public static string ExportTimeline(TimelineAsset timeline, bool prettyPrint = false)
{
List <TrackAsset> tracks = new List <TrackAsset>(timeline.GetOutputTracks());
SequenceCollection sequenceCollection = new SequenceCollection();
foreach (TrackAsset track in tracks)
{
if (track is CrazyflieTrack)
{
CrazyflieTrack crazyflieTrack = track as CrazyflieTrack;
SequenceTrack sequenceTrack = new SequenceTrack();
IEnumerable <IMarker> markers = crazyflieTrack.GetMarkers();
Tuple <List <ColorKeyframe>, List <Waypoint> > processedKeyframes = ProcessKeyframes(sequenceTrack, markers);
List <ColorKeyframe> sortedColorKeyframes = processedKeyframes.Item1;
List <Waypoint> sortedWaypoints = processedKeyframes.Item2;
sequenceTrack.LedTimings = ColorExporter.Process(sortedColorKeyframes);
sequenceTrack.CompressedTrajectory = TrajectoryExporter.Process(sortedWaypoints);
sequenceTrack.StartPosition = GetStart(sortedWaypoints);
sequenceTrack.StartColor = GetStart(sortedColorKeyframes);
sequenceTrack.Name = crazyflieTrack.name;
sequenceCollection.Tracks.Add(sequenceTrack);
}
}
sequenceCollection.Length = (float)timeline.duration;
sequenceCollection.DroneCount = sequenceCollection.Tracks.Count;
string jsonText = JsonUtility.ToJson(sequenceCollection, prettyPrint);
return(jsonText);
}
private static Tuple <List <ColorKeyframe>, List <Waypoint> > ProcessKeyframes(SequenceTrack track, IEnumerable <IMarker> markers)
{
List <ColorKeyframe> colorKeyframes = new List <ColorKeyframe>();
List <Waypoint> waypoints = new List <Waypoint>();
List <IMarker> sortedMarkers = new List <IMarker>(markers);
sortedMarkers.Sort(KeyframeUtil.KeyframeComparator);
foreach (IMarker marker in sortedMarkers)
{
if (marker is ColorKeyframe)
{
colorKeyframes.Add(marker as ColorKeyframe);
track.Length = Mathf.Max(track.Length, (float)marker.time);
}
if (marker is Waypoint)
{
waypoints.Add(marker as Waypoint);
track.Length = Mathf.Max(track.Length, (float)marker.time);
}
}
colorKeyframes.Sort(KeyframeUtil.KeyframeComparator);
waypoints.Sort(KeyframeUtil.KeyframeComparator);
if (waypoints.Count > 0 && waypoints[0].time > 0.0f)
{
Waypoint fakeWaypoint = ScriptableObject.CreateInstance <Waypoint>();
fakeWaypoint.Position = waypoints[0].Position;
fakeWaypoint.JointType = JointType.Linear;
fakeWaypoint.time = 0.0;
waypoints.Insert(0, fakeWaypoint);
}
if (colorKeyframes.Count > 0 && colorKeyframes[0].time > 0.0f)
{
ColorKeyframe fakeKeyframe = ScriptableObject.CreateInstance <ColorKeyframe>();
fakeKeyframe.LightColor = colorKeyframes[0].LightColor;
fakeKeyframe.time = 0.0;
colorKeyframes.Insert(0, fakeKeyframe);
}
int lastIndex = colorKeyframes.Count - 1;
if (colorKeyframes.Count > 0 && colorKeyframes[lastIndex].time < track.Length)
{
ColorKeyframe lastKeyframe = ScriptableObject.CreateInstance <ColorKeyframe>();
lastKeyframe.LightColor = colorKeyframes[lastIndex].LightColor;
lastKeyframe.time = track.Length;
colorKeyframes.Add(lastKeyframe);
}
return(new Tuple <List <ColorKeyframe>, List <Waypoint> >(colorKeyframes, waypoints));
}
