caa a22 4500 477132979 CHVBK 20180405111709.0 cr unu---uuuuu 170330e19970301xx s 000 0 eng 10.1007/s005300050048 doi (NATIONALLICENCE)springer-10.1007/s005300050048 THRED: a two-handed design system [Elektronische Daten] [Chris D. Shaw, Mark Green] Abstract.: This paper describes a computer-aided design system for sketching free-form polygonal surfaces such as terrains and other natural objects. The user manipulates two 3D position and orientation trackers with three buttons, one for each hand. Each hand has a distinct role to play, with the dominant hand being responsible for picking and manipulation, and the less dominant hand being responsible for context setting of various kinds. The less dominant hand holds the workpiece, sets which refinement level that can be picked by the dominant hand, sets the constraint mode and the reshape operator, and generally acts as a counterpoint to the dominant hand. In this paper, the architecture of the system is outlined, the interaction techniques are presented, and a simple surface is shown. Springer-Verlag Berlin Heidelberg, 1997 Key words:User interface software - Virtual reality - Interactive 3D graphics - Two-handed interfaces - Free-form surfaces - Geometric modeling nationallicence Shaw Chris D. Department of Computing Science, University of Alberta, Edmonton, Alberta T6G 2H1, Canada, CA aut Green Mark Department of Computing Science, University of Alberta, Edmonton, Alberta T6G 2H1, Canada, CA aut https://doi.org/10.1007/s005300050048 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005300050048 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shaw Chris D. Department of Computing Science, University of Alberta, Edmonton, Alberta T6G 2H1, Canada, CA aut NATIONALLICENCE 700 1- Green Mark Department of Computing Science, University of Alberta, Edmonton, Alberta T6G 2H1, Canada, CA aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer