Exploration with Virtual Reality in ExplorViz Bachelors Project - - PowerPoint PPT Presentation

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Exploration with Virtual Reality in ExplorViz Bachelors Project - - PowerPoint PPT Presentation

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Collaborative Software Exploration with Virtual Reality in ExplorViz Bachelors Project Presentation Daniel Knig & Malte Hansen 20.09.2018 Outline Motivation Concept Live Demo Evaluation Conclusions / Future Work

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Collaborative Software Exploration with Virtual Reality in ExplorViz

Bachelor’s Project Presentation

Daniel König & Malte Hansen 20.09.2018

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Outline

  • Motivation
  • Concept
  • Live Demo
  • Evaluation
  • Conclusions / Future Work

2 Collaborative Software Exploration with Virtual Reality in ExplorViz

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Motivation

  • Goal: VR mode of ExplorViz [Fittkau et al. 2017] to be collaboratively

usable

  • Alternative to working as a team in front of a screen
  • Analog approach to 3D printed models (but better)
  • Geographical independence

3 Collaborative Software Exploration with Virtual Reality in ExplorViz

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General Concept

  • Users should use the same virtual space
  • Synchronization of the users’ worlds
  • Any user can manipulate landscape and applications
  • Users should be able to highlight components for others

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Concept - Components

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[Zirkelbach et al. 2018]

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Concept - Architecture

  • Star topology
  • Backend saves latest state of

landscape and applications

  • Connection via WebSockets
  • JSON as data interchange format

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Concept Visualization

Concept Drawing [Häsemeyer 2017]

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Concept - Menu

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  • Add additional functionalities
  • Make available via menu
  • Menu attached to left controller
  • Interact using right controller
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Concept – Text Overlays

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  • Inform users about connection

updates

  • Add hints for improved usability
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Live Demo

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Evaluation – Procedure

  • Gather personal data
  • Give introduction to ExplorViz and controls
  • Training phase with small landscape
  • Read them tasks
  • Probands rate the user experience

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Evaluation – Experimental Setup

  • 3 computers in same room connected via LAN
  • 1 running ExplorViz backend
  • 2 running ExplorViz frontend with VR
  • Oculus Rift with 3 sensors, 2 controllers
  • HTC Vive with 2 base stations, 2 controllers

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Evaluation – Participants (preliminary)

  • 20 participants (10 groups of two)
  • Average participant:
  • 25 years old, male
  • Studies computer science
  • Experienced with object-oriented programming
  • No experience with ExplorViz or VR
  • Knew the other participant in their group

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Evaluation – Results & Discussion (preliminary)

  • Very positively rated:
  • Impression to be in the same virtual room
  • Movement of application
  • Absence of nausea during non-spectating phase
  • Intuitive movement
  • Amount of text overlays

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Evaluation – Results & Discussion (preliminary)

  • Very positively rated:
  • Movement synchronization (without delay)
  • Highlighting
  • Menu structure
  • VR extension suitable for teamwork

15 Collaborative Software Exploration with Virtual Reality in ExplorViz

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Evaluation – Results & Discussion (preliminary)

  • Mixed rating of spectating feature
  • 6 probands felt nausea or alike, all of which are afraid of heights
  • Bigger study needed for more significant correlations

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Conclusions

  • VR mode now supports collaborative software exploration
  • Usability improvements by adding overlays and customizations
  • Usability validated through conducted evaluation

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Future Work

  • Further usability improvements

(e.g. options to switch left/right controls)

  • Tutorial for beginners
  • Further studies with more participants
  • Augmented reality

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Thank you for your attention!

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References

  • [Häsemeyer 2017] T. Häsemeyer. Kollaboratives Erkunden von Software mithilfe virtueller Realität

in ExplorViz. Bachelor thesis. Kiel University, Sept. 2017.

  • [Fittkau et al. 2017] F. Fittkau, A. Krause, and W. Hasselbring. Software Landscape and Application

Visualization for System Comprehension with ExplorViz. Information and Software Technology 87 (2017).

  • [Zirkelbach et al. 2018] C. Zirkelbach, A. Krause, and W. Hasselbring. On the Modernization of

ExplorViz towards a Microservice Architecture. In: Combined Proceedings of the Workshops of the German Software Engineering Conference 2018. CEUR Workshop Proceedings, Feb. 2018.

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