Updated

Scripts/Modeling/Edit/LDMT/ldmt_function/ldmt_morphToUV.py

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+import maya.cmds as cmds
+import maya.mel as mel
+import maya.api.OpenMaya as om2
+def deleteNoUV():
+    selObj = cmds.ls(sl=1,o=1)
+    selObj = selObj[0]
+    selObj_face = selObj + '.f[*]'
+    selObj_face = cmds.ls(selObj_face, fl=1)
+    selObj_uv = cmds.polyListComponentConversion(selObj,tuv=1)
+    selObj_face_hasUV = cmds.polyListComponentConversion(selObj_uv,tf=1)
+    selObj_face_hasUV = cmds.ls(selObj_face_hasUV, fl=1)
+    selObj_face_noUV = list(set(selObj_face).difference(set(selObj_face_hasUV)))
+    if selObj_face_noUV:
+        cmds.delete(selObj_face_noUV)
+    return selObj
+    
+def splitIfOnUVBorder():
+    sel = cmds.ls(sl=1,o=1)
+    sel = sel[0]
+    selList = om2.MGlobal.getActiveSelectionList()
+    selListPath = selList.getDagPath(0)
+    vertIt = om2.MItMeshVertex(selListPath)
+    selMesh = om2.MFnMesh(selListPath)
+    vertIdToSplit = []
+    vertToSplit = []
+    while not vertIt.isDone():
+        uvIndices = vertIt.getUVIndices()
+        uvIndices = list(set(uvIndices))
+        if len(uvIndices)>=2:
+            vertIdToSplit.append(vertIt.index())
+        elif vertIt.onBoundary():
+            vertIdToSplit.append(vertIt.index())
+        vertIt.next()
+    for i in range(len(vertIdToSplit)):
+        vertToSplit.append(sel+'.vtx['+str(vertIdToSplit[i])+']')
+    cmds.polySplitVertex(vertToSplit,cch=0)
+    
+def morph2UV():
+    sel = cmds.ls(sl=1,o=1)
+    sel = sel[0]
+    selList = om2.MSelectionList()
+    selList.add(sel)
+    path = selList.getDagPath(0)
+    myMesh = om2.MFnMesh(path)
+    newPointArray = om2.MPointArray()
+    space = om2.MSpace.kWorld
+    myMesh_UVs = myMesh.getUVs()
+    myMesh_points = myMesh.getPoints()
+    # for i in range(myMesh.numVertices):
+    myMesh_itVertex = om2.MItMeshVertex(path)
+    points = om2.MPointArray()
+    while not myMesh_itVertex.isDone():
+        vertIndex = myMesh_itVertex.index()
+        gotUV = myMesh_itVertex.getUV()
+        point = om2.MPoint(gotUV[0],gotUV[1],0)
+        points.append(point)
+        myMesh_itVertex.next()
+    myMesh.setPoints(points,space)
+    
+def runMorph2UV():
+    baseObj = cmds.ls(sl=1,o=1)   #1. inputmesh
+    baseObjDup = cmds.duplicate() #2. duplicate
+    mel.eval("FreezeTransformations")
+    mel.eval("ResetTransformations")
+    baseObj = baseObjDup[0]
+    deleteNoUV()
+    splitIfOnUVBorder()
+    morph2UV()
+    currentSelection = cmds.ls(sl=1)
+    currentUV  = cmds.polyListComponentConversion(currentSelection,tuv=1)
+    cmds.polyMergeVertex(currentSelection,d=0.0001,cch=0)
+    cmds.polyMergeUV(currentUV,d=0.001,cch=0)   # fix split
+    cmds.select(baseObj,r=1)
+if __name__ == "__main__":
+    runMorph2UV()