/// <summary>
/// オートアイムーブメントが有効化される条件を揃えます。
/// </summary>
/// <remarks>
/// 参照:
/// 100の人さんのツイート: “Body当たりでした！ オートアイムーブメントの条件解明！ • ルート直下に、BlendShapeが4つ以上設定された「Body」という名前のオブジェクトが存在する • ルート直下に Armature/Hips/Spine/Chest/Neck/Head/RightEyeとLeftEye ※すべて空のオブジェクトで良い ※目のボーンの名称は何でも良い… https://t.co/dLnHl7QjJk”
/// <https://twitter.com/esperecyan/status/1045713562348347392>
/// </remarks>
/// <param name="avatar"></param>
private static void EnableAutoEyeMovement(GameObject avatar)
{
// ダミーの階層構造の作成
foreach (var path in VRChatUtility.RequiredPathForAutoEyeMovement.Concat(new string[] { VRChatUtility.AutoBlinkMeshPath }))
{
var current = avatar.transform;
foreach (var name in path.Split(separator: '/'))
{
Transform child = current.Find(name);
if (!child)
{
child = new GameObject(name).transform;
child.parent = current;
}
current = child;
}
}
// ダミーのまばたき用ブレンドシェイプの作成
Mesh mesh = avatar.transform.Find(VRChatUtility.AutoBlinkMeshPath).GetSharedMesh();
if (mesh.blendShapeCount >= BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.Count())
{
return;
}
foreach (var name in BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.Skip(count: mesh.blendShapeCount))
{
BlendShapeReplacer.AddDummyShapeKey(mesh: mesh, name: name);
}
EditorUtility.SetDirty(mesh);
}
/// <summary>
/// Animatorコンポーネントを使用せずに、<see cref="BlendShapePreset.Neutral"/>、および<see cref="BlendShapePreset.Blink"/>を変換します。
/// </summary>
/// <remarks>
/// <see cref="BlendShapePreset.Blink"/>が関連付けられたメッシュが見つからない、またはそのメッシュに
/// <see cref="BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin"/>がそろっていれば何もしません。
/// それらのキーが存在せず、<see cref="BlendShapePreset.Blink_L"/>、<see cref="BlendShapePreset.Blink_R"/>がいずれも設定されていればそれを優先します。
/// </remarks>
/// <param name="avatar"></param>
/// <param name="clips"></param>
/// <param name="useShapeKeyNormalsAndTangents"></param>
private static void SetBlinkWithoutAnimator(
GameObject avatar,
IEnumerable <VRMBlendShapeClip> clips,
bool useShapeKeyNormalsAndTangents
)
{
var renderer = avatar.transform.Find(VRChatUtility.AutoBlinkMeshPath).GetComponent <SkinnedMeshRenderer>();
Mesh mesh = renderer.sharedMesh;
if (BlendShapeReplacer.GetBlendShapeNames(mesh: mesh)
.Take(BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.Count())
.SequenceEqual(BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin))
{
return;
}
IEnumerable <BlendShape> shapeKeys = BlendShapeReplacer.GetAllShapeKeys(mesh, useShapeKeyNormalsAndTangents);
mesh.ClearBlendShapes();
var dummyShapeKeyNames = new List <string>();
if (clips.FirstOrDefault(c => c.Preset == BlendShapePreset.Blink_L) &&
clips.FirstOrDefault(c => c.Preset == BlendShapePreset.Blink_R))
{
mesh.AddBlendShapeFrame(
BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.ElementAt(0),
BlendShapeReplacer.MaxBlendShapeFrameWeight,
BlendShapeReplacer.GenerateShapeKey(
namesAndWeights: clips.First(c => c.Preset == BlendShapePreset.Blink_L).ShapeKeyValues,
shapeKeys: shapeKeys
),
null,
null
);
mesh.AddBlendShapeFrame(
BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.ElementAt(1),
BlendShapeReplacer.MaxBlendShapeFrameWeight,
BlendShapeReplacer.GenerateShapeKey(
namesAndWeights: clips.First(c => c.Preset == BlendShapePreset.Blink_R).ShapeKeyValues,
shapeKeys: shapeKeys
),
null,
null
);
}
else
{
mesh.AddBlendShapeFrame(
BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.ElementAt(0),
BlendShapeReplacer.MaxBlendShapeFrameWeight,
BlendShapeReplacer.GenerateShapeKey(
namesAndWeights: clips.First(c => c.Preset == BlendShapePreset.Blink).ShapeKeyValues,
shapeKeys: shapeKeys
),
null,
null
);
dummyShapeKeyNames.Add(BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.ElementAt(1));
}
dummyShapeKeyNames.AddRange(BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.Skip(2));
foreach (string name in dummyShapeKeyNames)
{
BlendShapeReplacer.AddDummyShapeKey(mesh: mesh, name: name);
}
foreach (BlendShape shapeKey in shapeKeys)
{
if (BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.Contains(shapeKey.Name))
{
continue;
}
mesh.AddBlendShapeFrame(
shapeKey.Name,
BlendShapeReplacer.MaxBlendShapeFrameWeight,
shapeKey.Positions.ToArray(),
shapeKey.Normals.ToArray(),
shapeKey.Tangents.ToArray()
);
}
EditorUtility.SetDirty(mesh);
}
/// <summary>
/// <see cref="BlendShapePreset.Neutral"/>、および<see cref="BlendShapePreset.Blink"/>を変換します。
/// </summary>
/// <remarks>
/// 参照:
/// 最新版（10/02時点）自動まばたきの実装【VRChat技術情報】 — VRChatパブリックログ
/// <https://jellyfish-qrage.hatenablog.com/entry/2018/10/02/152316>
/// VRchatでMMDモデルをアバターとして使う方法——上級者編 — 東屋書店
/// <http://www.hushimero.xyz/entry/vrchat-EyeTracking#%E5%A4%A7%E5%8F%A3%E9%96%8B%E3%81%91%E3%82%8B%E5%95%8F%E9%A1%8C%E3%81%AE%E8%A7%A3%E6%B1%BA>
/// 技術勢の元怒さんのツイート: “自動まばたきはまばたきシェイプキーを、まばたき防止のほうは自動まばたきのエナブルONOFFを操作してますね。 欲しければサンプル渡せますよ。… ”
/// <https://twitter.com/gend_VRchat/status/1100155987216879621>
/// momoma/ナル@VRChatter/VTuberさんのツイート: “3F目にBehavior 1のキーを追加したら重複しなくなったわ、なるほどな… ”
/// <https://twitter.com/momoma_creative/status/1137917887262339073>
/// </remarks>
/// <param name="avatar"></param>
/// <param name="clips"></param>
/// <paramref name="useShapeKeyNormalsAndTangents"/>
private static void SetNeutralAndBlink(
GameObject avatar,
IEnumerable <VRMBlendShapeClip> clips,
bool useShapeKeyNormalsAndTangents
)
{
AnimatorController neutralAndBlinkController
= BlendShapeReplacer.CreateSingleAnimatorController(avatar: avatar, name: "blink");
AnimationClip animationClip = neutralAndBlinkController.animationClips[0];
VRMBlendShapeClip blinkClip = null;
foreach (var preset in new[] { BlendShapePreset.Blink, BlendShapePreset.Neutral })
{
VRMBlendShapeClip clip = clips.FirstOrDefault(c => c.Preset == preset);
if (!clip)
{
continue;
}
if (preset == BlendShapePreset.Blink)
{
blinkClip = clip;
}
foreach (var(shapeKeyName, shapeKeyWeight) in clip.ShapeKeyValues)
{
var keys = BlendShapeReplacer.BlinkWeights;
if (preset == BlendShapePreset.Neutral)
{
if (blinkClip && blinkClip.ShapeKeyValues.ContainsKey(shapeKeyName))
{
// NEUTRALとBlinkが同一のシェイプキーを参照していた場合
float blinkShapeKeyWeight = blinkClip.ShapeKeyValues[shapeKeyName];
var animationCurve = new AnimationCurve();
foreach (var(seconds, blendShapePreset) in BlendShapeReplacer.NeutralAndBlinkWeights)
{
float weight;
switch (blendShapePreset)
{
case BlendShapePreset.Neutral:
weight = shapeKeyWeight;
break;
case BlendShapePreset.Blink:
weight = blinkShapeKeyWeight;
break;
default:
weight = 0;
break;
}
animationCurve.AddKey(new Keyframe(seconds, weight));
}
animationClip.SetCurve(
"",
typeof(SkinnedMeshRenderer),
"blendShape." + shapeKeyName,
animationCurve
);
continue;
}
keys = BlendShapeReplacer.NeutralWeights;
}
SetBlendShapeCurve(animationClip, shapeKeyName, shapeKeyWeight, keys, setRelativePath: false);
}
foreach (MaterialValueBinding binding in clip.MaterialValues)
{
// TODO
}
}
Transform transform = avatar.transform.Find(VRChatUtility.AutoBlinkMeshPath);
transform.gameObject.AddComponent <Animator>().runtimeAnimatorController = neutralAndBlinkController;
// VRChat側の自動まばたきを回避
Mesh mesh = transform.GetSharedMesh();
IEnumerable <BlendShape> shapeKeys = BlendShapeReplacer.GetAllShapeKeys(mesh, useShapeKeyNormalsAndTangents);
mesh.ClearBlendShapes();
foreach (string name in BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin)
{
BlendShapeReplacer.AddDummyShapeKey(mesh: mesh, name: name);
}
foreach (BlendShape shapeKey in shapeKeys)
{
if (BlendShapeReplacer.OrderedBlinkGeneratedByCatsBlenderPlugin.Contains(shapeKey.Name))
{
continue;
}
mesh.AddBlendShapeFrame(
shapeKey.Name,
BlendShapeReplacer.MaxBlendShapeFrameWeight,
shapeKey.Positions.ToArray(),
shapeKey.Normals.ToArray(),
shapeKey.Tangents.ToArray()
);
}
EditorUtility.SetDirty(mesh);
}