Apparatus and method for generating font by means of metafont by using outline font

Patent metadata

Field	Value
Publication number	US-11036917-B2
Application number	US-201716305486-A
Country	US
Kind code	B2
Filing date	Mar 6, 2017
Priority date	Jan 26, 2017
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

An apparatus and method for generating font by means of METAFONT by using outline font are disclosed. The disclosed method for creating a Metafont font may be performed at an apparatus that includes a processor, where the method may include: (a) creating an intermediate code by adding an attribute for Metafont to a code of an outline font written in XML; and (b) creating the Metafont font by using information of points obtained by parsing the intermediate code.

First claim

What is claimed is:

1. A method for creating a Metafont font, the method performed at an apparatus including a processor, the method comprising:
(a) creating an intermediate code by adding an attribute for Metafont to a code of an outline font written in XML; and
(b) creating the Metafont font by using information of points obtained by parsing the intermediate code,
wherein the attribute for Metafont comprises a first attribute and a second attribute, the first attribute associated with designating two points from among the points for forming an outline as a pair, the second attribute associated with designating whether or not to fill an inner area of an outline,
wherein the attribute for Metafont further comprises at least one of a third attribute and a fourth attribute, the third attribute associated with changing a position coordinate of point B in a manner dependent on a position coordinate of point A, said point A having the position coordinate thereof configured beforehand, the fourth attribute associated with configuring a serif of a point,
wherein the outline font is a UFO (unified font object), and the attribute for Metafont is included in a ‘point’ tag in a code of the UFO.

2. The method for creating a Metafont font according to claim 1 , wherein the code of the outline font and the intermediate code are capable of representing a cubic curve composed of four points and a quadratic curve composed of three points, the Metafont code is capable of representing only the cubic curve,
and said step (b) comprises converting a quadratic curve in the intermediate code into a cubic curve in the Metafont code by using a series of equations shown below:
CP0=QP0
CP3=QP3
CP 1= QP 0+⅔( QP 1− QP 0)

CP 2= QP 2+⅔( QP 1− QP 2)

where CP0 and CP3 represent two reference points from among the four points, CP1 and CP2 represent two control points from among the four points, QP0 and QP2 represent two reference points from among the three points, and QP1 represents one control point from among the three points.

3. A non-transitory computer-readable recording medium storing a program of instructions for performing a method for creating a Metafont font, the method performed by an apparatus including a processor, wherein the method comprises:
(a) creating an intermediate code by adding an attribute for Metafont to a code of an outline font written in XML; and
(b) creating the Metafont font by using information of points obtained by parsing the intermediate code,
wherein the attribute for Metafont comprises a first attribute and a second attribute, the first attribute associated with designating two points from among the points for forming an outline as a pair, the second attribute associated with designating whether or not to fill an inner area of an outline,
wherein the attribute for Metafont further comprises at least one of a third attribute and a fourth attribute, the third attribute associated with changing a position coordinate of point B in a manner dependent on a position coordinate of point A, said point A having the position coordinate thereof configured beforehand, the fourth attribute associated with configuring a serif of a point,
wherein the outline font is a UFO (unified font object), and the attribute for Metafont is included in a ‘point’ tag in a code of the UFO.

4. An apparatus for creating a Metafont font, the apparatus comprising a processor, wherein the processor is configured to:
create an intermediate code by adding an attribute for Metafont to a code of an outline font written in XML; and
create the Metafont font by using information of points obtained by parsing the intermediate code,
wherein the attribute for Metafont comprises a first attribute and a second attribute, the first attribute associated with designating two points from among the points for forming an outline as a pair, the second attribute associated with designating whether or not to fill an inner area of an outline,
wherein the attribute for Metafont further comprises at least one of a third attribute and a fourth attribute, the third attribute associated with changing a position coordinate of point B in a manner dependent on a position coordinate of point A, said point A having the position coordinate thereof configured beforehand, the fourth attribute associated with configuring a serif of a point,
wherein the outline font is a UFO (unified font object), and the attribute for Metafont is included in a ‘point’ tag in a code of the UFO.

Assignees

• Foundation Soongsil Univ Industry Cooperation

Inventors

• Choi Jaeyoung
• Jeong Geunho

Classifications

• G06F40/166

  Editing, e.g. inserting or deleting · CPC title

• G06F40/14

  Tree-structured documents (parsing G06F40/205; validation G06F40/226) · CPC title

• G09G5/28

  for enhancement of character form, e.g. smoothing · CPC title

• G06F40/126

  Character encoding · CPC title

• G06F40/109 Primary

  Font handling; Temporal or kinetic typography · CPC title