JPH1055163A - Font generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce an outline data which offers an outline width requiring little amount of correction when preparing an outline font different in outline width from an outline font having been prepared by relatively changing the outline width with respect to the central point of the outline. SOLUTION: An outline plot processing section 6 plots the outline of a font based on the data of an ante-conversion outline font file 2 to store in a plot data latching section 9. Next, an outline vector processing section 7 figures out the normal vector of the outline from the data of the file 2 and collates it with the outline plotted by the outline plot processing section 6 to calculate the central coordinates of the outline. Based on the calculated normal vector, the central coordinates and the data of a conversion controlling parameter file 3, an outline conversion processing section 8 converts the outline width of the font file 2 to store into a post-conversion outline font file 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a font generating apparatus for creating an outline font (family font) having a different outline width (weight) from an already created outline font.

[0002] In recent years, outline fonts have been rapidly installed in personal computers, word processors, and the like, and the methods of using fonts in these devices have been diversified. For this reason, many types of outline fonts are required to be mounted on the personal computer or word processor. In particular, mounting of family fonts having different outline widths (weights) is strongly demanded. For this reason, it is necessary to create the family font, in particular, a family font that can efficiently perform the manual correction of the front end portion.

[0003]

2. Description of the Related Art FIG. 11 is a view for explaining a conventional font generating apparatus. FIG. 11A shows an example of the configuration of a font generating apparatus, and FIG. 11B shows an example of an outline. ing.
In FIG. 11A, reference numeral 1 denotes an auxiliary storage unit which stores an outline font file 2 before conversion storing outline font data to be converted and an outline font file 4 after conversion which stores outline font data after conversion processing. Remember. 5 is an outline processing unit which draws a font outline from the data of the outline font file 2 before conversion.
6 and an outline vector processing unit 7 for converting the outline drawn by the outline drawing processing unit 6.

In the conventional font generation apparatus, when performing conversion of an outline font, the outline drawing processing unit 6 executes the conversion of the outline font file 2 before conversion.
, The outline data is sequentially read from the outline data, the outline drawing processing is performed, and the next outline vector processing unit 7 moves the coordinate values of the drawn outline as a conversion source to outside the outline or inside the outline by a constant value. By doing so, a new outline was generated and stored in the outline font file 4 after conversion.

[0005]

Therefore, in the conventional font generating apparatus, the coordinates of the contour are moved at a constant value regardless of the width of the contour, and therefore, as shown in FIG. For contours where the contour width changes, the balance of the design becomes worse or the length of the contour becomes shorter, and the contour data generated by moving the coordinates at the constant value is manually corrected. There is a problem that it takes a lot of time to do so.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides a font generating apparatus for creating an outline font (family font) having a different outline width (weight) from an already created outline font, based on the center point of the outline. An object of the present invention is to provide a font generating apparatus capable of generating outline data (family typeface) different from an outline width with a small amount of correction by relatively changing the outline width.

[0007]

FIG. 1 is a block diagram showing the principle of the present invention. The above problem is solved by a font generation device configured as follows.

(1) An outline drawing means 6 for drawing an outline of an outline font composed of a coordinate point and an outline point Pn represented by a coordinate point attribute, and a contour line from the outline coordinate point of the outline font toward the center of the outline. Intersection coordinate calculation means 70, 71 for calculating the normal vector H, and intersection coordinate calculation means 72 for calculating the coordinate point of the intersection Qn between the opposite contours intersecting with the calculated normal vector H 72
And the coordinate point at which the normal vector H was generated and the coordinate point of the opposite contour intersecting the normal vector H (intersection point Qn)
Of the middle point (sometimes called the middle point) Sn with
A midpoint coordinate calculating means 73 for obtaining a center line of the contour line facing the contour line, and a conversion control parameter file 3 for storing a conversion rate Nθ corresponding to a normal angle θn of each of the contour coordinate points, Referring to the conversion control parameter file 3, the distance dn between the coordinates of the midpoint Sn on the normal vector H and the coordinate points of the contour (contour point Pn) is calculated as
The coordinates of the midpoint Sn and the coordinates of the contour (contour point P
n) The contour width of the outline font is changed by increasing or decreasing at a constant relative ratio Nθ according to the normal angle θn of n).

(2) The font generating apparatus according to the above (1), wherein the constant relative ratio is increased or decreased at a constant ratio to change the outline width of the outline font.

(3) A computer-readable recording medium on which a program operated by a computer is recorded, wherein contour drawing is performed for drawing a contour of an outline font composed of a coordinate point and a contour point Pn represented by a coordinate point attribute. Step 6, a normal vector calculation step 70, 71 for calculating a normal vector H from the outline coordinate point of the outline font toward the center of the outline, and an opposing outline intersecting the calculated normal vector H Intersection coordinate calculating means 72 for calculating the coordinate point of the intersection Qn of the above, and an intermediate point between the coordinate point at which the normal vector H is generated and the coordinate point (intersection Qn) of the opposite contour intersecting the normal vector H S
n, calculating the center line between the contour line and the opposite contour line, and using the conversion rate Nθ corresponding to the normal angle θ of each contour coordinate point. The distance dn between the coordinates of Sn and the coordinate point of the contour line (contour point Pn) is determined by a constant relative ratio N according to the coordinates of the middle point Sn and the normal angle θ between the coordinate point of the contour line (contour point Pn).
and the procedure of changing the outline width of the outline font by increasing or decreasing by θ.

FIG. 1 is a block diagram showing the principle of a font generating apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes an auxiliary storage unit,
A pre-conversion outline font file 2 storing outline font data to be converted, a conversion control parameter file 3 storing conversion processing control parameter data, and a post-conversion outline font file 4 storing outline font data after conversion processing. Is stored.

Reference numeral 5 denotes an outline processing unit which includes an outline drawing processing unit (contour drawing unit) 6 for drawing a font outline from the data of the outline font file 2 before conversion, and data (points) of the outline font file 2 before conversion. Data), an outline vector processing unit 7 that calculates the outline normal vector, checks (overlaps) the outline drawn by the outline drawing processing unit 6 and calculates the center coordinates of the outline, Based on the normal vector, center coordinates, and data (conversion rate) in conversion control parameter file 3 calculated in Part 7, outline font file 2 before conversion is used.
And an outline conversion processing unit 8 for converting the outline width of the outline font and storing the converted outline width in the outline font file 4.

Reference numeral 9 denotes a drawing data holding unit for temporarily storing data drawn by the outline drawing processing unit 6, and reference numeral 10 denotes a center coordinate and a normal vector of the contour calculated by the outline vector processing unit 7. It is a midpoint data holding unit for temporarily storing.

In the font generating apparatus having the above-described configuration, when performing the conversion of the outline font, first, the outline drawing processing unit 6 first executes the outline font file before conversion.
The outline data is sequentially read out from 2, contour drawing processing is performed, and the drawing data is stored in the drawing data holding unit 9.

Next, an outline vector processing unit 7 sequentially reads out outline data from the outline font file 2 before conversion, calculates a normal angle θn of the contour,
The normal vector H of the calculated normal angle θn is compared (overlaid) with the drawing data held in the drawing data holding unit 9, and the coordinates of the intersection between the normal vector and the facing contour line are determined. , Calculate the coordinates of the center point of the contour.

The calculated center point coordinates and normal angle θ
n is stored in the midpoint data holding unit 10. The outline conversion processing section 8 sequentially stores the above-mentioned midpoint data holding section 10
The coordinates of the center point and the normal angle θn are read out, the coordinates of each point of the outline are read out from the outline font file 2 before conversion, and the distance dn between the center point (middle point) of the outline and the outline is calculated. The pre-conversion font data is converted based on the instruction content (conversion rate) of the conversion control parameter file 3 and stored in the outline font file 4 after the conversion.

As described above, the font generating apparatus of the present invention generates outline fonts having different outline widths by generating the coordinates of the center point of the outline of the font, the distance between each point on the outline, and the normal line on each point. Since the relative change is made based on the angle, the outline data (family typeface) with a narrower contour width can be generated toward the leading end, and the amount of the leading end correction manually afterward can be reduced. It greatly reduces the productivity of the family typeface.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing the principle of the present invention, FIGS. 2 to 10 are diagrams showing an embodiment of the present invention, and FIGS. 2 and 3 show examples of the structure of an outline font file. 4 shows the relationship between outline point data and drawing data. FIGS. 5 and 6 show examples of conversion control parameter files. FIGS. 7 to 9 show outline font conversion operation flows according to the present invention. An example is shown in FIG.
Shows an explanatory diagram of the conversion operation.

In this embodiment, a contour drawing means 6 for drawing a contour of an outline font represented by a coordinate point and a coordinate point attribute, and a normal to the center of the contour from the contour coordinate point of the outline font A normal vector calculating means 71 for calculating a vector (hereinafter, sometimes simply referred to as a normal line); and an intersection coordinate calculating means for calculating a coordinate point of an intersection between the calculated normal vector and an opposing contour line. 72, and a midpoint between a coordinate point at which the normal vector is generated and a coordinate point of an opposing contour line intersecting the normal line is calculated, and a center point of the center line of the contour line opposing the contour line is calculated. A coordinate calculating means 73; and a conversion control parameter file 3 for storing a conversion rate Nθ corresponding to the normal angle θn of each of the contour coordinate points. The distance dn of a coordinate point of the middle point coordinates and outline on the normal vector, in accordance with the normal angle θn of the coordinate point of the middle point coordinates and outline, constant relative proportions N
Means for generating, for example, an outline font having a wide outline width by changing the angle θ is a necessary means in the present embodiment. Note that the same reference numerals indicate the same object throughout the drawings.

Hereinafter, referring to FIG. 1, FIGS.
Hereinafter, the configuration and operation of the font generation device of the present invention will be described. 1) The font generation device is, for example, a personal computer, a workstation, or a similar computer, and includes a central processing unit (CPU), a main storage device (RAM), and an auxiliary storage device (floppy disk drive or hard disk drive) connected to a bus. , A CD-ROM drive, etc.), a keyboard, and a display device.

2) This computer stores a program recorded on a portable recording medium such as a floppy disk or a CD-ROM in a floppy disk drive or a CD-RO.
It can be read by a corresponding reading device such as an M drive.

3) The processing in the embodiment of the invention described later is performed by reading a program recorded on the portable recording medium, storing the program in the main storage device, and executing the program.

In the data processing apparatus of the present invention, as shown in FIG. 1, reference numeral 1 denotes an auxiliary storage unit, and a pre-conversion outline font file 2 storing outline font data to be converted; A conversion control parameter file 3 storing parameter data and a converted outline font file 4 storing outline font data after conversion processing are stored.

Reference numeral 5 denotes an outline processing unit, which is an outline drawing processing unit 6 for drawing a font outline from the data of the outline font file 2 before conversion, and an outline processing unit based on the data (point data) of the outline font file 2 before conversion. An outline vector processing unit 7 for calculating a normal vector, collating (overlapping) with the outline drawn by the outline drawing processing unit 6 and calculating the center coordinates of the outline, and an outline vector processing unit 7
The outline width of the pre-conversion outline font file 2 is converted using the normal vector, center coordinates, and the data (conversion rate) of the conversion control parameter file 3 calculated in
An outline conversion processing unit 8 stores the converted outline font file 4 in the outline font file 4.

Reference numeral 9 denotes a drawing data holding unit for temporarily storing data drawn by the outline drawing processing unit 6. Reference numeral 10 denotes a center coordinate and a normal vector of the contour calculated by the outline vector processing unit 7. It is a midpoint data holding unit for temporarily storing.

FIGS. 2 and 3 show examples of the structure of an outline font file. The outline font file includes a font header section, a character index section, and a character information section as shown in FIG. 2A, and the font header section is shown in FIG. 2B. As described above, information on the entire font file, such as the font name (for example, Mincho font, ~), the number of characters (the number of Mincho font characters, ~), character frame size, etc., is stored.

As shown in FIG. 2C, the character index section stores the character code of each character and the address of the character information record of the character information section in which the character information is stored.
(Pointer) is stored for each character.

The character information section stores a character information record of each character as shown in FIG. 2D, and the character information record is stored in the character information record shown in FIG. As shown in the figure, a character header section, a contour information index section having pointers to a plurality of contour information constituting each character, and a contour point information section.

As shown in FIG. 2 (f), the character header section includes a character code, the number of points indicating the total number of points of a plurality of contours forming one character, the overall character width,
Information about each character such as a left side bearing value indicating a left space, a character width, and a right side bearing value indicating a right space is stored.

The contour information index part is shown in FIGS. 3 (a) and 3 (b).
As shown in, the address where the start point of each contour is stored, the number of points of each contour, the direction of the contour,
The attributes of the contour (coordinates and the state of connection between points, for example, point attributes such as straight-line or straight-curve) are stored for each contour unit. In the contour point information section shown in FIG. 3B, the point information (the coordinate values and the point attributes) constituting each contour is stored in units of points.

FIG. 4 is a diagram showing the relationship between the outline point data stored in the outline point information section and the drawing data. In the drawing, P1 to P10 are points constituting a certain contour line, and (X1, Y1) to (X10, Y10) are the respective contours stored in the contour point information section of FIG. The coordinates of the points are shown, and “C” is the outline drawn by the outline drawing processing unit (contour drawing unit) 6 {see FIG. 1} from these point data.

FIGS. 5 and 6 are diagrams for explaining examples of the conversion control parameter file. In the figure, θn is a normal angle at each point of each contour, and N is a rate of change of the contour, and indicates a conversion magnification of a distance from a center point (middle point) of the contour described later to each point. . FIG. 5A shows the contents of the conversion control parameters in the first embodiment, and FIG. 5B schematically shows the conversion control parameters in the first embodiment. In the first embodiment, the normal angle θ is divided into a plurality of sections, and the rate of change in each section is set to be constant. FIG. 6A shows the contents of the conversion control parameters in the second embodiment, and FIG. 6B schematically shows the conversion control parameters in the second embodiment. In the second embodiment, the angle of the normal is divided into a plurality of sections, and for each section,
By setting the start change rate Nms and the end change rate Nme, the setting is such that the change rate in each section changes at a constant rate.

Hereinafter, the operation of the embodiment of the present invention will be described with reference to the operation flow of FIGS. 7 to 9 and the operation explanatory diagram of FIG. FIG. 7 shows the operation of the outline drawing processing unit 6 described above, and FIG.
FIG. 9 shows the operation of the outline conversion processing unit 8 described above, and the numbers 60, 61, 70 to 74, 80 to 84
Indicates a process number for explanation. In FIG. 10, Pn indicates a point of a contour point to be processed.
Indicates a normal line from the contour point Pn, Qn indicates an intersection of the normal and the opposite contour line, Sn indicates a middle point of the contour line to be processed and the opposite contour line, and θn indicates The angle of the normal line at the point is shown, dn is the distance from the midpoint Sn to the contour point (point) Pn, Pn 'is the contour point after transformation, and dn' is the coordinate point transformation. The subsequent distance from the middle point Sn to the Pn ′ is shown.
The coordinates of each point are indicated by adding a coordinate point number name after X and Y.

First, the outline drawing processing section 6 shown in FIG. 7 reads out the outline points from the outline font file 2 before conversion in the processing 60, and executes processing 61
In, the drawing processing is performed, and the drawing data is temporarily stored in the drawing data holding unit 9. These processes are repeated until the above-mentioned contour point data ends.

In the next outline vector processing unit 7,
In process 70, the contour point data (XP) of the contour point Pn for which the normal line is to be obtained is obtained from the contour point information section of the outline font file 2 before conversion {see FIG. 3 (b)}.
n, Ypn, KPn) and the contour points Pn-
1, Pn + 1 contour point data (XPn-1, YPn-1, KP
n-1), (XPn + 1, YPn + 1, KPn + 1) and the contour direction and contour attribute are read from the contour information index section {see FIG.

In the process 71, the angle θ of the normal H to the point Pn shown in FIG. 10 is calculated from the data read in the process 70. Specifically, for example, a half of the intersection angle of the connection line connecting the point Pn and the adjacent Pn + 1 and Pn-1 at the point Pn is regarded as the tangential direction of the point Pn. A tangent line (in FIG. 10, a line in a direction orthogonal to the dotted line) is defined as a normal line H, and, for example, an angle θ with the horizontal direction is calculated. << See FIG. 10 >> In the process 72, the coordinates (XPn, Ypn) of the contour point Pn read out in the process 70 and the normal H obtained from the normal angle θn calculated in the process 71 are stored in the drawing data. By superimposing (collating) with the drawing data held in the section 9, the coordinates (XQn, YQn) of the intersection Qn between the normal H and the opposite contour are calculated.

In the process 73, the coordinate value of the middle point Sn of the contour point Pn is calculated as follows: XSn = (XPn + XQn) / 2 YSn = (YPn + YQn) / 2 Calculated by calculation.

In the process 74, the normal angle θn calculated in the process 70 and the coordinate value (XSn, YSn) of the midpoint Sn calculated in the process 73 are stored in the midpoint data holding unit 10 shown in FIG. Store. These processes are repeated until the contour point data ends.

In the next outline conversion processing section 8,
At 80, the contour point data (XPn, YPn, K) of the contour point Pn to be converted is obtained from the contour point information section of the outline font file 2 before conversion {see FIG. 3 (b)}.
Pn).

In the process 81, the midpoint coordinates Sn (XSn, YSn) corresponding to the contour point Pn and the normal angle θn
Is read from the midpoint data holding unit 10 shown in FIG. In the process 82, the normal angle θn read in the process 81 is compared with the conversion control parameter file 3 (see FIG. 1) described with reference to FIGS. 5 and 6 to obtain the conversion rate Nθ. In this process, in the case of the first embodiment shown in FIG. 5, the conversion rate Nθn is a constant conversion rate indicated by a normal angle section including the normal angle θn. In the case of the second embodiment shown in FIG. 6, the start normal angle θs, the end normal angle θe, and the start change rate Ns of the normal angle section including the normal angle θn are included.
And the end change rate Ne, the change rate Nθn is a change rate calculated by Nθn = Ns + θn * (Ne−Ns) / (θe−θs).

In the process 83, first, a distance dn from the midpoint Sn to the contour point Pn is determined. The calculated distance dn is the coordinates (XPn, YPn) of the contour point Pn.
From the coordinates (XSn, YSn) of the midpoint Sn, dn
^{= √ (XPn-XSn) 2} + can be calculated by (YPn-YSn) ^2.

Next, based on the change rate Nθ obtained in the above process 82, the distance d from the midpoint Sn to the coordinate point Pn 'after the conversion is obtained.
n ′ is calculated by dn ′ = dn * Nθ. Then, the coordinates (XSn, YS) of the middle point Sn
n), the normal angle θn, and the distance dn ′ to the coordinate point after the conversion, the coordinates (XPn ′, YPn ′) of the converted contour point Pn ′ can be obtained as follows: XPn ′ = XSn + dn ′ * cos (Θn + 180 °) YPn ′ = YSn + dn ′ * sin (θn + 180 °)

In step 84, the data of the modified contour point Pn 'obtained in step 83 is stored in the converted outline font file 4 shown in FIG. These processes are repeated until the contour point data ends.

As described above, according to the font generating apparatus of the present invention, the center point (middle point) S of each contour constituting a character
The contour width can be relatively changed based on n.
In other words, instead of moving the coordinates of the contour at a constant width regardless of the width of the original contour as in the past, if the width of the original contour is narrow, change it to a width corresponding to that width. Can be.

As described above, according to the present invention, in a font generating apparatus for creating an outline font having a different outline width (weight) from an already created outline font, the outline font represented by a coordinate point and a coordinate point attribute is generated. Contour drawing means for drawing a contour, calculation means for a normal vector from the contour coordinate point of the outline font toward the center of the contour, and coordinate points of intersections of opposing contour lines intersecting the calculated normal vector Calculating means for calculating an intermediate point between a coordinate point at which the normal vector is generated and a coordinate point of an opposing contour intersecting with the normal to obtain a center line of the opposing contour; The distance between the point and the coordinate point of the contour line is increased by a constant relative ratio or a relative ratio changed at a constant ratio according to the normal angle between the center point and the coordinate point of the contour line. Or by reducing, it is characterized in that so as to generate a wide contour line or narrow outline font.

[0046]

As described above in detail, according to the font generating apparatus of the present invention, generation of outline fonts having different outline widths is performed by using the coordinates of the center point of the outline of the font and each point on the outline. Since the relative change is made based on the distance and the normal angle on each point, outline data (family typeface) with a narrow outline width can be generated toward the tip. In this case, the amount of manual tip correction can be reduced, and the effect of greatly improving the productivity of the family typeface can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram of the principle of the present invention.

FIG. 2 shows an embodiment of the present invention (part 1).

FIG. 3 shows an embodiment of the present invention (part 2).

FIG. 4 shows an embodiment of the present invention (part 3).

FIG. 5 shows an embodiment of the present invention (part 4).

FIG. 6 shows an embodiment of the present invention (part 5).

FIG. 7 shows an embodiment of the present invention (part 6).

FIG. 8 shows an embodiment of the present invention (part 7).

FIG. 9 shows an embodiment of the present invention (part 8).

FIG. 10 shows an embodiment of the present invention (part 9).

FIG. 11 is a diagram illustrating a conventional font generation device.

[Explanation of symbols]

1 Auxiliary storage unit 2 Outline font file before conversion 3 Conversion control parameter file, conversion control parameter table 4 Outline font file after conversion 5 Outline processing unit 6 Outline drawing processing unit, outline drawing unit 7 Outline vector processing unit 8 Outline conversion processing unit 9 Drawing data holding unit 10 Midpoint data holding unit 60,61 Each processing in outline drawing processing unit 70,71,72,73,74 Each processing in outline vector processing unit 80,81,82,83,84 Outline conversion Each processing in the processing unit P1, P2, ~ Pn Contour point Qn Intersection point of contour line with opposing contour normal Midpoint, midpoint, center point of contour θn Normal angle dn Distance between midpoint and contour point Pn 'Changed contour point dn' Distance between midpoint and changed contour point

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Michiko Tabata 4-1-1, Kamidadanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture Inside Fujitsu Limited (72) Inventor Tadashi Saito 4-1-1, Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture No. 1 Inside Fujitsu Limited

Claims (3)

[Claims] 1. An outline drawing means for drawing an outline of an outline font represented by a coordinate point and a coordinate point attribute, and a method of calculating a normal vector from the outline coordinate point of the outline font toward the center of the outline. A line vector calculation unit, an intersection coordinate calculation unit that calculates a coordinate point of an intersection of an opposing contour line that intersects with the calculated normal vector, a coordinate point that generates the normal vector, and the normal vector. A midpoint coordinate calculating means for calculating an intermediate point between the coordinate points of the intersecting opposing contour lines and obtaining a center line between the contour line and the opposing contour line, and corresponding to a normal angle of each of the contour coordinate points. A conversion control parameter file that stores a conversion rate, with reference to the conversion control parameter file, the distance between the coordinates of the midpoint coordinates and the contour line on the normal vector,
A font generating apparatus, wherein the outline width of an outline font is changed by increasing or decreasing at a fixed relative ratio according to the normal angle between the midpoint coordinates and the coordinate points of the outline. 2. The font generating apparatus according to claim 1, wherein said constant relative ratio is increased or decreased by a constant ratio. 3. A procedure for causing a computer to draw an outline of an outline font represented by a coordinate point and a coordinate point attribute, and a procedure of calculating a normal vector from the outline coordinate point of the outline font toward the center of the outline. And a procedure for calculating a coordinate point of an intersection between the calculated normal vector and an opposing contour line intersecting; and a coordinate point at which the normal vector is generated and a coordinate of the opposing contour line intersecting the normal vector. A procedure for calculating an intermediate point between the points and a center line between the contour line and the contour line opposite thereto, using a conversion rate corresponding to a normal angle of each of the contour coordinate points,
A step of changing the outline width of the outline font by increasing or decreasing at a fixed relative ratio according to the normal angle between the midpoint coordinates and the coordinate points of the outline, and a computer-readable program that records a program for executing recoding media.