Desktop virtual reality interface for computer aided conceptual design using geometric techniques

This paper presents a virtual reality (VR)-based computer-aided design (CAD) system for conceptual design by applying VR interfaces and geometric modelling techniques to improve the human computer interaction. The research has studied the human factors for designing an intuitive computer-aided design system. The results and experiences have led to a deeper understanding of the limitation of current CAD tools that are used for conceptual design and the requirements for the VR-based CAD system so the design activities that define the user interfaces of VR-based CAD system can be determined. The system uses a CyberGlove, developed by Virtual Technology Inc., as an input device so that conceptual designers are allowed full freedom to use different kinds of gestures to conduct various geometric shape operations instead of depending solely on keyboard and two-dimensional mouse. The implemented shape modelling techniques offered by the system include destruction, construction, and novel techniques for freeform feature creation and modification. The system operates on the Windows NT platform and hence inherits a number of Windows operating styles. It provides a friendly human-computer interactive mechanism, especially for those users who are familiar with the Windows operating system. The VR-based user interfaces are superior and better match the human sensory capabilities than those that are dependent on conventional keyboard and mouse input devices.

[1]  Kw Chan,et al.  Multiple-points constraints based deformation for free-form surface , 1999 .

[2]  Carl Machover,et al.  Virtual reality , 1994, IEEE Computer Graphics and Applications.

[3]  Robert C. Zeleznik,et al.  The Lego interface toolkit , 1996, UIST '96.

[4]  Caroline Hummels,et al.  An Intuitive Two-Handed Gestural Interface for Computer Supported Product Design , 1997, Gesture Workshop.

[5]  Frederick P. Brooks,et al.  Research frontiers in virtual reality , 1994, SIGGRAPH.

[6]  Rangasami L. Kashyap,et al.  Virtual reality interfaces for feature-based computer-aided design systems , 1997, Comput. Aided Des..

[7]  Andrew S. Forsberg,et al.  Two pointer input for 3D interaction , 1997, SI3D.

[8]  Lee Markosian,et al.  Seamless Interaction in Virtual Reality , 1997, IEEE Computer Graphics and Applications.

[9]  Timothy S. Miller,et al.  The design of 3D haptic widgets , 1999, SI3D.

[10]  Jianming Zheng,et al.  VR interfaces for conceptual design using geometric modeling techniques , 2000 .

[11]  I. Gibson,et al.  A New Approach for Direct Manipulation of Free‐Form Curve , 1998, Comput. Graph. Forum.

[12]  Larry J. Leifer,et al.  DesignSpace: a manual interaction environment for computer aided design , 1994, CHI '94.

[13]  Joseph J. LaViola,et al.  ErgoDesk: A Framework for Two- and Three-Dimensional Interaction at the ActiveDesk , 1998 .

[14]  Mark Green,et al.  JDCAD: A highly interactive 3D modeling system , 1994, Comput. Graph..

[15]  Elaine Cohen,et al.  SKETCH-N-MAKE: AUTOMATED MACHINING OF CAD SKETCHES , 1998 .

[16]  David K. Kahaner.  Japanese activities in virtual reality , 1994, IEEE Computer Graphics and Applications.

[17]  C. A. McMahon,et al.  CADCAM: Principles, Practice and Manufacturing Management , 1999 .

[18]  Rajit Gadh,et al.  Creation of concept shape designs via a virtual reality interface , 1997, Comput. Aided Des..