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A Novel Haptics-Based Interface and Sculpting System for Physics-Based Geometric Design

Frank IX, Hong Qin, Arie E. Kaufman
INTERNATIONAL JOURNAL OF SHAPE MODELING, Volume 2 - 2001
Download the publication : 213ix01novel.pdf [330Ko]  

Abstract

Standard free-form splines such as B-splines and NURBS are widely employed in a wide range of CAD/CAM systems. Conventional geometric modeling and design techniques using these popular splines often requires tedious control-point manipulation and/or painstaking constraint specification (for functional requirements) via unnatural mouse-based computer interfaces. In this paper, we propose a novel and natural haptic interface and present a physics-based geometric modeling approach that supports the interactive sculpting of spline-based virtual material. Our desktop modeling system permits both expert and non-expert users to interactively deform virtual materials with real properties using force feedback. Using commercially available (and low-cost) haptic devices, modelers can feel the physically realistic presence of virtual spline objects such as B-splines throughout the design process. Our haptics-based B-spline is a special case of more powerful dynamic NURBS (D-NURBS) models. We develop various haptic sculpting tools to expedite the deformation of B-spline surfaces with haptic feedback and constraints. The most significant contribution of this paper is that point, normal, and curvature constraints can be specified interactively and modified naturally using forces. To achieve the real-time sculpting performance, we devise a novel dual representation for B-spline surfaces in both physical and mathematical space: the physics-based mass-spring model is mathematically constrained by the B-spline surface throughout the sculpting session.

Images and movies

213ix01novel.jpg [36Ko]
default.jpg [4Ko]
 

BibTex references

@Article {IQK01,
  author       = "IX, Frank and Qin, Hong and Kaufman, Arie E.",
  title        = "A Novel Haptics-Based Interface and Sculpting System for Physics-Based Geometric Design",
  journal      = "INTERNATIONAL JOURNAL OF SHAPE MODELING",
  volume       = "2",
  year         = "2001",
  url          = "http://cvc.cs.stonybrook.edu/Publications/2001/IQK01"
}

Other publications in the database

» Frank IX
» Hong Qin
» Arie E. Kaufman
 
Department of Computer Science • Stony Brook University, Stony Brook, NY 11794-4400 • 631-632-8470 or 631-632-8471

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