I’ve got a symmetrical model (x) on which poseable symmetry works fine… however, if I subdivide it fails.
After subdividing and clicking “Smart resym (x)” I get “Full symmetry found”, but then clicking on Poseable symmetry, I get:
9.63595% Symmetry points found. Symmetry map was not stored.
Any tips or ideas?
Poseable symmetry is based on the topology of the mesh, not its physical symmetry so the two don’t necessarily agree. I’ve no idea why poseable symmetry should be OK before subdividing and not after, unless you’ve got a bit of masking somewhere which is causing uneven subdivision.
Apparently this turned out to be a topology problem with just one of the polygroups in the mesh.
Here is the polygroup in question (split from the full mesh):
… at lowest subdiv, Zbrush finds full symmetry on this and will allow poseable symmetry – but you can clearly see the problem.
Smart resym shows full symmetry found, Resym X shows 97.20994% symmetry points found. Neither operation moves the points, so that’s the problem. As soon as you subdivide, it won’t map poseable symmetry.
The only way to fix this is to Mirror and weld X.
The only thing I don’t like about using mirror and weld is what it does to my UVs/texture map – but I’ll use another thread for that.
Is it essential to use poseable symmetry? As your model is physically symmetrical you could pose after completing the sculpting.
Marcus,
Is it essential to use poseable symmetry? As your model is physically symmetrical you could pose after completing the sculpting.
No, I guess it’s not really essential… but I’m experimenting with some different workflows, and I think poseable symmetry will be quite handy – for example to tweak certain symmetric details after posing.
As I said, mirror and weld solves the problem in this case. It was just odd that this ONE polygroup in the mesh was affected by this weirdness (the mouth).
btw… this was an imported MakeHuman .obj basemesh which should have been totally symmetrical when I exported/imported. I’m going to go back and see if this is a MH geometry/topology problem or if I screwed up somewhere (likely).