Tangible user interfaces for physically-based deformation: design principles and first prototype
We present design principles for conceiving tangible user interfaces for the interactive physically-based deformation of 3D models. Based on these design principles, we developed a first prototype using a passive tangible user interface that embodies the 3D model. By associating an arbitrary reference material with the user interface, we convert the displacements of the user interface into forces required by physically-based deformation models. These forces are then applied to the 3D model made out of any material via a physical deformation model. In this way, we compensate for the absence of direct haptic feedback, which allows us to use a force-driven physically-based deformation model. A user study on simple deformations of various metal beams shows that our prototype is usable for deformation with the user interface embodying the virtual beam. Our first results validate our design principles, plus they have a high educational value for mechanical engineering lectures.
KeywordsTangible interface Two-handed interaction Physically-based deformation ShapeTape
This work was supported by the ANR SeARCH project, Grant ANR-09-CORD-019 of the French National Research Agency (Agence Nationale de la Recherche). The authors would like to thank Térence Brochu for his support in the user study analysis.
- 4.Blanding, R., Turkiyyah, G.: ECAD—A prototype screen-based VR solid modeling environment incorporating tangible deformable models. Comput-Aided Des. Appl. 4(5), 595–605 (2007) Google Scholar
- 9.Koleva, B., Benford, S., Hui Ng, K., Rodden, T.: A framework for tangible user interfaces. In: Workshop Proc. on Real World User Interfaces, pp. 257–264 (2003) Google Scholar
- 10.Jackie Lee, C.-H., Hu, Y., Selker, T.: iSphere: a free-hand 3D modeling interface. Int. J. Arch. Comput. 4(1), 19–31 (2006) Google Scholar
- 12.Martin, S., Kaufmann, P., Botsch, M., Grinspun, E., Gross, M.: Unified simulation of elastic rods, shells, and solids. In: Proceedings of ACM SIGGRAPH 2010 (2010) Google Scholar
- 16.Sugiura, Y., Kakehi, G., Withana, A., Lee, C., Sakamoto, D., Sugimoto, M., Inami, M., Igarashi, T.: Detecting shape deformation of soft objects using directional photoreflectivity measurement. In: Proceedings of the 24th Annual ACM Symposium on User Interface Software and Technology, UIST’11, pp. 509–516. ACM, New York (2011) CrossRefGoogle Scholar
- 18.Young, W., Budynas, R.: Roark’s Formulas for Stress and Strain. McGraw-Hill’s International Editions. McGraw-Hill, New York (2002) Google Scholar