Dassault Systemes

Frederic Letzelter

Laura Peythieux

Amelie Renard

Mathieu Gunther

Christophe Dufau

Yani Sadoudi

Jean-Marc Chauvet

Mikael Queric

François Melocco

Jean Hong

The disclosure notably relates to a three-dimensional (3D) model. The data structure includes one delegated data object. The one delegate data object includes input parameters specific to a type of the delegated data object, and at least one operator specific to the type of the delegated data object for generating an output topology. The data structure also includes an output topology generated by the operator.

Flexible modeling using a weak type definition

The disclosure notably relates to a computer-implemented method for designing a three-dimensional (3D) model. The method includes obtaining a first 3D model, the first 3D model being defined by: (i) one delegated data object comprising input parameters specific to a type of the delegated data object and (ii) an output topology, and being associated with a sequence of geometric design operations. The method also includes performing, by a user, a first geometric design operation on the first 3D model, thereby obtaining a second 3D model, determining whether the output topology of the second 3D model can be retrieved from the output topology of the first 3D model, replacing the first delegated data object by a second delegated data object if the output topology of the second 3D model cannot be retrieved from the output topology of the first 3D model or keeping the first delegated data object and storing the first geometric design operation with the sequence of geometric design operations associated the first 3D model.

Modeling using a weak type definition

A computer-implemented method manipulates a 3D object in a 3D scene of a computer-aided design system, by: (i) displaying a 3D object having a center of rotation in the 3D scene on a screen; (ii) displaying in the 3D scene a rotation manipulator (RM) having three areas (RA, RA, RA) perpendicular to each other, and each area (RA, RA, RA) corresponding to a rotation plane, and (iii) activating the rotation manipulator. The rotation manipulator (RM) follows the cursor (C) on the screen. The rotation manipulator is activated by locking its location on the screen on an initial press point (PP). One rotation plane is selected by displacing the cursor (C) to the area (RA, RA, RA) corresponding to said plane. A rotation manipulation is performed according to the displacement of the cursor (C) on the screen.

Gesture-based manipulator for rotation

A computer-implemented method of setting a parameter. The method comprises detecting a user input on a first location on a graphical user interface, the user input being maintained. The method further comprises displaying on the graphical user interface a pie menu centered on the first location, the pie menu comprising at least one angular sector that is associated with a customizable parameter. The method also comprises detecting a second location of the user input on the graphical user interface in the at least angular sector, and selecting among a set of values, a value of the customizable parameter by displacing the user input from the second location to a third location.

Setting a parameter

Computer method and system draws a 3D object, by sketching at least one first stroke (ST) in a first plane (PL) rendered in a first viewing frustum corresponding to a first pose of a virtual camera. The first plane (PL) is orthogonal to a second (PL) and a third plane (PL). In response to a command of a user switching from the first pose to a second pose of the virtual camera, the method and system switches from the first viewing frustum to a second viewing frustum corresponding to the second pose of the virtual camera. The second viewing frustum is bounded by a near plane on the side of the virtual camera. Next a plane is selected as current drawing plane. The selected plane is among the first (PL), the second (PL) and the third plane (PL), whose normal is the closest to the normal of the near plane. At least one second stroke (ST) is then sketched in the current drawing plane.

Method for defining drawing planes for the design of a 3D object

A computer-implemented method of setting a parameter. The method comprises detecting a first user input on a first location on a graphical user interface, displaying on the graphical user interface a pie menu centered on the first location, the pie menu comprising at least one angular sector that is associated with a customizable parameter. The method also comprises detecting a second user input on a second location on the graphical user interface in the at least angular sector, the second user input being maintained. The method further comprises selecting among a set of values, a value of the customizable parameter by displacing the second user input from the second location to a third location.

A computer-implemented method of setting a parameter. The method comprises detecting a user input on a first location on a graphical user interface, the user input being maintained. The method also comprises displaying on the graphical user interface a pie menu centered on the first location, the pie menu comprising at least one angular sector that is associated with a customizable parameter, detecting a second location of the user input on the graphical user interface in the at least angular sector, and selecting among a set of values, a value of the customizable parameter according to the detected second location.

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.

Topological change in a constrained asymmetrical subdivision mesh

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.

Modification of a constrained asymmetrical subdivision mesh

The invention is directed to a computer-implemented method for partitioning an image. The method comprises displaying an image that comprises a border; drawing a curve over the image; computing all closed areas delimited by the curve and the border of the image, each closed area being independent from the other computed closed areas and individually selectable.

Partitioning an image

A computer-implemented method for configuring a tool with at least one pointing element on a screen comprising the steps of: pointing and activating (S) a tool with a pointing element, said tool comprising a list of customizable parameters; and without releasing the pointing element, providing (S) a first direction for selecting a customizable parameter of the list; providing (S) a second direction for customizing a selected parameter of the list; and defining (S) series of moves of the pointing element according to first and second direction for configuring the tool.

Computer-implemented method for configuring a tool with at least one pointing element on a screen

A computer-implemented method for designing a three-dimensional modeled object comprising the steps of providing a three-dimensional designing scene () in a display screen (); and providing a graphical tool () in a first area () with a reduced size in the display area () of the screen () comprising at least one image (). The graphical tool () is permanently superimposed over the scene ().

Computer-implemented method for designing a three-dimensional modeled object

A method and system for aiding a user of a graphical object editor in defining inputs for a selected command comprises presenting a navigation console on the display in response to a user selecting a particular command. The navigation console contains information which is contextually related to the selected command and, in particular, shows a sample object having sample features representative of the command inputs and additional features showing the command output using the sample input features. The console display has active regions associated with respective command inputs which cover one or both of a sample feature associated with the respective command input and an icon representative of the respective input. When a user selects an region in the navigation console associated with a particular command input, the command processor state machine is shifted to a state appropriate to receive a definition of a feature in the main object model for use as the particular command input. Similarly, in response to a user defining one input, the state of a navigation state machine can be shifted to highlight element in an active region for a next suitable input to select.

Growing community of inventors

Longjumeau, France

Frederic Letzelter