Running on a Projection Wall- Observer or Single User

This guide explains how to display live VR sessions on a PRISM immersive theater or projection-based VR system using  the E-Learning Lab. It covers both multi-user observer views and single-user projection setups, including keyboard navigation and advanced 3D projection configuration.

Overview: Display Options for Projection Systems

When running a VR session, there are two primary ways to display the experience on a PRISM or projection wall:

• Observer (Bird’s-Eye) View
  A free-flying camera used to observe one or more users from outside their perspective.
  
  

• First-Person View
  Displays exactly what a participant sees (single user or selected client).
  
  

Both options can be run on a standard desktop system connected to a projection or PRISM display.

Running a Bird’s-Eye / Observer View (Multi-User)

The observer view is ideal for:

• Classroom demonstrations
  
  

• Research observation
  
  

• Public presentations
  
  

• Multi-user experiment monitoring
  
  

Step-by-Step Setup

1. Start the Server
   
   

   • Launch the E-Learning Lab Instructor
     
     

2. Start Participant Clients
   
   

   • Run the appropriate number of client scripts for your VR users.

3. Launch an Additional Client for PRISM / Projection
   
   

   • On the computer driving the PRISM or projection system, run one additional client.
     
     

   • This client connects to the same server but is used only for display.
     
     

4. Select the Client Environment
   
   

   • Recommended options:
     
     

     • Empty – if you want no visible avatar or interaction
       
       

     • Security Camera – if you want a visible camera object inside the scene

5. Choose Hardware Type
   
   

   • Select Desktop as the hardware option.
     
     

Navigating the Observer View

Once the scene starts, you can control the observer camera using the keyboard:

Movement & Rotation

• W / A / S / D – Move forward, left, backward, right
  
  

• Z / X – Move down / up
  
  

• Q / E – Rotate left / right
  
  

Utility Controls

• R – Reset viewpoint
  
  

• Shift – Lock/unlock movement
  
  

• / – Take a screenshot
  
  

• . (Period) – Toggle overlays (timers, view counts, trial info)
  
  

• F2 – Toggle fullscreen mode
  
  

Note: Fullscreen may apply to only one monitor. For PRISM systems, you can manually stretch the window across all displays to span the full wall.

Running a First Person or Single-User Projection View

For single-user scenarios (no server/client architecture):

1. Run an E-Learning Lab  Single  or Instructor Mode (or as an  additional Client)
   
   

2. Choose Desktop as the hardware type
   
   

3. Connect the output to the PRISM or projection system
   
   

This mode mirrors the participant’s first-person view directly onto the projection display.

Running a 3D Projection Wall (Advanced Setup)

To run stereo or multi-display projection systems, you must use a custom vizconnect configuration.

E-Learning Lab Configuration

Open the globalConfig file
Set:  LOCAL_VIZCONNECT = True

Navigate to:  local_vizconnects/vizconnect_config_projection.py

Modify the displays section to match your projector layout and resolution

Best Practices & Tips

• Use Observer Mode for teaching, demos, and research monitoring
  
  

• Use First-Person Mode for immersive presentations
  
  

• Disable overlays (. key) for clean public displays
  
  

• Test fullscreen behavior before live demos
  
  

• For large PRISM systems, ensure GPU output alignment matches projector mapping