Hi there. I’m relatively new to Zbrush, but I am crash-coursing myself through making a few simple biped models, working off of Zspheres and concept sketching.
I’ve been working off of CannedMushroom’s biped tutorial for Zbrush 3.0
(http://www.zbrushcentral.com/zbc/showthread.php?t=53087) and another for concept sketching- but neither touch on the problem that I am having with Zspheres.
I set up the concept sketch in a Normals reversed Cube (as per this tutorial) http://www.zbrushcentral.com/zbc/showthread.php?t=50722
Make a new Zphere, and append the reversed cube as a subtool. It’s built facing the positive Z-axis etc; so I should be set to go. I can create the sphere model, but the subtool preview shows all of my joints “pinched” together.
The screenshot below shows the Zsphere setup and the adaptive skin preview.
http://www.rpi.edu/~jalbep/Zbrush/Zsphere_Problem01.jpg
http://www.rpi.edu/~jalbep/Zbrush/Zsphere_Problem02.jpg
As you can see, the mesh around the groin area is pinched badly, and conforms too closely to the sphere.
Through some trial/error, I’ve figured out that this has to do with how “big” Zbrush thinks that the Zsphere setup is. If I shrink a Zsphere down by a lot and then begin to add other spheres to it, the adaptive skin behaves more loosely, like it does in CannedMushroom’s tutorial.
All of my Zphere settings are at default. I haven’t touched any special settings.
Zbrush seems to have a lot of issues in general with no control over scale. Does anyone know how/why it’s behaving like it’s scaled up so high, and/or how I can tweak the way the adaptive mesh is calculated so that it behaves like it’s supposed to? (IE: in CannedMushroom’s Lesson 4 tutorial, where he has also not altered any settings).