US 12,592,041 B2 · Mixed sheet extension

Abstract

A computer-implemented method of extending a mixed sheet within a B-rep model is described. The mixed sheet includes surfaces having different geometries, such as a mesh positioned between first and second classical geometry surfaces. A first guide curve is defined, located at the boundary of a first surface for a length corresponding to the desired mixed sheet extension adjacent the first surface. A second guide curve may also be defined, located at the boundary of a second surface for a length corresponding to the desired mixed sheet extension adjacent the second surface. At least one extension mesh rung is created by generating facets between the two external mesh vertices using first and second extension vectors, wherein the first extension vector has a pre-determined spatial relationship to the first guide curve. If included, the second extension vector has a pre-determined spatial relationship to the second guide curve.

Claims18

Dependent claims

A computer-implemented method of extending a mixed sheet comprising at least one mesh and one alternative geometry surface in a mixed-geometry model, wherein a mesh boundary to be extended comprises a row of n facets separated by n−1 interior vertices and located between two external mesh vertices, and wherein one or both of the external mesh vertices is adjacent to a surface having a different geometry to the mesh, the method comprising:

defining a first guide curve located at a boundary of a first surface for a length corresponding to a desired mixed sheet extension adjacent the first surface;
and
creating at least one extension mesh rung by generating facets between the two external mesh vertices using a first extension vector and a second extension vector, wherein the first extension vector has a pre-determined spatial relationship to the first guide curve.

A computer-implemented method of extending a mixed sheet comprising a mesh and one alternative geometry surface in a mixed-geometry model, wherein a mesh boundary to be extended comprises a row of n facets separated by n−1 interior vertices and located between two external mesh vertices, and wherein one or both of the external mesh vertices is adjacent to a surface having a different geometry to the mesh, the method comprising:

defining a first guide curve located at a boundary of a first surface for a length corresponding to a desired mixed sheet extension adjacent the first surface;
defining a second guide curve located at a boundary of a second surface for a length corresponding to a desired mixed sheet extension adjacent the second surface;
and
creating at least one extension mesh rung by generating facets between the two external mesh vertices using a first extension vector and a second extension vector,
wherein the first extension vector has a pre-determined spatial relationship to the first guide curve, and
wherein the second extension vector has a pre-determined spatial relationship to the second guide curve.

3 more elements

Dependencies are inferred from the claim text.

Mixed sheet extension

Life of this patent

Mixed sheet extension

Life of this patent

Abstract

Claims18