void FNameCurveKeyArea::PasteKeys(const FMovieSceneClipboardKeyTrack& KeyTrack, const FMovieSceneClipboardEnvironment& SrcEnvironment, const FSequencerPasteEnvironment& DstEnvironment)
{
float PasteAt = DstEnvironment.CardinalTime;
KeyTrack.IterateKeys([&](const FMovieSceneClipboardKey& Key){
UMovieSceneSection* Section = GetOwningSection();
if (!Section)
{
return true;
}
if (Section->TryModify())
{
float Time = PasteAt + Key.GetTime();
if (Section->GetStartTime() > Time)
{
Section->SetStartTime(Time);
}
if (Section->GetEndTime() < Time)
{
Section->SetEndTime(Time);
}
FKeyHandle KeyHandle = Curve.UpdateOrAddKey(Time, Key.GetValue<FName>());
DstEnvironment.ReportPastedKey(KeyHandle, *this);
}
return true;
});
}
UMovieSceneSection* MovieSceneHelpers::FindNearestSectionAtTime( const TArray<UMovieSceneSection*>& Sections, float Time )
{
// Only update the section if the position is within the time span of the section
// Or if there are no sections at the time, the left closest section to the time
// Or in the case that Time is before all sections, take the section with the earliest start time
UMovieSceneSection* ClosestSection = nullptr;
float ClosestSectionTime = 0.f;
UMovieSceneSection* EarliestSection = nullptr;
float EarliestSectionTime = 0.f;
for( int32 SectionIndex = 0; SectionIndex < Sections.Num(); ++SectionIndex )
{
UMovieSceneSection* Section = Sections[SectionIndex];
if (Section->IsActive())
{
//@todo Sequencer - There can be multiple sections overlapping in time. Returning instantly does not account for that.
if( Section->IsTimeWithinSection( Time ) )
{
return Section;
}
float EndTime = Section->GetEndTime();
if (EndTime < Time)
{
float ClosestTime = Time - EndTime;
if (!ClosestSection || ClosestTime < ClosestSectionTime)
{
ClosestSection = Section;
ClosestSectionTime = ClosestTime;
}
}
float StartTime = Section->GetStartTime();
if (!EarliestSection || StartTime < EarliestSectionTime)
{
EarliestSection = Section;
EarliestSectionTime = StartTime;
}
}
}
// if we get here, we are off of any section
// if ClosestSection, then we take the closest to left of this time
// else, we take the EarliestSection
// if that's nullptr, then there are no sections
return ClosestSection ? ClosestSection : EarliestSection;
}
TArray<UMovieSceneSection*> MovieSceneHelpers::GetTraversedSections( const TArray<UMovieSceneSection*>& Sections, float CurrentTime, float PreviousTime )
{
TArray<UMovieSceneSection*> TraversedSections;
bool bPlayingBackwards = CurrentTime - PreviousTime < 0.0f;
float MaxTime = bPlayingBackwards ? PreviousTime : CurrentTime;
float MinTime = bPlayingBackwards ? CurrentTime : PreviousTime;
TRange<float> SliderRange(MinTime, MaxTime);
for( int32 SectionIndex = 0; SectionIndex < Sections.Num(); ++SectionIndex )
{
UMovieSceneSection* Section = Sections[SectionIndex];
if( Section->GetStartTime() == CurrentTime || SliderRange.Overlaps( TRange<float>( Section->GetRange() ) ) )
{
TraversedSections.Add( Section );
}
}
return TraversedSections;
}
FSequencerSelectedKey FVirtualTrackArea::HitTestKey(FVector2D InPhysicalPosition) const
{
TSharedPtr<FSequencerDisplayNode> Node = HitTestNode(InPhysicalPosition.Y);
if (!Node.IsValid())
{
return FSequencerSelectedKey();
}
const float KeyLeft = PixelToTime(InPhysicalPosition.X - SequencerSectionConstants::KeySize.X/2);
const float KeyRight = PixelToTime(InPhysicalPosition.X + SequencerSectionConstants::KeySize.X/2);
TArray<TSharedRef<IKeyArea>> KeyAreas;
// First check for a key area node on the hit-tested node
TSharedPtr<FSequencerSectionKeyAreaNode> KeyAreaNode;
switch (Node->GetType())
{
case ESequencerNode::KeyArea: KeyAreaNode = StaticCastSharedPtr<FSequencerSectionKeyAreaNode>(Node); break;
case ESequencerNode::Track: KeyAreaNode = StaticCastSharedPtr<FSequencerTrackNode>(Node)->GetTopLevelKeyNode(); break;
}
if (KeyAreaNode.IsValid())
{
for (auto& KeyArea : KeyAreaNode->GetAllKeyAreas())
{
UMovieSceneSection* Section = KeyArea->GetOwningSection();
if (Section->GetStartTime() <= KeyRight && Section->GetEndTime() >= KeyLeft)
{
KeyAreas.Add(KeyArea);
}
}
}
// Failing that, and the node is collapsed, we check for key groupings
else if (!Node->IsExpanded())
{
TSharedPtr<FSequencerTrackNode> TrackNode = GetParentTrackNode(*Node);
const TArray< TSharedRef<ISequencerSection> >& Sections = TrackNode->GetSections();
for ( int32 SectionIndex = 0; SectionIndex < Sections.Num(); ++SectionIndex )
{
UMovieSceneSection* Section = Sections[SectionIndex]->GetSectionObject();
if (Section->GetStartTime() <= KeyRight && Section->GetEndTime() >= KeyLeft)
{
KeyAreas.Add(Node->GetKeyGrouping(SectionIndex));
}
}
}
// Search for any key that matches the position
// todo: investigate if this would be faster as a sort + binary search, rather than linear search
for (auto& KeyArea : KeyAreas)
{
for (FKeyHandle Key : KeyArea->GetUnsortedKeyHandles())
{
const float Time = KeyArea->GetKeyTime(Key);
if (Time >= KeyLeft && Time <= KeyRight)
{
return FSequencerSelectedKey(*KeyArea->GetOwningSection(), KeyArea, Key);
}
}
}
return FSequencerSelectedKey();
}
void UMovieSceneShotTrack::FixupSurroundingShots( UMovieSceneSection& Section, bool bDelete )
{
// Find the previous section and extend it to take the place of the section being deleted
int32 SectionIndex = INDEX_NONE;
if( SubMovieSceneSections.Find( &Section, SectionIndex ) )
{
int32 PrevSectionIndex = SectionIndex - 1;
if( SubMovieSceneSections.IsValidIndex( PrevSectionIndex ) )
{
// Extend the previous section
SubMovieSceneSections[PrevSectionIndex]->SetEndTime( bDelete ? Section.GetEndTime() : Section.GetStartTime() );
}
if( !bDelete )
{
int32 NextSectionIndex = SectionIndex + 1;
if(SubMovieSceneSections.IsValidIndex(NextSectionIndex))
{
// Shift the next shot's start time so that it starts when the new shot ends
SubMovieSceneSections[NextSectionIndex]->SetStartTime(Section.GetEndTime());
}
}
}
SortShots();
}
void FMoveKeys::OnDrag( const FPointerEvent& MouseEvent, const FVector2D& LocalMousePos, const FTimeToPixel& TimeToPixelConverter, TSharedPtr<FTrackNode> SequencerNode )
{
// Convert the delta position to a delta time amount that was moved
float MouseTime = TimeToPixelConverter.PixelToTime(LocalMousePos.X);
float SelectedKeyTime = DraggedKey.KeyArea->GetKeyTime(DraggedKey.KeyHandle.GetValue());
float DistanceMoved = MouseTime - SelectedKeyTime;
if( DistanceMoved != 0.0f )
{
float TimeDelta = DistanceMoved;
// Snapping
if ( Settings->GetIsSnapEnabled() )
{
bool bSnappedToKeyTime = false;
if ( Settings->GetSnapKeyTimesToKeys() )
{
TArray<float> OutSnapTimes;
GetKeySnapTimes(OutSnapTimes, SequencerNode);
TArray<float> InitialTimes;
for ( FSelectedKey SelectedKey : SelectedKeys )
{
InitialTimes.Add(SelectedKey.KeyArea->GetKeyTime(SelectedKey.KeyHandle.GetValue()) + DistanceMoved);
}
float OutInitialTime = 0.f;
float OutSnapTime = 0.f;
if ( SnapToTimes( InitialTimes, OutSnapTimes, TimeToPixelConverter, OutInitialTime, OutSnapTime ) )
{
bSnappedToKeyTime = true;
TimeDelta = OutSnapTime - (OutInitialTime - DistanceMoved);
}
}
if ( bSnappedToKeyTime == false && Settings->GetSnapKeyTimesToInterval() )
{
TimeDelta = Settings->SnapTimeToInterval( MouseTime ) - SelectedKeyTime;
}
}
for( FSelectedKey SelectedKey : SelectedKeys )
{
UMovieSceneSection* Section = SelectedKey.Section;
TSharedPtr<IKeyArea>& KeyArea = SelectedKey.KeyArea;
// Tell the key area to move the key. We reset the key index as a result of the move because moving a key can change it's internal index
KeyArea->MoveKey( SelectedKey.KeyHandle.GetValue(), TimeDelta );
// Update the key that moved
float NewKeyTime = KeyArea->GetKeyTime( SelectedKey.KeyHandle.GetValue() );
// If the key moves outside of the section resize the section to fit the key
// @todo Sequencer - Doesn't account for hitting other sections
if( NewKeyTime > Section->GetEndTime() )
{
Section->SetEndTime( NewKeyTime );
}
else if( NewKeyTime < Section->GetStartTime() )
{
Section->SetStartTime( NewKeyTime );
}
}
}
}