Add ultimate xr

Assets/UltimateXR/Runtime/Scripts/Animation/IK/UxrBodyIK.IndependentBoneInfo.cs

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+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="UxrBodyIK.IndependentBoneInfo.cs" company="VRMADA">
+//   Copyright (c) VRMADA, All rights reserved.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+using UnityEngine;
+
+namespace UltimateXR.Animation.IK
+{
+    public sealed partial class UxrBodyIK
+    {
+        #region Private Types & Data
+
+        /// <summary>
+        ///     Independent bones are bones that are driven externally and not using IK, such as the hands (wrist bones), which are
+        ///     driven by the tracked input controllers. They need to be kept track of when parent bones are modified by Inverse
+        ///     Kinematics to make sure that they are kept in the same place afterwards. Otherwise due to parenting the position
+        ///     they should have would change.
+        /// </summary>
+        private class IndependentBoneInfo
+        {
+            #region Public Types & Data
+
+            /// <summary>
+            ///     Gets the bone transform.
+            /// </summary>
+            public Transform Transform { get; }
+
+            /// <summary>
+            ///     Gets or sets the correct current position.
+            /// </summary>
+            public Vector3 Position { get; set; }
+
+            /// <summary>
+            ///     Gets or sets the correct current position.
+            /// </summary>
+            public Quaternion Rotation { get; set; }
+
+            #endregion
+
+            #region Constructors & Finalizer
+
+            /// <summary>
+            ///     Constructor.
+            /// </summary>
+            /// <param name="transform">Bone transform</param>
+            public IndependentBoneInfo(Transform transform)
+            {
+                Transform = transform;
+                Position  = transform.position;
+                Rotation  = transform.rotation;
+            }
+
+            #endregion
+        }
+
+        #endregion
+    }
+}