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A platform for constructing virtual spaces
RISE, Swedish ICT, SICS.
RISE, Swedish ICT, SICS.
RISE, Swedish ICT, SICS, Computer Systems Laboratory.ORCID iD: 0000-0002-6718-0144
1998 (English)Conference paper, (Refereed)
Abstract [en]

Virtual spaces (worlds) applications are among the most complex of distributed applications. They are both distributed and open. Minimizing network latency, fault-tolerance, persistence, resource control, and security are also important aspects. Designing and implementing virtual spaces is currently difficult in that the already not insignificant complexities of program functionality, distribution, openness, and efficiency are interwound and cannot be tackled separately. We present a distributed programming language, distributed-Oz, that greatly reduces the complexity of distributed programming by clearly separating the different aspects of distributed programming. The design and implementation of distributed-Oz is ongoing work, but considerable progress has been made. The current prototype demonstrates network transparency, that computations behave the same way regardless of how the computation is partitioned between different sites. This is the basis for realizing clean separation of the functionality aspect from other aspects. Network awareness allows the programmer to predict and control network communication patterns. The current system gives the programmer the means to tackle separately the aspects of openness, efficiency (minimizing latency), distribution, and functionality. We have extended distributed-Oz with a tool for graphics in a distributed setting. This extends the idea of network transparency and network awareness to graphics. From the programmers point of view graphics programming for a multi-user application is virtually the same as programming for a single-user application. The differences are necessary extensions for achieving network and site awareness, such as visualization control (deciding which users should see what). Finally we consider virtual space applications, and propose a number of abstractions for use by developers of virtual spaces, relating them to the properties of distributed-Oz upon which they are based.

Place, publisher, year, edition, pages
1998, 1. , 10 p.
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:ri:diva-22259OAI: oai:DiVA.org:ri-22259DiVA: diva2:1041804
Conference
Proceedings of the Virtual Worlds and Simulation Conference, January 1998
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2017-08-07Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
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