Merge pull request #2363 from ousttrue/feature/springbone_pause

add BlittableExternalData.Paused

Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10Runtime.cs

@@ -1,11 +1,5 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using UniGLTF;
-using UniGLTF.Utils;
 using UnityEngine;
-using UniVRM10.FastSpringBones.Blittables;
-using UniVRM10.FastSpringBones.System;
 
 namespace UniVRM10
 {
@@ -23,11 +17,6 @@ namespace UniVRM10
     {
         private readonly Vrm10Instance m_instance;
         private readonly Transform m_head;
-        private readonly FastSpringBoneService m_fastSpringBoneService;
-        private readonly IReadOnlyDictionary<Transform, TransformState> m_defaultTransformStates;
-
-        private FastSpringBoneBuffer m_fastSpringBoneBuffer;
-        private BlittableExternalData m_externalData;
 
         /// <summary>
         /// Control Rig may be null.
@@ -38,17 +27,14 @@ namespace UniVRM10
         public IVrm10Constraint[] Constraints { get; }
         public Vrm10RuntimeExpression Expression { get; }
         public Vrm10RuntimeLookAt LookAt { get; }
-
+        public Vrm10RuntimeSpringBone SpringBone { get; }
         public IVrm10Animation VrmAnimation { get; set; }
 
+        [Obsolete("use Vrm10Runtime.SpringBone.ExternalForce")]
         public Vector3 ExternalForce
         {
-            get => m_externalData.ExternalForce;
-            set
-            {
-                m_externalData.ExternalForce = value;
-                m_fastSpringBoneBuffer.ExternalData = m_externalData;
-            }
+            get { return SpringBone.ExternalForce; }
+            set { SpringBone.ExternalForce = value; }
         }
 
         public Vrm10Runtime(Vrm10Instance instance, bool useControlRig)
@@ -72,117 +58,20 @@ namespace UniVRM10
             Constraints = instance.GetComponentsInChildren<IVrm10Constraint>();
             LookAt = new Vrm10RuntimeLookAt(instance.Vrm.LookAt, instance.Humanoid, ControlRig);
             Expression = new Vrm10RuntimeExpression(instance, LookAt.EyeDirectionApplicable);
-
-            var gltfInstance = instance.GetComponent<RuntimeGltfInstance>();
-            if (gltfInstance != null)
-            {
-                // ランタイムインポートならここに到達してゼロコストになる
-                m_defaultTransformStates = gltfInstance.InitialTransformStates;
-            }
-            else
-            {
-                // エディタでプレハブ配置してる奴ならこっちに到達して収集する
-                m_defaultTransformStates = instance.GetComponentsInChildren<Transform>()
-                    .ToDictionary(tf => tf, tf => new TransformState(tf));
-            }
-
-            // NOTE: FastSpringBoneService は UnitTest などでは動作しない
-            if (Application.isPlaying)
-            {
-                m_fastSpringBoneService = FastSpringBoneService.Instance;
-                m_fastSpringBoneBuffer = CreateFastSpringBoneBuffer(m_instance.SpringBone);
-                m_fastSpringBoneService.BufferCombiner.Register(m_fastSpringBoneBuffer);
-            }
+            SpringBone = new Vrm10RuntimeSpringBone(instance);
         }
 
         public void Dispose()
         {
             ControlRig?.Dispose();
-            m_fastSpringBoneService.BufferCombiner.Unregister(m_fastSpringBoneBuffer);
-            m_fastSpringBoneBuffer.Dispose();
+            SpringBone.Dispose();
         }
 
-        /// <summary>
-        /// このVRMに紐づくSpringBone関連のバッファを再構築する
-        /// ランタイム実行時にSpringBoneに対して変更を行いたいときは、このメソッドを明示的に呼ぶ必要がある
-        /// </summary>
+        [Obsolete("use Vrm10Runtime.SpringBone.ReconstructSpringBone")]
         public void ReconstructSpringBone()
         {
-            m_fastSpringBoneService.BufferCombiner.Unregister(m_fastSpringBoneBuffer);
-
-            m_fastSpringBoneBuffer.Dispose();
-            m_fastSpringBoneBuffer = CreateFastSpringBoneBuffer(m_instance.SpringBone);
-
-            m_fastSpringBoneService.BufferCombiner.Register(m_fastSpringBoneBuffer);
+            SpringBone.ReconstructSpringBone();
         }
-
-        private FastSpringBoneBuffer CreateFastSpringBoneBuffer(Vrm10InstanceSpringBone springBone)
-        {
-            return new FastSpringBoneBuffer(
-                springBone.Springs.Select(spring => new FastSpringBoneSpring
-                {
-                    center = spring.Center,
-                    colliders = spring.ColliderGroups
-                    .SelectMany(group => group.Colliders)
-                    .Select(collider => new FastSpringBoneCollider
-                    {
-                        Transform = collider.transform,
-                        Collider = new BlittableCollider
-                        {
-                            offset = collider.Offset,
-                            radius = collider.Radius,
-                            tailOrNormal = collider.TailOrNormal,
-                            colliderType = TranslateColliderType(collider.ColliderType)
-                        }
-                    }).ToArray(),
-                    joints = spring.Joints
-                    .Select(joint => new FastSpringBoneJoint
-                    {
-                        Transform = joint.transform,
-                        Joint = new BlittableJoint
-                        {
-                            radius = joint.m_jointRadius,
-                            dragForce = joint.m_dragForce,
-                            gravityDir = joint.m_gravityDir,
-                            gravityPower = joint.m_gravityPower,
-                            stiffnessForce = joint.m_stiffnessForce
-                        },
-                        DefaultLocalRotation = GetOrAddDefaultTransformState(joint.transform).LocalRotation,
-                    }).ToArray(),
-                }).ToArray(),
-                m_externalData);
-        }
-
-        private TransformState GetOrAddDefaultTransformState(Transform tf)
-        {
-            if (m_defaultTransformStates.TryGetValue(tf, out var defaultTransformState))
-            {
-                return defaultTransformState;
-            }
-
-            Debug.LogWarning($"{tf.name} does not exist on load.");
-            return new TransformState(null);
-        }
-
-        private static BlittableColliderType TranslateColliderType(VRM10SpringBoneColliderTypes colliderType)
-        {
-            switch (colliderType)
-            {
-                case VRM10SpringBoneColliderTypes.Sphere:
-                    return BlittableColliderType.Sphere;
-                case VRM10SpringBoneColliderTypes.Capsule:
-                    return BlittableColliderType.Capsule;
-                case VRM10SpringBoneColliderTypes.Plane:
-                    return BlittableColliderType.Plane;
-                case VRM10SpringBoneColliderTypes.SphereInside:
-                    return BlittableColliderType.SphereInside;
-                case VRM10SpringBoneColliderTypes.CapsuleInside:
-                    return BlittableColliderType.CapsuleInside;
-                default:
-                    throw new ArgumentOutOfRangeException();
-            }
-        }
-
         /// <summary>
         /// 毎フレーム関連コンポーネントを解決する
         ///
@@ -241,4 +130,4 @@ namespace UniVRM10
             Expression.Process(eyeDirection);
         }
     }
-}
+}

Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10RuntimeSpringBone .cs

@@ -0,0 +1,165 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using UniGLTF;
+using UniGLTF.Utils;
+using UnityEngine;
+using UniVRM10.FastSpringBones.Blittables;
+using UniVRM10.FastSpringBones.System;
+
+namespace UniVRM10
+{
+    public class Vrm10RuntimeSpringBone : IDisposable
+    {
+        private readonly Vrm10Instance m_instance;
+        private readonly IReadOnlyDictionary<Transform, TransformState> m_defaultTransformStates;
+        private readonly FastSpringBoneService m_fastSpringBoneService;
+        private FastSpringBoneSpring[] m_springs;
+        private Quaternion[] m_initialLocalRotations;
+        private FastSpringBoneBuffer m_fastSpringBoneBuffer;
+        public Vector3 ExternalForce
+        {
+            get => m_fastSpringBoneBuffer.ExternalForce;
+            set => m_fastSpringBoneBuffer.ExternalForce = value;
+        }
+        public bool IsSpringBoneEnabled
+        {
+            get => m_fastSpringBoneBuffer.IsSpringBoneEnabled;
+            set => m_fastSpringBoneBuffer.IsSpringBoneEnabled = value;
+        }
+
+        internal Vrm10RuntimeSpringBone(Vrm10Instance instance)
+        {
+            m_instance = instance;
+
+            var gltfInstance = instance.GetComponent<RuntimeGltfInstance>();
+            if (gltfInstance != null)
+            {
+                // ランタイムインポートならここに到達してゼロコストになる
+                m_defaultTransformStates = gltfInstance.InitialTransformStates;
+            }
+            else
+            {
+                // エディタでプレハブ配置してる奴ならこっちに到達して収集する
+                m_defaultTransformStates = instance.GetComponentsInChildren<Transform>()
+                    .ToDictionary(tf => tf, tf => new TransformState(tf));
+            }
+
+            // NOTE: FastSpringBoneService は UnitTest などでは動作しない
+            if (Application.isPlaying)
+            {
+                m_fastSpringBoneService = FastSpringBoneService.Instance;
+                ReconstructSpringBone();
+            }
+        }
+
+        public void Dispose()
+        {
+            m_fastSpringBoneService.BufferCombiner.Unregister(m_fastSpringBoneBuffer);
+            m_fastSpringBoneBuffer.Dispose();
+        }
+
+        /// <summary>
+        /// このVRMに紐づくSpringBone関連のバッファを再構築する
+        /// ランタイム実行時にSpringBoneに対して変更を行いたいときは、このメソッドを明示的に呼ぶ必要がある
+        /// </summary>
+        public void ReconstructSpringBone()
+        {
+            // rerelase
+            if (m_fastSpringBoneBuffer != null)
+            {
+                m_fastSpringBoneService.BufferCombiner.Unregister(m_fastSpringBoneBuffer);
+                m_fastSpringBoneBuffer.Dispose();
+            }
+
+            // create(Spring情報の再収集。設定変更の反映)
+            m_springs = m_instance.SpringBone.Springs.Select(spring => new FastSpringBoneSpring
+            {
+                center = spring.Center,
+                colliders = spring.ColliderGroups
+                   .SelectMany(group => group.Colliders)
+                   .Select(collider => new FastSpringBoneCollider
+                   {
+                       Transform = collider.transform,
+                       Collider = new BlittableCollider
+                       {
+                           offset = collider.Offset,
+                           radius = collider.Radius,
+                           tailOrNormal = collider.TailOrNormal,
+                           colliderType = TranslateColliderType(collider.ColliderType)
+                       }
+                   }).ToArray(),
+                joints = spring.Joints
+                   .Select(joint => new FastSpringBoneJoint
+                   {
+                       Transform = joint.transform,
+                       Joint = new BlittableJoint
+                       {
+                           radius = joint.m_jointRadius,
+                           dragForce = joint.m_dragForce,
+                           gravityDir = joint.m_gravityDir,
+                           gravityPower = joint.m_gravityPower,
+                           stiffnessForce = joint.m_stiffnessForce
+                       },
+                       DefaultLocalRotation = GetOrAddDefaultTransformState(joint.transform).LocalRotation,
+                   }).ToArray(),
+            }).ToArray();
+
+            // DOTS buffer 構築
+            m_fastSpringBoneBuffer = new FastSpringBoneBuffer(m_springs);
+            m_fastSpringBoneService.BufferCombiner.Register(m_fastSpringBoneBuffer);
+            // reset 用の初期状態の記録
+            m_initialLocalRotations = m_fastSpringBoneBuffer.Transforms.Select(x => x.localRotation).ToArray();
+        }
+
+        private TransformState GetOrAddDefaultTransformState(Transform tf)
+        {
+            if (m_defaultTransformStates.TryGetValue(tf, out var defaultTransformState))
+            {
+                return defaultTransformState;
+            }
+
+            Debug.LogWarning($"{tf.name} does not exist on load.");
+            return new TransformState(null);
+        }
+
+        private static BlittableColliderType TranslateColliderType(VRM10SpringBoneColliderTypes colliderType)
+        {
+            switch (colliderType)
+            {
+                case VRM10SpringBoneColliderTypes.Sphere:
+                    return BlittableColliderType.Sphere;
+                case VRM10SpringBoneColliderTypes.Capsule:
+                    return BlittableColliderType.Capsule;
+                case VRM10SpringBoneColliderTypes.Plane:
+                    return BlittableColliderType.Plane;
+                case VRM10SpringBoneColliderTypes.SphereInside:
+                    return BlittableColliderType.SphereInside;
+                case VRM10SpringBoneColliderTypes.CapsuleInside:
+                    return BlittableColliderType.CapsuleInside;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+
+        public void RestoreInitialTransform()
+        {
+            // Spring の joint に対応する transform の回転を初期状態
+            for (int i = 0; i < m_fastSpringBoneBuffer.Transforms.Length; ++i)
+            {
+                var transform = m_fastSpringBoneBuffer.Transforms[i];
+                transform.localRotation = m_initialLocalRotations[i];
+            }
+
+            // 初期状態にしたtransformを使って spring logic を構築
+            List<BlittableLogic> blittableLogics = new();
+            foreach (var spring in m_springs)
+            {
+                blittableLogics.AddRange(
+                    FastSpringBoneBuffer.LogicFromTransform(m_fastSpringBoneBuffer.Transforms, spring));
+            }
+            // DOTS バッファーを更新
+            m_fastSpringBoneBuffer.SyncAndZeroVelocity(blittableLogics);
+        }
+    }
+}

Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10RuntimeSpringBone .cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2f3312577381e824eac9514c892e3cbc
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/VRM10/Runtime/FastSpringBone/Blittables/BlittableExternalData.cs

@@ -8,5 +8,10 @@ namespace UniVRM10.FastSpringBones.Blittables
     public struct BlittableExternalData
     {
         public Vector3 ExternalForce;
+
+        /// <summary>
+        /// if false, spring bone is paused.
+        /// </summary>
+        public bool IsSpringBoneEnabled;
     }
 }

Assets/VRM10/Runtime/FastSpringBone/InputPorts/FastSpringBoneBuffer.cs

@@ -26,24 +26,39 @@ namespace UniVRM10.FastSpringBones.System
         // NOTE: これは更新頻度が高くバッチングが難しいため、ランダムアクセスを許容してメモリへ直接アクセスする
         // 生のヒープ領域は扱いにくいので長さ1のNativeArrayで代用
         private NativeArray<BlittableExternalData> _externalData;
-
-        public BlittableExternalData ExternalData
+        public Vector3 ExternalForce
         {
-            get => _externalData[0];
-            set => _externalData[0] = value;
+            get => _externalData[0].ExternalForce;
+            set
+            {
+                _externalData[0] = new BlittableExternalData
+                {
+                    ExternalForce = value,
+                    IsSpringBoneEnabled = _externalData[0].IsSpringBoneEnabled,
+                };
+            }
+        }
+        public bool IsSpringBoneEnabled
+        {
+            get => _externalData[0].IsSpringBoneEnabled;
+            set
+            {
+                _externalData[0] = new BlittableExternalData
+                {
+                    ExternalForce = _externalData[0].ExternalForce,
+                    IsSpringBoneEnabled = value,
+                };
+            }
         }
 
-        public unsafe FastSpringBoneBuffer(IReadOnlyList<FastSpringBoneSpring> springs,
-            BlittableExternalData externalData,
-            bool simulateLastBone = false)
+        /// <summary>
+        /// Joint, Collider, Center の Transform のリスト
+        /// - 重複を除去
+        /// </summary>
+        /// <param name="springs"></param>
+        /// <returns></returns>
+        static Transform[] MakeFlattenTransformList(FastSpringBoneSpring[] springs)
         {
-            Profiler.BeginSample("FastSpringBone.ConstructBuffers");
-
-            _externalData = new NativeArray<BlittableExternalData>(1, Allocator.Persistent);
-            ExternalData = externalData;
-
-            // Transformの列挙
-            Profiler.BeginSample("FastSpringBone.ConstructBuffers.ConstructTransformBuffer");
             var transformHashSet = new HashSet<Transform>();
             foreach (var spring in springs)
             {
@@ -60,19 +75,26 @@ namespace UniVRM10.FastSpringBones.System
 
                 if (spring.center != null) transformHashSet.Add(spring.center);
             }
+            var Transforms = transformHashSet.ToArray();
+            return Transforms;
+        }
 
-            var transforms = transformHashSet.ToArray();
-            var transformIndexDictionary = transforms.Select((trs, index) => (trs, index))
-                .ToDictionary(tuple => tuple.trs, tuple => tuple.index);
-            Profiler.EndSample();
-
-            // 各種bufferの構築
-            Profiler.BeginSample("FastSpringBone.ConstructBuffers.ConstructBuffers");
-            var blittableColliders = new List<BlittableCollider>();
-            var blittableJoints = new List<BlittableJoint>();
-            var blittableSprings = new List<BlittableSpring>();
-            var blittableLogics = new List<BlittableLogic>();
+        public unsafe FastSpringBoneBuffer(FastSpringBoneSpring[] springs)
+        {
+            Profiler.BeginSample("FastSpringBone.ConstructBuffers.BufferBuilder");
+            Transforms = MakeFlattenTransformList(springs);
+            _externalData = new NativeArray<BlittableExternalData>(1, Allocator.Persistent);
+            _externalData[0] = new BlittableExternalData
+            {
+                ExternalForce = Vector3.zero,
+                IsSpringBoneEnabled = true,
+            };
 
+            var externalDataPtr = (BlittableExternalData*)_externalData.GetUnsafePtr();
+            List<BlittableSpring> blittableSprings = new();
+            List<BlittableJoint> blittableJoints = new();
+            List<BlittableCollider> blittableColliders = new();
+            List<BlittableLogic> blittableLogics = new();
             foreach (var spring in springs)
             {
                 var blittableSpring = new BlittableSpring
@@ -85,91 +107,95 @@ namespace UniVRM10.FastSpringBones.System
                     logicSpan = new BlittableSpan
                     {
                         startIndex = blittableJoints.Count,
-                        count = simulateLastBone ? spring.joints.Length : spring.joints.Length - 1,
+                        count = spring.joints.Length - 1,
                     },
-                    centerTransformIndex = spring.center ? transformIndexDictionary[spring.center] : -1,
-                    ExternalData = (BlittableExternalData*) _externalData.GetUnsafePtr()
+                    centerTransformIndex = Array.IndexOf(Transforms, spring.center),
+                    ExternalData = externalDataPtr,
                 };
                 blittableSprings.Add(blittableSpring);
 
                 blittableColliders.AddRange(spring.colliders.Select(collider =>
                 {
                     var blittable = collider.Collider;
-                    blittable.transformIndex = transformIndexDictionary[collider.Transform];
+                    blittable.transformIndex = Array.IndexOf(Transforms, collider.Transform);
                     return blittable;
                 }));
                 blittableJoints.AddRange(spring.joints
-                    .Take(simulateLastBone ? spring.joints.Length : spring.joints.Length - 1).Select(joint =>
+                    .Take(spring.joints.Length - 1).Select(joint =>
                     {
                         var blittable = joint.Joint;
                         return blittable;
                     }));
 
-                for (var i = 0; i < (simulateLastBone ? spring.joints.Length : spring.joints.Length - 1); ++i)
-                {
-                    var joint = spring.joints[i];
-                    var tailJoint = i + 1 < spring.joints.Length ? spring.joints[i + 1] : (FastSpringBoneJoint?) null;
-                    var parentJoint = i - 1 >= 0 ? spring.joints[i - 1] : (FastSpringBoneJoint?) null;
-                    var localPosition = Vector3.zero;
-                    if (tailJoint.HasValue)
-                    {
-                        localPosition = tailJoint.Value.Transform.localPosition;
-                    }
-                    else
-                    {
-                        if (parentJoint.HasValue)
-                        {
-                            var delta = joint.Transform.position - parentJoint.Value.Transform.position;
-                            localPosition =
-                                joint.Transform.worldToLocalMatrix.MultiplyPoint(joint.Transform.position + delta);
-                        }
-                        else
-                        {
-                            localPosition = Vector3.down;
-                        }
-                    }
-
-                    var scale = tailJoint.HasValue ? tailJoint.Value.Transform.lossyScale : joint.Transform.lossyScale;
-                    var localChildPosition =
-                        new Vector3(
-                            localPosition.x * scale.x,
-                            localPosition.y * scale.y,
-                            localPosition.z * scale.z
-                        );
-
-                    var worldChildPosition = joint.Transform.TransformPoint(localChildPosition);
-                    var currentTail = spring.center != null
-                        ? spring.center.InverseTransformPoint(worldChildPosition)
-                        : worldChildPosition;
-                    var parent = joint.Transform.parent;
-                    blittableLogics.Add(new BlittableLogic
-                    {
-                        headTransformIndex = transformIndexDictionary[joint.Transform],
-                        parentTransformIndex = parent != null ? transformIndexDictionary[parent] : -1,
-                        currentTail = currentTail,
-                        prevTail = currentTail,
-                        localRotation = joint.DefaultLocalRotation,
-                        boneAxis = localChildPosition.normalized,
-                        length = localChildPosition.magnitude
-                    });
-                }
+                blittableLogics.AddRange(LogicFromTransform(Transforms, spring));
             }
 
-            Profiler.EndSample();
-
-            // 各種bufferの初期化
-            Profiler.BeginSample("FastSpringBone.ConstructBuffers.ConstructNativeArrays");
             Springs = new NativeArray<BlittableSpring>(blittableSprings.ToArray(), Allocator.Persistent);
-
             Joints = new NativeArray<BlittableJoint>(blittableJoints.ToArray(), Allocator.Persistent);
             Colliders = new NativeArray<BlittableCollider>(blittableColliders.ToArray(), Allocator.Persistent);
             Logics = new NativeArray<BlittableLogic>(blittableLogics.ToArray(), Allocator.Persistent);
-
-            BlittableTransforms = new NativeArray<BlittableTransform>(transforms.Length, Allocator.Persistent);
-            Transforms = transforms.ToArray();
+            BlittableTransforms = new NativeArray<BlittableTransform>(Transforms.Length, Allocator.Persistent);
             Profiler.EndSample();
+        }
 
-            Profiler.EndSample();
+        /// <summary>
+        /// Transform の現状から Logic を作成する。
+        /// </summary>
+        /// <param name="Transforms"></param>
+        /// <param name="spring"></param>
+        /// <param name="i">joint index</param>
+        /// <returns></returns>
+        public static IEnumerable<BlittableLogic> LogicFromTransform(Transform[] Transforms, FastSpringBoneSpring spring)
+        {
+            // vrm-1.0 では末端の joint は tail で処理対象でないのに注意!
+            for (int i = 0; i < spring.joints.Length - 1; ++i)
+            {
+                var joint = spring.joints[i];
+                var tailJoint = i + 1 < spring.joints.Length ? spring.joints[i + 1] : (FastSpringBoneJoint?)null;
+                var parentJoint = i - 1 >= 0 ? spring.joints[i - 1] : (FastSpringBoneJoint?)null;
+                var localPosition = Vector3.zero;
+                if (tailJoint.HasValue)
+                {
+                    localPosition = tailJoint.Value.Transform.localPosition;
+                }
+                else
+                {
+                    if (parentJoint.HasValue)
+                    {
+                        var delta = joint.Transform.position - parentJoint.Value.Transform.position;
+                        localPosition =
+                            joint.Transform.worldToLocalMatrix.MultiplyPoint(joint.Transform.position + delta);
+                    }
+                    else
+                    {
+                        localPosition = Vector3.down;
+                    }
+                }
+
+                var scale = tailJoint.HasValue ? tailJoint.Value.Transform.lossyScale : joint.Transform.lossyScale;
+                var localChildPosition = new Vector3(
+                        localPosition.x * scale.x,
+                        localPosition.y * scale.y,
+                        localPosition.z * scale.z
+                    );
+
+                var worldChildPosition = joint.Transform.TransformPoint(localChildPosition);
+                var currentTail = spring.center != null
+                    ? spring.center.InverseTransformPoint(worldChildPosition)
+                    : worldChildPosition;
+                var parent = joint.Transform.parent;
+
+                yield return new BlittableLogic
+                {
+                    headTransformIndex = Array.IndexOf(Transforms, joint.Transform),
+                    parentTransformIndex = Array.IndexOf(Transforms, parent),
+                    currentTail = currentTail,
+                    prevTail = currentTail, // same with currentTail. velocity zero.
+                    localRotation = joint.DefaultLocalRotation,
+                    boneAxis = localChildPosition.normalized,
+                    length = localChildPosition.magnitude
+                };
+            }
         }
 
         public void Dispose()
@@ -183,5 +209,16 @@ namespace UniVRM10.FastSpringBones.System
             Logics.Dispose();
             _externalData.Dispose();
         }
+
+        public void SyncAndZeroVelocity(IReadOnlyList<BlittableLogic> logics)
+        {
+            var dst = Logics;
+            for (int i = 0; i < logics.Count; ++i)
+            {
+                var l = logics[i];
+                l.prevTail = l.currentTail;
+                dst[i] = l;
+            }
+        }
     }
 }

Assets/VRM10/Runtime/FastSpringBone/System/UpdateFastSpringBoneJob.cs

@@ -147,8 +147,16 @@ namespace UniVRM10.FastSpringBones.System
                     headTransform.localRotation = headTransform.rotation;
                 }
 
-                // 値をバッファに戻す
-                Transforms[logic.headTransformIndex + transformIndexOffset] = headTransform;
+                if (spring.ExternalData->IsSpringBoneEnabled)
+                {
+                    // SpringBone の結果を Transform に反映する
+                    Transforms[logic.headTransformIndex + transformIndexOffset] = headTransform;
+                }
+                else
+                {
+                    // SpringBone の結果を Transform に反映しないが logic の更新は継続する。
+                    // 再開したときに暴れない。
+                }
                 Logics[logicIndex] = logic;
             }
         }

Assets/VRM10_Samples/VRM10Viewer/VRM10Loaded.cs

@@ -1,6 +1,5 @@
 using System;
 using UniGLTF;
-using UniGLTF.Utils;
 using UnityEngine;
 
 namespace UniVRM10.VRM10Viewer

Assets/VRM10_Samples/VRM10Viewer/VRM10Viewer.unity

@@ -232,7 +232,7 @@ RectTransform:
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   m_Children: []
   m_Father: {fileID: 339774397}
-  m_RootOrder: 14
+  m_RootOrder: 16
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
@@ -773,7 +773,7 @@ RectTransform:
   m_ConstrainProportionsScale: 0
   m_Children: []
   m_Father: {fileID: 339774397}
-  m_RootOrder: 4
+  m_RootOrder: 3
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   m_AnchorMax: {x: 0, y: 0}
@@ -1236,13 +1236,15 @@ RectTransform:
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   - {fileID: 1791103379}
   - {fileID: 1311520909}
-  - {fileID: 1557052150}
-  - {fileID: 1767706907}
+  - {fileID: 1307084561}
   - {fileID: 974864191}
+  - {fileID: 1767706907}
+  - {fileID: 1557052150}
+  - {fileID: 1728528388}
+  - {fileID: 704896193}
   - {fileID: 597950322}
   - {fileID: 935566651}
   - {fileID: 634488421}
@@ -1822,7 +1824,7 @@ RectTransform:
   m_ConstrainProportionsScale: 0
   m_Children: []
   m_Father: {fileID: 339774397}
-  m_RootOrder: 10
+  m_RootOrder: 12
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
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   m_AnchorMax: {x: 0, y: 0}
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   - {fileID: 154330168}
   - {fileID: 1954133885}
   m_Father: {fileID: 339774397}
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+  m_RootOrder: 18
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@@ -1990,7 +1992,7 @@ RectTransform:
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   - {fileID: 1081455630}
   m_Father: {fileID: 339774397}
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+  m_RootOrder: 14
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   m_AnchorMax: {x: 0, y: 0}
@@ -2246,6 +2248,128 @@ MonoBehaviour:
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+  m_LocalScale: {x: 1, y: 1, z: 1}
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   - {fileID: 1904789319}
   m_Father: {fileID: 339774397}
-  m_RootOrder: 11
+  m_RootOrder: 13
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@@ -3435,7 +3559,7 @@ RectTransform:
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+  m_SizeDelta: {x: 160, y: 20}
+  m_Pivot: {x: 0.5, y: 0.5}
+--- !u!114 &1728528389
+MonoBehaviour:
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+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1728528387}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 9085046f02f69544eb97fd06b6048fe2, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_Navigation:
+    m_Mode: 3
+    m_WrapAround: 0
+    m_SelectOnUp: {fileID: 0}
+    m_SelectOnDown: {fileID: 0}
+    m_SelectOnLeft: {fileID: 0}
+    m_SelectOnRight: {fileID: 0}
+  m_Transition: 1
+  m_Colors:
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+    m_HighlightedColor: {r: 0.9607843, g: 0.9607843, b: 0.9607843, a: 1}
+    m_PressedColor: {r: 0.78431374, g: 0.78431374, b: 0.78431374, a: 1}
+    m_SelectedColor: {r: 0.9607843, g: 0.9607843, b: 0.9607843, a: 1}
+    m_DisabledColor: {r: 0.78431374, g: 0.78431374, b: 0.78431374, a: 0.5019608}
+    m_ColorMultiplier: 1
+    m_FadeDuration: 0.1
+  m_SpriteState:
+    m_HighlightedSprite: {fileID: 0}
+    m_PressedSprite: {fileID: 0}
+    m_SelectedSprite: {fileID: 0}
+    m_DisabledSprite: {fileID: 0}
+  m_AnimationTriggers:
+    m_NormalTrigger: Normal
+    m_HighlightedTrigger: Highlighted
+    m_PressedTrigger: Pressed
+    m_SelectedTrigger: Selected
+    m_DisabledTrigger: Disabled
+  m_Interactable: 1
+  m_TargetGraphic: {fileID: 1519258559}
+  toggleTransition: 1
+  graphic: {fileID: 2055567530}
+  m_Group: {fileID: 0}
+  onValueChanged:
+    m_PersistentCalls:
+      m_Calls: []
+  m_IsOn: 0
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 GameObject:
   m_ObjectHideFlags: 0
@@ -6199,7 +6649,7 @@ RectTransform:
   - {fileID: 62367395}
   - {fileID: 1037763549}
   m_Father: {fileID: 339774397}
-  m_RootOrder: 13
+  m_RootOrder: 15
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
@@ -6373,6 +6823,8 @@ MonoBehaviour:
   m_openMotion: {fileID: 168425996}
   m_pastePose: {fileID: 1307084564}
   m_showBoxMan: {fileID: 1767706908}
+  m_pauseSpringBone: {fileID: 1728528389}
+  m_resetSpringBone: {fileID: 704896194}
   m_enableLipSync: {fileID: 935566650}
   m_enableAutoBlink: {fileID: 634488422}
   m_enableAutoExpression: {fileID: 1767738855}
@@ -6431,7 +6883,7 @@ RectTransform:
   - {fileID: 1166391799}
   - {fileID: 1140410864}
   m_Father: {fileID: 339774397}
-  m_RootOrder: 5
+  m_RootOrder: 4
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
@@ -7243,6 +7695,82 @@ CanvasRenderer:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 2010083453}
   m_CullTransparentMesh: 0
+--- !u!1 &2055567528
+GameObject:
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+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
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+  - component: {fileID: 2055567531}
+  - component: {fileID: 2055567530}
+  m_Layer: 5
+  m_Name: Checkmark
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!224 &2055567529
+RectTransform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 2055567528}
+  m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 1519258558}
+  m_RootOrder: 0
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+  m_AnchorMin: {x: 0.5, y: 0.5}
+  m_AnchorMax: {x: 0.5, y: 0.5}
+  m_AnchoredPosition: {x: 0, y: 0}
+  m_SizeDelta: {x: 20, y: 20}
+  m_Pivot: {x: 0.5, y: 0.5}
+--- !u!114 &2055567530
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 2055567528}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: fe87c0e1cc204ed48ad3b37840f39efc, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
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+  m_Color: {r: 1, g: 1, b: 1, a: 1}
+  m_RaycastTarget: 1
+  m_RaycastPadding: {x: 0, y: 0, z: 0, w: 0}
+  m_Maskable: 1
+  m_OnCullStateChanged:
+    m_PersistentCalls:
+      m_Calls: []
+  m_Sprite: {fileID: 10901, guid: 0000000000000000f000000000000000, type: 0}
+  m_Type: 0
+  m_PreserveAspect: 0
+  m_FillCenter: 1
+  m_FillMethod: 4
+  m_FillAmount: 1
+  m_FillClockwise: 1
+  m_FillOrigin: 0
+  m_UseSpriteMesh: 0
+  m_PixelsPerUnitMultiplier: 1
+--- !u!222 &2055567531
+CanvasRenderer:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 2055567528}
+  m_CullTransparentMesh: 1
 --- !u!1 &2090837016
 GameObject:
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Assets/VRM10_Samples/VRM10Viewer/VRM10ViewerUI.cs

@@ -27,6 +27,12 @@ namespace UniVRM10.VRM10Viewer
         [SerializeField]
         Toggle m_showBoxMan = default;
 
+        [SerializeField]
+        Toggle m_pauseSpringBone = default;
+
+        [SerializeField]
+        Button m_resetSpringBone = default;
+
         [SerializeField]
         Toggle m_enableLipSync = default;
 
@@ -252,6 +258,7 @@ namespace UniVRM10.VRM10Viewer
             m_openModel = buttons.First(x => x.name == "OpenModel");
             m_openMotion = buttons.First(x => x.name == "OpenMotion");
             m_pastePose = buttons.First(x => x.name == "PastePose");
+            m_resetSpringBone = buttons.First(x => x.name == "ResetSpringBone");
 
 #if UNITY_2022_3_OR_NEWER
             var toggles = GameObject.FindObjectsByType<Toggle>(FindObjectsSortMode.InstanceID);
@@ -259,6 +266,7 @@ namespace UniVRM10.VRM10Viewer
             var toggles = GameObject.FindObjectsOfType<Toggle>();
 #endif
             m_showBoxMan = toggles.First(x => x.name == "ShowBoxMan");
+            m_pauseSpringBone = toggles.First(x => x.name == "PauseSpringBone");
             m_enableLipSync = toggles.First(x => x.name == "EnableLipSync");
             m_enableAutoBlink = toggles.First(x => x.name == "EnableAutoBlink");
             m_enableAutoExpression = toggles.First(x => x.name == "EnableAutoExpression");
@@ -347,6 +355,7 @@ namespace UniVRM10.VRM10Viewer
             m_openModel.onClick.AddListener(OnOpenModelClicked);
             m_openMotion.onClick.AddListener(OnOpenMotionClicked);
             m_pastePose.onClick.AddListener(OnPastePoseClicked);
+            m_resetSpringBone.onClick.AddListener(OnResetSpringBoneClicked);
 
             // load initial bvh
             if (m_motion != null)
@@ -393,18 +402,20 @@ namespace UniVRM10.VRM10Viewer
                 m_loaded.EnableLipSyncValue = m_enableLipSync.isOn;
                 m_loaded.EnableBlinkValue = m_enableAutoBlink.isOn;
                 m_loaded.EnableAutoExpressionValue = m_enableAutoExpression.isOn;
-            }
 
-            if (m_loaded != null)
-            {
-                if (m_ui.IsTPose)
+                if (m_loaded.Runtime != null)
                 {
-                    m_loaded.Runtime.VrmAnimation = TPose;
-                }
-                else if (Motion != null)
-                {
-                    // Automatically retarget in Vrm10Runtime.Process
-                    m_loaded.Runtime.VrmAnimation = Motion;
+                    if (m_ui.IsTPose)
+                    {
+                        m_loaded.Runtime.VrmAnimation = TPose;
+                    }
+                    else if (Motion != null)
+                    {
+                        // Automatically retarget in Vrm10Runtime.Process
+                        m_loaded.Runtime.VrmAnimation = Motion;
+                    }
+
+                    m_loaded.Runtime.SpringBone.IsSpringBoneEnabled = !m_pauseSpringBone.isOn;
                 }
             }
         }
@@ -484,6 +495,17 @@ namespace UniVRM10.VRM10Viewer
             }
         }
 
+        void OnResetSpringBoneClicked()
+        {
+            if (m_loaded != null)
+            {
+                if (m_loaded.Runtime != null)
+                {
+                    m_loaded.Runtime.SpringBone.RestoreInitialTransform();
+                }
+            }
+        }
+
         static IMaterialDescriptorGenerator GetVrmMaterialDescriptorGenerator(bool useUrp)
         {
             if (useUrp)