public TimelineBase GetTimelineAtFrame(int frameNumber)
{
if (timelines != null)
{
TimelineBase timeline = timelines[lastestTimelineIndex];
if (frameNumber > lastestFrame)
{
while (frameNumber >= timeline.EndFrame &&
lastestTimelineIndex < timelines.Count - 1)
{
lastestTimelineIndex++;
timeline = timelines[lastestTimelineIndex];
}
lastestFrame = frameNumber;
return(timeline);
}
else
{
while (frameNumber < timeline.StartFrame &&
lastestTimelineIndex > 0)
{
lastestTimelineIndex--;
timeline = timelines[lastestTimelineIndex];
}
lastestFrame = frameNumber;
return(timeline);
}
}
return(null);
}
protected void InnerAdd(TimelineBase timeline)
{
if (timelines == null)
{
timelines = new List <TimelineBase>();
}
timelines.Add(timeline);
}
protected void InnerAppendLast(TimelineBase timeline)
{
if (timelines == null)
{
timelines = new List <TimelineBase>();
}
if (timelines.Count > 0)
{
timeline.StartFrame = timelines[timelines.Count - 1].EndFrame + 1;
timelines.Add(timeline);
}
else
{
timeline.StartFrame = 0;
timelines.Add(timeline);
}
}