Method and apparatus to vary control points of an outline font t

Details Method and apparatus to vary control points of an outline font t Method and apparatus to vary control points of an outline font t

1996-07-15

1998-02-03

Nguyen, Phu K.

G06F 1721

Patent

active

057154732

ABSTRACT:
A method and apparatus for providing a set of variations of control points of a symbol image, such as a glyph, for display of at least one variation of the symbol image on a display device of a computer controlled display system. The method includes providing a first plurality of control points specifying the outlines of the symbol image; providing variation data for specifying a set of variations for at least one of the control points, the variation data identifying the at least one control point and indicating a spatial manipulation of the at least one control point; modifying the first plurality of control points which specify the outline of the symbol image to spatially manipulate the at least one control point so as to provide a second plurality of control points; scan converting the second plurality of control points to provide a displayable representing of the symbol image; and displaying the displayable representation on the display device. The apparatus includes a storage device to store the first plurality of control points, a storage device to store the variation data and a processor for modifying the first plurality of control points according to the variation data; the apparatus further includes a scan conversion device to convert the second plurality of control points to a displayable representation of the symbol image.

REFERENCES:
patent: 5155805 (1992-10-01), Kaasila
patent: 5159668 (1992-10-01), Kaasila
patent: 5325479 (1994-06-01), Kaasila
James D. Foley et al., "Computer Graphics: Principles and Practice," T385. C587, 1990, pp. 12-14.
"WordPerfect for Windows" Reference, Version 5.1, 1991, pp. 157-159.
Adobe Systems Inc., "Multiple Master Fonts and the Adobe Type Manager(ATM) Software API for the Macintosh", (four pages).

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