// Find the gap at the given time
// return true if there is a gap, false if there is an intersection
// endGap will be Infinity if the gap has no end
internal static bool GetGapAtTime(this TrackAsset track, double time, out double startGap, out double endGap)
{
startGap = 0;
endGap = Double.PositiveInfinity;
if (track == null || !track.GetClips().Any())
{
return(false);
}
var discreteTime = new DiscreteTime(time);
track.SortClips();
var sortedByStartTime = track.clips;
for (int i = 0; i < sortedByStartTime.Length; i++)
{
var clip = sortedByStartTime[i];
// intersection
if (discreteTime >= new DiscreteTime(clip.start) && discreteTime < new DiscreteTime(clip.end))
{
endGap = time;
startGap = time;
return(false);
}
if (clip.end < time)
{
startGap = clip.end;
}
if (clip.start > time)
{
endGap = clip.start;
break;
}
}
if (endGap - startGap < TimelineClip.kMinDuration)
{
startGap = time;
endGap = time;
return(false);
}
return(true);
}
public static void DrawAnimationRecordBorder(ClipDrawData drawData)
{
if (!drawData.clip.GetParentTrack().IsRecordingToClip(drawData.clip))
{
return;
}
var time = new DiscreteTime(TimelineWindow.instance.state.editSequence.time);
var start = new DiscreteTime(drawData.clip.start + drawData.clip.mixInDuration);
var end = new DiscreteTime(drawData.clip.end - drawData.clip.mixOutDuration);
if (time < start || time >= end)
{
return;
}
DrawClipSelectionBorder(drawData.clipCenterSection, ClipBorder.Recording(), ClipBlends.kNone);
}
// Finds the clip at the given time that recording should use
// returns whether recording at this particular point is valid
// The target clip will be returned, even if recording at that time is invalid
// in case of recording in a blend OR recording to a non-timeline clip
internal static bool FindRecordingClipAtTime(this TrackAsset track, double time, out TimelineClip target)
{
target = null;
if (track == null)
{
return(false);
}
var discreteTime = new DiscreteTime(time);
// only animation tracks require the recordable flag as they are recording
// to an animation clip
bool requiresRecordable = (track as AnimationTrack) != null;
if (requiresRecordable)
{
track.SortClips();
var sortedByStartTime = track.clips;
int i = 0;
for (i = 0; i < sortedByStartTime.Length; i++)
{
var clip = sortedByStartTime[i];
if (new DiscreteTime(clip.start) <= discreteTime && new DiscreteTime(clip.end) > discreteTime)
{
target = clip;
// not recordable
if (!clip.recordable)
{
return(false);
}
// in a blend
if (!Mathf.Approximately(1.0f, clip.EvaluateMixIn(time) * clip.EvaluateMixOut(time)))
{
return(false);
}
return(true);
}
if (new DiscreteTime(clip.start) > discreteTime)
{
break;
}
}
return(false);
}
// Recordable playable assets -- takes the last clip that matches
track.SortClips();
for (int i = 0; i < track.clips.Length; i++)
{
var clip = track.clips[i];
if (clip.start <= time && clip.end >= time && clip.HasAnyAnimatableParameters())
{
target = clip;
}
if (clip.start > time)
{
break;
}
}
return(target != null);
}