Visibility analysis is broadly used in milling and casting process planning and in coordinate measuring machine applications. However, standard visibility analysis (which involves determining visibility from a given viewpoint), cannot be applied directly to in-line cutting systems such as wire electrical discharge machines or hot wire foam cutters. The motivation of this paper is to accurately calculate the tangent visibility for objects represented by polygonal surfaces. In this paper we define a new type of visibility - tangent visibility. We develop an algorithm to calculate the global tangent visibility for in-line cutting systems, and several models are tested to verify its accuracy. Several polyhedral models are tested to verify the correctness of the tangent visibility algorithm; and the complexity of the algorithm is also discussed.
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e-mail: zxy119@psu.edu
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June 2011
Research Papers
Global Tangent Visibility Analysis for Polyhedral Computer Aided Design Models
Zhi Yang,
Zhi Yang
Department of Industrial and Manufacturing Engineering,
e-mail: zxy119@psu.edu
The Pennsylvania State University
, University Park, PA 16802
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Richard A. Wysk,
Richard A. Wysk
Department of Industrial and System Engineering,
North Carolina State University
, Raleigh, NC 27695
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Sanjay Joshi
Sanjay Joshi
Department of Industrial and Manufacturing Engineering,
The Pennsylvania State University
, University Park, PA 16802
Search for other works by this author on:
Zhi Yang
Department of Industrial and Manufacturing Engineering,
The Pennsylvania State University
, University Park, PA 16802
e-mail: zxy119@psu.edu
Richard A. Wysk
Department of Industrial and System Engineering,
North Carolina State University
, Raleigh, NC 27695
Sanjay Joshi
Department of Industrial and Manufacturing Engineering,
The Pennsylvania State University
, University Park, PA 16802
J. Manuf. Sci. Eng. Jun 2011, 133(3): 031012 (9 pages)
Published Online: June 10, 2011
Article history
Received:
October 6, 2010
Revised:
April 19, 2011
Online:
June 10, 2011
Published:
June 10, 2011
Citation
Yang, Z., Wysk, R. A., and Joshi, S. (June 10, 2011). "Global Tangent Visibility Analysis for Polyhedral Computer Aided Design Models." ASME. J. Manuf. Sci. Eng. June 2011; 133(3): 031012. https://doi.org/10.1115/1.4004141
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