Blendshape error! arghhhh... stress!

[ba8533]

Hi, I hope you can help me out here

When I used blendshape (Using local origin), why does the target (main) object translate as well???? I work with maya blendshape before but this type of error never occured to me until now. It usually occurs when I go back and forth from subdiv to polys. I tried deleting the history and freeze transformation but the object still moves/translates (it supposed to be still). Yes, I used LOCAL origin. It is not supposed to move in local origin right.

PLEASEEE help!!! Maya seems to hate me

[stevesayer]

Try looking at the position of the target object, and main blending object (with the blend shape node) when all their transforms are reset (0,0,0,0,0,0,1,1,1). If they are at different positions to each other, then thats where your problem lies. NEVER freeze transforms on blend shapes unless you know that the target is in the exact same place as the one you're blending to. If you do, then when you change the slider values, you'll notice the object move across to where the target is on a per-vertex level.

The only way around this is to put your target shape in the exact same place (vertex-perfect) as your master shape and then freeze both of them again.

[ba8533]

In reply to:
Try looking at the position of the target object, and main blending object (with the blend shape node) when all their transforms are reset (0,0,0,0,0,0,1,1,1). If they are at different positions to each other, then thats where your problem lies. NEVER freeze transforms on blend shapes unless you know that the target is in the exact same place as the one you're blending to. If you do, then when you change the slider values, you'll notice the object move across to where the target is on a per-vertex level.

The only way around this is to put your target shape in the exact same place (vertex-perfect) as your master shape and then freeze both of them again.

yep I've tried that method before, but the object still translates . I'm worried that this may be the cause:

1) I make the objects using subdivision surface (from the same master template)
2) then I tesselate to polygons and set my blend shapes from there.

I did this before but nothing like this occured. Sometimes the polygons even 'crunches up' when translating as well, even tho the surface have the same topology. I figured out how to get rid of the second problem, I exported the polys to dxf format and import back to Maya, the problem disappeared but It is still translating.

Oh yeah, the target object translates to a random position. not to the blendshape object... really strange...

Any help would be appreciated

[ba8533]

OK. I'm getting really really really really really frustrated. So I included the file for those who are interested...

http://www21.brinkster.com/susantio/problem.mb

[waboflex]

Well there's some strange stuff going on and I think it's due to additional transforms coming from the base object being grouped with a translation on that group.

Try this: delete the blendshape first, translate the base object back to 0 in X instead of -1, then ungroup or unparent it. It now has a translate X of 7.351, so freeze it's transforms and delete history. Create a new blendshape and Bingo! It works.

As a general rule of thumb, try to keep targets out of hierarchies with transforms, or if you do need them hierarchied it should work okay as long as all targets AND the base are at the same level of the same heirarchy.

Have fun.

Wabo.

[stevesayer]

In reply to:
Well there's some strange stuff going on and I think it's due to additional transforms coming from the base object being grouped with a translation on that group.

Try this: delete the blendshape first, translate the base object back to 0 in X instead of -1, then ungroup or unparent it. It now has a translate X of 7.351, so freeze it's transforms and delete history. Create a new blendshape and Bingo! It works.

As a general rule of thumb, try to keep targets out of hierarchies with transforms, or if you do need them hierarchied it should work okay as long as all targets AND the base are at the same level of the same heirarchy.

Have fun.

Wabo.

Yes, what wabo wites is a very easy way to solve your problem. The node above your shape in question needs getting rid of for now. I just unparented the shape, put both meshes in the scene to 0,0,0 and then froze them and re-applied the blend shape, it works fine now....

see http://members.tripod.co.uk/peoplesfactory...oblem\_solved.ma

Hope we've helped you

MrBungle

[ba8533]

Thank You thank you thank you!

Sorry for the late reply but I greatly appreciate all your help

It works fine now, whew, i cant stress this enough. thanks!