C++ USceneComponent::GetOwner方法代码示例

static void GetActorsToIgnore( AActor* Actor, TSet< TWeakObjectPtr<AActor> >& ActorsToIgnore )
{
	if( !ActorsToIgnore.Contains( Actor ) )
	{
		ActorsToIgnore.Add( Actor );

		// We cannot snap to any attached children or actors in the same group as moving this actor will also move the children as we are snapping to them, 
		// causing a cascading effect and unexpected results
		TArray<USceneComponent*>& AttachedChildren = Actor->GetRootComponent()->AttachChildren;

		for( int32 ChildIndex = 0; ChildIndex < AttachedChildren.Num(); ++ChildIndex )
		{
			USceneComponent* Child = AttachedChildren[ChildIndex];
			if( Child && Child->GetOwner() )
			{
				ActorsToIgnore.Add( Child->GetOwner() );
			}
		}

		AGroupActor* ParentGroup = AGroupActor::GetRootForActor(Actor, true, true);
		if( ParentGroup ) 
		{
			TArray<AActor*> GroupActors;
			ParentGroup->GetGroupActors(GroupActors, true);
			for( int32 GroupActorIndex = 0; GroupActorIndex < GroupActors.Num(); ++GroupActorIndex )
			{
				ActorsToIgnore.Add( GroupActors[GroupActorIndex] );
			}
		}
	}
}

FTransform FMovieScene3DTransformSectionRecorder::GetTransformToRecord()
{
	if(USceneComponent* SceneComponent = Cast<USceneComponent>(ObjectToRecord.Get()))
	{
		return SceneComponent->GetRelativeTransform();
	}
	else if(AActor* Actor = Cast<AActor>(ObjectToRecord.Get()))
	{
		bool bCaptureWorldSpaceTransform = false;

		USceneComponent* RootComponent = Actor->GetRootComponent();
		USceneComponent* AttachParent = RootComponent ? RootComponent->GetAttachParent() : nullptr;

		bWasAttached = AttachParent != nullptr;
		if (AttachParent)
		{
			// We capture world space transforms for actors if they're attached, but we're not recording the attachment parent
			bCaptureWorldSpaceTransform = !FSequenceRecorder::Get().FindRecording(AttachParent->GetOwner());
		}

		return (bCaptureWorldSpaceTransform || !RootComponent) ? Actor->ActorToWorld() : RootComponent->GetRelativeTransform();
	}

	return FTransform::Identity;
}

bool FSCSEditorViewportClient::InputWidgetDelta( FViewport* Viewport, EAxisList::Type CurrentAxis, FVector& Drag, FRotator& Rot, FVector& Scale )
{
	bool bHandled = false;
	if(bIsManipulating && CurrentAxis != EAxisList::None)
	{
		bHandled = true;
		AActor* PreviewActor = GetPreviewActor();
		auto BlueprintEditor = BlueprintEditorPtr.Pin();
		if (PreviewActor && BlueprintEditor.IsValid())
		{
			TArray<FSCSEditorTreeNodePtrType> SelectedNodes = BlueprintEditor->GetSelectedSCSEditorTreeNodes();
			if(SelectedNodes.Num() > 0)
			{
				FVector ModifiedScale = Scale;
				if( GEditor->UsePercentageBasedScaling() )
				{
					ModifiedScale = Scale * ((GEditor->GetScaleGridSize() / 100.0f) / GEditor->GetGridSize());
				}

				TSet<USceneComponent*> UpdatedComponents;

				for(auto It(SelectedNodes.CreateIterator());It;++It)
				{
					FSCSEditorTreeNodePtrType SelectedNodePtr = *It;
					// Don't allow editing of a root node, inherited SCS node or child node that also has a movable (non-root) parent node selected
					const bool bCanEdit = !SelectedNodePtr->IsRootComponent() && !SelectedNodePtr->IsInherited()
						&& !IsMovableParentNodeSelected(SelectedNodePtr, SelectedNodes);

					if(bCanEdit)
					{
						USceneComponent* SceneComp = Cast<USceneComponent>(SelectedNodePtr->FindComponentInstanceInActor(PreviewActor));
						USceneComponent* SelectedTemplate = Cast<USceneComponent>(SelectedNodePtr->GetEditableComponentTemplate(BlueprintEditor->GetBlueprintObj()));
						if(SceneComp != NULL && SelectedTemplate != NULL)
						{
							// Cache the current default values for propagation
							FVector OldRelativeLocation = SelectedTemplate->RelativeLocation;
							FRotator OldRelativeRotation = SelectedTemplate->RelativeRotation;
							FVector OldRelativeScale3D = SelectedTemplate->RelativeScale3D;

							// Adjust the deltas as necessary
							FComponentEditorUtils::AdjustComponentDelta(SceneComp, Drag, Rot);

							TSharedPtr<ISCSEditorCustomization> Customization = BlueprintEditor->CustomizeSCSEditor(SceneComp);
							if(Customization.IsValid() && Customization->HandleViewportDrag(SceneComp, SelectedTemplate, Drag, Rot, ModifiedScale, GetWidgetLocation()))
							{
								UpdatedComponents.Add(SceneComp);
								UpdatedComponents.Add(SelectedTemplate);
							}
							else
							{
								// Apply delta to the preview actor's scene component
								GEditor->ApplyDeltaToComponent(
										SceneComp,
										true,
										&Drag,
										&Rot,
										&ModifiedScale,
										SceneComp->RelativeLocation );
								UpdatedComponents.Add(SceneComp);

							// Apply delta to the template component object
								GEditor->ApplyDeltaToComponent(
										SelectedTemplate,
										true,
										&Drag,
										&Rot,
										&ModifiedScale,
										SelectedTemplate->RelativeLocation );
								UpdatedComponents.Add(SelectedTemplate);
							}

							UBlueprint* PreviewBlueprint = UBlueprint::GetBlueprintFromClass(PreviewActor->GetClass());
							if(PreviewBlueprint != NULL)
							{
								// Like PostEditMove(), but we only need to re-run construction scripts
								if(PreviewBlueprint && PreviewBlueprint->bRunConstructionScriptOnDrag)
								{
									PreviewActor->RerunConstructionScripts();
								}

								SceneComp->PostEditComponentMove(true); // @TODO HACK passing 'finished' every frame...

								// If a constraint, copy back updated constraint frames to template
								UPhysicsConstraintComponent* ConstraintComp = Cast<UPhysicsConstraintComponent>(SceneComp);
								UPhysicsConstraintComponent* TemplateComp = Cast<UPhysicsConstraintComponent>(SelectedTemplate);
								if(ConstraintComp && TemplateComp)
								{
									TemplateComp->ConstraintInstance.CopyConstraintGeometryFrom(&ConstraintComp->ConstraintInstance);
								}

								// Iterate over all the active archetype instances and propagate the change(s) to the matching component instance
								TArray<UObject*> ArchetypeInstances;
								if(SelectedTemplate->HasAnyFlags(RF_ArchetypeObject))
								{
									SelectedTemplate->GetArchetypeInstances(ArchetypeInstances);
									for(int32 InstanceIndex = 0; InstanceIndex < ArchetypeInstances.Num(); ++InstanceIndex)
									{
										SceneComp = Cast<USceneComponent>(ArchetypeInstances[InstanceIndex]);
										if(SceneComp && SceneComp->GetOwner() != PreviewActor)
										{
//.........这里部分代码省略.........

void UActorRecording::ProcessNewComponentArray(TInlineComponentArray<USceneComponent*>& ProspectiveComponents) const
{
	// Only iterate as far as the current size of the array (it may grow inside the loop)
	int32 LastIndex = ProspectiveComponents.Num();
	for(int32 Index = 0; Index < LastIndex; ++Index)
	{
		USceneComponent* NewComponent = ProspectiveComponents[Index];

		USceneComponent* Parent = ProspectiveComponents[Index]->GetAttachParent();

		while (Parent)
		{
			TWeakObjectPtr<USceneComponent> WeakParent(Parent);
			if (TrackedComponents.Contains(WeakParent) || ProspectiveComponents.Contains(Parent) || Parent->GetOwner() != NewComponent->GetOwner())
			{
				break;
			}
			else
			{
				ProspectiveComponents.Add(Parent);
			}

			Parent = Parent->GetAttachParent();
		}
	}

	// Sort parent first, to ensure that attachments get added properly
	TMap<USceneComponent*, int32> AttachmentDepths;
	for (USceneComponent* Component : ProspectiveComponents)
	{
		AttachmentDepths.Add(Component, GetAttachmentDepth(Component));
	}

	ProspectiveComponents.Sort(
		[&](USceneComponent& A, USceneComponent& B)
		{
			return *AttachmentDepths.Find(&A) < *AttachmentDepths.Find(&B);
		}
	);
}