Anton A Tsypkin

20110102431, May 5, 2011

Jun 7, 2010

12/794923

Alex GAMBAROV - Sherborn MA, US
Stanislav BERDICHEVSKY - Wayland MA, US
Sergey GRISHECHKIN - Holliston MA, US
Dmitriy BOGAEVSKY - Acton MA, US
Vitali LIBERMAN - Chestnut Hill MA, US
Ivan SMYSHLYAYEV - Bellingham MA, US
Boris KRUK - Allston MA, US
Herman PONYRKO - Ashland MA, US
Anton TSYPKIN - Sharon MA, US

PARAMETRIC TECHNOLOGY CORPORATION - Needham MA

G06T 17/00

345420

The present invention provides a method, system, and instructions stored on a computer readable storage medium that resolve interference between surfaces in a modeling environment, such as a CAD environment. Further, exemplary embodiments of the present invention may modify the surfaces of a model to ensure that parts of the model constitute a solid body. In exemplary embodiments, when the manipulation of a first surface or set of surfaces causes interference with a second surface or set of surfaces, the topologies of the surfaces are modified to account for the interference. The individual surfaces involved in the intersection may be treated as a merged surface or set of surfaces having a single topology, surface area, and volume. If an ambiguity arises whereby more than one option exists for resolving the interference or providing a solid body, the modeling environment may provide multiple potential solutions to a user, and allow the user to select from among the solutions.

20120109589, May 3, 2012

Oct 28, 2010

12/913998

Brian Thompson - Lakeville MA, US
Anton Tsypkin - Ashland MA, US
Yihmin Chin - North Reading MA, US
Yacov Estrin - Rishon LeZion, IL
Paul Sagar - Medway MA, US

G06F 17/50

703 1

The present disclosure features methods and systems for direct-parametric interoperability in computer-aided design. Two approaches for developing three-dimensional designs are currently widely used: direct and parametric computer-aided design (CAD) modeling. To combine advantages of both approaches, in one aspect of the present invention, a direct modeling user interface is used for editing a model, allowing intuitive and easy manipulation of geometry, and a parametric geometry engine interprets these manipulations as history-based features to create a construction recipe. Thus, the underlying architecture of the model remains parametric, even though the user may not realize that history and associative relationships are being created and modified during every manipulation. Accordingly, the present invention provides the intuitive WYSIWYG editing of direct CAD modeling, while retaining the powerful features and regenerative capabilities of parametric modelers.

20120109591, May 3, 2012

Oct 28, 2010

12/914008

Brian Thompson - Lakeville MA, US
Anton Tsypkin - Ashland MA, US
Yihmin Chin - North Reading MA, US
Valery Burkatovskiy - Swampscott MA, US

G06F 17/50

703 1

The present disclosure features methods and systems for enforcing parametric constraints in a direct modeling interface in computer-aided design (CAD). A parametric geometry engine of a CAD application may compare an attempted edit to a feature in a direct modeling user interface of the CAD application to an existing constraint created in a parametric modeling user interface, and, in one embodiment, prevent the user from completing the edit. In other embodiments, the parametric geometry engine may present a dialog box to the user and allow them to reject the edit, override or delete the constraint, modify the constraint, or take other actions as appropriate. In still other embodiments, the parametric geometry engine may allow one user to edit the feature, but not another user. Thus, parametric constraints and permissions-based ownership of entities may be enforced in a direct modeling user interface.