Sequencer API

[20tab]

Sequencer API

[RonFischer]

Would you like a snippet which traverses the structure?

On Sep 26, 2016 3:09 PM, "rdeioris" [email protected] wrote:

Extend the editor api to allow scripting of the sequencer

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[rdeioris]

Yes, absolutely

[RonFischer]

Just a sketch. Please pardon the unusual formatting. It gets down to the
animation underlying a section.

UMovieScene* scene = levelSeq->GetMovieScene();

if (!scene) {

    UE_LOG(LogTemp, Error, TEXT("Level sequence %s had no movie scene"),

name)

    return "failed";

}



UE_LOG(LogTemp, Display, TEXT("Parsing sequence %s"), name);



const TArray< FMovieSceneBinding >allBindings = scene->GetBindings();

for (int bindingIndex=0; bindingIndex < allBindings.Num();

++bindingIndex) {

    FMovieSceneBinding binding = allBindings[bindingIndex];

    FString bindingName = binding.GetName();

    //FGuid bindingGuid = binding.GetObjectGuid();

    TArray< UMovieSceneTrack * > tracks = binding.GetTracks();

    int numTracks = tracks.Num();

    UE_LOG(LogTemp, Display, TEXT("Binding %s has %d tracks"),

*bindingName,
numTracks);

    for (int trackIndex = 0; trackIndex < numTracks; ++trackIndex) {

        UMovieSceneTrack* track = tracks[trackIndex];

        if (!track) {

            UE_LOG(LogTemp, Error, TEXT("\tNull track %s (ignored)"), *

(track->GetName()));

            continue;

        }

        UE_LOG(LogTemp, Display, TEXT("\tTrack %s"), *

(track->GetName()));

        const TArray<UMovieSceneSection*> sections =

track->GetAllSections();

        int numSections = sections.Num();

        for (int j = 0; j < numSections; ++j) {

            UMovieSceneSection* section = sections[j];

            if (!section) {

                UE_LOG(LogTemp, Error, TEXT("\t\tNull section (ignored)"

));

                continue;

            }

float trackStart = section->GetStartTime();

float trackEnd = section->GetEndTime();

UClass* sectionClass = section->GetClass();

FString sectionClassName = sectionClass->GetName();

UE_LOG(LogTemp, Display, TEXT("\t\t%f - %f %s"), trackStart, trackEnd, *
sectionClassName);

UMovieSceneSkeletalAnimationSection* skelAnimSection =

Cast(section);

if (!skelAnimSection) {

                UE_LOG(LogTemp, Error, TEXT("\t\t\tNon skeletal

animation section (ignored)"));

                continue;

            }

float clipStart = skelAnimSection->GetStartOffset();

            float clipEnd = skelAnimSection->GetEndOffset();

            UAnimSequenceBase* animSeq =

skelAnimSection->GetAnimSequence();

            const TArray<class UAnimMetaData*>clipMeta =

animSeq->GetMetaData();

            UE_LOG(LogTemp, Display, TEXT("\t\t\t%f - %f"),

                   clipStart, clipEnd

                   );

            for (int clipMetaIndex = 0; clipMetaIndex < clipMeta.Num();

++clipMetaIndex) {

                UAnimMetaData* animMeta = clipMeta[clipMetaIndex];

                FString animName = animMeta->GetName();

UE_LOG(LogTemp, Display, TEXT("\t\t\t\tmeta %s"), *name);

            }

        }

    }

On Mon, Sep 26, 2016 at 4:27 PM, rdeioris [email protected] wrote:

Yes, absolutely

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[RonFischer]

Also, this was in 4.13. The driving animation API changed a bit between the
two I think.

On Mon, Sep 26, 2016 at 4:31 PM, Ron Fischer [email protected] wrote:

Just a sketch. Please pardon the unusual formatting. It gets down to the
animation underlying a section.

UMovieScene* scene = levelSeq->GetMovieScene();

if (!scene) {

    UE_LOG(LogTemp, Error, TEXT("Level sequence %s had no movie scene"),

name)

    return "failed";

}



UE_LOG(LogTemp, Display, TEXT("Parsing sequence %s"), name);



const TArray< FMovieSceneBinding >allBindings = scene->GetBindings();

for (int bindingIndex=0; bindingIndex < allBindings.Num();

++bindingIndex) {

    FMovieSceneBinding binding = allBindings[bindingIndex];

    FString bindingName = binding.GetName();

    //FGuid bindingGuid = binding.GetObjectGuid();

    TArray< UMovieSceneTrack * > tracks = binding.GetTracks();

    int numTracks = tracks.Num();

    UE_LOG(LogTemp, Display, TEXT("Binding %s has %d tracks"), *bindingName,

numTracks);

    for (int trackIndex = 0; trackIndex < numTracks; ++trackIndex) {

        UMovieSceneTrack* track = tracks[trackIndex];

        if (!track) {

            UE_LOG(LogTemp, Error, TEXT("\tNull track %s (ignored)"),

*(track->GetName()));

            continue;

        }

        UE_LOG(LogTemp, Display, TEXT("\tTrack %s"), *

(track->GetName()));

        const TArray<UMovieSceneSection*> sections =

track->GetAllSections();

        int numSections = sections.Num();

        for (int j = 0; j < numSections; ++j) {

            UMovieSceneSection* section = sections[j];

            if (!section) {

                UE_LOG(LogTemp, Error, TEXT("\t\tNull section

(ignored)"));

                continue;

            }

float trackStart = section->GetStartTime();

float trackEnd = section->GetEndTime();

UClass* sectionClass = section->GetClass();

FString sectionClassName = sectionClass->GetName();

UE_LOG(LogTemp, Display, TEXT("\t\t%f - %f %s"), trackStart, trackEnd, *
sectionClassName);

UMovieSceneSkeletalAnimationSection* skelAnimSection =

Cast(section);

if (!skelAnimSection) {

                UE_LOG(LogTemp, Error, TEXT("\t\t\tNon skeletal

animation section (ignored)"));

                continue;

            }

float clipStart = skelAnimSection->GetStartOffset();

            float clipEnd = skelAnimSection->GetEndOffset();

            UAnimSequenceBase* animSeq = skelAnimSection->

GetAnimSequence();

            const TArray<class UAnimMetaData*>clipMeta =

animSeq->GetMetaData();

            UE_LOG(LogTemp, Display, TEXT("\t\t\t%f - %f"),

                   clipStart, clipEnd

                   );

            for (int clipMetaIndex = 0; clipMetaIndex <

clipMeta.Num(); ++clipMetaIndex) {

                UAnimMetaData* animMeta = clipMeta[clipMetaIndex];

                FString animName = animMeta->GetName();

UE_LOG(LogTemp, Display, TEXT("\t\t\t\tmeta %s"), *name);

            }

        }

    }

On Mon, Sep 26, 2016 at 4:27 PM, rdeioris [email protected]
wrote:

Yes, absolutely

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[rdeioris]

Ok, thanks to your pdf and the pasted code i have a clear view of the sequencer.

I will start adding access to the bindings. Next step will be mapping guid to something useful.

Do you know if there is any specific behaviour for camera track ?

[RonFischer]

I need to look at camera tracks. Have not tried to walk any examples yet.

I am deep into C++ code for parsing skeletal mesh tracks down to their
animation curves.

The spawn and possess object guids are tricky. E.g. possess bindings are
resolved by either the level sequence or a movie scene instance. Spawn is
just a template.

I am also still trying to fully understand the bone to skeleton index
through track index map to curve API chain.

On Sep 29, 2016 4:49 PM, "rdeioris" [email protected] wrote:

Ok, thanks to your pdf and the pasted code i have a clear view of the
sequencer.

I will start adding access to the bindings. Next step will be mapping guid
to something useful.

Do you know if there is any specific behaviour for camera track ?

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[rdeioris]

Here i am tracking api progresses:

https://github.com/20tab/UnrealEnginePython/blob/master/sequencer_API.md

feel free to improve it with pull requests

[rdeioris]

@RonFischer Just grasped camera track system. Tomorrow i will add more functions to the api

[RonFischer]

@rdeioris thank you! I look forward to review, comment and build the new
code.

On Oct 21, 2016 2:27 PM, "rdeioris" [email protected] wrote:

@RonFischer https://github.com/RonFischer Just grasped camera track
system. Tomorrow i will add more functions to the api

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[rdeioris]

The sequencer api suppot has been improved heavily thanks to Matthew Whelan (http://www.mattwhelan.com/) sponsorship:

https://github.com/20tab/UnrealEnginePython/blob/master/examples/sequencer_scripting.py

This is a first round of patches, more to come soon