Yes, the jargon here is terrible. Likely for legacy reasons. (Although I
can’t think of which ones exactly? I remember this being fuzzy way back in
Maya 4.0)
But, it isn’t true that the s hotkey puts a key on non-keyable attributes,
can you confirm?
1. Create cube
2. Make translateY, translateZ and rotateX non-keyable
3. Hit s
You should find all attributes in the channel box have a key, except for
those three.
But, as far as I know, only the s key respects this attribute. And the s
key is mostly a wasted keyboard shortcut. (How often do you intend on
keying every single keyable attribute?) More usable means disregards the
non-keyable state (perhaps for the better).
1. Shift + w still keys translateY and translateZ, regardless of their
non-keyable state
2. Right-click on rotateX to Key Selected still produces a key, again
regardless of their non-keyable state.
Some tools do respect the non-keyable state, like Edit -> Bake Simulation
and creating a new animation layer.
So, unlike the locked state the non-keyable state is more of a hint. Some
metadata that tools may choose whether or not to respect, with a slight
hint in the channel box for the animator that the attribute isn’t intended
to be keyed. With that in mind, one way of making a channel 100% unkeyable
is by making it locked, although that typically isn’t a practical use for
the locked state. Another is by making it un-*connectable*, since a keyed
channel is merely one that is connected to a keyframe node, like animCurveTL
.
I wasn’t able to find a way of doing this via cmds, maybe someone else
knows?
from maya.api import OpenMaya as om
cmds.file(new=True, force=True)
cube, _ = cmds.polyCube()
sl = om.MSelectionList()
sl.add(cube)
mobj = sl.getDependNode(0)
fn = om.MFnDependencyNode(mobj)
plug = fn.findPlug("translateX", False)plug.name()
fna = om.MFnAttribute(plug.attribute())
fna.connectable = False
cmds.setKeyframe(v=10, at="translateX") # Fail!
The API does sometime allow metadata like this to be edited without
actually being able to save it with the scene (e.g.
MFnAttribute.setNiceNameOverride), especially not for native plugs like
this one. But this does appear to save and load fine. This would make an
attribute truly non-keyable, whilst still allowing it to be *edited*
(unlike a locked attribute).
On Wed, 21 Jul 2021 at 12:55, Rudi Hammad <rudiham...@gmail.com> wrote:
>
> Hello,
> to make an attribute not keyable you can do it with cmds or mplug or right
> click 'make not keyable'. What this does is grey out the channel box, so if
> you select the node and set a key typing 's', the attribute is not keyed.
> So far so good.
>
> Now, this is what I find annoying. Many times when animating you just
> select the channel box attributes (so not the node) and type 's'. In this
> case even if it set not to be keyable, it will add a key, so it is not
> really unkeyable. So is it possible to make it 100% unkeyable?
>
>
> Side note: I find odd that the api uses the method MPlug.setKeyable() to
> hide and MPlug.setChannelBox() to make keyable. A bit confusing isn't it?
>
> R
>
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