Initial Commit

2025-07-04 20:33:06 +03:00
commit 8f09347ae0
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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * Licensed under the Oculus SDK License Agreement (the "License");
+ * you may not use the Oculus SDK except in compliance with the License,
+ * which is provided at the time of installation or download, or which
+ * otherwise accompanies this software in either electronic or hard copy form.
+ *
+ * You may obtain a copy of the License at
+ *
+ * https://developer.oculus.com/licenses/oculussdk/
+ *
+ * Unless required by applicable law or agreed to in writing, the Oculus SDK
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using Oculus.Interaction.Input;
+using UnityEngine;
+
+namespace Oculus.Interaction
+{
+    /// <summary>
+    /// Updates its transform to the estimated shoulder position and rotation.
+    /// Estimated pose is based on an offset from the head, taking in count
+    /// just the rotation Yaw. Hand is required to know not just the handedness
+    /// but also alter the scale of the offset.
+    /// </summary>
+    public class ShoulderEstimatePosition : MonoBehaviour
+    {
+        [SerializeField, Interface(typeof(IHmd))]
+        private UnityEngine.Object _hmd;
+        private IHmd Hmd { get; set; }
+
+        [SerializeField, Interface(typeof(IHand))]
+        private UnityEngine.Object _hand;
+        private IHand Hand { get; set; }
+
+        private static readonly Vector3 ShoulderOffset = new Vector3(0.13f, -0.25f, -0.13f);
+
+        protected bool _started;
+
+        protected virtual void Awake()
+        {
+            Hmd = _hmd as IHmd;
+            Hand = _hand as IHand;
+        }
+
+        protected virtual void Start()
+        {
+            this.BeginStart(ref _started);
+            this.AssertField(Hmd, nameof(_hmd));
+            this.AssertField(Hand, nameof(_hand));
+            this.EndStart(ref _started);
+        }
+
+        protected virtual void OnEnable()
+        {
+            if (_started)
+            {
+                Hmd.WhenUpdated += HandleHmdUpdated;
+            }
+        }
+
+        protected virtual void OnDisable()
+        {
+            if (_started)
+            {
+                Hmd.WhenUpdated -= HandleHmdUpdated;
+            }
+        }
+
+        protected virtual void HandleHmdUpdated()
+        {
+            Hmd.TryGetRootPose(out Pose headPose);
+            Quaternion shoulderYaw = Quaternion.Euler(0f, headPose.rotation.eulerAngles.y, 0f);
+            Vector3 offset = ShoulderOffset * Hand.Scale;
+            if (Hand.Handedness == Handedness.Left)
+            {
+                offset.x = -offset.x;
+            }
+            Vector3 projectionOrigin = headPose.position + shoulderYaw * offset;
+
+            this.transform.SetPositionAndRotation(projectionOrigin, shoulderYaw);
+        }
+
+        #region Inject
+
+        public void InjectAllShoulderPosition(IHmd hmd,
+            IHand hand)
+        {
+            InjectHmd(hmd);
+            InjectHand(hand);
+        }
+
+        public void InjectHmd(IHmd hmd)
+        {
+            _hmd = hmd as UnityEngine.Object;
+            Hmd = hmd;
+        }
+
+        public void InjectHand(IHand hand)
+        {
+            _hand = hand as UnityEngine.Object;
+            Hand = hand;
+        }
+
+        #endregion
+    }
+}