private void TrimEndTime_KeyDown(object sender, Windows.UI.Xaml.Input.KeyRoutedEventArgs e)
{
if (e.Key == Windows.System.VirtualKey.Enter)
{
CutRange.Focus(FocusState.Programmatic);
}
}
private void CutRange_ValueChanged(object sender, Microsoft.Toolkit.Uwp.UI.Controls.RangeChangedEventArgs e)
{
TrimStartTime.LostFocus -= TrimStartTime_LostFocus;
TrimEndTime.LostFocus -= TrimEndTime_LostFocus;
CutRange.Focus(FocusState.Programmatic);
TrimStartTime.LostFocus += TrimStartTime_LostFocus;
TrimEndTime.LostFocus += TrimEndTime_LostFocus;
if (e.ChangedRangeProperty == Microsoft.Toolkit.Uwp.UI.Controls.RangeSelectorProperty.MaximumValue)
{
UpdatePreviewVideoOnDisplay(true, CutRange.RangeMax, null);
}
else
{
UpdatePreviewVideoOnDisplay(false, null, CutRange.RangeMin);
}
}
/// <summary>
/// This method doesn't say the specific cut, but it constraints
/// the time for searching interesting events. It is mostly
/// dependent on current emotion.
/// </summary>
public CutRange EvaluateCutRangeForEvent(EmotionEvent e)
{
CutRange range = new CutRange();
EmotionSpectrum emotionAtEventTime = emotionEngine.GetSpectrum(e.timestamp);
CoreEmotion coreEmotion = EmotionEngine.FindMainEmotion(emotionAtEventTime);
// In seconds
switch (coreEmotion)
{
case CoreEmotion.Joy:
range.minCutTime = ProceduralEngine.RandomRange(1f, 2f);
range.maxCutTime = ProceduralEngine.RandomRange(7f, 8f);
break;
case CoreEmotion.Trust:
range.minCutTime = ProceduralEngine.RandomRange(2f, 5f);
range.maxCutTime = ProceduralEngine.RandomRange(7f, 10f);
break;
case CoreEmotion.Fear:
range.minCutTime = ProceduralEngine.RandomRange(1f, 2f);
range.maxCutTime = ProceduralEngine.RandomRange(4f, 6f);
break;
case CoreEmotion.Surprise:
range.minCutTime = ProceduralEngine.RandomRange(1.5f, 2f);
range.maxCutTime = ProceduralEngine.RandomRange(2f, 4f);
break;
case CoreEmotion.Sadness:
range.minCutTime = ProceduralEngine.RandomRange(1f, 1.5f);
range.maxCutTime = ProceduralEngine.RandomRange(2f, 4f);
break;
case CoreEmotion.Disgust:
range.minCutTime = ProceduralEngine.RandomRange(1f, 2f);
range.maxCutTime = ProceduralEngine.RandomRange(3f, 4f);
break;
case CoreEmotion.Anger:
range.minCutTime = ProceduralEngine.RandomRange(.3f, 1f);
range.maxCutTime = ProceduralEngine.RandomRange(1f, 3f);
break;
case CoreEmotion.Anticipation:
range.minCutTime = ProceduralEngine.RandomRange(2f, 4f);
range.maxCutTime = ProceduralEngine.RandomRange(4f, 5f);
break;
}
switch (e.type)
{
case EmotionEvent.EmotionEventType.Start:
// Longer cuts when showing for first time
range.minCutTime *= e.chunkDelimitsSegment ? 1f : .75f;
range.maxCutTime *= e.chunkDelimitsSegment ? 1f : .75f;
break;
case EmotionEvent.EmotionEventType.End:
// Longer cuts when something disappears for good
range.minCutTime *= e.chunkDelimitsSegment ? 1.5f : 1f;
range.maxCutTime *= e.chunkDelimitsSegment ? 1.5f : 1f;
break;
case EmotionEvent.EmotionEventType.LocalMaximum:
range.minCutTime *= 1f;
range.maxCutTime *= 1f;
break;
case EmotionEvent.EmotionEventType.LocalMinimum:
range.minCutTime *= 2f;
range.maxCutTime *= 2f;
break;
}
TrackChunkData structureData = emotionEngine.GetCurrentStructureData(e.timestamp);
if (structureData != null)
{
// More intense -> shorter
float normalizedStructuralIntensity = Mathf.Pow(structureData.GetIntensity(e.timestamp), 2f);
range.minCutTime *= 1.35f - normalizedStructuralIntensity * .5f;
range.maxCutTime *= 1.35f - normalizedStructuralIntensity * .5f;
// TODO: decide if we need further modifications of cut time based on type.
// Intensity curve should cover most I think
StructureType currentStructure = emotionEngine.GetStructureAtTime(e.timestamp);
switch (currentStructure)
{
case StructureType.None:
break;
case StructureType.Sustain:
break;
case StructureType.Increasing:
break;
case StructureType.Decreasing:
break;
}
}
range.minCutTime = Mathf.Max(0.01f, range.minCutTime);
range.maxCutTime = Mathf.Max(0.02f, range.maxCutTime);
float tmp = range.minCutTime;
range.minCutTime = Mathf.Min(range.minCutTime, range.maxCutTime);
range.maxCutTime = Mathf.Max(tmp, range.maxCutTime);
// Normalize times
range.minCutTime /= ProceduralEngine.Instance.Duration;
range.maxCutTime /= ProceduralEngine.Instance.Duration;
return(range);
}
/// <summary>
/// This method has two main responsibilities:
/// - Decide when to cut
/// - Decide what shot to take
/// It is tied to a specific event, so that the chaining of shots is possible
/// </summary>
protected ShotInformation TryFindCut(EmotionEvent startEvent)
{
ShotInformation shot = new ShotInformation();
shot.valid = false;
shot.selectedCamera = null;
shot.type = TransitionType.Cut; // TODO: for now...
shot.strategy = null;
shot.interestPoint = null;
shot.sampledStrategies = new List <KeyValuePair <ProceduralCameraStrategy, float> >();
shot.startEvent = startEvent;
// Make sure we don't lag
float timestamp = Mathf.Max(startEvent.timestamp, ProceduralEngine.Instance.CurrentTimeNormalized);
CutRange searchRange = EvaluateCutRangeForEvent(startEvent);
float minT = timestamp + searchRange.minCutTime;
float maxT = timestamp + searchRange.maxCutTime * (1f + nextShotTries * .1f); // Increase search range when it fails
List <EmotionEventGroup> searchEvents = ProceduralEngine.Instance.EventDispatcher.GetFutureEventGroups(minT, maxT);
if (searchEvents.Count == 0)
{
Debug.Log("Could not find event groups... " + minT + ", " + maxT);
return(shot);
}
EmotionEventGroup selectedGroup = null;
bool structural = false;
foreach (EmotionEventGroup g in searchEvents)
{
if (g.ContainsStructuralEvent())
{
selectedGroup = g;
structural = true;
}
}
if (selectedGroup == null)
{
selectedGroup = ProceduralEngine.SelectRandomWeighted(searchEvents, x => x.GetPriority());
}
// We found a subset of interesting events, now we can pick something in here
if (selectedGroup != null && selectedGroup.events.Count > 0)
{
EmotionEvent selectedEvent;
if (structural)
{
selectedEvent = selectedGroup.GetStructuralEvent();
}
else
{
selectedEvent = ProceduralEngine.SelectRandomWeighted(selectedGroup.events, x => GetEventPriority(x));
}
shot.duration = (selectedEvent.timestamp - timestamp);
shot.selectedNextEventTrigger = selectedEvent;
// Try cutting before, but not after
float margin = emotionEngine.BeatDurationNormalized * .5f;
float fuzzyDuration = shot.duration - ProceduralEngine.RandomRange(0f, margin);
if (fuzzyDuration > searchRange.minCutTime && fuzzyDuration < searchRange.maxCutTime)
{
shot.duration = fuzzyDuration;
}
shot.valid = true;
}
return(shot);
}
