C++ (Cpp) UWorld::GetLightMapsAndShadowMaps Examples

Example #1

File: WorldSettingsDetails.cpp Project: JustDo1989/UnrealEngine4.11-HairWorks

void FLightmapCustomNodeBuilder::RefreshLightmapItems()
{
	LightmapItems.Empty();

	FWorldContext& Context = GEditor->GetEditorWorldContext();
	UWorld* World = Context.World();
	if ( World )
	{
		TArray<UTexture2D*> LightMapsAndShadowMaps;
		World->GetLightMapsAndShadowMaps(World->GetCurrentLevel(), LightMapsAndShadowMaps);

		for ( auto ObjIt = LightMapsAndShadowMaps.CreateConstIterator(); ObjIt; ++ObjIt )
		{
			UTexture2D* CurrentObject = *ObjIt;
			if (CurrentObject)
			{
				FAssetData AssetData = FAssetData(CurrentObject);
				const uint32 ThumbnailResolution = 64;
				TSharedPtr<FAssetThumbnail> LightMapThumbnail = MakeShareable( new FAssetThumbnail( AssetData, ThumbnailResolution, ThumbnailResolution, ThumbnailPool ) );
				TSharedPtr<FLightmapItem> NewItem = MakeShareable( new FLightmapItem(CurrentObject->GetPathName(), LightMapThumbnail) );
				LightmapItems.Add(NewItem);
			}
		}
	}

	if ( LightmapListView.IsValid() )
	{
		LightmapListView->RequestListRefresh();
	}
}