Rule-based constraint interaction in geometric models

Patent metadata

Field	Value
Publication number	US-2016117418-A1
Application number	US-201414890934-A
Country	US
Kind code	A1
Filing date	May 14, 2014
Priority date	May 22, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

Methods for constraining a geometric model and corresponding systems and computer-readable mediums. A method includes creating a rigid sketch group that includes some or all of the plurality of curves and receiving a user selection of first option rules or second option rules. The method includes editing the rigid sketch group according to the selected first option rules or second option rules. The method includes displaying the geometric model by the data processing system, including displaying the edited rigid sketch group.

First claim

What is claimed is:

1 . A method for constraining a geometric model, the method performed by a data processing system and comprising:
receiving, by the data processing system, a geometric model including a plurality of curves; creating a rigid sketch group, by the data processing system, that includes some or all of the plurality of curves; receiving, by the data processing system, a user selection of first option rules or second option rules; editing the rigid sketch group, by the data processing system, according to the selected first option rules or second option rules; and displaying the geometric model by the data processing system, including displaying the edited rigid sketch group.

2 . The method of claim 1 , wherein the first option rules indicate that the data processing system will preserve dimensions and constraints when possible and prevent new conflicts, external constraints or dimensions that conflict are not applied, external constraints or dimensions that do not conflict are preserved, hybrid constraints or dimensions are ignored, and internal constraints or dimensions are ignored.

3 . The method of claim 1 , wherein the second option rules indicate that the data processing system will preserve all dimensions and constraints, including when external dimensions and constraints conflict, hybrid constraints or dimensions are ignored, and internal constraints or dimensions are ignored.

4 . The method of claim 1 , wherein the curves included in the rigid sketch group are set to a rigid type.

5 . The method of claim 1 , wherein the data processing system constrains the rigid sketch group.

6 . The method of claim 1 , wherein the data processing system activates the rigid sketch group, including maintaining a location and orientation for the curves of the rigid sketch group.

7 . The method of claim 1 , wherein the geometric model is a two-dimensional model.

8 . A data processing system comprising:
a processor; and an accessible memory, the data processing system particularly configured to
receive a geometric model including a plurality of curves;
create a rigid sketch group that includes some or all of the plurality of curves;
receive a user selection of first option rules or second option rules;
edit the rigid sketch group according to the selected first option rules or second option rules; and
display the geometric model, including displaying the edited rigid sketch group.

9 . The data processing system of claim 8 , wherein the first option rules indicate that the data processing system will preserve dimensions and constraints when possible and prevent new conflicts, external constraints or dimensions that conflict are not applied, external constraints or dimensions that do not conflict are preserved, hybrid constraints or dimensions are ignored, and internal constraints or dimensions are ignored.

10 . The data processing system of claim 8 , wherein the second option rules indicate that the data processing system will preserve all dimensions and constraints, including when external dimensions and constraints conflict, hybrid constraints or dimensions are ignored, and internal constraints or dimensions are ignored.

11 . The data processing system of claim 8 , wherein the curves included in the rigid sketch group are set to a rigid type.

12 . The data processing system of claim 8 , wherein the data processing system constrains the rigid sketch group.

13 . The data processing system of claim 8 , wherein the data processing system activates the rigid sketch group, including maintaining a location and orientation for the curves of the rigid sketch group.

14 . The data processing system of claim 8 , wherein the geometric model is a two-dimensional model.

15 . A non-transitory computer-readable medium encoded with executable instructions that, when executed, cause one or more data processing systems to:
receive a geometric model including a plurality of curves; create a rigid sketch group that includes some or all of the plurality of curves; receive a user selection of first option rules or second option rules; edit the rigid sketch group according to the selected first option rules or second option rules; and display the geometric model, including displaying the edited rigid sketch group.

Assignees

• Siemens Product Lifecycle Man Software Inc

Inventors

• Baardse Dick
• Radhakrishnan Manoj
• Lomonosov Andrew
• Jankovich Steven Robert

Classifications

• G06F2111/04

  Constraint-based CAD · CPC title

• G06F17/50 Primary

  Physics · mapped topic

• G06F30/17 Primary

  Mechanical parametric or variational design · CPC title

• G06F30/00

  Computer-aided design [CAD] · CPC title