Initial Commit

Assets/Oculus/Interaction/Runtime/Scripts/DistanceGrab/Visuals/ReticleGhostDrawer.cs

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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.Grab;
+using Oculus.Interaction.HandGrab;
+using Oculus.Interaction.Input;
+using UnityEngine;
+using UnityEngine.Serialization;
+
+namespace Oculus.Interaction.DistanceReticles
+{
+    public class ReticleGhostDrawer : InteractorReticle<ReticleDataGhost>
+    {
+        [FormerlySerializedAs("_handGrabber")]
+        [SerializeField, Interface(typeof(IHandGrabInteractor), typeof(IInteractorView))]
+        private UnityEngine.Object _handGrabInteractor;
+        private IHandGrabInteractor HandGrabInteractor { get; set; }
+
+        [FormerlySerializedAs("_modifier")]
+        [SerializeField]
+        private SyntheticHand _syntheticHand;
+
+        [SerializeField, Interface(typeof(IHandVisual))]
+        [FormerlySerializedAs("_visualHand")]
+        private UnityEngine.Object _handVisual;
+
+        private IHandVisual HandVisual;
+
+        private bool _areFingersFree = true;
+        private bool _isWristFree = true;
+
+        protected override IInteractorView Interactor { get; set; }
+        protected override Component InteractableComponent => HandGrabInteractor.TargetInteractable as Component;
+
+        private ITrackingToWorldTransformer Transformer;
+
+        protected virtual void Awake()
+        {
+            HandVisual = _handVisual as IHandVisual;
+            HandGrabInteractor = _handGrabInteractor as IHandGrabInteractor;
+            Interactor = _handGrabInteractor as IInteractorView;
+        }
+
+        protected override void Start()
+        {
+            this.BeginStart(ref _started, () => base.Start());
+            this.AssertField(HandGrabInteractor, nameof(_handGrabInteractor));
+            this.AssertField(Interactor, nameof(_handGrabInteractor));
+            this.AssertField(HandVisual, nameof(HandVisual));
+            this.AssertField(_syntheticHand, nameof(_syntheticHand));
+            Transformer = _syntheticHand.GetData().Config.TrackingToWorldTransformer;
+
+            Hide();
+            this.EndStart(ref _started);
+        }
+
+        private void UpdateHandPose(IHandGrabState snapper)
+        {
+            HandGrabTarget snap = snapper.HandGrabTarget;
+
+            if (snap == null)
+            {
+                FreeFingers();
+                FreeWrist();
+                return;
+            }
+
+            if (snap.HandPose != null)
+            {
+                UpdateFingers(snap.HandPose, snapper.GrabbingFingers());
+                _areFingersFree = false;
+            }
+            else
+            {
+                FreeFingers();
+            }
+
+            Pose wristLocalPose = snapper.GetVisualWristPose();
+            Pose wristPose = Transformer != null
+                ? Transformer.ToTrackingPose(wristLocalPose)
+                : wristLocalPose;
+            _syntheticHand.LockWristPose(wristPose, 1f);
+            _isWristFree = false;
+        }
+
+        private void UpdateFingers(HandPose handPose, HandFingerFlags grabbingFingers)
+        {
+            Quaternion[] desiredRotations = handPose.JointRotations;
+            _syntheticHand.OverrideAllJoints(desiredRotations, 1f);
+
+            for (int fingerIndex = 0; fingerIndex < Constants.NUM_FINGERS; fingerIndex++)
+            {
+                int fingerFlag = 1 << fingerIndex;
+                JointFreedom fingerFreedom = handPose.FingersFreedom[fingerIndex];
+                if (fingerFreedom == JointFreedom.Constrained
+                    && ((int)grabbingFingers & fingerFlag) != 0)
+                {
+                    fingerFreedom = JointFreedom.Locked;
+                }
+                _syntheticHand.SetFingerFreedom((HandFinger)fingerIndex, fingerFreedom);
+            }
+        }
+
+        private bool FreeFingers()
+        {
+            if (!_areFingersFree)
+            {
+                _syntheticHand.FreeAllJoints();
+                _areFingersFree = true;
+                return true;
+            }
+            return false;
+        }
+
+        private bool FreeWrist()
+        {
+            if (!_isWristFree)
+            {
+                _syntheticHand.FreeWrist();
+                _isWristFree = true;
+                return true;
+            }
+            return false;
+        }
+
+        protected override void Align(ReticleDataGhost data)
+        {
+            UpdateHandPose(HandGrabInteractor);
+            _syntheticHand.MarkInputDataRequiresUpdate();
+        }
+
+        protected override void Draw(ReticleDataGhost data)
+        {
+            HandVisual.ForceOffVisibility = false;
+        }
+
+        protected override void Hide()
+        {
+            HandVisual.ForceOffVisibility = true;
+            _syntheticHand.MarkInputDataRequiresUpdate();
+        }
+
+        #region Inject
+
+        public void InjectAllReticleGhostDrawer(IHandGrabInteractor handGrabInteractor,
+            SyntheticHand syntheticHand, IHandVisual visualHand)
+        {
+            InjectHandGrabInteractor(handGrabInteractor);
+            InjectSyntheticHand(syntheticHand);
+            InjectVisualHand(visualHand);
+        }
+
+        public void InjectHandGrabInteractor(IHandGrabInteractor handGrabInteractor)
+        {
+            _handGrabInteractor = handGrabInteractor as UnityEngine.Object;
+            HandGrabInteractor = handGrabInteractor;
+            Interactor = handGrabInteractor as IInteractorView;
+        }
+
+        public void InjectSyntheticHand(SyntheticHand syntheticHand)
+        {
+            _syntheticHand = syntheticHand;
+        }
+
+        public void InjectVisualHand(IHandVisual visualHand)
+        {
+            _handVisual = visualHand as UnityEngine.Object;
+            HandVisual = visualHand;
+        }
+        #endregion
+    }
+}