Immersive virtual environments (VEs) have potential in many application areas, but many
complex VE systems exhibit usability and interaction problems. This is partly due to a lack of
consideration or understanding of 3D interaction tasks and techniques. This paper proposes
the systematic study of the design, evaluation, and application of VE interaction techniques.
In this methodology, design and evaluation are based on a formal task analysis and
categorization of techniques, using multiple performance measures. As a direct …