Cited topological object coding/naming method for online collaborative design

Abstract

The invention discloses a cited topological object coding / naming method for online collaborative design, which comprises: a step 1 of system configuration, in which the statuses of a plurality of participating terminals participating in online collaboration are equal; and a step 2, in which the plurality of participating terminals work collaboratively in a mode of exchanging characteristic designcommands and each participating terminal can serve as a command generating and transmitting end as well as a command receiving and executing end, wherein when a participating terminal serves as a command generating and transmitting end, a process adopted comprises locking a local shared database copy, generating characteristic design command, executing the characteristic design command, unlockingthe local shared database copy and sending the characteristic design command; and when the participating terminal serves as a command generating and transmitting end, a process adopted comprises receiving a characteristic design command, judging the locking state of the local database copy, and executing the characteristic design command immediately or awaiting to execute the characteristic design command. The method has the advantages of reasonable and strict design, simple and convenient operation, convenient implementation, good use effect, flexible coding and naming mode and support for CAD online collaborative design of characteristic design command concurrent granularity.

Description

technical field [0001] The invention relates to a method for encoding / naming referenced topology objects applicable to the field of computer-aided design, in particular to an encoding / naming method for referenced topology objects for online collaborative design that supports command-level concurrency granularity in feature design. Background technique [0002] CAD (Computer Aided Design) technology is a technology that uses computers to help designers in product and engineering design. CAD technology has been widely used in various fields of the national economy such as machinery, electronics, aviation, and construction, and has achieved great success. The development and application level of CAD technology has become one of the important symbols to measure the level of a country's scientific and technological modernization and industrial modernization. Collaborative design, as a new product design method in the era of information and networking, has attracted widespread at...

AI Technical Summary

Problems solved by technology

The first type of parametric model exchange and the second type of online visual annotation / circle reading have been commercially applied and achieved good results. The third type of online collaborative design is the highest goal pursued by current collaborative design. Research is also the most challenging, and there are still many problems to be solved

[0004] The goal of online collaborative design is to provide as fine a granularity of collaboration as possible, thereby improving the concurrency of the system. However, the existing online collaborative design methods generally have the problem of low concurrency. Take three common online collaborative design methods as examples: The first type of online collaborative design method adopts the strict mutual exclusion access method of shared data locking to control the concurrency in collaborative work, and only one participant is allowed to have the modification authority to the shared data at any time; the second type of online collaborative design method The design method assumes that the participants can consciously abide by the speech rules and use voice tools to assist the speech. In this way, it is decided which participant has the right to modify the shared data, but this assumption cannot always be met, so we have to carry out Post-event verification; the third type of online collaborative design method adopts a C / S (Client / Server) structure, in which the server configures shared data and geometric modeling services, and the client is mainly responsible for interactive input and model display of modeling operations. This type of collaborative design method cannot provide fine-grained parallel work because the geometric modeling services are all completed on the central server

Images