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Computer-Aided Design
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ACM Transactions on Graphics (TOG)
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Hidden-line algorithm for curved surfaces
Computer-Aided Design
Automatic illustration of 3D geometric models: lines
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ACM Computing Surveys (CSUR)
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Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
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ACM Transactions on Graphics (TOG)
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This paper describes a hidden curve algorithm specifically designed for sculptured surfaces. A technique is described to extract the visible curves for a given scene without the need to approximate the surface by polygons. This algorithm produces higher quality results than polygon based algorithms, as most of the output set has an exact representation. Surface coherence is used to speed up the process. Although designed for sculptured surfaces, this algorithm is also suitable for polygonal data.