Andreas Schreiber and Marlene Brüggemann German Aerospace Center (DLR) Cologne / Berlin, Germany VISSOFT 2017, Shanghai, China

1. Interactive Visualization of Software Components
with Virtual Reality Headsets
Andreas Schreiber and Marlene Brüggemann
German Aerospace Center (DLR)
Cologne / Berlin, Germany
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 1

2. Software for Design and Simulation in Space, Aeronautics, Transportation, …
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 2

3. OSGi-based Applications
Large applications at DLR are based
on OSGi (Eclipse RCP)
• RCE
• VirSat
• SUMO
Developed by Teams
• >5 members
• Usually high labor turnover
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 3

4. OSGi
OSGi Specification
• Module system and service platform for Java
• Bundles
• Normal components (JARs) with extra
manifest headers
• Contain packages, which contain classes
• Services
• Java objects with Java interfaces
• Connect bundles dynamically
• Dependencies
• Import and Export of code between
bundles
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 4
Source: D. Seider, A. Schreiber, T. Marquardt and M. Brüggemann, "Visualizing
Modules and Dependencies of OSGi-Based Applications," 2016 IEEE Working
Conference on Software Visualization (VISSOFT), Raleigh, NC, 2016, pp. 96-100.

5. Uses Cases for Visualization of OSGi-based Applications
Use Cases
• Getting an impression of the
dimensions of the application
• Introducing a new member of the
development team
• Starting to work on a new module
• Checking for abnormalities in
the architecture
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 5
Requirements
• General overview about the system
• Interactive exploration
• Multiple remote users (team members)

6. 2D or 3D?
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 6
Source: D. Seider, A. Schreiber, T. Marquardt and M. Brüggemann, "Visualizing
Modules and Dependencies of OSGi-Based Applications," 2016 IEEE Working
Conference on Software Visualization (VISSOFT), Raleigh, NC, 2016, pp. 96-100.

7. Visual Representation
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 7
Bundle
Packages
Services
Classes
Imports
Exports

8. Implementation
Framework
• Unity
Devices
• Oculus Rift and Google Cardboard
Data Source
• JSON model file
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 8

9. > VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 9

10. > VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 10

11. > VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 11

12. Future Work
General future work
• Graph database
• User study (w/eye tracking device)
• Voice interaction (digital assistants)
• Support for multiple users
Next version
• Developed for HTC Vive
• Changed visual concept
• AR version for Microsoft HoloLens
> VISSOFT 2017 > A. Schreiber, M. Brüggemann • Interactive Visualization of Software Components with Virtual Reality Headsets > 18.09.2017DLR.de • Chart 12

13. > 2nd European GeoInformation Symposium > A. Schreiber • Traceability and Reproducibility of Big Data Analytics Workflows Using Provenance > 21.06.2017DLR.de • Chart 13
Thank You!
Questions?
Andreas.Schreiber@dlr.de
www.DLR.de/sc | @onyame