Set local rotation axis

[nickyliu]

Yo ~ haven’t posted for so long … My question is trivial but I still can’t get it after searching and reading for some time.

I want to set specifically the local rotation axis of a joint, after running “orient joint” for the whole chain.

In my case, the LRA of the wrist joint will look at the first finger chain I parent after running “orient joint”. Now I just want to set it to something like looking down from the shoulder to the wrist, so the I can parent a shape to the wrist joint and looks good. I can do this rough manually but I want to set it using mel. Just wonder someone may know. Thx.

[Narratorway]

This sounds like a question I asked a while back and this was the response I got (you mentioned mel, so I’m assuming your using Maya).

Go into component selection mode and select your LRA. Then just type this in the command line:

rotate -r -os x y z
-r = relative
-os = object space
x y z being the rotate values of the new position of the LRA.

There’s lots of flags you can put in to chose how to rotate your LRA, I just prefer those two as it’s easier for me to work on in my head. Typing in the channel box will just rotate the joint as Maya thinks you have that selected.

[nickyliu]

It works when you know the specific value to turn locally. But what I’m trying to do is to copy LRA from one joint to another. See picture attached.

[ogbonna]

It works when you know the specific value to turn locally. But what I’m trying to do is to copy LRA from one joint to another.

Hi,
//suppose transfering local rotation axis from joint1 to joint2
string $from = “joint1”;
string $to = “joint2”;
float $axis[] = getAttr ($from+".rotateAxis");
rotate -ws $axis[0] $axis[1] $axis[2] ($to+".rotateAxis");

Hope this is helpful.

Regards,
Nate

[nickyliu]

rotate -ws $axis[0] $axis[1] $axis[2] ($to+".rotateAxis");

Sorry, the -ws flag doesn’t work, as I expect it to work someway in worldspace.

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