Isolate actors
Use isolation when the UMG viewport should show a subset of the level — character preview, minimap-style render, or debug views.
Show only specific actors
Section titled “Show only specific actors”flowchart LR Select[Pick actors in level] --> Iso[Isolate Actors] Iso --> GVW[Only those actors render] Reset[Un Isolate Actors] --> All[Full world visible]
Blueprint example
Section titled “Blueprint example”- Get a reference to your Game Viewport Widget (variable or Bind Widget).
- Build an array of Actor references (e.g. preview mesh + lighting rig).
- Call Isolate Actors.
- When done, call Un Isolate Actors.
By class (with optional tag)
Section titled “By class (with optional tag)”Event BeginPlay → Get Game Viewport Widget → Isolate Actors By Class Actor Class: BP_PreviewCharacter Optional Tag: PreviewHide actors instead
Section titled “Hide actors instead”Use Hide Actors / Hide Actors By Class when you want the full scene minus a few elements (e.g. hide the player pawn in a mirror viewport). Call Un Hide Actors to reset.
Presets
Section titled “Presets”| Preset | Nodes | Best for |
|---|---|---|
| Character preview | Isolate Actors with mannequin + backdrop | Inventory / locker UI |
| Debug collision | Update View Mode → Collision Pawn | Designer tools |
| Tagged props only | Isolate Actors By Class + tag | Showcase pedestals |