DocumentCode :
3197791
Title :
A hierarchically structured constraint-based data model for solid modelling in a virtual reality environment
Author :
Zhong, Yongmin ; Mueller-Wittig, Wolfgang ; Ma, Weiyin
Author_Institution :
Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore
fYear :
2002
fDate :
2002
Firstpage :
537
Lastpage :
544
Abstract :
A hierarchically structured constraint-based data model for solid modelling in a virtual reality environment is presented. The data model integrates a high-level constraint-based model for precise object definition, a mid-level CSG/Brep hybrid solid model for supporting hierarchical geometry abstractions and object creation, and a low-level polygon model for real-time visualization and interaction in the virtual reality environment. Constraints are embedded in the solid model and organized at different levels to reflect the entire solid modelling process from features and parts, to assemblies. This model not only provides precise object definition, but also supports real-time visualization and interaction in the VR environment. Furthermore, it has the potential to obtain precise 3D interactions and precise constraint-based manipulations can be deduced from the data model to carry out precise solid modelling in the VR environment.
Keywords :
CAD; data models; data visualisation; real-time systems; solid modelling; virtual reality; hierarchical geometry abstractions; hierarchically structured constraint-based data model; high-level constraint-based model; low-level polygon model; mid-level CSG/Brep hybrid solid model; object creation; object definition; precise 3D interactions; precise constraint-based manipulations; precise object definition; real-time interaction; real-time visualization; solid modelling; virtual reality environment; Assembly; Computer aided manufacturing; Data engineering; Data models; Data visualization; Design automation; Geometry; Pulp manufacturing; Solid modeling; Virtual reality;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Cyber Worlds, 2002. Proceedings. First International Symposium on
Print_ISBN :
0-7695-1862-1
Type :
conf
DOI :
10.1109/CW.2002.1180924
Filename :
1180924
Link To Document :
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