How to make a CAD model sculptable in ZBrush - ZBrush Live

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 From:  bisenberger
8385.1 
In Paul Gaboury's ZBrush Live - Did you Know That - Episode 3 (on Youtube), he shows how to polygroup a CAD model for use with ZRemesher to make it sculptable. Starts around 39:08.

EDITED: 22 Apr by BISENBERGER

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 From:  Frenchy Pilou (PILOU)
8385.2 
Cool trick that can be used also for SketchUp model! ;)
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Pilou
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 From:  futagoza (STEFAN)
8385.3 
Thanks for posting the video, much appreciated! I just purchased a license of ZBrush a couple of days ago
and i'm so happy that i did. Zbrush is such an amazing piece of software and it performs really good on
my old iMac! I think MoI and ZBrush is the best software i have ever purchased! :-)

Regards
Stefan

EDITED: 22 Apr by STEFAN

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 From:  futagoza (STEFAN)
8385.4 
Hi Pilou and all,

Metin once mentioned that he uses Styles in MoI for Polygroups in ZBrush, which works also very well.

I did a quick test and assigned random Styles in MoI with Petri's script:

script: /* Assign random styles to faces and edges */ var styles = moi.geometryDatabase.getObjectStyles(); var breps = moi.geometryDatabase.getObjects().getBReps(); for ( var i = 0; i < breps.length; ++i ) { var brep = breps.item(i); var edges = brep.getEdges(); for ( var j = 0; j < edges.length; ++j ) { edges.item(j).styleIndex = Math.floor(Math.random() * styles.length); } var faces = brep.getFaces(); for ( var j = 0; j < faces.length; ++j ) { faces.item(j).styleIndex = Math.floor(Math.random() * styles.length); } }

which you can see in picture 1.

Then in ZBrush under Preferences Import Keep Mats as Groups checked and in ZRemesher Keep Groups checked.

The quick test result you can see in Picture 2 and 3. For MoI export i used triangles only.

Regards
Stefan










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 From:  Frenchy Pilou (PILOU)
8385.5 
Excellent!
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Pilou
Is beautiful that please without concept!
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 From:  PaQ
8385.6 In reply to 8385.5 
An other method is to export your mesh with 'weld vertices along edges' disabled.

Then in Zbrush :

- Polygroups /Autogroups
- Geometry / Modify Topology / WeldPoints

Then you can use Zremesh with Keepgroups activated (no smoothing) like in the video posted.
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 From:  futagoza (STEFAN)
8385.7 
Hi PaQ,

thanks for your tip, much appreciated!

Regards
Stefan
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