Assenmacher, IngoRaffin, BrunoMichitaka Hirose and Dieter Schmalstieg and Chadwick A. Wingrave and Kunihiro Nishimura2014-01-272014-01-272009978-3-905674-20-01727-530Xhttps://doi.org/10.2312/EGVE/JVRC09/105-108Interactions are a key part of Virtual Reality systems and can lead to complex software assembly for multi-modal and multi-site collaborative environments. This is even harder, when each participant is interacting in the same virtual world by very different hardware and software capabilities. This paper outlines a software architecture and interaction processing framework developed to couple different sites in a collaborative set-up using a data-flow oriented approach. We show how we transform the site-specific capabilities to a common interface. This is used for application state processing based on a distributed actor and property model.Categories and Subject Descriptors (according to ACM CCS): I.3.1 [Computer Graphics]: Hardware Architecture - Parallel processing I.3.4 [Computer Graphics]: Utilities - Software support I.3.7 [Computer Graphics]: Three- Dimensional Graphics and Realism - Virtual Reality