go to previous messageGo to next message
avatar celso  is currently offline celso
Messages: 13
Registered: January 2011
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Thanks a lot for helping Paul.
I usually use netfabb for fixing the model, but was loosing the uvs true it.
But believe or not the solution for my problem was way simpler than i thought.

I just had to uncheck the Color option when exporting and worked just fine!

Thanks again

Celso

Re: color print, preview is showing wrong mapping [message #66043 is a reply to message #61958 ] Fri, 12 April 2013 04:10 UTC Go to previous messageGo to next message
avatar robertbonenfant  is currently offline robertbonenfant
Messages: 14
Registered: September 2012
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Cel -
How did you fix it - Im trying to print my Wow Guy
It looks perfect in 3Ds Max but in ShapeWay the whole texture is way off
Face is down near the legs
Any Advise ??
Re: color print, preview is showing wrong mapping [message #66153 is a reply to message #66043 ] Mon, 15 April 2013 17:07 UTC Go to previous messageGo to next message
avatar lensman  is currently offline lensman
Messages: 1546
Registered: December 2009
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I don't have ZBrush in front of me at the moment so I'll try and answer that for you... When using the plug-in 3D print Exporter there is a button for "Advanced" options. Click it and a whole bunch of other buttons unroll below. There is one titled "Colors". Click on it to turn it off...

Having said that whenever I've had this problem I'm pretty sure that didn't solve it. Maybe I never tried that. I've always had to load the ZBrush texture file into a painting programme and flip it (left to right) before putting it into the ZIP file.

Oh, and another thing, the JPG that ZBrush exported (in newer versions) saves the files as JPEG which doesn't seem to be recognised by Shapeways, so I always export it now as a PNG.

Let me know how you get on.

Glenn

[Updated on: Mon, 15 April 2013 17:08 UTC]


Glenn ------ My Website Third Dimension Jewellery
Re: color print, preview is showing wrong mapping [message #66156 is a reply to message #66043 ] Mon, 15 April 2013 17:17 UTC Go to previous messageGo to next message
avatar celso  is currently offline celso
Messages: 13
Registered: January 2011
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Sorry for the waiting,

For me the problem is i was loosing all the uvs when trying to fix the model on netfabb

For printing on color you must export the file as WRL

to keep the uvs in place and fix some small problems you have to use meshlab instead of netfabb.

and if you are using zbrush you must convert the jpeg to jpg, and after you do you have to oppen the wrl file on a text editor and change the jpeg to jpg there too.

if the model have some small problems shapeways uploader will probably fix it on the go and keep the uvs.

Hope this helps,

Thanks
celso
Re: color print, preview is showing wrong mapping [message #66157 is a reply to message #66156 ] Mon, 15 April 2013 17:18 UTC Go to previous message
avatar celso  is currently offline celso
Messages: 13
Registered: January 2011
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Junior Member
and remember to flag off the color option on mesh lab when exporting, it will conflict with the uvw

 
   
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