//----------------------------------------------------------------------------------------------------------------------
/// <inheritdoc/>
public override void DrawBackground(TimelineClip clip, ClipBackgroundRegion region)
{
base.DrawBackground(clip, region);
Rect rect = region.position;
if (rect.width <= SISEditorConstants.MIN_PREVIEW_REGION_WIDTH)
{
return;
}
StreamingImageSequencePlayableAsset curAsset = clip.asset as StreamingImageSequencePlayableAsset;
if (null == curAsset || !curAsset.HasImages())
{
return;
}
if (Event.current.type == EventType.Repaint)
{
PreviewClipInfo clipInfo = new PreviewClipInfo()
{
Duration = clip.duration,
TimeScale = clip.timeScale,
ClipIn = clip.clipIn,
FramePerSecond = clip.parentTrack.timelineAsset.editorSettings.fps,
ImageDimensionRatio = curAsset.GetOrUpdateDimensionRatio(),
VisibleLocalStartTime = region.startTime,
VisibleLocalEndTime = region.endTime,
VisibleRect = rect,
};
PreviewUtility.EnumeratePreviewImages(ref clipInfo, (PreviewDrawInfo drawInfo) => {
DrawPreviewImage(ref drawInfo, clip, curAsset);
});
//For hiding frame marker automatically
int numFrames = Mathf.RoundToInt((float)((region.endTime - region.startTime) * clipInfo.FramePerSecond));
double widthPerFrame = rect.width / numFrames;
TimelineClipSISData timelineClipSISData = curAsset.GetBoundTimelineClipSISData();
if (null != timelineClipSISData)
{
timelineClipSISData.SetTimelineWidthPerFrame(widthPerFrame);
}
}
}