bool FLayers::UpdateActorVisibility( const TWeakObjectPtr< AActor >& Actor, bool& bOutSelectionChanged, bool& bOutActorModified, bool bNotifySelectionChange, bool bRedrawViewports )
{
bOutActorModified = false;
bOutSelectionChanged = false;
if( !IsActorValidForLayer( Actor ) )
{
return false;
}
// If the actor doesn't belong to any layers
if( Actor->Layers.Num() == 0)
{
// If the actor is also hidden
if( Actor->bHiddenEdLayer )
{
Actor->Modify();
// Actors that don't belong to any layer shouldn't be hidden
Actor->bHiddenEdLayer = false;
Actor->MarkComponentsRenderStateDirty();
bOutActorModified = true;
}
return bOutActorModified;
}
bool bActorBelongsToVisibleLayer = false;
for( int32 LayerIndex = 0 ; LayerIndex < GetWorld()->Layers.Num() ; ++LayerIndex )
{
const TWeakObjectPtr< ULayer > Layer = GetWorld()->Layers[ LayerIndex ];
if( !Layer->bIsVisible )
{
continue;
}
if( Actor->Layers.Contains( Layer->LayerName ) )
{
if ( Actor->bHiddenEdLayer )
{
Actor->Modify();
Actor->bHiddenEdLayer = false;
Actor->MarkComponentsRenderStateDirty();
bOutActorModified = true;
}
// Stop, because we found at least one visible layer the actor belongs to
bActorBelongsToVisibleLayer = true;
break;
}
}
// If the actor isn't part of a visible layer, hide and de-select it.
if( !bActorBelongsToVisibleLayer )
{
if ( !Actor->bHiddenEdLayer )
{
Actor->Modify();
Actor->bHiddenEdLayer = true;
Actor->MarkComponentsRenderStateDirty();
bOutActorModified = true;
}
//if the actor was selected, mark it as unselected
if ( Actor->IsSelected() )
{
bool bSelect = false;
bool bNotify = false;
bool bIncludeHidden = true;
Editor->SelectActor( Actor.Get(), bSelect, bNotify, bIncludeHidden );
bOutSelectionChanged = true;
bOutActorModified = true;
}
}
if ( bNotifySelectionChange && bOutSelectionChanged )
{
Editor->NoteSelectionChange();
}
if( bRedrawViewports )
{
Editor->RedrawLevelEditingViewports();
}
return bOutActorModified || bOutSelectionChanged;
}
