#!/usr/bin/env python
# -*- coding: utf-8 -*-

import maya.cmds as cmds

from Core import GetMeshes, GetBlendShape

def AddBlendShape(targetName):
    # 获取当前选择的对象
    sel = cmds.ls(selection=True)
    for obj in sel:
        for j in range(50):
            meshe = GetMeshes(m=j)
            if obj == meshe:
                if targetName:
                    blendShape = GetBlendShape(meshe)
                    if not cmds.objExists(blendShape):
                        blendShape = GetMeshes(i=j) + "_blendShapes"
                        cmds.blendShape(meshe, automatic=True, name=blendShape)
                    attrWeight = blendShape + ".weight"
                    currentBlendShapeList = cmds.listAttr(attrWeight, multi=True)
                    if targetName not in currentBlendShapeList:
                        cmds.duplicate(meshe, returnRootsOnly=True, name=targetName)
                        targetIndex = cmds.getAttr(attrWeight, size=True)
                        cmds.blendShape(blendShape, edit=True, target=(meshe, targetIndex, targetName, 1), weight=(targetIndex, 0))
                        cmds.delete(targetName)
    cmds.select(sel, replace=True)