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Front. Inform. Technol. Electron. Eng.  2012, Vol. 13 Issue (1): 20-28    DOI: 10.1631/jzus.C11a0077
    
A generic approach of integrating 3D models into virtual manufacturing
Hwa-Jen Yap, Zahari Taha, Siti Zawiah Md Dawal
Department of Engineering Design and Manufacture, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia, Centre for Product Design and Manufacturing, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia, Faculty of Manufacturing Engineering & Technology Management, Universiti Malaysia Pahang, Kuantan26300, Malaysia
A generic approach of integrating 3D models into virtual manufacturing
Hwa-Jen Yap, Zahari Taha, Siti Zawiah Md Dawal
Department of Engineering Design and Manufacture, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia, Centre for Product Design and Manufacturing, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia, Faculty of Manufacturing Engineering & Technology Management, Universiti Malaysia Pahang, Kuantan26300, Malaysia
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摘要： Various 3D modeling software has been developed for design and manufacturing. Most of the commercially available software uses native file formats, which may not be able to be read or understood by other software. This paper deals with the development of a generic approach of a 3D model conversion program for virtual manufacturing (VM), using a lexical analyzer generator Lex and the Open Graphic Library (OpenGL). The program is able to convert 3D mesh data between four universal file formats, i.e., Stereolithography (STL), Virtual Reality Modeling Language (VRML), eXtensible Markup Language (XML), and Object (OBJ). Simple assembly functions can be applied to the imported models. The quaternion angle is used for object rotation to overcome the problem of gimbal lock or a loss of one degree of rotational freedom. The program has been validated by importing the neutral format models into the program, applying the transformation, saving the new models with a new coordinate system, and lastly exporting into other commercial software. The results showed that the program is able to render and re-arrange accurately the geometry data from the different universal file formats and that it can be used in VM. Therefore, the output models from a VM system can be transferred or imported to another VM system in a universal file format.
关键词： Virtual manufacturing;  Lex;  OpenGL;  Three-dimensional mesh data;  Quaternion;  Neutral format    
Abstract: Various 3D modeling software has been developed for design and manufacturing. Most of the commercially available software uses native file formats, which may not be able to be read or understood by other software. This paper deals with the development of a generic approach of a 3D model conversion program for virtual manufacturing (VM), using a lexical analyzer generator Lex and the Open Graphic Library (OpenGL). The program is able to convert 3D mesh data between four universal file formats, i.e., Stereolithography (STL), Virtual Reality Modeling Language (VRML), eXtensible Markup Language (XML), and Object (OBJ). Simple assembly functions can be applied to the imported models. The quaternion angle is used for object rotation to overcome the problem of gimbal lock or a loss of one degree of rotational freedom. The program has been validated by importing the neutral format models into the program, applying the transformation, saving the new models with a new coordinate system, and lastly exporting into other commercial software. The results showed that the program is able to render and re-arrange accurately the geometry data from the different universal file formats and that it can be used in VM. Therefore, the output models from a VM system can be transferred or imported to another VM system in a universal file format.
Key words: Virtual manufacturing    Lex    OpenGL    Three-dimensional mesh data    Quaternion    Neutral format
收稿日期: 2011-03-24 出版日期: 2011-12-29
CLC:  TP391.9  
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Hwa-Jen Yap
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Hwa-Jen Yap, Zahari Taha, Siti Zawiah Md Dawal. A generic approach of integrating 3D models into virtual manufacturing. Front. Inform. Technol. Electron. Eng., 2012, 13(1): 20-28.

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http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C11a0077    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2012/V13/I1/20

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