Paul Lubos, Gerd Bruder, Frank Steinicke
The potential benefits of direct and natural interaction offered by immersive virtual environments (IVEs) encourage the research in the 3D user interfaces (3DUIs) field to create efficient selection methods. Utilizing a Fitts' Law experiment, we analyzed the 3D direct selection of objects in virtual 3D space. We divided the direct, frontal interaction space into nine interaction regions and compared different levels of selection difficulty. Our results indicate that the selection errors are highest along the view axis, less along the motion axis and marginal along the orthogonal plane and provide interesting alternatives for the design of direct selection techniques.
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