ZBrushCentral

Holes in mesh after using GroupsLoops [Answered]

ZBrush Usage Questions
#1

Hello,

after a friend of mine is doing really awesome stuff with ZBrush (imho :wink: ), i’ve started to learn ZBrush as well. So i’m totally new to everything ZBRrush or 3D.

I’ve started with a simple “Headtutorial”, but no i stuck at the eyes, mouth and so on…

Ive grouped the eyes, ears, the nose and the mouth,

and now i wanna group these loops, but it looks like this:

i’ve tested it out with a simple form, there is no problem, so my headmesh seems to be the problem.

Any ideas? And sorry if this is such a stupid question, as mentioned i’m totally new to this stuff! :slight_smile:

Thanks in advance, vicegold

Attachments

hole_1.jpg

hole_2.jpg

hole_3.jpg

#2

Are you attempting to generate all of the loops at once or are you trying them one at a time?
Set up just a polygroup for the eyes and group loop that, then try the nose, etc.

Also, what happens to your mesh when you give it a subD level? Are those actual holes in the geometry or is Zbrush simply displaying the faces incorrectly?

#3

I’ve tried to loop just the mouth, it’s the same! As well with the nose and the eyes!

When i divide the model in subdivisions it looks like this, so these blackholes are actually holes, right?

hole_4.jpg

#4

Hmm. I’m at a loss. I can give this a go tomorrow when I’m sitting at work wasting time and see what I come up with. Hopefully someone will get back to you before then though.

#5

Could you post the mesh here? The only reason that I can think of for this happening is that there’s a problem with the mesh.

#6

http://dl.dropbox.com/u/160004/zbrush/head_subd_2.ZTL

#7

Thanks. Your mesh does have a stray vertex but that still didn’t cause any problems for me. I didn’t get the holes. I’ve attached the revised mesh.

#8

Thank you marcus_civis for the updated mesh!

Never heard of a stray vertex (sorry for that), is a stray vertex something like this? It looks a little bit incorrect for me. And how can i avoid or fix it?

hole_5.jpg

And is there a stray vertex in the face as well?

#9

No, that is simply a vertex that is connected to more than four edges, and is often called a pole. Although you don’t want too many of them, sometimes they are difficult to avoid.

A stray vertex is a point that is out on its own, and is not connected to any or enough edges to form part of a polygon. You won’t be able to see a stray vertex but if you press the Tool>Geometry>Check Mesh button ZBrush will tell you if you’ve got any.

#10

Thanks again, marcus_civis! I’ve just resculpted the head, and everything was okay. Don’t really get it what’s the problem, but now everything is fine. Thanks to all posters!