SkinnedMeshの追従先ボーンを指定オブジェクト以下の同名のものに変えるスクリプト

Clothing.cs

using UnityEngine;
using UnityEditor;
using System.Linq;

public class Clothing : EditorWindow {
    [MenuItem("Window/Clothing")]
    public static void ShowWindow()
    {
        GetWindow(typeof(Clothing));
    }

    private Transform avatar;
    private SkinnedMeshRenderer equip;

    void OnGUI()
    {
        avatar = EditorGUILayout.ObjectField("Avatar", avatar, typeof(Transform), true) as Transform;
        equip = EditorGUILayout.ObjectField("Clothing", equip, typeof(SkinnedMeshRenderer), true) as SkinnedMeshRenderer;

        if (avatar != null && equip != null)
        {
            if (GUILayout.Button("Wear"))
            {
                var avatarBoneDic = avatar.GetComponentsInChildren<Transform>().ToDictionary(x => x.name, x => x);
                var attachedBones = equip.bones.ToArray();
                for(int i=0; i<equip.bones.Length; i++)
                {
                    var equipBone = equip.bones[i];
                    var avatarBone = avatarBoneDic[equipBone.name];
                    attachedBones[i] = avatarBone;
                }
                equip.bones = attachedBones;
                equip.rootBone = avatarBoneDic[equip.rootBone.name];
                equip.transform.SetParent(avatar, true);
            }
        }
    }
}