CreatePSBlendshapes.cs

using System.IO;
using UniGLTF;
using UnityEditor;
using UnityEngine;
using VRM;

/**
 * Assets/Editor/CreatePSBlendshapes.cs
 * Use at your own risk
 *
 * Tested on UniVRM v0.99.2 / Unity 2019.4.31f1
 */
public class CreatePSBlendshapes : EditorWindow
{
    private readonly string[] _names =
    {
        "BrowDownLeft",
        "BrowDownRight",
        "BrowInnerUp",
        "BrowOuterUpLeft",
        "BrowOuterUpRight",
        "CheekPuff",
        "CheekSquintLeft",
        "CheekSquintRight",
        "EyeBlinkLeft",
        "EyeBlinkRight",
        "EyeLookDownLeft",
        "EyeLookDownRight",
        "EyeLookInLeft",
        "EyeLookInRight",
        "EyeLookOutLeft",
        "EyeLookOutRight",
        "EyeLookUpLeft",
        "EyeLookUpRight",
        "EyeSquintLeft",
        "EyeSquintRight",
        "EyeWideLeft",
        "EyeWideRight",
        "JawForward",
        "JawLeft",
        "JawOpen",
        "JawRight",
        "MouthClose",
        "MouthDimpleLeft",
        "MouthDimpleRight",
        "MouthFrownLeft",
        "MouthFrownRight",
        "MouthFunnel",
        "MouthLeft",
        "MouthLowerDownLeft",
        "MouthLowerDownRight",
        "MouthPressLeft",
        "MouthPressRight",
        "MouthPucker",
        "MouthRight",
        "MouthRollLower",
        "MouthRollUpper",
        "MouthShrugLower",
        "MouthShrugUpper",
        "MouthSmileLeft",
        "MouthSmileRight",
        "MouthStretchLeft",
        "MouthStretchRight",
        "MouthUpperUpLeft",
        "MouthUpperUpRight",
        "NoseSneerLeft",
        "NoseSneerRight",
        "TongueOut"
    };

    private BlendShapeAvatar _avatar;

    [MenuItem("Tools/VRM/Create Perfect Sync Blendshapes")]
    public static void Init()
    {
        var window = GetWindow<CreatePSBlendshapes>();
        window.Show();
    }

    private void OnGUI()
    {
        _avatar = EditorGUILayout.ObjectField(_avatar, typeof(BlendShapeAvatar), false) as BlendShapeAvatar;
        
        if (GUILayout.Button("Create Perfect Sync Blendshapes!"))
        {
            if (!_avatar) return;
            
            var dir = Path.GetDirectoryName(AssetDatabase.GetAssetPath(_avatar));
            var path = EditorUtility.SaveFolderPanel(
                "Create Perfect Sync BlendShapeClip",
                dir,
                "");

            if (string.IsNullOrEmpty(path)) return;
            
            foreach (string name in _names) {
                var clip = BlendShapeAvatar.CreateBlendShapeClip(path.ToUnityRelativePath() + "/" + name + ".asset");

                _avatar.Clips.Add(clip);
            } 
            
            EditorUtility.SetDirty(_avatar);
        }
    }
}