Pii: S0010-4485(00)00091-9
نویسندگان
چکیده
Applications of rational BeÂzier curves or surfaces often require the computation of derivatives. Even though there are several algorithms or representations for the derivatives of rational BeÂzier curves or surfaces, their advantages and disadvantages have not been explicitly discussed from the viewpoint of computational requirements. This paper presents the representation of the hodographs of rational BeÂzier curves and surfaces in rational BeÂzier curves and surfaces with appropriate degrees. In addition, this paper presents the evaluation of the performances of different representations. q 2001 Elsevier Science Ltd. All rights reserved.
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