How to draw debug mesh in a component visualizer?

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Ah ok, you know preview in blueprint is a world same as game world and actor behaves like in level editor (without simulation), you could detect that actor is preview world

and if it you could spawn mesh component to display mesh (you could integrate it with the things that makes work in game actully).

I checked check the visuializer thing (i actully didn’t know about PDI it seems interesting) and it seems it has vertex drawing:

But i also find PDI shape drawing utilities here allowing to make simple meshes, they seems ot exist outside of UE4 convention standards, thats why you don’t see them in API refrence:

https://github.com/EpicGames/UnrealEngine/blob/e528f9f7fa161504dd629c3b390deac93650e43a/Engine/Source/Runtime/Engine/Private/PrimitiveDrawingUtils.cpp

I tried to search UStaticMesh drawing but could not find anything useful, if anything it it links to mesh components.