Mesh extract in Zbrush

[RAMWolff]

If you do it in all one go then no but if you do a bit at time you can just use Ctrl Z to back up. If there is another way I'm not aware of it!

 

[Pendraia]

Make some use the Topology brush, you can direct your poly flow with it. It's how I learned to make concentric circles for the breast area of clothing. Here is a cool thing I found on line....

View attachment 18220 View attachment 18221 View attachment 18222

when you say topology brush do you mean the guidelines one? Because I use that a lot...but not as much as in that pic but sometimes close.

 

[Ken1171]

@RAMWolff I guess it's almost impossible to place the curves in one go, since we have to turn the model to be able to continue. I read somewhere that it was possible to edit the topo curves, but I can't recall where that info was. My hands are not as steady as the one who did the curves in the images you've posted. It appears he did all curves in 1 go. LOL

 

[RAMWolff]

Well if you notice the various anchors along the top of the nose I think it was many lines applied somehow. Not sure how that's done. I've not experimented with that for a while now. I just wanted to make concentric circles on the breast area and just turned on symmetry to get both done at the same time... THEN hit the ZRemesher button.

 

[Ken1171]

Yes, it's made of many separate lines, but each seem to be created in one go. In my attempts, I can't go very far before I need to turn the model around to continue. The curves are placed by projection, so you need to turn the model several times to be able to complete a curve that goes around the model. For example, that curve that goes around the neck.

In addition, whenever I made lines that cross over one another, the mesh tends to crumple at the intersections. That happens if I place an anchor at the intersections, but from the images above I can see we are not supposed to do that. Learning never ends! ^__^

 

[Pendraia]

With one of the curve brushes you hover until you get a red line and then you can continue...maybe this does the same?

 

[Ken1171]

Somehow I don't get the red line, but I can continue from the last anchor point, which has no curvature continuity with the rest of the curve.

 

[Pendraia]

I justtried and found that neither that or remesher give the red line but the topology brush is for creating extra mesh and the remesher helps when using Zremesher so two different things. Both are very useful though...

 

[Ken1171]

They are very helpful indeed. I just need to learn how to use them properly.

 

[Pendraia]

Me too...so many parts of Zbrush that I still need to learn.

 

[daywalker03]

Somehow I don't get the red line, but I can continue from the last anchor point, which has no curvature continuity with the rest of the curve.

Ken, I think I've seen Sixus1 do topological work with symmetry on, which helps somewhat with getting each line to go all the way around. However, he usually does not try to do these all in one go.

 

[Bonnie2001]

Retopology with symmetry on often doesn't work right, it's been a known bug for ages. The only fix is to retopo one side and mirror & weld when done.

 

[Ken1171]

Ken, I think I've seen Sixus1 do topological work with symmetry on, which helps somewhat with getting each line to go all the way around. However, he usually does not try to do these all in one go.

Pixologic has corrected this issue in Zbrush 4R8. Now we can continue to go around the model while keeping the line curvature. That's one of the new features they highlight on their demo presentation.

 

[Bonnie2001]

That's good to know Ken, thanks.

 

[Bonnie2001]

I've just tried retopo with symmetry in 4r8 and it is working like a dream. Thanks again Ken!