Manipulation of CAD surface models with haptics based on shape control functions

Liu, Xueqin; Dodds, G.; McCartney, J.; Hinds, B. K.

doi:10.1016/j.cad.2005.02.015

Cited by 24 publications

(15 citation statements)

References 7 publications

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“…Compared with the previous work of using haptics for designing B-Spline [9], which adopted a totally different method, i.e., geometrically-based manipulation, the haptic-based operations discussed in this paper can obviously generate more plausible curves/surfaces, and handle more complex B-Spline models. The method discussed in this paper produces fair or plausible B-Spline surfaces that are analogous to a physical model: as shown in Fig.…”

Section: Hapticsmentioning

confidence: 90%

“…In Eqn. (9), like the surface energy items, the control points of the B-Spline surface are the unknown variables needed to be optimized, and all other parameters, e.g., the knot vectors and Parameter (u, v), are given or fixed. Since the constraint energy is directly added into the B-Spline surface energy Eqn.…”

Section: Energy-based Constraints E Cons In Eqn (3) Can Be Expressed Asmentioning

confidence: 99%

“…In the design related fields, haptic technique has been primarily used in three major categories: virtual assembly simulations [11], the creation of polygon/voxel-based models [4,17], B-Spline based manipulation [5,8,9]. In our opinion, directly manipulating/designing B-Spline surfaces is needed when using haptics to design surfaces in CAD because: (1) B-Spline is the standard representation for curves/surfaces in CAD; (2) as stated in [5,8], changes made to other representations, e.g., a polygon/voxelbased representation, are very difficult, if not impossible, to be converted back into a B-Rep model in a CAD system.…”

Section: Hapticsmentioning

confidence: 99%

See 2 more Smart Citations

Designing B-Spline Surfaces with Haptics Based on Variational Technique

Liu¹

2014

Computer-Aided Design and Applications

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Due to their 3D nature, many CAD B-Spline surfaces are difficult to design and edit with traditional 2D interfaces, e.g., a 2D mouse. Based on an energy minimization method or variational B-Spline technique, the paper presents the technique of using a haptic device to design B-Spline surfaces. Under complex constraints and without any pre-calculation, the variational B-Spline technique used in the system can solve virtually all practical B-Spline surfaces in a matter of milliseconds. Such results are much more efficient and powerful than previous work in the variational B-Spline field. By using a haptic interface, the system allows a user in a natural 3D environment to directly manipulate/design constraints, e.g., points and curves, and in real time, the system generates energy-minimization B-Spline surfaces in response to haptic operations. The discussed technique delivers all the performance and capacity required for using haptics to design high-quality B-Spline surfaces, and haptic-based surface operations provide a powerful method for designing B-Spline surfaces.

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Section: Hapticsmentioning

confidence: 90%

Section: Energy-based Constraints E Cons In Eqn (3) Can Be Expressed Asmentioning

confidence: 99%

Section: Hapticsmentioning

confidence: 99%

See 1 more Smart Citation

Designing B-Spline Surfaces with Haptics Based on Variational Technique

Liu¹

2014

Computer-Aided Design and Applications

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“…For basic operations easily expressed by regular shape/feature operations, traditional interface is suitable and sufficient. Studies 48 have shown that as for freeform based surface operations, haptics does provide a powerful way for designing and manipulating complex surfaces. With traditional two-dimensional interfaces, interactively designing an object is often an inefficient and tedious process.…”

Section: Discussionmentioning

confidence: 99%

Haptic‐constraint modeling based on interactive metaballs

Chen

Jin²

2010

Computer Animation & Virtual

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Adding interactive haptic-constraint sensations is important in interactive computer gaming and 3D shape design. Usually constraints are set on vertices of the object to drive the deformation. How to simulate dynamic force constraints in interactive design is still a challenging task. In this paper, we propose a novel haptic-constraint modeling method based on interactive metaballs, during which the haptic-constraint tools are attracted to the target location and then control the touch-enabled deformation within the constrained areas. The interactive force feedbacks facilitate designers to accurately deform the target regions and fine carve the details as their intention on the objects. Our work studies how to apply touch sensation in such constrained deformations using interactive metaballs, thus users can truly feel and control the soft-touch objects during the deforming interactions. Experimental results show that the dynamic sense of touch during the haptic manipulation is intuitively simulated to users, via the interacting interface we have developed.

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“…For aesthetic design, Snibbe et al ( 1998 ) and Gregory et al ( 2000 ) provided the force feedback to drawing and painting activities in 3D space. Dachille IX et al ( 1999 ) and Liu et al ( 2004 , 2005 ) presented surface deformation with pulling/pushing interaction using force feedback devices. For solid modeling, Picon et al ( 2008 ) applied the force feedback to extrusion task to increase the 3D gesture accuracy.…”

Section: Related Workmentioning

confidence: 99%

ShapeGuide: Shape-Based 3D Interaction for Parameter Modification of Native CAD Data

et al. 2018

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While Virtual Reality (VR) technologies are commonly used in industrial companies, loading and modifying CAD parts of commercial CAD systems in virtual environments are still challenging. A few VR applications for Computer Aided Design (CAD) enable users to modify native CAD data in an immersive environment. Even if such VR-CAD applications use 3D interaction space, interaction with parameter values of CAD parts could be enhanced. This paper presents ShapeGuide, a technique allowing users to modify native CAD parts using a shape-based 3D interaction technique. With ShapeGuide, users can achieve modification of parameter values by directly pushing or pulling the surface of a CAD object. In addition, force feedback can be integrated into the technique to enhance the precision of the users' hand motions in the 3D space. In a controlled experiment, we compared ShapeGuide to a standard one-dimensional scroll technique to measure its added value for parametric CAD data modification on a simple industrial product example with an adjusted modification capability. We also evaluated the effect of force feedback assistance on both techniques. Results of this experiment demonstrate that ShapeGuide is significantly faster and more efficient than the scroll technique. Furthermore, they show that the force feedback assistance enhances the precision of both techniques, especially of ShapeGuide.

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Manipulation of CAD surface models with haptics based on shape control functions

Cited by 24 publications

References 7 publications

Designing B-Spline Surfaces with Haptics Based on Variational Technique

Designing B-Spline Surfaces with Haptics Based on Variational Technique

Haptic‐constraint modeling based on interactive metaballs

ShapeGuide: Shape-Based 3D Interaction for Parameter Modification of Native CAD Data

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