JPH04352193A - Expansion system for character string - Google Patents

Abstract

PURPOSE:To expand the character string on a slanting line when the character string is displayed on a screen or printed on a form. CONSTITUTION:A character string specifying means 1 specifies the character string to be expanded and a reference line specifying means 2 specifies the slanting line as the reference line for the expansion of the character string. A character position determining means 3 determines the expansion position of the character string, specified by the character specifying means 1, on the slanting line, specified by the reference line specifying means 2, as the coordinates of a point obtained by rotating coordinates when the character string is expanded on a horizontal straight line in a coordinate space having its origin at the left lower corner of the screen or form around the start point of the slanting line by the inclination of the slanting line.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to displaying character strings on a screen,
Regarding the method of developing character strings used when printing on paper, etc., determining the position of each character, especially when arranging character strings on an arbitrary reference line (hereinafter, arranging character strings is referred to as "developing character strings") Regarding the expansion method of character strings.

0002

[Prior Art] Conventionally, in this type of string expansion method,
Strings could only be expanded in horizontal and vertical lines.

0003

[Problem to be Solved by the Invention] In the conventional character string expansion method described above, character strings could only be expanded on straight lines in the horizontal and vertical directions. The drawback was that it was not possible.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a character string expansion method that allows character strings to be expanded on diagonal lines.

Another object of the present invention is to provide a character string expansion method that allows character strings to be expanded on circular arcs.

[0006]

[Means for Solving the Problems] The character string expansion method of the present invention includes a character string specifying means for specifying a character string to be expanded, a reference line specifying means for specifying a diagonal line as a reference line for expanding the character string, and the above-mentioned. and character position determining means for determining the development position of the character string specified by the character string specifying means on the diagonal line specified by the reference line specifying means.

Further, the character string expansion method of the present invention includes a character string specifying means for specifying a character string to be expanded, a reference line specifying means for specifying an arc as a reference line for expanding the character string, and the character string specifying means. and character position determining means for determining the development position of the character string designated by the character string on the arc designated by the reference line designating means.

[0008]

[Operation] In the character string expansion method of the present invention, the character string designation means specifies the character string to be expanded, the reference line designation means specifies a diagonal line as the reference line for expanding the character string, and the character position determination means specifies the character string to be expanded. The development position of the character string specified by the column specifying means on the diagonal line specified by the reference line specifying means is determined.

Further, in the character string expansion method of the present invention, the character string designation means specifies a character string to be expanded, the reference line designation means specifies an arc as a reference line for expanding the character string, and the character position determination means determines the development position of the character string specified by the character string specifying means on the arc specified by the reference line specifying means.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the structure of a character string expansion method according to a first embodiment of the present invention. The character string expansion method of this embodiment includes a character string specifying means 1 for specifying a character string to be expanded, a reference line specifying means 2 for specifying a diagonal line as a reference line for expanding the character string, and and a character position determining means 3 for determining the development position of the character.

Next, the operation of the character string expansion method of the first embodiment configured as described above will be explained with reference to FIG.

The character string specifying means 1 allows the user to specify a character string to be expanded, and obtains the number of characters N (positive integer) in the character string and the width a of each character (same for all characters).

Next, the reference line specifying means 2 allows the user to specify a diagonal line as a reference line, and the starting point of the diagonal line (x0, y0
) and the coordinates of the end point (x1, y1).

Next, the character position determining means 3 determines the coordinates of the lower left corner of the font of each character in the character string developed on the diagonal line in a coordinate space whose origin is the lower left corner of the screen or paper. (x, y) (hereinafter, the coordinates of the lower left corner of the character font are simply referred to as character coordinates), and the coordinates (x', y') when the character string is expanded on a horizontal straight line are the starting point of the diagonal line ( x
0, y0) as the center and determined as the coordinates of a point rotated by the slope α of the diagonal line.

However, the slope α of the diagonal line is α=arcta
n{(y1 - y0)/(x1 - x0)}.

For example, the coordinates (x', y') of the nth character A in a character string when expanded on a horizontal straight line are: x'=x0 +(n-1)a, y'= Since y0, the coordinates (x, y) of the letter A developed on the diagonal line are
is, x=x0 + (n-1)a・cos α, y=x0 + (
n-1) a・sin α is determined.

Furthermore, the character position determining means 3 determines that the inclination α of the character (the inclination of the lower side of the character font) coincides with the inclination α of the diagonal line.

FIG. 3 is a block diagram showing the structure of a character string expansion method according to a second embodiment of the present invention. The character string expansion method of this embodiment includes a character string specifying means 11 that specifies a character string to be expanded, a reference line specifying means 12 that specifies an arc as a reference line for expanding the character string, and and a character position determining means 13 for determining the development position of the character.

Next, the operation of the character string expansion method of the second embodiment configured as described above will be explained with reference to FIG.

The character string specifying means 11 allows the user to specify a character string to be expanded, and obtains the number N of characters in the character string and the width a of each character.

Next, the reference line specifying means 12 allows the user to specify an arc as the reference line, and determines the starting point (x0, y0) of the arc.
), end point (x1, y1) and center point (x2,
Obtain the coordinates of y2).

Next, the character position determining means 13 determines the position in a coordinate space with the lower left corner of the screen or paper as the origin (0,0).
The coordinates (x, y) of each character are the starting point of the arc (x0, y0
) is determined as the coordinates of a point rotated by a rotation angle γ corresponding to the position of the character in the character string around the center point (x2, y2) of the circle.

However, the radius r of the circular arc is r={(x0
−x2 )2 +(y0 −y2 )2 }1/2.

[0025] Also, the angle δ formed by the radius r connecting the center point (x2, y2) and the starting point (x0, y0) of the circular arc is:
δ=arctan {(y0 −y2 )/(x0 −x
2)}.

Furthermore, the rotation angle β for one character is β=ar
ctan(a/r).

For example, the rotation angle γ of the nth character A in the character string is γ=
(n-1)β, so the coordinates (x, y) of the letter A expanded on the arc
is, x=x2 +r・cos{δ-(n-1)β}, y=y
2 + r·sin {δ−(n−1)β}.

Further, the character position determining means 13 determines the inclination α of the character A as α=δ−(n−1)β−π/2.

By the way, in each of the above embodiments, the character position determining means 3 and 13 move the characters of the character string from the left to the character width a.
We have explained the case where the characters are expanded sequentially, but by changing the width a of the characters or changing the coordinates of the rotation source, the characters in the string can be centered, aligned to the right, and distributed evenly, and expanded on diagonal lines and arcs. Needless to say, you can do it.

[0030]

Effects of the Invention As described above, the present invention has a character string specifying means for specifying a character string to be expanded, a reference line specifying means for specifying a diagonal line as a reference line for expanding the character string, and a character string specifying means. By providing a character position determining means for determining the development position of a specified character string on the diagonal line designated by the reference line designation means, it is possible to develop the character string on any diagonal line. be.

The present invention also provides a character string specifying means for specifying a character string to be expanded, a reference line specifying means for specifying an arc as a reference line for expanding the character string, and a character string specified by the character string specifying means. By providing the character position determining means for determining the development position on the circular arc designated by the reference line designation means, there is an effect that the character string can be developed on any arbitrary circular arc.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a character string expansion method according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an outline of character position determination by the character position determining means in FIG. 1;

FIG. 3 is a block diagram showing the configuration of a character string expansion method according to a second embodiment of the present invention.

FIG. 4 is a diagram showing an outline of character position determination by the character position determining means in FIG. 3;

[Explanation of symbols]

1, 11 String specification means 2,12 Reference line specification means 3,13 Character position determining means

Claims (2)

[Claims] 1. Character string specifying means for specifying a character string to be expanded, reference line specifying means for specifying a diagonal line as a reference line for expanding the character string, and the reference for the character string specified by the character string specifying means. 1. A character string development method comprising: character position determining means for determining a development position on a diagonal line designated by a line designation means. 2. Character string specifying means for specifying a character string to be expanded; reference line specifying means for specifying a circular arc as a reference line for expanding the character string; and the reference for the character string specified by the character string specifying means. 1. A method for developing character strings, comprising character position determining means for determining a developing position on an arc specified by a line specifying means.