ABSTRACT
Virtual reality (VR) and virtual environments (VE) subsume methods and technologies for a natural and potentially intuitive human-computer interaction (Burdea & Coiff et, 1994; Kalawsky, 1993; Ellis, 1995; Brooks, 1999). Th ey have become valuable tools for a broad spectrum of applications in diff erent domains. Th e spectrum ranges from visualization for product development and scientifi c data exploration to simulation-based education and training (Bullinger et al., 1997; Seidel & Chatelier, 1997; Alexander et al., 2004; Stanney, 2002).
