thanks vince, and that code was from the example I was building from...and
I had changed it to not be list in mine, but was running into the same error
On Fri, Jun 18, 2021 at 9:32 AM vince touache <fruityfr...@gmail.com> wrote:
> 1. don't override python keywords (e.g. "list")
> 2. are you stuck to api1 or is that ok to use api2?
> 3. Provide dag path instead of mobjects to your function sets if you can,
> that'll let you work with world space
>
> Then, you could start with something like this (api2):
> fnSphere =
> MFnMesh(MGlobal.getSelectionListByName('pSphereShape1').getDagPath(0))
> u, v = 0.52, 0.52
> polyIds, positions = fnSphere.getPointsAtUV(u, v, tolerance=0.00001)
> it = MItMeshPolygon(fnSphere.object())
> it.setIndex(polyIds[0])
> it.getVertices()
>
> I'm sure there are faster ways to do it, by working with triangles and not
> poly all the way long, but can't retreive the command off top of my head.
> But this should give you a good starting point already
>
> Le jeudi 17 juin 2021 à 20:13:56 UTC-4, todd.wi...@gmail.com a écrit :
>
>> ok so on this....I have my UV coord, there is no function for converting
>> that to a face and the examples im finding ONLY cover using a map ID not a
>> random UV position, additionally, the code example actually doesnt even work
>>
>>
>> import maya.cmds as cmds
>> import maya.OpenMaya as OpenMaya
>>
>> list = OpenMaya.MSelectionList()
>> sphereName = "pSphereShape1"
>> planeName = "pPlaneShape1"
>>
>> list.add(sphereName)
>> list.add(planeName)
>>
>> sphereObj = OpenMaya.MObject()
>> planeObj = OpenMaya.MObject()
>>
>> list.getDependNode(0, sphereObj)
>> list.getDependNode(1, planeObj)
>>
>> sphereMesh = OpenMaya.MFnMesh(sphereObj) # errors out here with #
>> RuntimeError: (kInvalidParameter): Object is incompatible with this method
>> #
>> planeMesh = OpenMaya.MFnMesh(planeObj)
>>
>>
>> On Thu, Jun 17, 2021 at 2:59 PM Todd Widup <todd....@gmail.com> wrote:
>>
>>> that would work :)
>>> wasnt thinking about getting faces
>>>
>>>
>>> On Thu, Jun 17, 2021 at 2:46 PM vince touache <fruit...@gmail.com>
>>> wrote:
>>>
>>>> you can get the polygon (as in "the face") at a given u and v, and from
>>>> the polygon, you query the vertices. Once there, you can get the
>>>> skinweights and barycentric. Or am I missing something?
>>>>
>>>> Le jeudi 17 juin 2021 à 17:43:25 UTC-4, todd....@gmail.com a écrit :
>>>>
>>>>> lol what I meant is how can you query the weight if given the UV
>>>>> position?
>>>>>
>>>>> On Thu, Jun 17, 2021 at 2:26 PM vince touache <fruit...@gmail.com>
>>>>> wrote:
>>>>>
>>>>>> I believe maya is using barycentric coordinates, that would be an
>>>>>> easy way of doing what you need (although the "UVs" part is not
>>>>>> mandatory)
>>>>>>
>>>>>> Le jeudi 17 juin 2021 à 17:25:14 UTC-4, todd....@gmail.com a écrit :
>>>>>>
>>>>>>> hey all, any good way of getting skin weights at a UV position (not
>>>>>>> a vtx) in python?
>>>>>>>
>>>>>>> --
>>>>>>> Todd Widup
>>>>>>> Creature TD / Technical Artist
>>>>>>> todd....@gmail.com
>>>>>>>
>>>>>> --
>>>>>> You received this message because you are subscribed to the Google
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>>>>>> To view this discussion on the web visit
>>>>>> https://groups.google.com/d/msgid/python_inside_maya/9364d2d3-6100-4aac-b7a7-d81d01a78fd9n%40googlegroups.com
>>>>>> <https://groups.google.com/d/msgid/python_inside_maya/9364d2d3-6100-4aac-b7a7-d81d01a78fd9n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>> .
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Todd Widup
>>>>> Creature TD / Technical Artist
>>>>> todd....@gmail.com
>>>>>
>>>> --
>>>> You received this message because you are subscribed to the Google
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>>>> <https://groups.google.com/d/msgid/python_inside_maya/b965c34d-a1de-4ed6-af53-32e4d1c32973n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>>
>>>
>>> --
>>> Todd Widup
>>> Creature TD / Technical Artist
>>> todd....@gmail.com
>>>
>>
>>
>> --
>> Todd Widup
>> Creature TD / Technical Artist
>> todd....@gmail.com
>>
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> .
>
--
Todd Widup
Creature TD / Technical Artist
todd.wi...@gmail.com
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