ZBrushCentral

Rigging with Transpose Master-Distorted Mesh when in Extreme Pose (ZBrush 4R6)

ZBrush Usage Questions
#1

This is my first attempt at rigging in ZBrush and I have no doubt the problem is me.

The attached images show the portion of the rig I built in the boot.
When I bind the mesh to the rig and test an extreme pose of the legs by rotating the hips, I get the boot laces moving away from the boot and the boot distorting/twisting a bit.

I have tried to added spheres and scale down the spheres but nothing seems to change the problem.

  1. Can someone please advise me of what I have done wrong?
  2. How do I fix the rig in the boot to not distort?
  3. Is there a way to delete a sphere from the end of a chain besides undo?
    Sometimes I need to delete one that is not the last created and it is
    painful to delete good parts of the rig to remove a bad section.

Attachments

boot-rig-frt.jpg

boot-rig-side.jpg

rig-test-1.jpg

rig-test-1-close.jpg

#2

  1. & 2) ZSphere rigs can be tricky with some meshes. You may find that the rig works better with fewer ZSpheres or you may need to add more to control them mesh - it’s really down to trial and error. Also, when you pose the rig be careful that you don’t twist the chain.

  2. You can delete ZSpheres by holding Alt and clicking on them (when Draw mode is selected). If the ZSphere is in the middle of a chain the two either side will be joined with a new link.

#3

Adding spheres helped the boots but did not fix it entirely.
It seemed that joints that were not 90 degree intersections caused problems beyond them.
The thing that helped the most was to isolate the root sphere between the hip joints and top of the pelvis so that the spheres either side of it never moved. It made posing a bit of a pain but it did help.

Now the hands are giving me fits.

Is the size of the sphere supposed to affect its influence radius?
Is there a way to set the fall-off from the spheres?

Thanks

#4

No, as far as I know, the size doesn’t make any difference; it’s the proximity to the mesh that controls it. There’s no way to control the fall-off.