119 lines
4.6 KiB
C++
119 lines
4.6 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Channels/FloatChannelCurveModel.h"
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#include "Channels/CurveModelHelpers.h"
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#include "Channels/FloatChannelKeyProxy.h"
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#include "Channels/MovieSceneChannelData.h"
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#include "Channels/MovieSceneChannelHandle.h"
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#include "Channels/MovieSceneFloatChannel.h"
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#include "Containers/Array.h"
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#include "Containers/UnrealString.h"
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#include "CurveDataAbstraction.h"
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#include "CurveEditorScreenSpace.h"
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#include "Curves/KeyHandle.h"
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#include "IBufferedCurveModel.h"
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#include "Internationalization/Text.h"
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#include "Math/Range.h"
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#include "Math/UnrealMathSSE.h"
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#include "Misc/FrameNumber.h"
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#include "Misc/FrameRate.h"
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#include "MovieScene.h"
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#include "MovieSceneSection.h"
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#include "Templates/Casts.h"
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#include "Templates/Tuple.h"
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#include "Templates/UnrealTemplate.h"
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#include "UObject/Package.h"
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#include "UObject/UObjectGlobals.h"
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#include "UObject/UnrealNames.h"
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#include "UObject/WeakObjectPtr.h"
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#include "UObject/WeakObjectPtrTemplates.h"
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class FCurveEditor;
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class ISequencer;
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class UObject;
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/**
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* Buffered curve implementation for a float channel curve model, stores a copy of the float channel in order to draw itself.
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*/
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class FFloatChannelBufferedCurveModel : public IBufferedCurveModel
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{
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public:
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/** Create a copy of the float channel while keeping the reference to the section */
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FFloatChannelBufferedCurveModel(const FMovieSceneFloatChannel* InMovieSceneFloatChannel, TWeakObjectPtr<UMovieSceneSection> InWeakSection,
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TArray<FKeyPosition>&& InKeyPositions, TArray<FKeyAttributes>&& InKeyAttributes, const FString& InLongDisplayName, const double InValueMin, const double InValueMax)
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: IBufferedCurveModel(MoveTemp(InKeyPositions), MoveTemp(InKeyAttributes), InLongDisplayName, InValueMin, InValueMax)
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, Channel(*InMovieSceneFloatChannel)
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, WeakSection(InWeakSection)
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{}
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virtual void DrawCurve(const FCurveEditor& InCurveEditor, const FCurveEditorScreenSpace& InScreenSpace, TArray<TTuple<double, double>>& OutInterpolatingPoints) const override
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{
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UMovieSceneSection* Section = WeakSection.Get();
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if (Section && Section->GetTypedOuter<UMovieScene>())
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{
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FFrameRate TickResolution = Section->GetTypedOuter<UMovieScene>()->GetTickResolution();
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const double StartTimeSeconds = InScreenSpace.GetInputMin();
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const double EndTimeSeconds = InScreenSpace.GetInputMax();
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const double TimeThreshold = FMath::Max(0.0001, 1.0 / InScreenSpace.PixelsPerInput());
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const double ValueThreshold = FMath::Max(0.0001, 1.0 / InScreenSpace.PixelsPerOutput());
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Channel.PopulateCurvePoints(StartTimeSeconds, EndTimeSeconds, TimeThreshold, ValueThreshold, TickResolution, OutInterpolatingPoints);
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}
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}
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virtual bool Evaluate(double InTime, double& OutValue) const override
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{
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return UE::MovieSceneTools::CurveHelpers::Evaluate(InTime, OutValue, Channel, WeakSection);
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}
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private:
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FMovieSceneFloatChannel Channel;
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TWeakObjectPtr<UMovieSceneSection> WeakSection;
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};
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FFloatChannelCurveModel::FFloatChannelCurveModel(TMovieSceneChannelHandle<FMovieSceneFloatChannel> InChannel, UMovieSceneSection* OwningSection, TWeakPtr<ISequencer> InWeakSequencer)
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: FBezierChannelCurveModel<FMovieSceneFloatChannel, FMovieSceneFloatValue, float>(InChannel, OwningSection, InWeakSequencer)
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{
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}
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void FFloatChannelCurveModel::CreateKeyProxies(TArrayView<const FKeyHandle> InKeyHandles, TArrayView<UObject*> OutObjects)
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{
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for (int32 Index = 0; Index < InKeyHandles.Num(); ++Index)
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{
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UFloatChannelKeyProxy* NewProxy = NewObject<UFloatChannelKeyProxy>(GetTransientPackage(), NAME_None);
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NewProxy->Initialize(InKeyHandles[Index], GetChannelHandle(), this->GetOwningObjectOrOuter<UMovieSceneSection>());
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OutObjects[Index] = NewProxy;
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}
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}
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TUniquePtr<IBufferedCurveModel> FFloatChannelCurveModel::CreateBufferedCurveCopy() const
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{
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FMovieSceneFloatChannel* Channel = GetChannelHandle().Get();
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if (Channel)
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{
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TArray<FKeyHandle> TargetKeyHandles;
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TMovieSceneChannelData<FMovieSceneFloatValue> ChannelData = Channel->GetData();
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TRange<FFrameNumber> TotalRange = ChannelData.GetTotalRange();
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ChannelData.GetKeys(TotalRange, nullptr, &TargetKeyHandles);
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TArray<FKeyPosition> KeyPositions;
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KeyPositions.SetNumUninitialized(GetNumKeys());
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TArray<FKeyAttributes> KeyAttributes;
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KeyAttributes.SetNumUninitialized(GetNumKeys());
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GetKeyPositions(TargetKeyHandles, KeyPositions);
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GetKeyAttributes(TargetKeyHandles, KeyAttributes);
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double ValueMin = 0.f, ValueMax = 1.f;
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GetValueRange(ValueMin, ValueMax);
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return MakeUnique<FFloatChannelBufferedCurveModel>(Channel, this->GetOwningObjectOrOuter<UMovieSceneSection>(), MoveTemp(KeyPositions), MoveTemp(KeyAttributes), GetLongDisplayName().ToString(), ValueMin, ValueMax);
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}
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return nullptr;
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}
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