Software components for haptic constraints
Identifieur interne : 007F59 ( Main/Exploration ); précédent : 007F58; suivant : 007F60Software components for haptic constraints
Auteurs : M. Hutchins [Australie]Source :
- SPIE proceedings series [ 1017-2653 ] ; 2000.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Réalité virtuelle.
English descriptors
- KwdEn :
Abstract
This paper discusses the software engineering of a class library for supporting haptic rendering of interaction constraints within a hand-immersive virtual environment. The design of interaction and navigation paradigms is a significant issue in the usability of virtual environments. The careful application of constraints in the interaction can help the user focus on their specific task. Interaction constraints can be usefully implemented using a haptic, or force-feedback, device. Haptic programming is difficult, so we are designing and implementing a class library to provide reusable components for programming haptic constraints. The library extends the Magma multi-sensory scenegraph API, providing a constrained proxy to serve as a new interaction point for the application, and an abstract constraint definition that can be realised by a variety of constraint types. The paper illustrates the constraint definition by describing a number of geometric constraints, and also describes techniques for combining and modifying constraints to create new ones. These techniques are used to construct constraints tailored to specific application requirements. The haptic constraints library is still a work in progress, and we have identified a number of areas where improvements can be made. One of the major challenges is to provide software components that can be reused to support a broad selection of different approaches to programming interaction in a haptically enabled virtual environment.
Affiliations:
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Le document en format XML
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