{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T18:05:28Z","timestamp":1758823528157},"reference-count":20,"publisher":"ASME International","issue":"2","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2005,6,1]]},"abstract":"<jats:p>In this paper, an approach for shape tuning and predictable surface deformation is proposed. It pertains to the development of Fully Free Form Deformation Features (\u03b4\u2010F4) which have been proposed to avoid low-level manipulations of free form surfaces. In our approach, \u03b4\u2010F4 are applied through the specification of higher level parameters and constraints such as curves and points to be interpolated by the resulting surfaces. From the system perspective, the deformation is performed through the modification of the static equilibrium of bar networks coupled to the control polyhedra of the trimmed patches composing the free form surfaces on which the \u03b4\u2010F4 are defined. The equations system coming from the constraints specification is often underconstrained, the selection of one among the whole set of possible solutions requires the definition of an optimization problem where an objective function has to be minimized. In this paper we propose a formulation of this optimization problem where the objective function can be defined as a multiple combination of various local quantities related either to the geometry of the bar network (e.g., the length of a bar or the displacement of a node), or to its mechanical characteristics (e.g. the external force applied at a node or a bar deformation energy). Different types of combinations are also proposed and analyzed according to the induced shape behaviors. In this way the shape of a \u03b4\u2010F4 can be controlled globally, with a unique minimization, or locally with different minimizations applied to subdomains of the surface.<\/jats:p>","DOI":"10.1115\/1.1884146","type":"journal-article","created":{"date-parts":[[2005,6,6]],"date-time":"2005-06-06T18:15:20Z","timestamp":1118081720000},"page":"95-103","update-policy":"http:\/\/dx.doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":15,"title":["Shape Tuning in Fully Free-Form Deformation Features"],"prefix":"10.1115","volume":"5","author":[{"given":"J-P.","family":"Pernot","sequence":"first","affiliation":[{"name":"Laboratory 3S - Integrated Design Project, Domaine Universitaire, Grenoble, France Istituto di Matematical Applicata e Tecnologie, Informatiche - CNR, Via de Marini, Genova, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Guillet","sequence":"additional","affiliation":[{"name":"Laboratory 3S - Integrated Design Project Domaine Universitaire, Grenoble (France)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J-C.","family":"L\u00e9on","sequence":"additional","affiliation":[{"name":"Laboratory 3S - Integrated Design Project Domaine Universitaire, Grenoble (France)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B.","family":"Falcidieno","sequence":"additional","affiliation":[{"name":"Istituto di Matematica Applicata e Tecnologie Informatiche - CNR Via de Marini, Genova (Italy)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F.","family":"Giannini","sequence":"additional","affiliation":[{"name":"Istituto di Matematica Applicata e Tecnologie Informatiche - CNR Via de Marini, Genova (Italy)"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"33","published-online":{"date-parts":[[2005,2,4]]},"reference":[{"key":"2019100520103634700_c1","unstructured":"Pernot\n              J-P.\n            \n          , 2004, \u201cFully Free Form Deformation Features for Aesthetic and Engineering Designs,\u201d Ph.D. thesis, INP de Grenoble (France) and Universit\u00e0 di Genova (Italy)."},{"key":"2019100520103634700_c2","first-page":"65","article-title":"ArtDefo: Accurate Real Time Deformable Objects","volume-title":"Proceedings of the SIGGRAPH 99","author":"James"},{"key":"2019100520103634700_c3","doi-asserted-by":"crossref","first-page":"903","DOI":"10.1016\/S0010-4485(00)00115-9","article-title":"Modifying the Shape of NURBS Surfaces with Geometric Constraints","volume":"33","author":"Hu","journal-title":"Comput. Aided Geom. Des.","ISSN":"http:\/\/id.crossref.org\/issn\/0167-8396","issn-type":"print"},{"key":"2019100520103634700_c4","doi-asserted-by":"crossref","first-page":"583","DOI":"10.1016\/S0010-4485(01)00132-4","article-title":"Free-Form Design using Axial Curve-Pairs","volume":"34","author":"Hui","journal-title":"Comput.-Aided Des.","ISSN":"http:\/\/id.crossref.org\/issn\/0010-4485","issn-type":"print"},{"key":"2019100520103634700_c5","first-page":"297","article-title":"Sketch and Constraint-based Design of B-Splines Surfaces","volume-title":"Proceedings of the ACM Solid Modelling and Applications","author":"Michalik"},{"key":"2019100520103634700_c6","first-page":"219","article-title":"Extended Constrained Deformations: a New Sculpting Tool","volume-title":"Proceedings of the Shape Modelling International Conference","author":"Raffin"},{"key":"2019100520103634700_c7","first-page":"257","article-title":"Hierarchical D-NURBS Surfaces and their Physics-based Sculpting","volume-title":"Proceedings of the Shape Modelling International Conference","author":"Zhang"},{"key":"2019100520103634700_c8","first-page":"223","article-title":"Surface Feature Constraint Deformation for Free-Form Surface Interactive Design","volume-title":"Proceedings of the ACM Solid Modelling International Conference","author":"Zheng"},{"key":"2019100520103634700_c9","first-page":"267","article-title":"Automatic Knot Determination of NURBS for Interactive Geometric Design","volume-title":"Proceedings of the Shape Modelling International Conference","author":"Xie"},{"issue":"8","key":"2019100520103634700_c10","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1016\/S0010-4485(98)00019-0","article-title":"Parametrically Deformed Freeform Surface as Part of a Variational Model","volume":"30","author":"Guillet","journal-title":"Comput.-Aided Des.","ISSN":"http:\/\/id.crossref.org\/issn\/0010-4485","issn-type":"print"},{"issue":"1","key":"2019100520103634700_c11","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1109\/2945.489389","article-title":"D-NURBS: A Physic-Based Framework for Geometric Design","volume":"2","author":"Qin","journal-title":"IEEE Trans. Vis. Comput. Graph.","ISSN":"http:\/\/id.crossref.org\/issn\/1077-2626","issn-type":"print"},{"key":"2019100520103634700_c12","volume-title":"Parametric and Feature-Based CAD\u2215CAM","author":"Shah"},{"key":"2019100520103634700_c13","first-page":"56","article-title":"Specification of FreeForm Features","volume-title":"Proceedings of the ACM Solid Modelling and Applications","author":"Van den Berg"},{"key":"2019100520103634700_c14","first-page":"20","article-title":"Parameterization of FreeForm Features","volume-title":"Proceedings of the Shape Modelling International Conference","author":"Vergeest"},{"issue":"2","key":"2019100520103634700_c15","doi-asserted-by":"publisher","first-page":"273","DOI":"10.1076\/1382-5585(199912)06:04;1-B;FT273","article-title":"Free Form Features for Aesthetic Design","volume":"6","author":"Fontana","journal-title":"Int. J. Shape Model.","ISSN":"http:\/\/id.crossref.org\/issn\/0218-6543","issn-type":"print"},{"key":"2019100520103634700_c16","first-page":"109","article-title":"Inserting G1 Discontinuities into Free Form Features for Aesthetic Design","volume-title":"WSCG\u201904","author":"Cheutet"},{"key":"2019100520103634700_c17","first-page":"165","article-title":"A Shape Deformation Tool to Model Character Lines in the Early Design Phases","volume-title":"Proceedings of the Shape Modeling International Conference","author":"Pernot"},{"key":"2019100520103634700_c18","doi-asserted-by":"crossref","first-page":"395","DOI":"10.1016\/0167-8396(94)00022-K","article-title":"A New Approach towards Freeform Surfaces Control","volume":"12","author":"L\u00e9on","journal-title":"Comput. Aided Geom. Des.","ISSN":"http:\/\/id.crossref.org\/issn\/0167-8396","issn-type":"print"},{"key":"2019100520103634700_c19","doi-asserted-by":"crossref","DOI":"10.1115\/DETC2003\/DAC-48777","article-title":"A New Approach to Minimisations for Shape Control during Free-Form Surface Deformation","volume-title":"Proceedings of the ASME, DETC2003-DAC48777","author":"Pernot"},{"key":"2019100520103634700_c20","article-title":"Deformation Criteria for the Direct Manipulation of Free Form Surfaces","volume-title":"Curves & Surfaces","author":"Guillet"}],"container-title":["Journal of Computing and Information Science in Engineering"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/asmedigitalcollection.asme.org\/computingengineering\/article-pdf\/5\/2\/95\/5626372\/95_1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/asmedigitalcollection.asme.org\/computingengineering\/article-pdf\/5\/2\/95\/5626372\/95_1.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,10,5]],"date-time":"2019-10-05T20:10:45Z","timestamp":1570306245000},"score":1,"resource":{"primary":{"URL":"https:\/\/asmedigitalcollection.asme.org\/computingengineering\/article\/5\/2\/95\/465805\/Shape-Tuning-in-Fully-FreeForm-Deformation"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2005,2,4]]},"references-count":20,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2005,6,1]]}},"URL":"https:\/\/doi.org\/10.1115\/1.1884146","relation":{},"ISSN":["1530-9827","1944-7078"],"issn-type":[{"value":"1530-9827","type":"print"},{"value":"1944-7078","type":"electronic"}],"subject":[],"published":{"date-parts":[[2005,2,4]]}}}