What if you did it through the Maya API, and made use of the actual MObject
knowing exactly which node it is pointing at, instead of the ambiguous maya
paths?
import maya.OpenMaya as om
dagFn = om.MFnDagNode()
group = dagFn.create("transform", "testGRP")
dagFn.setObject(group)
groupPath = dagFn.fullPathName()
print groupPath
# |testGRP
But I will be honest. Given that the currency in the Maya commands is
string paths, I don't think it is wrong to format a full path of "|testGRP"
if a call to cmds.group(empty=True, world=True, name="testGRP") returns
your "testGRP". Am I right in assuming that if you are creating it with
world=True, you are placing it at the root of the scene anyways? The only
thing that might be faulty with that is if you are in a different
namespace, right? But overall, the Maya API might be more "precise".
On Sat, Mar 22, 2014 at 8:09 PM, Joe Weidenbach <[email protected]> wrote:
> Actually, even after all of my years (12+) working with Maya, I've got a
> question on this one too--has anyone found a reliable way to get around
> maya creating a group with a name which returns only the short path (not
> even the shortest unique path)? Is the only way to rename the group after
> the creation? Or, is there an API function that I'm missing that will
> return the actual long group name? My current workaround is running a
> cmds.ls on any nodes I create with long=true, but with a group that
> returns a list of possible nodes; like so:
>
> node = cmds.ls(cmds.group(empty=True, name="testGRP"), long=True)
>
> if I have a group such as "|test|testGRP", node will equal
> [u'|test|testGRP', u'|testGRP']
>
> Of course, the intention is that node would equal [u'|testGrp'] so that I
> could use node[0] to reference it, versus arbitrarily guessing which is the
> correct node. This is one of those cases where I miss using PyMEL
> currently :)
>
> My current solution is to use something more like this:
>
> node = cmds.group(empty=True, world=True, name="testGRP")
> foundNode = cmds.ls("|{0}".format(node), long=True)
>
> But for obvious reasons, that feels fairly silly and highly unpythonic :)
>
> Also, as an update, I talked to Steven Roselle at GDC, and he said that
> Python API 2.0 is still very high on their list of priorities, but has no
> updates in 2015 :(
>
> Joe
>
>
> On 3/19/2014 10:56 AM, Marcus Ottosson wrote:
>
> I see. It's generally a good approach to work with full-paths throughout,
> and if you do, you should encounter little difficulty in paths across
> packages. Even duplicate names across hierarchies are unique given a full
> path.
>
>
> On 19 March 2014 17:44, Eric Thivierge <[email protected]> wrote:
>
>> Thanks Marcus,
>>
>> The problem I'm facing currently is that I need to write data to a json
>> file that can be read in and interperated by both Softimage and Maya. So I
>> have to store object names consistently when exporting from Softimage or
>> Maya. I'm probably more in favor of mimicking the Maya format at this point
>> since, well you know why.
>>
>> Thanks,
>> Eric T.
>>
>>
>> On Wednesday, March 19, 2014 1:12:25 PM, Marcus Ottosson wrote:
>>
>>> In Maya, the hierarchy is included in a node's path but gets discarded
>>> most of the time and instead the artist is trusted to keep his names
>>> unique. The reason this is the case is because in Maya, there is no
>>> "hierarchy". Maya is inherently node-based; Softimage on the other
>>> hand does have the notion of a hierarchy.
>>>
>>> Thus, a full path of a pCube1 may be resolve
>>> into'|a_group|another_group|pCube1', the | being the separator.
>>>
>>> You can ask for full paths via cmds.ls <http://cmds.ls>(long=True),
>>>
>>> other commands have similar flags, such as
>>> cmds.listRelatives(fullPath=True) that ultimately do the same thing;
>>> concatenate the depth-first path of a node within a graph.
>>>
>>> Additionally, Maya has the notion of namespaces, which encapsulates
>>> nodes similar to how Models encapsulates nodes in Softimage, however I
>>> would suggest sticking with hungarian notation at first as namespaces
>>> are tricky to understand at first.
>>>
>>> Best,
>>> Marcus
>>>
>>>
>>> On 19 March 2014 15:00, Eric Thivierge <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>> Hah. Well, yeah... thanks.
>>>
>>> On Wednesday, March 19, 2014 10:59:10 AM, damon shelton wrote:
>>>
>>> cmds.ls <http://cmds.ls> <http://cmds.ls> ('*pCube1',
>>> long=True)
>>>
>>>
>>>
>>> On Mar 19, 2014 7:54 AM, "Eric Thivierge"
>>> <[email protected] <mailto:[email protected]>
>>> <mailto:[email protected]
>>>
>>> <mailto:[email protected]>__>> wrote:
>>>
>>> Hello all,
>>>
>>> This may seem like a simple question but my Googling
>>> didn't return
>>> any useful results.
>>>
>>> I have a name of an object 'pCube1'. I need to find it in
>>> the Maya
>>> scene. Problem is, I may have multiple objects in the
>>> scene that
>>> are named the same thing. Even in the same hierarchy
>>> (Crazy that
>>> Maya lets you do this btw). Is there a way to get a list
>>> of all
>>> objects that are named 'pCube1'? Once I get that list I
>>> need to
>>> find the top most parent in the scene. From there I can
>>> find the
>>> one I need.
>>>
>>> When I try to listRelatives, it throws an error saying
>>> there is
>>> more than one node int he scene that is name 'pCube1'.
>>>
>>> # PyMel
>>> print pm.objExists('pCube1')
>>>
>>> parents = pm.listRelatives('pCube1', allParents=True)
>>> for eachItem in parents:
>>> print eachItem.name()
>>>
>>> Thanks,
>>> Eric T.
>>>
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>
>
> --
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> [email protected]
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