Extended free-form deformation: a sculpturing tool for 3D geometric modeling

Coquillart, Sabine

doi:10.1145/97879.97900

Cited by 385 publications

(232 citation statements)

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“…As the artist manipulates the control points of the lattice, the embedded surface is deformed. Several extensions have been developed to make a 3D lattice more controllable [7,16,20]. Implicit fields are also used as deformation fields of FFD [8], although the target object of this technique is limited to point-based surfaces.…”

Section: Related Workmentioning

confidence: 99%

WarpCurves: A tool for explicit manipulation of implicit surfaces

Sugihara

Wyvill

Schmidt

2010

Computers & Graphics

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We introduce WarpCurves, a technique for interactively manipulating an implicit surface using curve-based spatial deformations. Although implicit surfaces have several advantages in 3D modeling, current workflows are limited by the compositional nature of implicit modeling. Wide classes of surface features that are easy to create with the direct manipulation tools available for explicit surface representations are difficult to reproduce using volumetric implicit operations. We describe a novel spatial deformation that can be used to approximate direct surface manipulation. With our method an artist first draws a curve on the current surface to indicate the feature region-of-interest. Deformations applied to this handle curve are transferred to the implicit surface via an automatically-constructed C 2 continuous space mapping. Additional curves can be added in a hierarchical manner to create complex shapes. Our technique is implemented as a node in the BlobTree hierarchical implicit volume representation, and hence can be used along with other volumetric nodes (operators) such as blending and CSG. Our results show that surface deformations which would be difficult to reproduce using existing volumetric operations can be quickly constructed using warp curves, making them a valuable addition to the implicit modeling toolbox.

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Section: Related Workmentioning

confidence: 99%

WarpCurves: A tool for explicit manipulation of implicit surfaces

Sugihara

Wyvill

Schmidt

2010

Computers & Graphics

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“…They modify shapes implicitly by deforming 3D space in which objects are located [8][9][10]. However, it is difficult to manage geometric constraints defined on vertices, edges and faces, because FFD does not directly work on geometric shapes.…”

Section: Related Workmentioning

confidence: 99%

Interactive mesh deformation using equality-constrained least squares

Masuda

Yoshioka

Furukawa

2006

Computers & Graphics

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“…There have been many variant versions of FFD. Coquillart et al extended the FFD technique allowing composite lattices beside parallelepiped [7]. Similar techniques based on B-spline volumes or rational Bezier volumes were also proposed by other authors [8,9].…”

Section: Introductionmentioning

confidence: 96%