Enhancing conceptual CAD interface by haptic feedback and two-handed input

This paper proposed an approach to facilitate the conceptual geometric design process with haptic feedback and two-handed technologies. In the conceptual stage of design, the shape and dimension are not rigidly defined and therefore designers have great freedom and control over the model. However, conventional CAD systems do not satisfy the requirements of conceptual design due to lack of intuitiveness and similarity to traditional modelling methods. Haptic feedback can increase information flow between users and computer and improve reality and intuitiveness of simulation. Two-handed input provides user more degrees of freedom and the potential to incorporate users' learnt skill of traditional modelling into conceptual CAD system. The architecture of this CAD system, physical metaphor of traditional tools and two-handed task integration are discussed.