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Initial commit
2019-09-29 19:40:54 -04:00
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TrackAssetãusing System;
using System.Collections.Generic;
using System.IO;
using UnityEngine.Animations;
using UnityEngine.Playables;
namespace UnityEngine.Timeline
{
/// <summary>
/// A PlayableAsset representing a track inside a timeline.
/// </summary>
[Serializable]
[IgnoreOnPlayableTrack]
public abstract partial class TrackAsset : PlayableAsset, IPropertyPreview, ICurvesOwner
{
internal const string kDefaultCurvesName = "Track Parameters";
internal static event Action<TimelineClip, GameObject, Playable> OnClipPlayableCreate;
internal static event Action<TrackAsset, GameObject, Playable> OnTrackAnimationPlayableCreate;
[SerializeField, HideInInspector] bool m_Locked;
[SerializeField, HideInInspector] bool m_Muted;
[SerializeField, HideInInspector] string m_CustomPlayableFullTypename = string.Empty;
[SerializeField, HideInInspector] AnimationClip m_Curves;
[SerializeField, HideInInspector] PlayableAsset m_Parent;
[SerializeField, HideInInspector] List<ScriptableObject> m_Children;
[NonSerialized] int m_ItemsHash;
[NonSerialized] TimelineClip[] m_ClipsCache;
DiscreteTime m_Start;
DiscreteTime m_End;
bool m_CacheSorted;
bool? m_SupportsNotifications;
static TrackAsset[] s_EmptyCache = new TrackAsset[0];
IEnumerable<TrackAsset> m_ChildTrackCache;
static Dictionary<Type, TrackBindingTypeAttribute> s_TrackBindingTypeAttributeCache = new Dictionary<Type, TrackBindingTypeAttribute>();
[SerializeField, HideInInspector] protected internal List<TimelineClip> m_Clips = new List<TimelineClip>();
[SerializeField, HideInInspector] MarkerList m_Markers = new MarkerList(0);
#if UNITY_EDITOR
internal int DirtyIndex { get; private set; }
internal void MarkDirty()
{
DirtyIndex++;
foreach (var clip in GetClips())
{
if (clip != null)
clip.MarkDirty();
}
}
#endif
/// <summary>
/// The start time, in seconds, of this track
/// </summary>
public double start
{
get
{
UpdateDuration();
return (double)m_Start;
}
}
/// <summary>
/// The end time, in seconds, of this track
/// </summary>
public double end
{
get
{
UpdateDuration();
return (double)m_End;
}
}
/// <summary>
/// The length, in seconds, of this track
/// </summary>
public sealed override double duration
{
get
{
UpdateDuration();
return (double)(m_End - m_Start);
}
}
/// <summary>
/// Whether the track is muted or not.
/// </summary>
/// <remarks>
/// A muted track is excluded from the generated PlayableGraph
/// </remarks>
public bool muted
{
get { return m_Muted; }
set { m_Muted = value; }
}
/// <summary>
/// The muted state of a track.
/// </summary>
/// <remarks>
/// A track is also muted when one of its parent tracks are muted.
/// </remarks>
public bool mutedInHierarchy
{
get
{
if (muted)
return true;
TrackAsset p = this;
while (p.parent as TrackAsset != null)
{
p = (TrackAsset)p.parent;
if (p as GroupTrack != null)
return p.mutedInHierarchy;
}
return false;
}
}
/// <summary>
/// The TimelineAsset that this track belongs to.
/// </summary>
public TimelineAsset timelineAsset
{
get
{
var node = this;
while (node != null)
{
if (node.parent == null)
return null;
var seq = node.parent as TimelineAsset;
if (seq != null)
return seq;
node = node.parent as TrackAsset;
}
return null;
}
}
/// <summary>
/// The owner of this track.
/// </summary>
/// <remarks>
/// If this track is a subtrack, the parent is a TrackAsset. Otherwise the parent is a TimelineAsset.
/// </remarks>
public PlayableAsset parent
{
get { return m_Parent; }
internal set { m_Parent = value; }
}
/// <summary>
/// A list of clips owned by this track
/// </summary>
/// <returns>Returns an enumerable list of clips owned by the track.</returns>
public IEnumerable<TimelineClip> GetClips()
{
return clips;
}
internal TimelineClip[] clips
{
get
{
if (m_Clips == null)
m_Clips = new List<TimelineClip>();
if (m_ClipsCache == null)
{
m_CacheSorted = false;
m_ClipsCache = m_Clips.ToArray();
}
return m_ClipsCache;
}
}
/// <summary>
/// Whether this track is considered empty.
/// </summary>
/// <remarks>
/// A track is considered empty when it does not contain a TimelineClip, Marker, or Curve.
/// </remarks>
/// <remarks>
/// Empty tracks are not included in the playable graph.
/// </remarks>
public virtual bool isEmpty
{
get { return !hasClips && !hasCurves && GetMarkerCount() == 0; }
}
/// <summary>
/// Whether this track contains any TimelineClip.
/// </summary>
public bool hasClips
{
get { return m_Clips != null && m_Clips.Count != 0; }
}
/// <summary>
/// Whether this track contains animated properties for the attached PlayableAsset.
/// </summary>
/// <remarks>
/// This property is false if the curves property is null or if it contains no information.
/// </remarks>
public bool hasCurves
{
get { return m_Curves != null && !m_Curves.empty; }
}
/// <summary>
/// Returns whether this track is a subtrack
/// </summary>
public bool isSubTrack
{
get
{
var owner = parent as TrackAsset;
return owner != null && owner.GetType() == GetType();
}
}
/// <summary>
/// Returns a description of the PlayableOutputs that will be created by this track.
/// </summary>
public override IEnumerable<PlayableBinding> outputs
{
get
{
TrackBindingTypeAttribute attribute;
if (!s_TrackBindingTypeAttributeCache.TryGetValue(GetType(), out attribute))
{
attribute = (TrackBindingTypeAttribute)Attribute.GetCustomAttribute(GetType(), typeof(TrackBindingTypeAttribute));
s_TrackBindingTypeAttributeCache.Add(GetType(), attribute);
}
var trackBindingType = attribute != null ? attribute.type : null;
yield return ScriptPlayableBinding.Create(name, this, trackBindingType);
}
}
/// <summary>
/// The list of subtracks or child tracks attached to this track.
/// </summary>
/// <returns>Returns an enumerable list of child tracks owned directly by this track.</returns>
/// <remarks>
/// In the case of GroupTracks, this returns all tracks contained in the group. This will return the all subtracks or override tracks, if supported by the track.
/// </remarks>
public IEnumerable<TrackAsset> GetChildTracks()
{
UpdateChildTrackCache();
return m_ChildTrackCache;
}
internal string customPlayableTypename
{
get { return m_CustomPlayableFullTypename; }
set { m_CustomPlayableFullTypename = value; }
}
/// <summary>
/// An animation clip storing animated properties of the attached PlayableAsset
/// </summary>
public AnimationClip curves
{
get { return m_Curves; }
internal set { m_Curves = value; }
}
string ICurvesOwner.defaultCurvesName
{
get { return kDefaultCurvesName; }
}
Object ICurvesOwner.asset
{
get { return this; }
}
Object ICurvesOwner.assetOwner
{
get { return timelineAsset; }
}
TrackAsset ICurvesOwner.targetTrack
{
get { return this; }
}
// for UI where we need to detect 'null' objects
internal List<ScriptableObject> subTracksObjects
{
get { return m_Children; }
}
/// <summary>
/// The local locked state of the track.
/// </summary>
/// <remarks>
/// Note that locking a track only affects operations in the Timeline Editor. It does not prevent other API calls from changing a track or it's clips.
///
/// This returns or sets the local locked state of the track. A track may still be locked for editing because one or more of it's parent tracks in the hierarchy is locked. Use lockedInHierarchy to test if a track is locked because of it's own locked state or because of a parent tracks locked state.
/// </remarks>
public bool locked
{
get { return m_Locked; }
set { m_Locked = value; }
}
/// <summary>
/// The locked state of a track. (RO)
/// </summary>
/// <remarks>
/// Note that locking a track only affects operations in the Timeline Editor. It does not prevent other API calls from changing a track or it's clips.
///
/// This indicates whether a track is locked in the Timeline Editor because either it's locked property is enabled or a parent track is locked.
/// </remarks>
public bool lockedInHierarchy
{
get { return locked || parentLocked; }
}
internal bool parentLocked
{
get
{
var parentTrack = parent as TrackAsset;
return parentTrack != null && parentTrack.lockedInHierarchy;
}
}
/// <summary>
/// Indicates if a track accepts markers that implement <see cref="UnityEngine.Playables.INotification"/>.
/// </summary>
/// <remarks>
/// Only tracks with a bound object of type <see cref="UnityEngine.GameObject"/> or <see cref="UnityEngine.Component"/> can accept notifications.
/// </remarks>
public bool supportsNotifications
{
get
{
if (!m_SupportsNotifications.HasValue)
{
m_SupportsNotifications = NotificationUtilities.TrackTypeSupportsNotifications(GetType());
}
return m_SupportsNotifications.Value;
}
}
void __internalAwake() //do not use OnEnable, since users will want it to initialize their class
{
if (m_Clips == null)
m_Clips = new List<TimelineClip>();
m_ChildTrackCache = null;
if (m_Children == null)
m_Children = new List<ScriptableObject>();
#if UNITY_EDITOR
// validate the array. DON'T remove Unity null objects, just actual null objects
for (int i = m_Children.Count - 1; i >= 0; i--)
{
object o = m_Children[i];
if (o == null)
{
Debug.LogWarning("Empty child track found while loading timeline. It will be removed.");
m_Children.RemoveAt(i);
}
}
#endif
}
/// <summary>
/// Creates an AnimationClip to store animated properties for the attached PlayableAsset.
/// </summary>
/// <remarks>
/// If curves already exists for this track, this method produces no result regardless of
/// the value specified for curvesClipName.
/// </remarks>
/// <remarks>
/// When used from the editor, this method attempts to save the created curves clip to the TimelineAsset.
/// The TimelineAsset must already exist in the AssetDatabase to save the curves clip. If the TimelineAsset
/// does not exist, the curves clip is still created but it is not saved.
/// </remarks>
/// <param name="curvesClipName">
/// The name of the AnimationClip to create.
/// This method does not ensure unique names. If you want a unique clip name, you must provide one.
/// See ObjectNames.GetUniqueName for information on a method that creates unique names.
/// </param>
public void CreateCurves(string curvesClipName)
{
if (m_Curves != null)
return;
m_Curves = TimelineCreateUtilities.CreateAnimationClipForTrack(string.IsNullOrEmpty(curvesClipName) ? kDefaultCurvesName : curvesClipName, this, true);
}
/// <summary>
/// Creates a mixer used to blend playables generated by clips on the track.
/// </summary>
/// <param name="graph">The graph to inject playables into</param>
/// <param name="go">The GameObject that requested the graph.</param>
/// <param name="inputCount">The number of playables from clips that will be inputs to the returned mixer</param>
/// <returns>A handle to the [[Playable]] representing the mixer.</returns>
/// <remarks>
/// Override this method to provide a custom playable for mixing clips on a graph.
/// </remarks>
public virtual Playable CreateTrackMixer(PlayableGraph graph, GameObject go, int inputCount)
{
return Playable.Create(graph, inputCount);
}
/// <summary>
/// Overrides PlayableAsset.CreatePlayable(). Not used in Timeline.
/// </summary>
public sealed override Playable CreatePlayable(PlayableGraph graph, GameObject go)
{
return Playable.Null;
}
/// <summary>
/// Creates a TimelineClip on this track.
/// </summary>
/// <returns>Returns a new TimelineClip that is attached to the track.</returns>
/// <remarks>
/// The type of the playable asset attached to the clip is determined by TrackClip attributes that decorate the TrackAsset derived class
/// </remarks>
public TimelineClip CreateDefaultClip()
{
var trackClipTypeAttributes = GetType().GetCustomAttributes(typeof(TrackClipTypeAttribute), true);
Type playableAssetType = null;
foreach (var trackClipTypeAttribute in trackClipTypeAttributes)
{
var attribute = trackClipTypeAttribute as TrackClipTypeAttribute;
if (attribute != null && typeof(IPlayableAsset).IsAssignableFrom(attribute.inspectedType) && typeof(ScriptableObject).IsAssignableFrom(attribute.inspectedType))
{
playableAssetType = attribute.inspectedType;
break;
}
}
if (playableAssetType == null)
{
Debug.LogWarning("Cannot create a default clip for type " + GetType());
return null;
}
return CreateAndAddNewClipOfType(playableAssetType);
}
/// <summary>
/// Creates a clip on the track with a playable asset attached, whose derived type is specified by T
/// </summary>
/// <typeparam name="T">A PlayableAsset derived type</typeparam>
/// <returns>Returns a TimelineClip whose asset is of type T</returns>
/// <remarks>
/// Throws an InvalidOperationException if the specified type is not supported by the track.
/// Supported types are determined by TrackClip attributes that decorate the TrackAsset derived class
/// </remarks>
public TimelineClip CreateClip<T>() where T : ScriptableObject, IPlayableAsset
{
return CreateClip(typeof(T));
}
/// <summary>
/// Creates a marker of the requested type, at a specific time, and adds the marker to the current asset.
/// </summary>
/// <param name="type">The type of marker.</param>
/// <param name="time">The time where the marker is created.</param>
/// <returns>Returns the instance of the created marker.</returns>
/// <remarks>
/// All markers that implement IMarker and inherit from <see cref="UnityEngine.ScriptableObject"/> are supported.
/// Markers that implement the INotification interface cannot be added to tracks that do not support notifications.
/// CreateMarker will throw an <code>InvalidOperationException</code> with tracks that do not support notifications if <code>type</code> implements the INotification interface.
/// </remarks>
/// <seealso cref="UnityEngine.Timeline.Marker"/>
/// <seealso cref="UnityEngine.Timeline.TrackAsset.supportsNotifications"/>
public IMarker CreateMarker(Type type, double time)
{
return m_Markers.CreateMarker(type, time, this);
}
/// <summary>
/// Creates a marker of the requested type, at a specific time, and adds the marker to the current asset.
/// </summary>
/// <param name="time">The time where the marker is created.</param>
/// <returns>Returns the instance of the created marker.</returns>
/// <remarks>
/// All markers that implement IMarker and inherit from <see cref="UnityEngine.ScriptableObject"/> are supported.
/// CreateMarker will throw an <code>InvalidOperationException</code> with tracks that do not support notifications if <code>T</code> implements the INotification interface.
/// </remarks>
/// <seealso cref="UnityEngine.Timeline.Marker"/>
/// <seealso cref="UnityEngine.Timeline.TrackAsset.supportsNotifications"/>
public T CreateMarker<T>(double time) where T : ScriptableObject, IMarker
{
return (T)CreateMarker(typeof(T), time);
}
/// <summary>
/// Removes a marker from the current asset.
/// </summary>
/// <param name="marker">The marker instance to be removed.</param>
/// <returns>Returns true if the marker instance was successfully removed. Returns false otherwise.</returns>
public bool DeleteMarker(IMarker marker)
{
return m_Markers.Remove(marker);
}
/// <summary>
/// Returns an enumerable list of markers on the current asset.
/// </summary>
/// <returns>The list of markers on the asset.
/// </returns>
public IEnumerable<IMarker> GetMarkers()
{
return m_Markers.GetMarkers();
}
/// <summary>
/// Returns the number of markers on the current asset.
/// </summary>
/// <returns>The number of markers.</returns>
public int GetMarkerCount()
{
return m_Markers.Count;
}
/// <summary>
/// Returns the marker at a given position, on the current asset.
/// </summary>
/// <param name="idx">The index of the marker to be returned.</param>
/// <returns>The marker.</returns>
/// <remarks>The ordering of the markers is not guaranteed.
/// </remarks>
public IMarker GetMarker(int idx)
{
return m_Markers[idx];
}
internal TimelineClip CreateClip(System.Type requestedType)
{
if (ValidateClipType(requestedType))
return CreateAndAddNewClipOfType(requestedType);
throw new InvalidOperationException("Clips of type " + requestedType + " are not permitted on tracks of type " + GetType());
}
internal TimelineClip CreateAndAddNewClipOfType(Type requestedType)
{
var newClip = CreateClipOfType(requestedType);
AddClip(newClip);
return newClip;
}
internal TimelineClip CreateClipOfType(Type requestedType)
{
if (!ValidateClipType(requestedType))
throw new System.InvalidOperationException("Clips of type " + requestedType + " are not permitted on tracks of type " + GetType());
var playableAsset = CreateInstance(requestedType);
if (playableAsset == null)
{
throw new System.InvalidOperationException("Could not create an instance of the ScriptableObject type " + requestedType.Name);
}
playableAsset.name = requestedType.Name;
TimelineCreateUtilities.SaveAssetIntoObject(playableAsset, this);
TimelineUndo.RegisterCreatedObjectUndo(playableAsset, "Create Clip");
return CreateClipFromAsset(playableAsset);
}
/// <summary>
/// Creates a timeline clip from an existing playable asset.
/// </summary>
/// <param name="asset"></param>
/// <returns></returns>
internal TimelineClip CreateClipFromPlayableAsset(IPlayableAsset asset)
{
if (asset == null)
throw new ArgumentNullException("asset");
if ((asset as ScriptableObject) == null)
throw new System.ArgumentException("CreateClipFromPlayableAsset " + " only supports ScriptableObject-derived Types");
if (!ValidateClipType(asset.GetType()))
throw new System.InvalidOperationException("Clips of type " + asset.GetType() + " are not permitted on tracks of type " + GetType());
return CreateClipFromAsset(asset as ScriptableObject);
}
private TimelineClip CreateClipFromAsset(ScriptableObject playableAsset)
{
TimelineUndo.PushUndo(this, "Create Clip");
var newClip = CreateNewClipContainerInternal();
newClip.displayName = playableAsset.name;
newClip.asset = playableAsset;
IPlayableAsset iPlayableAsset = playableAsset as IPlayableAsset;
if (iPlayableAsset != null)
{
var candidateDuration = iPlayableAsset.duration;
if (!double.IsInfinity(candidateDuration) && candidateDuration > 0)
newClip.duration = Math.Min(Math.Max(candidateDuration, TimelineClip.kMinDuration), TimelineClip.kMaxTimeValue);
}
try
{
OnCreateClip(newClip);
}
catch (Exception e)
{
Debug.LogError(e.Message, playableAsset);
return null;
}
return newClip;
}
internal IEnumerable<ScriptableObject> GetMarkersRaw()
{
return m_Markers.GetRawMarkerList();
}
internal void ClearMarkers()
{
m_Markers.Clear();
}
internal void AddMarker(ScriptableObject e)
{
m_Markers.Add(e);
}
internal bool DeleteMarkerRaw(ScriptableObject marker)
{
return m_Markers.Remove(marker, timelineAsset, this);
}
int GetTimeRangeHash()
{
double start = double.MaxValue, end = double.MinValue;
foreach (var marker in GetMarkers())
{
if (!(marker is INotification))
{
continue;
}
if (marker.time < start)
start = marker.time;
if (marker.time > end)
end = marker.time;
}
return start.GetHashCode().CombineHash(end.GetHashCode());
}
internal void AddClip(TimelineClip newClip)
{
if (!m_Clips.Contains(newClip))
{
m_Clips.Add(newClip);
m_ClipsCache = null;
}
}
Playable CreateNotificationsPlayable(PlayableGraph graph, Playable mixerPlayable, GameObject go, Playable timelinePlayable)
{
UpdateDuration();
var notificationPlayable = NotificationUtilities.CreateNotificationsPlayable(graph, GetMarkers(), go);
if (notificationPlayable.IsValid())
{
notificationPlayable.GetBehaviour().timeSource = timelinePlayable;
if (mixerPlayable.IsValid())
{
notificationPlayable.SetInputCount(1);
graph.Connect(mixerPlayable, 0, notificationPlayable, 0);
notificationPlayable.SetInputWeight(mixerPlayable, 1);
}
}
return notificationPlayable;
}
internal Playable CreatePlayableGraph(PlayableGraph graph, GameObject go, IntervalTree<RuntimeElement> tree, Playable timelinePlayable)
{
var mixerPlayable = Playable.Null;
if (CanCompileClipsRecursive())
{
UpdateDuration();
mixerPlayable = OnCreateClipPlayableGraph(graph, go, tree);
}
var notificationsPlayable = CreateNotificationsPlayable(graph, mixerPlayable, go, timelinePlayable);
if (!notificationsPlayable.IsValid() && !mixerPlayable.IsValid())
{
Debug.LogErrorFormat("Track {0} of type {1} has no notifications and returns an invalid mixer Playable", name,
GetType().FullName);
return Playable.Create(graph);
}
var playableGraph = CanCompileNotifications() ? notificationsPlayable : mixerPlayable;
ConfigureTrackAnimation(tree, go, playableGraph);
return playableGraph;
}
internal virtual Playable OnCreateClipPlayableGraph(PlayableGraph graph, GameObject go, IntervalTree<RuntimeElement> tree)
{
if (tree == null)
throw new ArgumentException("IntervalTree argument cannot be null", "tree");
if (go == null)
throw new ArgumentException("GameObject argument cannot be null", "go");
var blend = CreateTrackMixer(graph, go, clips.Length);
for (var c = 0; c < clips.Length; c++)
{
var source = CreatePlayable(graph, go, clips[c]);
if (source.IsValid())
{
source.SetDuration(clips[c].duration);
var clip = new RuntimeClip(clips[c], source, blend);
tree.Add(clip);
graph.Connect(source, 0, blend, c);
blend.SetInputWeight(c, 0.0f);
}
}
return blend;
}
void ConfigureTrackAnimation(IntervalTree<RuntimeElement> tree, GameObject go, Playable blend)
{
if (!hasCurves)
return;
blend.SetAnimatedProperties(m_Curves);
tree.Add(new InfiniteRuntimeClip(blend));
if (OnTrackAnimationPlayableCreate != null)
OnTrackAnimationPlayableCreate.Invoke(this, go, blend);
}
// sorts clips by start time
internal void SortClips()
{
var clipsAsArray = clips; // will alloc
if (!m_CacheSorted)
{
Array.Sort(clips, (clip1, clip2) => clip1.start.CompareTo(clip2.start));
m_CacheSorted = true;
}
}
// clears the clips after a clone
internal void ClearClipsInternal()
{
m_Clips = new List<TimelineClip>();
m_ClipsCache = null;
}
internal void ClearSubTracksInternal()
{
m_Children = new List<ScriptableObject>();
Invalidate();
}
// called by an owned clip when it moves
internal void OnClipMove()
{
m_CacheSorted = false;
}
internal TimelineClip CreateNewClipContainerInternal()
{
var clipContainer = new TimelineClip(this);
clipContainer.asset = null;
// position clip at end of sequence
var newClipStart = 0.0;
for (var a = 0; a < m_Clips.Count - 1; a++)
{
var clipDuration = m_Clips[a].duration;
if (double.IsInfinity(clipDuration))
clipDuration = TimelineClip.kDefaultClipDurationInSeconds;
newClipStart = Math.Max(newClipStart, m_Clips[a].start + clipDuration);
}
clipContainer.mixInCurve = AnimationCurve.EaseInOut(0, 0, 1, 1);
clipContainer.mixOutCurve = AnimationCurve.EaseInOut(0, 1, 1, 0);
clipContainer.start = newClipStart;
clipContainer.duration = TimelineClip.kDefaultClipDurationInSeconds;
clipContainer.displayName = "untitled";
return clipContainer;
}
internal void AddChild(TrackAsset child)
{
if (child == null)
return;
m_Children.Add(child);
child.parent = this;
Invalidate();
}
internal void MoveLastTrackBefore(TrackAsset asset)
{
if (m_Children == null || m_Children.Count < 2 || asset == null)
return;
var lastTrack = m_Children[m_Children.Count - 1];
if (lastTrack == asset)
return;
for (int i = 0; i < m_Children.Count - 1; i++)
{
if (m_Children[i] == asset)
{
for (int j = m_Children.Count - 1; j > i; j--)
m_Children[j] = m_Children[j - 1];
m_Children[i] = lastTrack;
Invalidate();
break;
}
}
}
internal bool RemoveSubTrack(TrackAsset child)
{
if (m_Children.Remove(child))
{
Invalidate();
child.parent = null;
return true;
}
return false;
}
internal void RemoveClip(TimelineClip clip)
{
m_Clips.Remove(clip);
m_ClipsCache = null;
}
// Is this track compilable for the sequence
// calculate the time interval that this track will be evaluated in.
internal virtual void GetEvaluationTime(out double outStart, out double outDuration)
{
outStart = double.PositiveInfinity;
var outEnd = double.NegativeInfinity;
if (hasCurves)
{
outStart = 0.0;
outEnd = TimeUtility.GetAnimationClipLength(curves);
}
foreach (var clip in clips)
{
outStart = Math.Min(clip.start, outStart);
outEnd = Math.Max(clip.end, outEnd);
}
if (HasNotifications())
{
var notificationDuration = GetNotificationDuration();
outStart = Math.Min(notificationDuration, outStart);
outEnd = Math.Max(notificationDuration, outEnd);
}
if (double.IsInfinity(outStart) || double.IsInfinity(outEnd))
outStart = outDuration = 0.0;
else
outDuration = outEnd - outStart;
}
// calculate the time interval that the sequence will use to determine length.
// by default this is the same as the evaluation, but subclasses can have different
// behaviour
internal virtual void GetSequenceTime(out double outStart, out double outDuration)
{
GetEvaluationTime(out outStart, out outDuration);
}
/// <summary>
/// Called by the Timeline Editor to gather properties requiring preview.
/// </summary>
/// <param name="director">The PlayableDirector invoking the preview</param>
/// <param name="driver">PropertyCollector used to gather previewable properties</param>
public virtual void GatherProperties(PlayableDirector director, IPropertyCollector driver)
{
// only push on game objects if there is a binding. Subtracks
// will use objects on the stack
var gameObject = GetGameObjectBinding(director);
if (gameObject != null)
driver.PushActiveGameObject(gameObject);
if (hasCurves)
driver.AddObjectProperties(this, m_Curves);
foreach (var clip in clips)
{
if (clip.curves != null && clip.asset != null)
driver.AddObjectProperties(clip.asset, clip.curves);
IPropertyPreview modifier = clip.asset as IPropertyPreview;
if (modifier != null)
modifier.GatherProperties(director, driver);
}
foreach (var subtrack in GetChildTracks())
{
if (subtrack != null)
subtrack.GatherProperties(director, driver);
}
if (gameObject != null)
driver.PopActiveGameObject();
}
internal GameObject GetGameObjectBinding(PlayableDirector director)
{
if (director == null)
return null;
var binding = director.GetGenericBinding(this);
var gameObject = binding as GameObject;
if (gameObject != null)
return gameObject;
var comp = binding as Component;
if (comp != null)
return comp.gameObject;
return null;
}
internal bool ValidateClipType(Type clipType)
{
var attrs = GetType().GetCustomAttributes(typeof(TrackClipTypeAttribute), true);
for (var c = 0; c < attrs.Length; ++c)
{
var attr = (TrackClipTypeAttribute)attrs[c];
if (attr.inspectedType.IsAssignableFrom(clipType))
return true;
}
// special case for playable tracks, they accept all clips (in the runtime)
return typeof(PlayableTrack).IsAssignableFrom(GetType()) &&
typeof(IPlayableAsset).IsAssignableFrom(clipType) &&
typeof(ScriptableObject).IsAssignableFrom(clipType);
}
/// <summary>
/// Called when a clip is created on a track.
/// </summary>
/// <param name="clip">The timeline clip added to this track</param>
/// <remarks>Use this method to set default values on a timeline clip, or it's PlayableAsset.</remarks>
protected virtual void OnCreateClip(TimelineClip clip) {}
void UpdateDuration()
{
// check if something changed in the clips that require a re-calculation of the evaluation times.
var itemsHash = CalculateItemsHash();
if (itemsHash == m_ItemsHash)
return;
m_ItemsHash = itemsHash;
double trackStart, trackDuration;
GetSequenceTime(out trackStart, out trackDuration);
m_Start = (DiscreteTime)trackStart;
m_End = (DiscreteTime)(trackStart + trackDuration);
// calculate the extrapolations time.
// TODO Extrapolation time should probably be extracted from the SequenceClip so only a track is aware of it.
this.CalculateExtrapolationTimes();
}
protected internal virtual int CalculateItemsHash()
{
return HashUtility.CombineHash(GetClipsHash(), GetAnimationClipHash(m_Curves), GetTimeRangeHash());
}
/// <summary>
/// Constructs a Playable from a TimelineClip.
/// </summary>
/// <param name="graph">PlayableGraph that will own the playable.</param>
/// <param name="gameObject">The GameObject that builds the PlayableGraph.</param>
/// <param name="clip">The TimelineClip to construct a playable for.</param>
/// <returns>A playable that will be set as an input to the Track Mixer playable, or Playable.Null if the clip does not have a valid PlayableAsset</returns>
/// <exception cref="ArgumentException">Thrown if the specified PlayableGraph is not valid.</exception>
/// <exception cref="ArgumentNullException">Thrown if the specified TimelineClip is not valid.</exception>
/// <remarks>
/// By default, this method invokes Playable.CreatePlayable, sets animated properties, and sets the speed of the created playable. Override this method to change this default implementation.
/// </remarks>
protected virtual Playable CreatePlayable(PlayableGraph graph, GameObject gameObject, TimelineClip clip)
{
if (!graph.IsValid())
throw new ArgumentException("graph must be a valid PlayableGraph");
if (clip == null)
throw new ArgumentNullException("clip");
var asset = clip.asset as IPlayableAsset;
if (asset != null)
{
var handle = asset.CreatePlayable(graph, gameObject);
if (handle.IsValid())
{
handle.SetAnimatedProperties(clip.curves);
handle.SetSpeed(clip.timeScale);
if (OnClipPlayableCreate != null)
OnClipPlayableCreate(clip, gameObject, handle);
}
return handle;
}
return Playable.Null;
}
internal void Invalidate()
{
m_ChildTrackCache = null;
var timeline = timelineAsset;
if (timeline != null)
{
timeline.Invalidate();
}
}
internal double GetNotificationDuration()
{
if (!supportsNotifications)
{
return 0;
}
var maxTime = 0.0;
foreach (var marker in GetMarkers())
{
if (!(marker is INotification))
{
continue;
}
maxTime = Math.Max(maxTime, marker.time);
}
return maxTime;
}
internal virtual bool CanCompileClips()
{
return hasClips || hasCurves;
}
internal bool IsCompilable()
{
var isContainer = typeof(GroupTrack).IsAssignableFrom(GetType());
if (isContainer)
return false;
var ret = !mutedInHierarchy && (CanCompileClips() || CanCompileNotifications());
if (!ret)
{
foreach (var t in GetChildTracks())
{
if (t.IsCompilable())
return true;
}
}
return ret;
}
private void UpdateChildTrackCache()
{
if (m_ChildTrackCache == null)
{
if (m_Children == null || m_Children.Count == 0)
m_ChildTrackCache = s_EmptyCache;
else
{
var childTracks = new List<TrackAsset>(m_Children.Count);
for (int i = 0; i < m_Children.Count; i++)
{
var subTrack = m_Children[i] as TrackAsset;
if (subTrack != null)
childTracks.Add(subTrack);
}
m_ChildTrackCache = childTracks;
}
}
}
internal virtual int Hash()
{
return clips.Length + (m_Markers.Count << 16);
}
int GetClipsHash()
{
var hash = 0;
foreach (var clip in m_Clips)
{
hash = hash.CombineHash(clip.Hash());
}
return hash;
}
protected static int GetAnimationClipHash(AnimationClip clip)
{
var hash = 0;
if (clip != null && !clip.empty)
hash = hash.CombineHash(clip.frameRate.GetHashCode())
.CombineHash(clip.length.GetHashCode());
return hash;
}
bool HasNotifications()
{
return m_Markers.HasNotifications();
}
bool CanCompileNotifications()
{
return supportsNotifications && m_Markers.HasNotifications();
}
bool CanCompileClipsRecursive()
{
if (CanCompileClips())
return true;
foreach (var track in GetChildTracks())
{
if (track.CanCompileClipsRecursive())
return true;
}
return false;
}
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