There could be a tone of answers to this problem but I think the : "What if
the number of commands you had in mind are many, or depend on too many
factors to embed into a plug-in?"
needs more explanation , because when I see you coming with
"createNode('transform')" , I'm indeed telling myself that you just need
maya.cmds
Le mardi 20 février 2018 12:00:01 UTC, Marcus Ottosson a écrit :
>
> Hi all,
>
> I’m looking to integrate undo into a series of commands made via the API.
>
> from maya.api import OpenMaya as om
>
> mod = om.MDagModifier()
> mod.createNode("transform")
> mod.doIt()
>
> Maya is very kind to include the mod.undoIt() command, but it doesn’t
> enjoy calling it when being asked to Undo, such as via the Edit -> Undo
> menu item.
>
> Google revealed that this topic has been discussed quite
> <http://forums.cgsociety.org/archive/index.php?t-1135833.html> a
> <https://groups.google.com/forum/#!topic/python_inside_maya/xN9MoGumJxQ>
> few
> <https://stackoverflow.com/questions/37263151/how-to-undo-deleting-meshes-using-the-maya-api>
>
> times
> <http://around-the-corner.typepad.com/adn/2012/07/looking-at-undo-in-regards-to-deleting-attributes-and-nodes.html>
>
> in the past with little to no avail.. The suggested methods seem to boil
> down to either..
>
> 1. Don’t use the API
> 2. Write a Command Plug-in
>
> Let’s assume for a second that (1) is a no-go, then what about (2)? That
> would work in situations where you had a pre-defined command you needed to
> run multiple times in a pre-defined fashion; like the cmds.polySphere
> command that creates a few nodes, makes a few connections and sets a few
> attributes.
>
> But what if you just wanted to run something like the above? What if the
> number of commands you had in mind are many, or depend on too many factors
> to embed into a plug-in? Is there no hope?
>
> What I’m hoping for is something along these lines..
>
> queue = om.MGlobalUndoQueue()
> queue.append(mod.undoIt)
>
> Such that when the user attempts to undo, this command is called, followed
> by whatever else was in the queue at the time of appending.
>
> It doesn’t have to be this of course. So long as I tailor what is going to
> be undone when undo is on the march.
>
> Any ideas?
>
>
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