Initial Commit

Library/PackageCache/com.unity.timeline@1.5.4/Runtime/Events/Marker.cs

@@ -0,0 +1,55 @@
+using System;
+
+namespace UnityEngine.Timeline
+{
+    /// <summary>
+    /// Use Marker as a base class when creating a custom marker.
+    /// </summary>
+    /// <remarks>
+    /// A marker is a point in time.
+    /// </remarks>
+    public abstract class Marker : ScriptableObject, IMarker
+    {
+        [SerializeField, TimeField, Tooltip("Time for the marker")] double m_Time;
+
+        /// <inheritdoc/>
+        public TrackAsset parent { get; private set; }
+
+        /// <inheritdoc/>
+        /// <remarks>
+        /// The marker time cannot be negative.
+        /// </remarks>
+        public double time
+        {
+            get { return m_Time; }
+            set { m_Time = Math.Max(value, 0); }
+        }
+
+        /// <inheritdoc/>
+        void IMarker.Initialize(TrackAsset parentTrack)
+        {
+            // We only really want to update the parent when the object is first deserialized
+            // If not a cloned track would "steal" the source's markers
+            if (parent == null)
+            {
+                parent = parentTrack;
+                try
+                {
+                    OnInitialize(parentTrack);
+                }
+                catch (Exception e)
+                {
+                    Debug.LogError(e.Message, this);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Override this method to receive a callback when the marker is initialized.
+        /// </summary>
+        /// <param name="aPent">The track that contains the marker.</param>
+        public virtual void OnInitialize(TrackAsset aPent)
+        {
+        }
+    }
+}