MotionTrajectoryTypes.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Algo/BinarySearch.h"
#include "UObject/ObjectMacros.h"
#include "MotionTrajectoryTypes.generated.h"
 
USTRUCT(BlueprintType, Category="Motion Trajectory")
struct UE_DEPRECATED(5.6, "FTrajectorySample has been deprecated. Instead use FTransformTrajectorySample.") FTrajectorySample
{
    GENERATED_BODY()
 
    // The relative accumulated time that this sample is associated with
    // Zero value for instantaneous, negative values for the past, and positive values for the future
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Motion Trajectory")
    float AccumulatedSeconds = 0.f;
 
    // Position relative to the sampled in-motion object
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Motion Trajectory")
    FTransform Transform = FTransform::Identity;
 
    // Linear velocity relative to the sampled in-motion object
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Motion Trajectory")
    FVector LinearVelocity = FVector::ZeroVector;
 
    PRAGMA_DISABLE_DEPRECATION_WARNINGS
    // Linear interpolation of all parameters of two trajectory samples
    ENGINE_API FTrajectorySample Lerp(const FTrajectorySample& Sample, float Alpha) const;
 
    // Centripetal Catmull–Rom spline interpolation of all parameters of two trajectory samples
    ENGINE_API FTrajectorySample SmoothInterp(const FTrajectorySample& PrevSample
        , const FTrajectorySample& Sample
        , const FTrajectorySample& NextSample
        , float Alpha) const;
    PRAGMA_ENABLE_DEPRECATION_WARNINGS
    
    // Concatenates DeltaTransform before the current transform is applied and shifts the accumulated time by 
    // DeltaSeconds
    ENGINE_API void PrependOffset(const FTransform DeltaTransform, float DeltaSeconds);
 
    ENGINE_API void TransformReferenceFrame(const FTransform DeltaTransform);
 
    // Determines if all sample properties are zeroed
    ENGINE_API bool IsZeroSample() const;
};