Not sure if that is what you are looking for, but if you want to use the
API you can do something like
mSel = OpenMaya.MSelectionList()
mSel.add("yourObject")
mDag = OpenMaya.MDagPath()
cmpMObj = OpenMaya.MObject()
mSel.getDagPath(0, mDag, cmpMObj)
faces = list()
mIt = OpenMaya.MItMeshPolygon(mDag, cmpMObj)
while not mIt.isDone():
faces.append(mIt.index())
mIt.next()
El viernes, 18 de junio de 2021 a las 18:54:49 UTC+2, Juan Moraga escribió:
> I totally agree. I had a problem like this before and I ended up using a
> method similar to Marcus'.
> As an additional note, something I found handy in the past was the
> "-flatten" flag of the cmds.ls() command, which will return you a list
> with one item for each component (faces, verts etc.).
>
> for mesh in cmds.ls(selection=True, type="transform"):
>> faces = cmds.ls(mesh + ".f[0:]", fl = True)
>> print(faces)
>>
>
> By the way, wouldn't the ls() in the for loop be with the type =
> "transform" flag instead of type = "mesh" flag?
>
> Kind regards,
>
>
>
> On Fri, 18 Jun 2021 at 15:12, Marcus Ottosson <konstr...@gmail.com> wrote:
>
>> Cool. :) It should be fast, you’re more or less passing the burden of
>> actually iterating over the scene to those two commands which are already
>> implemented in C++. So it’s likely that trying to replicate this via the
>> Python API would be *more* expensive.
>>
>> On Fri, 18 Jun 2021 at 14:56, Alejandro <voidr...@gmail.com> wrote:
>>
>>> I made a few tests on the usual number of elements, 2k / 1k, and it goes
>>> smoothly, not bad!
>>>
>>> Thanks a lot Marcus :)
>>>
>>> On Friday, June 18, 2021 at 9:42:35 a.m. UTC-4 Marcus Ottosson wrote:
>>>
>>>> You tell me. How long does it take currently? How often do you intend
>>>> on running it? How long would you like it to take?
>>>>
>>>> On Fri, 18 Jun 2021 at 12:38, Alejandro <voidr...@gmail.com> wrote:
>>>>
>>>>> Thanks a lot Marcus,
>>>>>
>>>>> I was looking for an option with the API for speed, since I have
>>>>> scenes with more than 1k objects, do you think it's not needed in this
>>>>> case
>>>>> ?
>>>>>
>>>>>
>>>>> On Friday, June 18, 2021 at 3:01:43 a.m. UTC-4 Marcus Ottosson wrote:
>>>>>
>>>>>> Something like this should have you covered.
>>>>>>
>>>>>> for mesh in cmds.ls(selection=True, type="mesh"):
>>>>>> cmds.select("%s.f[0:]" % mesh)
>>>>>> cmds.sets(name="%s_set" % mesh)
>>>>>>
>>>>>> The .f[] syntax is for selecting faces, it’s what you see echoed in
>>>>>> the Script Editor as you select a face interactively via the viewport.
>>>>>>
>>>>>> On Fri, 18 Jun 2021 at 00:44, Alejandro <voidr...@gmail.com> wrote:
>>>>>>
>>>>>>> Hello guys!,
>>>>>>>
>>>>>>> What would be the fastest solution to store all the face components
>>>>>>> for each object I select into its correspondent set?
>>>>>>>
>>>>>>> I'm trying something like this:
>>>>>>>
>>>>>>> mesh = maya.cmds.ls(selection=True, type='mesh')[0]
>>>>>>> selection_list = OpenMaya.MSelectionList()
>>>>>>> selection_list.add(mesh)
>>>>>>> dag_path = selection_list.getDagPath(0)
>>>>>>> mfn_mesh = OpenMaya.MFnMesh(dag_path)
>>>>>>>
>>>>>>> v_count, ids = mfn_mesh.getTriangles()
>>>>>>>
>>>>>>> but these are only triangle counts and vtx indexes, how could I have
>>>>>>> the full face element and store in a set ?
>>>>>>>
>>>>>>> thank you !
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
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>>>>>>>
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>>
>
>
> --
> *Juan Moraga*
> *Lead Technical Director @ MondoTV*
>
> Portfolio: https://juanmoraga.carbonmade.com/
> LInkedin: https://www.linkedin.com/in/juanmoragamartin/
> <http://juanmoragaart.tumblr.com/>
>
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