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> Unreal Engine API Reference > Runtime > MovieScene > Evaluation > FMovieSceneTrackImplementation > FMovieSceneTrackImplementation::Initialize

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FMovieSceneTrackImplementation::Initialize

Perform pre frame initialization on the specified segment of the track.

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References

Module	MovieScene
Header	/Engine/Source/Runtime/MovieScene/Public/Evaluation/MovieSceneTrackImplementation.h
Include	#include "Evaluation/MovieSceneTrackImplementation.h"

Syntax

virtual void Initialize
(
    const FMovieSceneEvaluationTrack & Track,
    TArrayView< const FMovieSceneFieldEntry_ChildTemplate > Children,
    const FMovieSceneEvaluationOperand & Operand,
    const FMovieSceneContext & Context,
    FPersistentEvaluationData & PersistentData,
    IMovieScenePlayer & Player
) const

Remarks

Perform pre frame initialization on the specified segment of the track. Will generally call Initialize on all child templates in the current segment as well. @note This function is intended to allow pre-frame set up, and should avoid mutating any state. Only called if EnableOverrides(CustomInitializeFlag) has been called (see SetupOverrides).

Parameters

Parameter	Description
Track	The parent evaluation track that has knowledge of all child tracks and segments
SegmentID	The identifier of the segment at the current time
Operand	Unique handle to the operand on which we are to operate. May represent multiple objects. Resolve through IMovieScenePlayer::FindBoundObjects(Operand)
Context	Evaluation context specifying the current evaluation time, sub sequence transform and other relevant information.
PersistentData	Persistent data store which can be used to store arbitrary data pertaining to the current template that may be required in Evaluate(Swept)
Player	The movie scene player currently playing back this sequence

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