Resumen
This article focuses on the virtual reality systems. Cognitive studies show that intuitive formation of ideas is intertwined with visual, verbal, or physical representation as well as with reasoning in the natural process of shape conceptualizing. These facts inspired researchers to direct their research to the development of a new modeling technique for collaborative shape conceptualization. The shape conceptualization and representation technique we developed is referred to as, vague discrete modeling (VDM). The discreteness of a VDM comes from the discrete particles, its vagueness originates in the quantified metric occurrences of the particles. In order to make these fundamental concepts tangible, authors illustrate their approach with a simple design example. It reveals how VDM can be used for collaborative shape design in virtual environment. VDM is sufficiently natural and interactive, and efficiently supports collaborative shape design. It can be adapted to various virtual environments, and the models can be converted directly to conventional computer aided designing models.