Elaine E Cohen

US Patent:

20190303530, Oct 3, 2019

Filed:

May 22, 2019

Appl. No.:

16/419692

Inventors:

- Austin TX, US
- Salt Lake City UT, US
Richard H. Crawford - Austin TX, US
Elaine Cohen - Salt Lake City UT, US
Richard F. Riesenfeld - Salt Lake City UT, US

International Classification:

G06F 17/50
G06T 17/30
G06T 19/20
G06F 17/17

Abstract:

A mechanism is disclosed for reconstructing trimmed surfaces whose underlying spline surfaces intersect in model space, so that the reconstructed version of each original trimmed surface is geometrically close to the original trimmed surface, and so that the boundary of each respective reconstructed version includes a model space trim curve that approximates the geometric intersection of the underlying spline surfaces. Thus, the reconstructed versions will meet in a continuous fashion along the model space curve. The mechanism may operate on already trimmed surfaces such as may be available in a boundary representation object model, or, on spline surfaces that are to be trimmed, e.g., as part of a Boolean operation in a computer-aided design system. The ability to create objects with surface-surface intersections that are free of gaps liberates a whole host of downstream industries to perform their respective applications without the burdensome labor of gap repair, and thus, multiplies the efficacy of those industries.

US Patent:

20190303531, Oct 3, 2019

Filed:

May 22, 2019

Appl. No.:

16/419695

Inventors:

- Austin TX, US
- Salt Lake City UT, US
Richard H. Crawford - Austin TX, US
Elaine Cohen - Salt Lake City UT, US
Richard F. Riesenfeld - Salt Lake City UT, US

International Classification:

G06F 17/50
G06T 17/30
G06T 19/20
G06F 17/17

Abstract:

A mechanism is disclosed for reconstructing trimmed surfaces whose underlying spline surfaces intersect in model space, so that the reconstructed version of each original trimmed surface is geometrically close to the original trimmed surface, and so that the boundary of each respective reconstructed version includes a model space trim curve that approximates the geometric intersection of the underlying spline surfaces. Thus, the reconstructed versions will meet in a continuous fashion along the model space curve. The mechanism may operate on already trimmed surfaces such as may be available in a boundary representation object model, or, on spline surfaces that are to be trimmed, e.g., as part of a Boolean operation in a computer-aided design system. The ability to create objects with surface-surface intersections that are free of gaps liberates a whole host of downstream industries to perform their respective applications without the burdensome labor of gap repair, and thus, multiplies the efficacy of those industries.

US Patent:

20190303532, Oct 3, 2019

Filed:

May 22, 2019

Appl. No.:

16/419698

Inventors:

- Austin TX, US
- Salt Lake City UT, US
Richard H. Crawford - Austin TX, US
Elaine Cohen - Salt Lake City UT, US
Richard F. Riesenfeld - Salt Lake City UT, US

International Classification:

G06F 17/50
G06T 17/30
G06T 19/20
G06F 17/17

Abstract:

A mechanism is disclosed for reconstructing trimmed surfaces whose underlying spline surfaces intersect in model space, so that the reconstructed version of each original trimmed surface is geometrically close to the original trimmed surface, and so that the boundary of each respective reconstructed version includes a model space trim curve that approximates the geometric intersection of the underlying spline surfaces. Thus, the reconstructed versions will meet in a continuous fashion along the model space curve. The mechanism may operate on already trimmed surfaces such as may be available in a boundary representation object model, or, on spline surfaces that are to be trimmed, e.g., as part of a Boolean operation in a computer-aided design system. The ability to create objects with surface-surface intersections that are free of gaps liberates a whole host of downstream industries to perform their respective applications without the burdensome labor of gap repair, and thus, multiplies the efficacy of those industries.

US Patent:

20180365371, Dec 20, 2018

Filed:

Feb 15, 2017

Appl. No.:

15/433823

Inventors:

- Austin TX, US
- Salt Lake City UT, US
Richard H. Crawford - Austin TX, US
Elaine Cohen - Salt Lake City UT, US
Richard F. Riesenfeld - Salt Lake City UT, US

International Classification:

G06F 17/50
G06T 19/20

Abstract:

A mechanism is disclosed for reconstructing trimmed surfaces whose underlying spline surfaces intersect in model space, so that the reconstructed version of each original trimmed surface is geometrically close to the original trimmed surface, and so that the boundary of each respective reconstructed version includes a model space trim curve that approximates the geometric intersection of the underlying spline surfaces. Thus, the reconstructed versions will meet in a continuous fashion along the model space curve. The mechanism may operate on already trimmed surfaces such as may be available in a boundary representation object model, or, on spline surfaces that are to be trimmed, e.g., as part of a Boolean operation in a computer-aided design system. The ability to create objects with surface-surface intersections that are free of gaps liberates a whole host of downstream industries to perform their respective applications without the burdensome labor of gap repair, and thus, multiplies the efficacy of those industries.