/// <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));
}
/// <summary>
/// Gets a <see cref="KeyFrameModelCollection"/> containing the data models of key frame view models in a <see cref="KeyFrameViewModelCollection"/>,
/// optionally creating deep copies of the data models and offsetting the key frame numbers.
/// </summary>
/// <param name="keyFrameViewModels">The source <see cref="KeyFrameViewModelCollection"/>.</param>
/// <param name="createCopies">Whether to create deep copies of the data models. Defaults to false.</param>
/// <param name="frameOffset">The number of frames to offset the frame numbers of the data models by. Defaults to zero.</param>
/// <returns>
/// A <see cref="KeyFrameModelCollection"/> containing the data models of key frame view models in the <see cref="KeyFrameViewModelCollection"/>
/// which have been deep copied and/or frame offset if so specified.
/// </returns>
protected KeyFrameModelCollection GetKeyFrameModels(KeyFrameViewModelCollection keyFrameViewModels, bool createCopies = false, int frameOffset = 0)
{
KeyFrameModelCollection keyFrameModels = new KeyFrameModelCollection();
for (int i = 0; i < keyFrameViewModels.Count; i++)
{
KeyFrameModelBase keyFrameModel = createCopies ? keyFrameViewModels[i].Model.DeepCopy() : keyFrameViewModels[i].Model;
if (frameOffset != 0)
{
keyFrameModel.FrameNumber += frameOffset;
}
keyFrameModels.Add(keyFrameModel);
}
return(keyFrameModels);
}
/// <inheritdoc/>
public override SegmentViewModelBase CreateSegmentModelViewModel(SegmentViewModelBase sourceViewModel, int?trackNumber = null, int?startFrame = null, int?endFrame = null, string name = null, KeyFrameViewModelCollection keyFrameViewModels = null)
{
int newTrackNumber = trackNumber.GetValueOrDefault(sourceViewModel.TrackNumber);
int newStartFrame = startFrame.GetValueOrDefault(sourceViewModel.StartFrame);
int newEndFrame = endFrame.GetValueOrDefault(sourceViewModel.EndFrame);
string newName = name ?? sourceViewModel.Name;
KeyFrameModelCollection keyFrameModels = keyFrameViewModels != null
? GetKeyFrameModels(keyFrameViewModels)
: GetKeyFrameModels(sourceViewModel.KeyFrameViewModels, true, newStartFrame - sourceViewModel.StartFrame);
return(new MockSegmentViewModel(
new MockSegmentModel(newStartFrame, newEndFrame, newTrackNumber, keyFrameModels, newName),
_scriptVideoContext, _rootUndoObject, _undoService, _undoChangeFactory, _clipboardService, keyFrameViewModels
));
}
/// <inheritdoc/> public abstract SegmentViewModelBase CreateSegmentModelViewModel(SegmentViewModelBase sourceViewModel, int?trackNumber = null, int?startFrame = null, int?endFrame = null, string name = null, KeyFrameViewModelCollection keyFrameViewModels = null);
/// <summary>
/// Base constructor for masking shape segment view models derived from the <see cref="MaskShapeViewModelBase"/> class.
/// </summary>
/// <inheritdoc cref="SegmentViewModelBase(SegmentModelBase, IScriptVideoContext, object, IUndoService, IChangeFactory, IClipboardService, KeyFrameViewModelCollection)"/>
protected MaskShapeViewModelBase(SegmentModelBase model, IScriptVideoContext scriptVideoContext, object rootUndoObject, IUndoService undoService, IChangeFactory undoChangeFactory, IClipboardService clipboardService, KeyFrameViewModelCollection keyFrameViewModels = null) : base(model, scriptVideoContext, rootUndoObject, undoService, undoChangeFactory, clipboardService, keyFrameViewModels)
{
}
