Line smoothing techniques

Details Line smoothing techniques Line smoothing techniques

1996-08-29

1999-03-02

Saras, Steven J.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345133, G09G 536

Patent

active

058777431

ABSTRACT:
Improved curve plotting techniques are disclosed for drawing a substantially smooth curve in real time, from a plurality of sampled points, as the points are sampled, on a point-by-point basis. The curve is substantially smooth in that it has a continuously changing slope of G.sup.1 continuity, as opposed to a slope which changes in a discontinuous or stepwise manner. The curve plotting is performed by representing the x b.sub.y, c.sub.x, and c.sub.y comprise six unknown quantities, and t is a "dummy" valuable. The derivatives of the parametric equations are employed to calculate and to plot the smooth curve.

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Peter Karow, "Digital Typefaces", 1994, pp. 255-261.
Thomas Jr., George B. and Ross L. Finney, Elements of Calculus and Analytic Geometry, Addison-Wesley Pub. Co, 1981, pp. 88-93.

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