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Stand-In Outliner

The Stand-In outliner is responsible for generating Stand-Ins. A Stand-In is an optimized replacement Actor for a collection of source Actors. See the Stand-In Actor documentation for a more detailed description of what a Stand-In is and what its use cases are.

The Stand-In outliner is located under Window → Stand-In Outliner inside the UE5 editor. The following sections describe all the different parts of the Stand-In outliner.

Figure 1: The Stand-In outliner and its parts.
Figure 1: The Stand-In outliner and its parts.
NoColorDescription
1——Toolbar widget
2——Outliner widget
3——Settings widget
4——Stand-In Actor context menu
5——Static Mesh Actor context menu

Toolbar widget

The toolbar widget has two buttons:

  • Create new Stand-In Actor based on the level editor selection.
  • Build all Stand-In Actors that have not yet been built. If you click the options menu (the three little dots next to the Build button) you are able to Rebuild all Stand-In Actors.

Outliner widget

The outliner widget provides an overview of all Stand-In Actors in the level.

UI ElementDescription
Eye iconControls Actor visibility
NameActor name
TypeType of processing (Near or Far)
SourcesNumber of source Actors
TrianglesNumber of total triangles
LevelThe level of where this Stand-In Actor exists
UserDataSimplygon specific UserData (clipping geometry, occluder)

Settings widget

The Stand-In settings widget will appear to the right when selecting a Stand-In Actor in the outliner. The first setting, the Pipeline setting, decides which type of Stand-In to be generated; Near, Far and BillboardCloud. When the type has been specified the widget will expand and list Stand-In type specific settings. See Stand-In Actor for a more detailed description of each type.

Near-, Far- and BillboardCloud Stand-In settings:

Figure 2: Near Stand-In settings.
Figure 2: Near Stand-In settings.
Figure 3: Far Stand-In settings.
Figure 3: Far Stand-In settings.
Figure 4: BillboardCloud Stand-In settings.
Figure 4: BillboardCloud Stand-In settings.

Stand-In Actor context menu

The following actions are accessible through the Stand-In Actor context menu:

  • Build or Rebuild single Stand-In Actor by right-clicking and choose Build or Rebuild
  • Focus Actor in level editor by double clicking any Actor in Stand-In outliner.
  • Remove source Actor from Stand-In Actor by right-clicking the source Actor and choose Remove from Stand-In Actor

Static Mesh Actor context menu

The following actions are accessible through the Static Mesh Actor context menu:

  • Remove from Stand-In Actor by right-clicking the source Actor and choose Remove from Stand-In Actor
  • Tag Actor as Clipping Geometry (SimplygonUserData)
  • Tag Actor as Occluder (SimplygonUserData)
  • Tag Actor as Geometry Camera Path (SimplygonUserData)
  • Remove tag (Simplygon specific)