/// <inheritdoc/>
public virtual SegmentViewModelBase CreateSplitSegmentModelViewModel(SegmentViewModelBase segmentViewModelToSplit, int frameNumberToSplitAt)
{
KeyFrameViewModelCollection splitKeyFrameViewModels = new KeyFrameViewModelCollection();
if (segmentViewModelToSplit.ActiveKeyFrame?.FrameNumber >= frameNumberToSplitAt)
{
segmentViewModelToSplit.ActiveKeyFrame = null;
}
int keyFrameIndex = segmentViewModelToSplit.KeyFrameViewModels.LowerBoundIndex(frameNumberToSplitAt);
if (keyFrameIndex < segmentViewModelToSplit.KeyFrameViewModels.Count)
{
KeyFrameViewModelBase keyFrameViewModel = segmentViewModelToSplit.KeyFrameViewModels[keyFrameIndex];
if (keyFrameViewModel.FrameNumber > frameNumberToSplitAt)
{
// Lerp new KeyFrameViewModel and add to splitKeyFrameViewModels
Debug.Assert(keyFrameIndex > 0);
keyFrameViewModel = segmentViewModelToSplit.KeyFrameViewModels[keyFrameIndex - 1].Lerp(frameNumberToSplitAt, keyFrameViewModel);
splitKeyFrameViewModels.Add(keyFrameViewModel);
}
// Loop from keyFrameIndex and move (via remove & add) KeyFrameViewModel(s) to splitKeyFrameViewModels
do
{
keyFrameViewModel = segmentViewModelToSplit.KeyFrameViewModels[keyFrameIndex];
segmentViewModelToSplit.KeyFrameViewModels.RemoveAt(keyFrameIndex);
segmentViewModelToSplit.Model.KeyFrames.RemoveAt(keyFrameIndex);
splitKeyFrameViewModels.Add(keyFrameViewModel);
} while (keyFrameIndex < segmentViewModelToSplit.KeyFrameViewModels.Count);
}
else
{
// Lerp new KeyFrameViewModel and add to splitKeyFrameViewModels
KeyFrameModelBase keyFrameModel = segmentViewModelToSplit.Model.KeyFrames.Last(kfm => kfm.FrameNumber < frameNumberToSplitAt).DeepCopy();
keyFrameModel.FrameNumber = frameNumberToSplitAt;
splitKeyFrameViewModels.Add(segmentViewModelToSplit.CreateKeyFrameViewModel(keyFrameModel));
}
int splitViewModelEndFrame = segmentViewModelToSplit.EndFrame;
segmentViewModelToSplit.EndFrame = frameNumberToSplitAt - 1;
return(CreateSegmentModelViewModel(segmentViewModelToSplit, segmentViewModelToSplit.TrackNumber,
frameNumberToSplitAt, splitViewModelEndFrame, segmentViewModelToSplit.Name,
splitKeyFrameViewModels));
}
/// <inheritdoc/> public abstract SegmentViewModelBase CreateSegmentModelViewModel(SegmentViewModelBase sourceViewModel, int?trackNumber = null, int?startFrame = null, int?endFrame = null, string name = null, KeyFrameViewModelCollection keyFrameViewModels = null);