公开(公告)号：US20170177771A1

公开(公告)日：2017-06-22

申请号：US15238227

申请日：2016-08-16

Applicant: Dassault Systemes

Inventor： Frederic Letzelter ,  Jean-Marc Chauvet ,  Christophe Dufau

IPC: G06F17/50

CPC classification number: G06F17/5018

Abstract: Embodiments provide methods and systems for modifying a finite element mesh representation of a three-dimensional model. A method according to an embodiment defines a symmetric constraint of a finite element mesh where the finite element mesh represents a subject 3D model and the symmetric constraint comprises two asymmetric zones of the finite element mesh to be modified symmetrically. Next, corresponding finite elements between the two asymmetric zones are identified and a topological manipulation to at least one of the identified corresponding finite elements is performed. In response, the topological manipulation is performed symmetrically on the identified finite element corresponding to the at least one finite element. In such an embodiment, performing the manipulation symmetrically results in the two asymmetric zones being modified symmetrically and represents a symmetrical topological modification in the subject 3D model.

公开(公告)号：US20170177770A1

公开(公告)日：2017-06-22

申请号：US15238066

申请日：2016-08-16

Applicant: Dassault Systemes

Inventor： Frederic Letzelter ,  Jean-Marc Chauvet ,  Christophe Dufau

IPC: G06F17/50

CPC classification number: G06F17/5018

Abstract: Embodiments provide methods and systems for modifying a finite element mesh representation of a three-dimensional model. A method according to an embodiment defines a symmetric constraint of a finite element mesh where the finite element mesh is a representation of a subject 3D model and the symmetric constraint comprises two asymmetric zones of the finite element mesh to be modified symmetrically. Next, corresponding finite elements between the two asymmetric zones are identified and a manipulation to at least one of the identified corresponding finite elements is performed. In response, the manipulation is performed symmetrically on a second or more of the identified corresponding finite elements where the second or more finite elements were identified as corresponding to the at least one finite element. In such an embodiment, performing the manipulation symmetrically results in the two asymmetric zones being modified symmetrically and represents a symmetrical modification in the subject 3D model.

公开(公告)号：US10311182B2

公开(公告)日：2019-06-04

申请号：US15238227

申请日：2016-08-16

Applicant: Dassault Systemes

Inventor： Frederic Letzelter ,  Jean-Marc Chauvet ,  Christophe Dufau

IPC: G06F17/50

Abstract: Embodiments provide methods and systems for modifying a finite element mesh representation of a three-dimensional model. A method according to an embodiment defines a symmetric constraint of a finite element mesh where the finite element mesh represents a subject 3D model and the symmetric constraint comprises two asymmetric zones of the finite element mesh to be modified symmetrically. Next, corresponding finite elements between the two asymmetric zones are identified and a topological manipulation to at least one of the identified corresponding finite elements is performed. In response, the topological manipulation is performed symmetrically on the identified finite element corresponding to the at least one finite element. In such an embodiment, performing the manipulation symmetrically results in the two asymmetric zones being modified symmetrically and represents a symmetrical topological modification in the subject 3D model.

公开(公告)号：US11941773B2

公开(公告)日：2024-03-26

申请号：US17377076

申请日：2021-07-15

Applicant: DASSAULT SYSTEMES

Inventor： Yani Sadoudi ,  Frédéric Letzelter ,  Christophe Dufau

IPC: G06T19/20 ,  G06F3/0346 ,  G06F30/10 ,  G06T17/20

CPC classification number: G06T19/20 ,  G06F3/0346 ,  G06F30/10 ,  G06T17/20 ,  G06T2200/24 ,  G06T2219/2016

Abstract: A computer-implemented method for designing a three-dimensional (3D) mesh in a 3D scene. The method comprises displaying a 3D mesh in a 3D scene and providing a global orientation and selecting, with a pointing device, one or more vertices of the 3D mesh, thereby forming a set of one or more vertices. The method comprises computing at least one picking zone that surrounds each vertex of the set. The method comprises providing a first manipulator for controlling a displacement of each vertex of the set along one or more NUV directions and determining whether the pointing device is maintained within the picking zone. If not, the method comprises providing a second manipulator for controlling a displacement of the one or more vertices of the set along one or more directions defined by the global orientation. The method improves user interactions for switching back and forth a first and second manipulators.

公开(公告)号：US10289771B2

公开(公告)日：2019-05-14

申请号：US15238066

申请日：2016-08-16

Applicant: Dassault Systemes

Inventor： Frederic Letzelter ,  Jean-Marc Chauvet ,  Christophe Dufau

IPC: G06F17/50

Abstract: Embodiments provide methods and systems for modifying a finite element mesh representation of a three-dimensional model. A method according to an embodiment defines a symmetric constraint of a finite element mesh where the finite element mesh is a representation of a subject 3D model and the symmetric constraint comprises two asymmetric zones of the finite element mesh to be modified symmetrically. Next, corresponding finite elements between the two asymmetric zones are identified and a manipulation to at least one of the identified corresponding finite elements is performed. In response, the manipulation is performed symmetrically on a second or more of the identified corresponding finite elements where the second or more finite elements were identified as corresponding to the at least one finite element. In such an embodiment, performing the manipulation symmetrically results in the two asymmetric zones being modified symmetrically and represents a symmetrical modification in the subject 3D model.