ZBrushCentral

[Solved] Need help with Dynamesh where it is causing stretched polys

ZBrush Usage Questions
#1

I’m following the ZClassroom videos Environments with Seth Thompson and trying to recreate the lantern. I’m at the part where you Dynamesh the 6 dragons and the lantern top together. The lantern body is still a separate subtool.

My problem is that when I Dynamesh them, the result has some stretched polys (I’ve included before and after pictures).

As a test, I divided the mesh (dragons + lantern top) in half and separated them into two subtools so I could Dynamesh them separately. I then merged them back into one subtool and hit Dynamesh again so the two pieces are one. That seemed to work as I didn’t see any bad polys.

Any clues as to what is happening or how I can fix this without doing my workaround? I’m using version 4R6 P2, on Windows 7 with Intel Core i5 and 8 GB RAM.

Thanks.

Attachments

BeforeDynamesh.jpg

AfterDynamesh.jpg

#2

May be you can try to increase a little the resolution and deactivate the Project button in the dynamesh options

#3

I tried this. The result is much worse. Attached is a pic with resolution set to 2048 and Project button off.

Attachments

AfterDynamesh res2048.jpg

#4

Maybe you can duplicate and do an intersection?

#5

Are you talking about using the Remesh All with intersection or the Dynamesh And button?

If it is the Subtool Remesh All with intersection, I’m not sure if I did it right. I placed the original non-Dynameshed dragon top as the first subtool with the Add icon and Eye icon enabled. The bad Dynameshed dragon top was the second subtool with the Intersect icon and Eye icon enabled. There were no other subtools. Clicked the first subtool. Went down to Remesh and set resolution to 800. Clicked Remesh All. The result did not have the bad polys but a lot of the detail was lost like it was smoothed over and some connected polys like around the teeth. I did a Project All using the original dragon top as source and the new intersected dragon top as target which got most of the detail back but I would still need to fix the connected polys in tight places like between teeth, tongue, and dragon scales. This required more work than my original workaround but I’ll keep this in mind as an alternative workaround so thanks for the tip.

If it is the Dynamesh And button, I don’t know how to use Dynamesh And with two subtools.

#6

It almost looks like you have some holes in your mesh pre-dynamesh, or there is some stray masking going on.
Before dynameshing, clear mask, check/fix mesh integrity, and run close holes?

#7

I’m not sure how to check/fix mesh integrity. I clicked on Close Holes before running Dynamesh and still got the same bad result. There are no masks as Zbrush wouldn’t let me run Dynamesh anyway if there were any masks.

#8

http://docs.pixologic.com/reference-guide/tool/polymesh/geometry/#mesh-integrity

#9

Thank you Thor and Doug. Checking/fixing the mesh integrity did the trick. I was able to dynamesh the original dragon top with no problems.