weighting problem in maya

juguefre

Hello.

I have 1 vertex that don't allow me to paint weights, I can paint weights in that one but as soon as I change to another bone or change the manipulator it returns to cero value..... I did mirror to the weights using the "mirror skin weights option" in maya and every thing is ok exept that vertex.....all the vertex weights are mirrored correctly but this one is not.


Can anyone help me with this problem?

should I upload images?

juguefre

Ok maybe my english fails me really bad so here its the problem in images

this is the vertex in the component editor window


This is the vertex in the paint skin weights tool


now the vertex wieght painted


any kind of operation performed after(in this case another joit/bone selected)


and back to the beginning


This is completely annoying, is the only vertex in the whole mesh doing this.....

Please help.......

fade1

always hard to say, as there are so many things that could be the origin of the problem. vertex weight can be locked, too many influences, etc..
i would try to manually weight it: select vertex, go to component editor, go to smooth skin tab and manually type the weight in. see if this works.

juguefre

@fade1 thanks man, I tried that before but didn't accomplish anything.....check this




Those are 2 different vertex the second one have a bone assigned but the first one ( the one with the problem have none)....
is there anyway to assing a bone to that vertex in the first image???

fade1

strange. but i had problems like this, when bone influences where to far away for mayas auto-weight. but i could edit it via the component editor..
try this: select both vertices and then go to the component editor. now you might be able to add an influence value for that unweighted vert.
or try the weight hammer on that vertice. or you could try to copy weighting on that vertice.

gray

juguefre wrote: »

I tried that before but didn't accomplish anything.

try to select 2 vertices. in the component editor the normal vertex should show all the joints. now pick one of the joints and type 1.0 into the column for your problem vertex. that should have some effect and assign weight to your problem vertex. does that work?

juguefre

Oh that makes so much sense and I really felt it was going to work ....until I did it and fail....

this right before pressing enter


and this is right after hitting the enter key


thank you both for the help, have any more ideas about this problem?

juguefre

fade1 wrote: »

or try the weight hammer on that vertice. or you could try to copy weighting on that vertice.

weight hammer? sorry man I don't know how to do that...well in fact I would love to know how to copy the weight from one single bone or in this case one single vertex.....

What I did was a mirror skin weights and the other leg is completely ok, the whole mirror is ok, everything but this vertex.....

gray

select your problem vertex.
enter paint smooth skin weights tool.
select any joint.
set brush opacity to 1.0 and value to 1.0.
press flood.

???

juguefre

@gray no man it goes back to cero again once I do something else......also I can't do the smooth at 1 value but did the flood in both tools(smooth and replace) and didn't work with any of those.....

gray

select your object.
enter paont smooth skin weights tool.
change Mode: to select.
select your pain in the ass vertex.
change Mode: back to paint.
click weight hammer next to the Tools:.

if that dos not work then i would dupe your joints and your model. make sure they have no stray nodes attached. and set up a new skin deformer. then do a copy weights and see how that works. i suspects it is local to that specific deformer and rig and the problem will not show up on a clean deformer.


there are other things you can do but they are more complicated and may involve scripts from creative crash etc.

juguefre

OH damn.....nothing.... what should I do to "dupe" my joints and model?.....

fade1

just one more question: are there verts on the position?
what happens if you detach your model and rebind it. is the weighting still missing?

juguefre

FIXED!!!!!! oooh like 6 hours trying to fix this and was really simple......

just duplicate the model, delete history in 1 of them, bind that skin, selec the other model and then the newly bind model and copy skin weights....right after fix the annoying vertex and is done.......so simple but I never did this before.....

juguefre

Thanks fade1 and gray is good to have some help when you are in throuble.

juguefre

fade1 wrote: »

what happens if you detach your model and rebind it. is the weighting still missing?

as a matter of fact that was the key, I delete the history and rebind it and after that the vertex worked again.............but what caused the problem in first place?

fade1

probably soemthing in the history of your mesh.
if you have your old file, select the mesh and go to the attribute editor. there are numerous tabs there, some of them history nodes. my guess is, some of them might clash with your edits.
i always try to delete history before i bind a mesh...