Blend Shapes on bound geometry problem

[permich]

Hello,

I have a question dealing with blendshapes on bound geometry. The problem is that my blendshapes look fine until I rotate the skeleton of the bound geometry. For example, if I just take a sphere as my bound mesh, and make a blendshape of the top vertices moving up, then when I rotate the joints, the vertices still try to point upward in world space. At least this is what seems to be happening. I know they should just follow the geometry's local rotation.

From what I understand, this is a simple issue of changing the deformation order on that piece of geometry (please correct me if I'm wrong). I have read that you just MMB drag an item in the list over the item you want it to preceed. Currently, I have the following deformations, from top to bottom: Blend Shape (parallelBlender), Skin Cluster (skinCluster1), Tweak (tweak1), and Blend Shape (blendShape1). I have bound the geometry first, then applied the blendshapes.

The problem I am having is that every time I drag the Blend Shape (parallelBlender) down, it totally destroys the stack. The blendshape node is gone, as is the node creating the bind to the joints. What am I doing wrong? I am using Maya 5.0.1 btw. Thanks for any help you can give.

-Mike

[user_deleted]

Hi

I am not sure whether this can help or not since it is such an initial idea but while making your blend shape did you set it's origin to work based on the world or local ??

As you know if it is world it doesn't care about the geomtris local rotation .

Hope it worked

[joojaa]

Also the order of deformation plays role here... the blendshape should come before the bind not after. Just reorder the history.

[permich]

Thanks for both of your replies. I had the blendshape turned to local, which I have read is the way to go for editing a head. When I tried changing the deformation order, it deleted the blendshape and skin cluster nodes. I did have the blendshape set to parallel, which I believe caused the problem. Once I deleted the blendshape nodes and created them again as default, I was able to change the order in the stack with no problems.

Thanks again for the suggestions.

-Mike

[fernando-fracaroli]

I'm having a similar problem here, but do not get a solution.

I was looking for the tutorial in the highend3d's maya FAQ , i did all the things sayed in that post, but something strange ocurr.
i skinned the model, did the rig and the shapes to blend, the sets for the original shape and correspondent vertex in all other shapes, to be used to blend shapes.
Ok, the blend shapes works well. but when i move the entire body, in a group node, the head vertex where the blend shape modifies stay unaffected by the joints, the head remain in the original position, far behind the body, in the place where the character was skinned. I mean, everything works, but the character' head don't moves with the joints, it remain stopped blended with the blend shape.

Is this something i forget? i repeat the process with a simple 3 joints skeleton and a cilinder, skinned then and put the sets in original cilinder in their copy, and got the same problem. I move the joints, the cilinder moves too, but when use the blend shapes, the vertices i blended carries back, not following the joints.

Can anybody get me some advice?

thanx

3pod

[mattias]

Hello!
The easiest way to avoid problem is to always apply the blenshape before you skin! So just detach your skin, create the blendshape (you could just add one target now, the rest at any later stage, it don