左右対称複製。ペアレント構造でも名称が重複しない

MirrorInstance2.py

# -*- coding: utf-8 -*
import maya.cmds as cmds

def MirrorMesh():
    sellist = cmds.ls(selection=1,type="transform", l=1)
    sellist = getMeshNode(sellist)
    if len(cmds.ls("Sym_gr")) == 0:
        parentLoc = cmds.spaceLocator()
        parentLoc = cmds.rename(parentLoc,"Sym_gr")
    else:
        parentLoc = "Sym_gr"
    cmds.select(sellist)
    applyMirrorMesh(sellist,"__INST__",parentLoc)

def getMeshNode(targetList):
    rebuildList = []
    for item in targetList:
        if cmds.nodeType(item) == "mesh" or cmds.nodeType(item) == "transform" and "mesh" in [cmds.nodeType(x) for x in cmds.listHistory(item, f=1)]:
            rebuildList.append(item)
    return rebuildList
    
def scrapHierarchy(targetList):
    for item in targetList:
        if not cmds.listRelatives(item, p=1) == None:
            cmds.parent(item, world=1)

def filteredSuffix(targetList, suffix=""):
    filteredList = []
    for item in targetList:
        itemName = item.split("|")[-1]

        if suffix in item:
            continue
            
        if len(cmds.ls("*"+itemName+suffix+"*",l=1,type="transform")) == 0:
           filteredList.append(item) 
           
    return filteredList  
     
def applyMirrorMesh(targetList, suffix="", parentNode=None):
    targetList = filteredSuffix(targetList, suffix)
    dupList = cmds.duplicate(ilf=1, ic=1, rc=1)
    if len(dupList) > len(targetList):
        dellist = dupList[len(targetList):len(dupList)]
        scrapHierarchy(dupList)   
        cmds.delete(dellist)
        dupList = dupList[:len(targetList)]
    else:
        scrapHierarchy(dupList)
      
    for i,item in enumerate(dupList):
        gposList = cmds.xform(item, q=1, ws=1, t=1)
        grotList = cmds.xform(item, q=1, ws=1, ro=1)
        gsclList = cmds.xform(item, q=1, ws=1, s=1)
        m_posx, m_roty, m_rotz, m_sclx  = gposList[0]*-1, grotList[1]*-1, grotList[2]*-1, gsclList[0]*-1
        cmds.move(m_posx, item, x=1, ws=1)
        cmds.rotate(m_roty, m_rotz, item, yz=1, ws=1)
        cmds.scale(m_sclx, item, x=1)
        item = cmds.rename(item,targetList[i].split("|")[-1]+suffix)
        if not parentNode == None:
            cmds.parent(item, parentNode)
        cmds.select(targetList)

MirrorMesh()