MovieSceneBlendingAccumulator.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/Map.h"
#include "Evaluation/Blending/BlendableToken.h"
#include "Evaluation/Blending/BlendableTokenStack.h"
#include "Evaluation/Blending/MovieSceneAccumulatedBlendState.h"
#include "Evaluation/Blending/MovieSceneBlendType.h"
#include "Evaluation/Blending/MovieSceneBlendingActuator.h"
#include "Evaluation/Blending/MovieSceneBlendingActuatorID.h"
#include "Evaluation/MovieSceneEvaluationScope.h"
#include "Evaluation/MovieScenePlayback.h"
#include "Misc/AssertionMacros.h"
#include "Templates/SharedPointer.h"
#include "Templates/UnrealTemplate.h"
 
class IMovieScenePlayer;
class UObject;
struct FMovieSceneEvaluationOperand;
struct FMovieSceneEvaluationScope;
struct FMovieSceneInterrogationData;
struct FPersistentEvaluationData;
 
struct FMovieSceneBlendingAccumulator
{
    template<typename ActuatorDataType>
    void BlendToken(FMovieSceneBlendingActuatorID InActuatorTypeID, const FMovieSceneEvaluationScope& InScope, const FMovieSceneContext& InContext, TBlendableToken<ActuatorDataType>&& InToken)
    {
        check(FindActuator<ActuatorDataType>(InActuatorTypeID));
 
        InToken.AnimatingScope = InScope;
        InToken.HierarchicalBias = InContext.GetHierarchicalBias();
        UnboundBlendState.Add(InActuatorTypeID, MoveTemp(InToken));
    }
    template<typename ActuatorDataType>
    void BlendToken(FMovieSceneBlendingActuatorID InActuatorTypeID, const FMovieSceneEvaluationScope& InScope, const FMovieSceneContext& InContext, ActuatorDataType&& InInputValue, EMovieSceneBlendType InBlendType, float InWeight = 1.f, int32 InBlendingPriority = INDEX_NONE)
    {
        check(FindActuator<ActuatorDataType>(InActuatorTypeID));
        UnboundBlendState.Add(InActuatorTypeID, TBlendableToken<ActuatorDataType>(Forward<ActuatorDataType>(InInputValue), InScope, InContext, InBlendType, InWeight, InBlendingPriority));
    }
 
    template<typename ActuatorDataType>
    void BlendToken(const FMovieSceneEvaluationOperand& InOperand, FMovieSceneBlendingActuatorID InActuatorTypeID, const FMovieSceneEvaluationScope& InScope, const FMovieSceneContext& InContext, TBlendableToken<ActuatorDataType>&& InToken)
    {
        check(FindActuator<ActuatorDataType>(InActuatorTypeID));
        InToken.AnimatingScope = InScope;
        InToken.HierarchicalBias = InContext.GetHierarchicalBias();
        OperandToBlendState.FindOrAdd(InOperand).Add(InActuatorTypeID, MoveTemp(InToken));
    }
    template<typename ActuatorDataType>
    void BlendToken(const FMovieSceneEvaluationOperand& InOperand, FMovieSceneBlendingActuatorID InActuatorTypeID, const FMovieSceneEvaluationScope& InScope, const FMovieSceneContext& InContext, ActuatorDataType&& InInputValue, EMovieSceneBlendType InBlendType, float InWeight = 1.f, int32 InBlendingPriority = INDEX_NONE)
    {
        check(FindActuator<ActuatorDataType>(InActuatorTypeID));
        OperandToBlendState.FindOrAdd(InOperand).Add(InScope, InActuatorTypeID, TBlendableToken<ActuatorDataType>(Forward<ActuatorDataType>(InInputValue), InScope, InContext, InBlendType, InWeight, InBlendingPriority));
    }
 
    template<typename DataType>
    TMovieSceneBlendingActuator<DataType>* FindActuator(FMovieSceneBlendingActuatorID InActuatorTypeID) const
    {
        const TSharedRef<IMovieSceneBlendingActuator>* Actuator = Actuators.Find(InActuatorTypeID);
        if (Actuator)
        {
            if ((*Actuator)->GetDataTypeID() == GetBlendingDataType<DataType>())
            {
                return &static_cast<TMovieSceneBlendingActuator<DataType>&>(Actuator->Get());
            }
        }
 
        return nullptr;
    }
 
    void DefineActuator(FMovieSceneBlendingActuatorID InActuatorTypeID, TSharedRef<IMovieSceneBlendingActuator> InActuator)
    {
        Actuators.Add(InActuatorTypeID, InActuator);
    }
 
    MOVIESCENE_API void Apply(const FMovieSceneContext& Context, FPersistentEvaluationData& PersistentData, IMovieScenePlayer& Player);
 
    MOVIESCENE_API void Interrogate(const FMovieSceneContext& Context, FMovieSceneInterrogationData& InterrogationData, UObject* AnimatedObject);
 
    TMap<FMovieSceneBlendingActuatorID, TSharedRef<IMovieSceneBlendingActuator>> Actuators;
 
private:
 
    TMap<FMovieSceneEvaluationOperand, FMovieSceneAccumulatedBlendState> OperandToBlendState;
    FMovieSceneAccumulatedBlendState UnboundBlendState;
};
 
 
 
#include "MovieSceneBlendingAccumulator.inl" // IWYU pragma: export