Hi.
Is there a way to fill holes left by missing polys? I accidentally deleted some polys in a low res mesh and I wondered how I might re-instate them.
Thanks!
~S.~
Yes, as ancomic’s video shows you can do it fairly simply. The only drawback is you will lose your groups. For your mesh there’s not even any need to join points:
- Select the ZSphere tool, draw on the canvas and enter Edit mode if necessary.
2.In the Tool:Topology submenu, press Select and choose your mesh from the popup.
3.Press the Tool:Topology: Edit Topology button and then set the Tool:Topology:Subdiv slider to 1.
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In the Tool:Adaptive Skin submenu, set the Density slider to 1 and the IRes slider to 1 also.
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Press Tool:Adaptive Skin:Preview (or hotkey ‘A’) to preview the mesh. The holes should have been filled.
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Press Tool:Adaptive Skin: Make Adaptive Skin and select the new ztool (called ‘Skin_ZSphereCopy…’) before continuing.
Hi.
Thanks for the responses. I forgot to mention it is no longer a zsphere tool. It is a polymesh. Any thoughts? I could take it into Maya but I was hoping for a Zbrush solution.
Thanks!
~S.~
The method we’re describing is for a polymesh tool. It uses the retopology features of ZBrush 3, where you start with a new zsphere tool drawn on the canvas, then select the mesh you want to work with. Sorry I didn’t make that clear.
Thanks, Marcus.
Thanks, Ancomic.
I appreciate the patience.
When I go to ‘Topology’ and hit ‘Select’ I am only given a choice of one tool (Star) the rest of the palette is blank. I am in ‘Edit’ mode because without it, the Topology/Select button is unavailable.
~S.~
You need to have the mesh that you want to fix loaded into ZBrush. Is it? If it is, try making it a polymesh, then load the new zsphere tool and try again.
Hi, Marcus.
When you say ‘loaded into Zbrush’ do you mean saved in the Ztool sub-directory? It is saved as a polymesh 3D in the Ztool sub-directory.
~S.~
Marcus,
I figured out the loading part and your instructions worked perfectly for the head holes. I am, however, left with all these body holes now. Do I need to hide everything but the head before applying this method?
I made a turntable movie but cannot upload it to the forum. The format (.zmv) is not accepted.
~S.~
Marcus,
I tried hiding everything but the head and applied your recommendation but I seem to have lost the body altogether (no worries. I saved a backup). In other words, the method worked (in that the head holes were filled) but I could not get the rest of the body to re-appear.
I have attached the model file for your esteemed review.
~S.~
Hello SNARK,
I don’t know why you were getting that result - I got the same and couldn’t get rid of it. Anyway, I managed to fix it and keep your polygroups. Basically I separated the head from the body, retopo’d the head and then added it back onto the body using the Tool:Geometry:Insert mesh button.
HTH,
Hi SNARK,
My new ZScript txt File download…
http://www.zbrushcentral.com/zbc/showthread.php?p=378432&posted=1#post378432
Hi, guys.
Thanks for the unbelievable support. I know you both must have real jobs that require your attention 10-18 hours a day, and to have time to respond to issues such as mine makes your day even longer. Anyway, I appreciate the response and will examine your suggestions up close before reporting. I want to be able to solve this problem in the future on my own. I was just beginning to understand Z2 and now Z3 (with all its wonderful advancements) has set me back a little. So, thanks for the input! Cheers to the Z3 community and this wonderfully responsive forum!
~S.~
p.s. - How do I post a turntable movie?
Hi, Marcus. Hi, Ancomic.
Thanks for all your attention.
Marcus, I appreciate your re-assembly of my mesh but I was unable to re-create your method in that I couldn’t figure out how to separate the head. I did, however, develop a pipeline for fixing the problem in Maya: First, I used ‘Group Visible’ to make a single mesh (otherwise you get a bunch of unconnected pieces in Maya) and exported an .OBJ to Maya. I then entered ‘Edge’ mode and used the Edit Polygon command ‘Fill Hole’ to close the holes. Then I ‘Deleted All By Type - History’ and exported back to ZBrush. In ZBrush I re-created my groups and saved the fixed model as a ZTool.
However, I seem to be having a subdivision issue. I wonder why there is so much loss of volume when sub-dividing? The first figure in the image is the repaired mesh with new groups after importing from Maya. The second figure is subdivision level 4 linked to a Morph Target of the original low-res mesh. The third figure is subdivision level 6 with the SMT (Smooth) button turned off. It maintains volume but, of course, there is no smoothing. Is this just the way things work or is there a way to subdivide, smooth and maintain volume? Or did something happen to the mesh during my Maya session? I have attached the new model file for review.
Also, I have a question about scale issues between ZBrush/Maya: Why are ZBrush meshes so huge when imported into Maya? Is there a way in ZBrush (as there is in Maya) to establish a calibrated scale of units that can insure the meshes appear at the same scale from program to program? Just wondering.
Thanks!
~S.~
SNARK,
To separate the head from the body of your model I simply hid the head and then used the Tool:SubTool:Split button to make it a separate subtool. I then cloned that to get a separate mesh.
The loss of volume you describe is a feature of subdivision: subdividing smoothes the mesh and smoothing reduces volume. There are ways around it; you might take a look at Marsyas’ Proprtional Subdivison script or mir-vadim’s CreaseDivide plugin uses a slightly different approach.
HTH,
Thanks, Marcus! You da’ best. One last thing: how do you post turntable movies (.zmv) ?
~S.~
You can’t post them directly on ZBC. Either zip them and include as an attachment (though there is a file size limit of - I think - 400KB). Or export them as a .MOV and upload to somewhere like YouTube, posting a link to that in your ZBC post.
Cheers,
Thanks, Marcus.
That SmartDiv plugin works great.
~S.~