SceneExplorer

SceneExplorer enables a precise replay of a Participant's Session and is often referred to by customers as an after-action-review (AAR). You can step through a complete recording of the Scene, pausing and investigating everything from Events and Dynamics to Fixations and Sensors.

Controls

The default camera will rotate the camera with the left mouse button, pan with the right button and zoom with the scroll wheel. The arrow (or WASD) keys will move the camera forward and backward and left and right.

Dynamic Objects

You can click on a Dynamic Object in the 3D view to examine metrics about that Dynamic Object. This will set the camera to focus on the selected Dynamic Object - Left Mouse button will orbit the camera. You can press the Back to Scene View button to return the scene camera to the previous position.

These metrics display metrics for this Dynamic Object for the current Session with comparisons to all Sessions. This can be downloaded as a CSV.

Custom Events

Custom Events are displayed as billboard icons in the Scene. They are visible if the Current Replay Timer has passed the time the Event was recorded in the Session. They will be displayed in the position they were recorded.

You can click on an Event to see the Event Name and the properties. If there are multiple Events at the same position, a menu appears in the bottom right to display all nearby Events.

Options

User Menu

This drop down menu allows you to view other Participant Sessions.

• The Search Box allows you to search by a Session's name.
• Only the last 10 Sessions are displayed on this list. It is recommended to use the Dashboard to find specific sessions instead of browsing on SceneExplorer.
• A number of Sessions can be enabled from this list with the checkbox.
• Activate Selected Sessions will load those Session data into SceneExplorer.

Gaze Menu

These are the options for displaying where the Participant looked.

• Fixation/Gaze Mode displays the Gaze or Fixation from the HMD to the world as a Cone or Line. This is only visible if Fixations have been recorded.
• Cone/Line Display toggles between Gaze and Fixation (if Fixations have been recorded).
• Show Vector toggles between Gaze and Fixation (if Fixations have been recorded).

Fixations display a Sphere representing the Fixation Point (the radius shows the fixation size assuming a 1 degree Fixation Radius).

Gaze displays an approximate heatmap from Gaze data. As the radius between Gaze data overlaps, the Heatmap will use Blue, Yellow and Red colours.

• Heatmap Size controls the radius from a Gaze Point that is required to display the heatmap.
• Heatmap Intensity controls the falloff from the position of the Gaze Data.

Path Menu

This has options for displaying the Participant's position through the scene.

• Floor/Head Path Type will change if the position is represented at the Participant's feet or represented at the HMD position.
• Visible toggles the visibility of the participant's path.
• Path Weight increases the width of the line that draws the Participant's path.

Events Menu

These enable showing/hiding Events:

• Visible enables the visibility of all Events sprites.
• Size changes the size of all Events sprites.
• The Search Box and list of Events allow specific visibility controls, configuring icons for display and icon colour.

Advanced Menu

There are several options here:

• Toggle Name Plates displays the Participant's name overhead. This can be useful when you are viewing several Participants at once.
• High Performance enables GPU acceleration for displaying SceneExplorer.
• Ambient Lighting enables a light to illuminate the scene.
• Ambient Light Intensity controls the intensity of the ambient light.
• Original Lights enables the lights exported with the scene geometry. There may be a performance impact with lots of lights, so this is disabled by default.
• 3D Grid places a grid on the horizontal plane at 0 elevation.
• Clear Scene Cache Clears the locally saved cache files. The local cache reduces the time to load the scene.

Screenshot

Saves a screenshot of the scene from the current camera perspective.

Share Menu

This will create a link to this Session and save the camera position and time.

Help Menu

Displays the controls for the Free Look Camera.

Controllers

If controllers are configured in the SDK, the Participant's inputs are recorded and displayed in the top left. When a button is pressed it will appear green. If the input is a range (such as a trigger) the strength of the input is shown as the saturation of the green colour.

Playback Controls

Playback speed

Along the bottom of the window is a timeline. The left side is the beginning of the Session, and the right side is the end of the Session. In the bottom left there are controls to replay the Session at normal speed, double speed and triple speed. Spacebar will pause and continue the replay.

Sensors

In the bottom right, you can select a Sensor to display as a graph. The graph will display the Sensor values along the bottom. You can scale the Sensor values with this slider.

Sensors are grouped by their names. See Unity or Unreal for more details.

On the right of each built-in sensor is a short description about what it represents.

Camera Options

You can select alternate camera control options from the menu in the bottom right.

• Free Look Camera (default) will rotate the camera with the left mouse button, pan with the right button and zoom with the scroll wheel. The arrow (or WASD) keys will move the camera forward and backward and left and right.

• Follow User will disable most controls and focus the camera on the selected Participant. Left Mouse button will orbit the camera around the target and the scroll wheel will zoom.

• First Person Camera will disable all camera controls and put the camera in the Point of View of the Participant.

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