Název:	A new method for rasterization of parametric curves and its application to fast bezier patch shading
Autoři:	Chirikov, Sergey V. Paltashev, Timour T. Balabko, Pavel A.
Citace zdrojového dokumentu:	Journal of WSCG. 1997, vol. 5, no. 1-3.
Datum vydání:	1997
Nakladatel:	Václav Skala - UNION Agency
Typ dokumentu:	článek article
URI:	http://wscg.zcu.cz/wscg1997/wscg97.htm http://hdl.handle.net/11025/15933
ISSN:	1213-6972 (print) 1213-6980 (CD-ROM) 1213-6964 (online)
Klíčová slova:	křivka inkrementálního výkresu;Bresenhamův algoritmus;Béziérovy křivky;B-drážka;rastrová grafika;kuželový interpolator
Klíčová slova v dalším jazyce:	curve incremental drawing;Bresenham's algorithm;Bézier curves;B-spline;raster graphics;conic interpolator
Abstrakt v dalším jazyce:	This paper presents a unified rasterization method to render parametric curves and patches. The algorithms are extremely simple and fast. No multiplication and division are required. The proposed method combines strong sides of parametric and nonparametric representation of curves and patches. A class of curves named as L-curves is described in here. There is a simple correspondence between their parametric and nonparametric forms. It gives a possibility to divide patch rendering process into two tasks: presentation of a patch in L-form and rasterization of obtained L-curves. L-curves can represent both conic arc and Bezier curves and it is possible to use them for rasterization of B-splines and conic splines. Also L-curves can be used for interactive graphical design directly (font construction, for example). Hardware-oriented L-curve generation algorithms may be used for nonlinear color interpolation for Bezier patch shading. Final quality of this shading technique is comparable with the Phong shading method.
Práva:	© Václav Skala - UNION Agency
Vyskytuje se v kolekcích:	Volume 5, number 1-3 (1997)

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