ZBrushCentral

Regrouping a Polygroup?

ZBrush Usage Questions
#1

Hi, I have a question about regrouping polygroups;

Say you create a slice curve and it happens to hit another part of an object that you were not expecting it to or just didn’t see (off screen). The curve you created was very nice but you don’t want the other part of the slice to have occurred. Is there any way to repair the polygroup that was accidentally sliced without having to redo the curve?

Attachments

ZBrushQ.png

#2

To fix this, show only the purple grooup. Click on Auto Groups in the poly group menu, then show all, and hide all but the bits you want to be joined back together and click on Group Visible.

#3

It’s quite simple to correct that:

  1. Shift+Ctrl+click on the purple polygroup. This will hide the red polygroup.
  2. Holding Shift+Ctrl click on the large Current Brush thumbnail and select the SelectLasso brush.
  3. Shift+Ctrl+drag around the part of the purple polygroup you want to stay purple. The selection area will be green and when you release the mouse button the rest will be hidden.
  4. Shift+Ctrl+click on the visible part of purple polygroup. This will reverse the visibility so that now the red polygroup will be shown along with the purple part that should be red also.
  5. Press Tool>Polygroups>GroupVisible.
#4

Worked up to step 4… but shift + ctrl clicking just hides everything. (I think because the group counts as the entire piece?)

With that said, isolating the one group is good enough because I could just group it and then select the other parts and group visible. (By doing a group visible on the one piece and then clicking it to reverse the selection).

Thanks!

#5

I’m not sure how you managed to hide everything! Anyway, so long as you solved it. :slight_smile:

#6

Strange, for whatever reason the way I cut the object it made it hide all while trying to do that. It appears to have something to do with stray quads from the improper slice on closer inspection. Most of the time your posted method works… and actually I can force the hidden/visible swap correctly with a Ctrl+Shift+Drag so it shouldn’t really be a problem at all.

But yeah I had been doing some work following a video and I completely forgot how to manipulate polygroups well. I ended up making a really nice bezier on a piece but it cut into the geometry on another part of the object and I couldn’t figure out how to regroup the pieces I wanted so I ended up redoing the bezier. Obviously that’s not time efficient so I wanted to figure out if I made that mistake again how to fix it.

:+1:

#7

You might find it hasn’t hidden everything. You may just have a tiny poly group that you can’t see.