With the DynaMesh Resolution set to 0 in the Adaptive Skin panel in order to disable DynaMesh completely and any Density subdivision levels used, when I try to make a local quad mesh patch via Zsphere and Topology, the result is a bowl shape that looks fine but is actually two identical meshes welded together along their border. I can’t even figure out how to just delete one side since masking ends up randomly losing some edge faces after I use masking to apply polygroups and then deleting one face. This doubled mesh ruins my ability to Project the result onto a mesh too, later, when I adopt a different workflow. Completely random glitches all over the place.
You can see here that if I apply the Inflate brush to the front, the back also inflates away from the front:
I tested this on 4R8 and it’s the same.
Perhaps it’s related to my base mesh? A simple indented sphere converted to a polymesh given the expected single sided quad patch, just like in all the YouTube demo videos.
…which upon Inflate brush application or Zmodeler deletion of a polygon shows one-sided results.
My original mesh does have holes in the back and bottom so isn’t closed. But closing those holes via Zmodeler and then Dynameshing changes nothing.
Even projecting a subdivided mesh ball onto my base mesh and trying that ball-like base mesh for the Topology patch doesn’t help. Same double sided bowl.
Even if I connect the two patches and add a wrap-around strip, it still gives a doubled mesh that inflates on both sides:
In some cases I get clean automatic polygroups from the creation of an adaptive skin so I can indeed delete one of the duplicate meshes by hiding and deleting a group. But then if I try to project the result onto my base mesh, I get absolute garbage:
So it’s not just the doubled mesh causing these artifacts later. Zremesher gives odd results along the edge and if I manually delete a few edge faces, artifact extra edges remain along the edge! They seem to be zero width faces I can’t zoom in to see, nor can repeated clicks of Zmodeler delete rid them.
So there’s something haunted in my base mesh or in the shape of it. If I try a patch on the Zbrush standard female head, all is fine and the result can be later projected just fine, since the patch is not doubled with bizarre edge artifacts that ruin projection:
Zbrush file of my original mesh and Topology patches:
https://linx.li/zsphere1.ztl
Well…if I just start over by deleting my Zsphere and making a brand new patch over the eye of my original mesh even with holes in it, it works fine just like YouTube demos. So there’s something haunting my original Topology grid, maybe doubled lines or one that doesn’t really connect?