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Assets/Oculus/Interaction/Runtime/Scripts/Body/SkeletonDebugGizmos.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 UnityEngine;
+using Oculus.Interaction.Body.Input;
+
+namespace Oculus.Interaction.Body
+{
+    public abstract class SkeletonDebugGizmos : MonoBehaviour
+    {
+        [System.Flags]
+        public enum VisibilityFlags
+        {
+            Joints = 1 << 0,
+            Axes = 1 << 1,
+            Bones = 1 << 2,
+        }
+
+        [Tooltip("Which components of the skeleton will be visualized.")]
+        [SerializeField]
+        private VisibilityFlags _visibility =
+            VisibilityFlags.Axes | VisibilityFlags.Joints;
+
+        [Tooltip("The joint debug spheres will be drawn with this color.")]
+        [SerializeField]
+        private Color _jointColor = Color.white;
+
+        [Tooltip("The bone connecting lines will be drawn with this color.")]
+        [SerializeField]
+        private Color _boneColor = Color.gray;
+
+        [Tooltip("The radius of the joint spheres and the thickness " +
+            "of the bone and axis lines.")]
+        [SerializeField]
+        private float _radius = 0.02f;
+
+        public float Radius
+        {
+            get => _radius;
+            set => _radius = value;
+        }
+
+        public VisibilityFlags Visibility
+        {
+            get => _visibility;
+            set => _visibility = value;
+        }
+
+        public Color JointColor
+        {
+            get => _jointColor;
+            set => _jointColor = value;
+        }
+
+        public Color BoneColor
+        {
+            get => _boneColor;
+            set => _boneColor = value;
+        }
+
+        private float LineWidth => _radius / 2f;
+
+        protected abstract bool TryGetWorldJointPose(BodyJointId jointId, out Pose pose);
+
+        protected abstract bool TryGetParentJointId(BodyJointId jointId, out BodyJointId parent);
+
+        protected bool HasNegativeScale => transform.lossyScale.x < 0 ||
+                                           transform.lossyScale.y < 0 ||
+                                           transform.lossyScale.z < 0;
+
+        protected void Draw(BodyJointId joint, VisibilityFlags visibility)
+        {
+            if (TryGetWorldJointPose(joint, out Pose pose))
+            {
+                if (visibility.HasFlag(VisibilityFlags.Axes))
+                {
+                    DebugGizmos.LineWidth = LineWidth;
+                    DebugGizmos.DrawAxis(pose, _radius);
+                }
+                if (visibility.HasFlag(VisibilityFlags.Joints))
+                {
+                    DebugGizmos.Color = _jointColor;
+                    DebugGizmos.LineWidth = _radius;
+                    DebugGizmos.DrawPoint(pose.position);
+                }
+                if (visibility.HasFlag(VisibilityFlags.Bones) &&
+                    TryGetParentJointId(joint, out BodyJointId parent) &&
+                    TryGetWorldJointPose(parent, out Pose parentPose))
+                {
+                    DebugGizmos.Color = _boneColor;
+                    DebugGizmos.LineWidth = LineWidth;
+                    DebugGizmos.DrawLine(pose.position, parentPose.position);
+                }
+            }
+        }
+    }
+}