A game about forced loneliness, made by TACStudios
tacstudios.tngl.sh
1using System;
2using UnityEngine;
3using UnityEngine.Timeline;
4using UnityEngine.Playables;
5
6namespace UnityEngine.Timeline
7{
8 /// <summary>
9 /// Extension methods for TrackAssets
10 /// </summary>
11 public static class TrackAssetExtensions
12 {
13 /// <summary>
14 /// Gets the GroupTrack this track belongs to.
15 /// </summary>
16 /// <param name="asset">The track asset to find the group of</param>
17 /// <returns>The parent GroupTrack or null if the Track is an override track, or root track.</returns>
18 public static GroupTrack GetGroup(this TrackAsset asset)
19 {
20 if (asset == null)
21 return null;
22
23 return asset.parent as GroupTrack;
24 }
25
26 /// <summary>
27 /// Assigns the track to the specified group track.
28 /// </summary>
29 /// <param name="asset">The track to assign.</param>
30 /// <param name="group">The GroupTrack to assign the track to.</param>
31 /// <remarks>
32 /// Does not support assigning to a group in a different timeline.
33 /// </remarks>
34 public static void SetGroup(this TrackAsset asset, GroupTrack group)
35 {
36 const string undoString = "Reparent";
37
38 if (asset == null || asset == group || asset.parent == group)
39 return;
40
41 if (group != null && asset.timelineAsset != group.timelineAsset)
42 throw new InvalidOperationException("Cannot assign to a group in a different timeline");
43
44
45 TimelineUndo.PushUndo(asset, undoString);
46
47 var timeline = asset.timelineAsset;
48 var parentTrack = asset.parent as TrackAsset;
49 var parentTimeline = asset.parent as TimelineAsset;
50 if (parentTrack != null || parentTimeline != null)
51 {
52 TimelineUndo.PushUndo(asset.parent, undoString);
53 if (parentTimeline != null)
54 {
55 parentTimeline.RemoveTrack(asset);
56 }
57 else
58 {
59 parentTrack.RemoveSubTrack(asset);
60 }
61 }
62
63 if (group == null)
64 {
65 TimelineUndo.PushUndo(timeline, undoString);
66 asset.parent = asset.timelineAsset;
67 timeline.AddTrackInternal(asset);
68 }
69 else
70 {
71 TimelineUndo.PushUndo(group, undoString);
72 group.AddChild(asset);
73 }
74 }
75 }
76}