Hi Ben,
I can't see your image, but I can run your code on a mesh of my own. In
really basic tests it seems to work correctly.
It's a bit tricky to read through. There's a fair bit of temp code in
there, and things that are assigned and not used. Also, why are you using
Python API 1.0? It's more difficult to use than 2.0 (unless you're more
familiar with C++, I guess).
There are a few ways it could go wrong.
- The most likely problem, I think, is that the code I gave you assumes
that every face has UVs. I said "Note that verts with no UVs will not be
counted at all this way. You might want to add a check that every set has
at least one element in it," and that the two face lists (from getVertices
and getAssignedUVs) will be identical. That was incorrect. If any faces
have no UVs, they will get a 0 in the face list from getAssignedUVs and
your vertex ID and UV ID lists will no longer correspond.
- There's also the problem that selecting '{0}.map[{1}]' will select UVs
in the currently active UV set, which may or may not be 'uvSet'. You can
set the currently active UV set in script, or in the UV Editor.
- The basic idea of doing "totalVertCount = sum(len(s) for s in
vertUVIDs if len(s)>1)" seems flawed to me. You're only counting verts
that are on seams. How are you going to use that number?
If you can get your image attached properly (I think the problem is at your
end...), and confirm that your mesh has UVs for all faces in 'uvSet', we
can build up from there.
On Saturday, 11 November 2017 01:10:22 UTC+11, Benjam901 wrote:
>
> Hey Michael,
>
> I copied some UVs into a new UV map and tried the same method and to
> highlight what was happening I am selecting the UVs.
>
> For the 2nd UV set however the method looks like it fails, when I select
> the UVs it selects almost all the verts in the map.
>
> I amended the code to give me the additional vert count i.e. verts only on
> seams adn the output for the 2nd map is 166 which is not correct.
>
> Can you replicate this error also?
>
> Code and screenshot is below:
>
> import pymel.core as pm
> import maya.OpenMaya as OM
> from itertools import izip
>
> sel = pm.ls(sl=True)[0]
> selName = str(sel.nodeName())
>
> mSelList = OM.MSelectionList()
> OM.MGlobal.getActiveSelectionList(mSelList)
> sel = OM.MItSelectionList(mSelList)
> path = OM.MDagPath()
> sel.getDagPath(path)
> fnMesh = OM.MFnMesh(path)
>
> vertCount = OM.MIntArray()
> vertList = OM.MIntArray()
>
> uvCounts = OM.MIntArray()
> uvIDs = OM.MIntArray()
> #uvSet='map1'
>
> set2 = 'uvSet'
> tempSets = ['map1', 'uvSet']
>
> additional = 0
>
> #for uvSet in tempSets:
> fnMesh.getVertices(vertCount, vertList)
> #fnMesh.getAssignedUVs(uvCounts, uvIDs, uvSet)
> fnMesh.getAssignedUVs(uvCounts, uvIDs, set2)
>
> vertUVIDs = [set() for _ in range(fnMesh.numVertices())]
>
> for vID, uvID in izip(vertList, uvIDs):
> vertUVIDs[vID].add(uvID)
>
> totalVertCount = sum(len(s) for s in vertUVIDs if len(s)>1)
> additional += totalVertCount
> print additional
>
> totes = [i for i in vertUVIDs if len(i) > 1]
> for i in totes:
> for j in i:
> pm.select('{0}.map[{1}]'.format(selName, j), add=True)
>
>
>
> [image: Inline images 1]
>
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