Consistency Maintenance in Collaborative CAD Systems  

作　　者：LIU Huajun HE Fazhi ZHU Fuxi ZHU Qing 

机构地区：[1]School of Computer, Wuhan University, Wuhan 430072, China [2]State Kay Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan 430079, China

出　　处：《Chinese Journal of Electronics》2013年第1期15-20,共6页电子学报（英文版）

基　　金：This work is supported by the National Basic Research Program of China （973 Program） （No.2011CB302306）, and the National Natural Science Foundation of China （No.61070078, No.41171311, No.41021061）.

摘　　要：The difference between real-time CSCW systems and traditional distributed systems is that the for-mer one is supposed to provide a natural, free and fast interface for multi-user interaction. However, the typical multl-user interaction method applied in 3D CAD systems is strict consistency maintenance, such as locking mecha-nism and floor control,which may generate a stagnant and unnatural interface. This paper proposes a 3D semantic-based Operational transformation （OT） to support less constrained multi-user interaction and to achieve consis-tency in collaborative CAD editing （co-CAD） systems, and it can be used in many collaborative CAD/CAM indus-tries.

关 键 词：Multi-user interaction CSCW （Com-puter supported cooperative work） Operational transfor-mation 3D CAD Consistency maintenance. 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术] TP309.2[自动化与计算机技术—计算机科学与技术]