Malomo L., Cignoni P., Scopigno R.
Computer Science Department, University of Pisa, Italy; CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy;
We present a friendly, efficient 3D interaction technique that, generalizing the well known trackball approach, unifies and blends the two common interaction mechanisms known as panning and orbiting. The approach allows to inspect a virtual object by navigating over its surrounding space, remaining at a chosen distance and performing a sort of automatic panning over its surface. This generalized trackball allows an intuitive navigation of topologically complex shapes, by enabling unexperienced users to visit hard-to-be-reached parts better and faster than with standard GUI components. The approach is based on the construction of multiple smooth approximations of the model under inspection and, at rendering time, it constrains the camera to stay at a given distance to these approximations. The approach is designed to require negligible preprocessing and memory overhead and works well for both mouse-based and touch interfaces. A user study confirms the impact of the proposed technique.
HCI, 3D, Navigation, Inspection
Cignoni Paolo, Malomo Luigi, Scopigno Roberto
ISTI – Istituto di scienza e tecnologie dell'informazione "Alessandro Faedo"
ID: 281728
Year: 2014
Type: Rapporto tecnico
Creation: 2014-07-03 14:01:21.000
Last update: 2021-01-04 14:52:27.000
CNR authors
External IDs
CNR OAI-PMH: oai:it.cnr:prodotti:281728