Preview Scene Settings

The Preview Scene Settings panel enables you to quickly assess what your assets will look like in multiple environments and light scenarios without having to set up these scenes within your level. Several different settings can be defined and applied from Skeletal Meshes to lighting and Post Process effects all within each of the Animation Tools inside the editor.

The location of the Preview Scene Settings panel can be found in the upper-right corner of the Animation Tool you are using.

If you close the Preview Scene Settings panel, you can re-enable it from the Window option from the tool bar.

You can also access the Preview Scene Setting panel from the Viewport Options drop-down menu.

Animation

This section is used to define the method in which to apply animation to the preview mesh.

Option	Description
Animation Mode	The method by which the preview is animated (Default, Reference Pose or Use Specific Animation).
Animation	The preview animation to use.

Mesh

This section enables you to change the Skeletal Mesh used for previewing.

Option	Description
Preview Mesh (Animation)	The Skeletal Mesh to use for previewing.

Each type of asset, whether it's an Animation Sequence, Animation Blueprint, or a Skeleton can store and be overriden with different Preview Meshes. The order of overriding goes from Skeleton to Asset, so if an asset doesn't have an override, it defaults to the Skeleton's Preview Mesh.

Additional Meshes

This section enables you to include additional Skeletal Meshes to the preview scene as part of a Preview Mesh Collection.

Option	Description
Additional Meshes	The Preview Mesh Collection to use as included meshes for previewing.
Skeletal Meshes	The Skeletal Mesh assets that are included in the specified Preview Mesh Collection.

Preview Mesh Collections are useful when you have several Skeletal Meshes that are related (like components of a character). Preview Mesh Collections are also very flexible and support the use of unsaved assets within an unsaved collection. They can also be extended by projects that might need to interface with other systems that can "build" a Skeletal Mesh out of other Skeletal Mesh parts.

Settings

This section contains various settings that define the makeup of the viewport for previewing.

Option	Description
Profile Name	Name to identify the profile.
Shared Profile	Whether or not this profile should be stored in the project.ini file.
Directional Light Intensity	Manually set the directional light intensity (0.0 - 20.0).
Direction Light Color	Manually set the directional light color.
Sky Light Intensity	Manually set the sky light intensity (0.0 - 20.0).
Rotate Sky and Directional Lighting	Toggle rotating of the sky and directional lighting. Press K and drag for manual rotating of Sky and L for Directional Lighting.
Show Environment	Toggle visibility of the environment sphere.
Show Floor	Toggle visibility of the floor mesh.
Environment Cube Map	Sets the environment cube map used for sky lighting and reflections.
Post Processing Enabled	Whether or not the Post Processing should influence the scene.
Lighting Rig Rotation	Current rotation value of the sky in degrees (0 - 360).
Rotation Speed	Speed at which the sky rotates when rotating is toggled.

Your settings can be saved as a Profile and you can add and switch between Profiles from the Profiles menu at the bottom of the window.

Color Grading

This section includes various Color Grading options for the viewport.

Lens

This section includes the ability to apply various Post Processing effects to the viewport.

Rendering Features

This section includes the ability to apply various lighting effects to the viewport.

Tonemapper

In this section, you can define various Tone Mapping functions.

Mobile Tonemapper

This section includes the ability to define Tone Mapping functions for mobile platforms.

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