Notes

Outline

Object Design

Presentation Overview Scenario from Project Agreement Hardware / Software Allocation AR Subsystem Object Model API Decisions Sequence Diagram for Scenario Development Status

Scenario – Initialization Herb turns on his PEDD and establishes a network connection He selects “Get Workorder” from the pulldown menu. An authentication window appears, requesting username/password After authentication, a workorder is retrieved, the UI is configured for an inspection.

Initialization – Continued A calibration panel is added to the display A model view is added to the display The current view is from the front of the plane, approximately 5 feet from the ground Herb walks to the front of the plane and aligns his own view with the plane Herb clicks “finish calibration.” Herb’s position/orientation are now reflected in the model view.

Hardware Allocation

Hardware Allocation AR concerned with managing HMD PEDD Orientation device Positioning device Other hardware is managed by other subsystems

Object Model UserInterface UserInterfaceManager AREvents AREventListeners Position and Orientation classes Initiate or end calibration

UserInterface Clients provide two user interfaces Full-Screen View Large buttons Detailed information Windowed View Minimal information Designed to fit into one of the smaller panels.

User Interface Mockup

UserInterfaceManager UI Manipulation Add (register) UI Remove (unregister) UI Change display status of UI Subscribe to event classes

Events StickyEvent Indicate placement of stickies. VectorEvent Indicate a changed position or orientation of the mechanic UIStatusEvent Indicates a change in the display of a UI element.

EventListeners Use addEventListener() from the UserInterfaceManager class to listen to events.

Position & Orientation VectorDevice: PositionDevice Hardware device (GPS) or, ScriptPosition may simulate movements. OrientationDevice Hardware device (3-axis Gyroscope) or, ScriptOrientation may simulate head movements.

AR Javadocs Javadocs

Services used by AR Constructors and Destructors for: DBClient Created at initialization Handles authentication and retrieval of data for other subsystems. MaintananceControl Responsible for beginning an inspection/repair session.

Decorated Scenario

Development Status Analysis Completed Event model User interface management Doesn’t include a specific user interface, however Initialization and termination sequence Incomplete User interface design Many dependencies on the other subsystems

Status – System Design Completed except for specific user interface issues. The newly formed/recognized UI subsystem is intended to complete this analysis and design.

Status – Object Design Completed except for miscellaneous implementation objects. To be handled during implementation.

Status – Implementation Begins ASAP (after Thanksgiving)