JP2666552B2 - Line width control method for outline characters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] In a word processor, a line width control method for enlarging / reducing an outline character is provided. For the purpose of outputting high-quality outline characters in line with each other, it is used for line width control when enlarging / reducing the outline characters that have different creation directions depending on the outer outline only or the outer outline and the inner outline. As parameters of, the minimum line length of the overlap of the corresponding vector pairs having different creation directions determined by the typeface of the outline vector and the predetermined reference size, the maximum line width of the vector pair, and the minimum line width are prepared. Is changed according to the output size, and the enlarged / reduced character is developed into a vector to detect a horizontal line / vertical line vector. A vector pair in the vertical or horizontal direction that constitutes the same character line is extracted, and the overlap of the extracted vector pair is longer than the minimum line length defined by the font of the outline character and the output size. For a vector pair whose line width is equal to or smaller than the minimum line width, the coordinates in the line width direction of one vector of the vector pair are always the minimum line width determined by the output size. So go and
The line width is determined.

[Industrial applications]

The present invention relates to a line width control method for enlarging and reducing outline characters in a word processor.

In recent years, word processors have rapidly become widespread with advances in office automation (OA).

At the same time, there is an increasing demand for using outline characters that do not lose their shape even if the characters are enlarged or reduced in order to create beautiful documents.

However, when using the outline characters to output, for example, display, the characters, they are enlarged to an integral multiple or reduced to a size several times smaller than the original created size. Due to the calculation error of the coordinates at the time of enlargement / reduction, the line width may be increased or decreased by one dot, for example, because the line width of the outline character is small. However, there is a problem that the shift is conspicuous and, for example, lowers the quality of display characters, and a line width control method that does not lower the display quality due to the enlargement / reduction is required.

[Problems to be solved by conventional technology and invention]

FIG. 3 is a diagram for explaining a conventional line width control method for outline characters. (A1) and (a2) show examples of the outline character configuration, and (b) shows a problem when the outline character is reduced. Is shown.

First, assuming that the outline character is, for example, the one shown in the diagram (a1), it corresponds to the vectors (1-2), (2-3),..., (12-1) constituting the outline character. Then, as shown in (a2), a column of the end point coordinates (Y1, X1), (Y2, X2), ..., (Y12, X12) of the vector is formed corresponding to each outline character, It is stored in the corresponding memory area.

Here, assuming that, for example, a vector forming a horizontal stroke (shown by oblique lines) of the outline character shown in FIG. 2B is reduced to, for example, 1/4 in the Y direction. Since the coordinates in the Y direction are converted to integers as shown in the figure, two strokes having the same line width have different line widths due to the reduction, and the line widths are not uniform. There was a problem that it became invisible.

SUMMARY OF THE INVENTION In view of the above-described conventional disadvantages, the present invention provides a line width control method that can output a high-quality outline character with a uniform line width when the outline character is enlarged / reduced and output. It is intended to provide.

[Means for solving the problem]

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

The above problem is solved by the outline character line width control method configured as follows.

A line width control method for enlarging or reducing outline characters having different creation directions depending on the outer outline only or the outer outline and the inner outline. , The minimum line length of the overlap of the corresponding vector pairs having different creation directions determined by a predetermined reference size, the maximum line width of the vector pair, and the minimum line width are prepared, and each of them corresponds to the output size. For each of the enlarged or reduced vector data of the control target character constituting the outline character, horizontal and / or vertical portions are extracted separately for each of the above directions, and extracted in one direction. For horizontal and / or vertical line vectors,
The horizontal line in the other direction and / or the vector of the vertical line correspond, the difference in the width direction of the coordinates of the corresponding vector is the maximum line width, the value of the maximum line width x enlargement ratio or reduction ratio. The following is a combination of vectors in which the horizontal and / or vertical overlap of the corresponding horizontal line and / or vertical line vector is equal to or greater than the value of minimum line length × enlargement ratio or reduction ratio with respect to the minimum line length. Is a vector that constitutes the enlarged or reduced outline character of the control target, the horizontal line and or the correspondence of the vertical line vector,
When the horizontal line coordinate and / or the vertical line coordinate are performed in the order of smaller ones and the correspondence is recognized, the difference between the horizontal line coordinate and / or the vertical line coordinate direction of the corresponding vector is the minimum defined by the output size. Line widths of the enlarged or reduced outline character are shifted by shifting the coordinates of one horizontal line and / or the vertical line vector so that the line width is equal to or smaller than the minimum line width defined by the output size. Is determined.

[Action]

The outer contour of the vector data constituting the outline character is clockwise, for example, and the inner contour is counterclockwise, for example, so that the outer contour and the inner contour are formed in different directions.

With this configuration, when one horizontal character line is viewed, the upper contour, for example, the outer contour is to the right, and the lower contour, for example, the inner contour is to the left.

In the line width control of the present invention, three parameters of the minimum line length, the maximum line width, and the minimum line width are used as parameters for the line width control.
Prepare the type.

The operation of the present invention will be described below by taking the horizontal line stroke of the character shown in FIG. 1 as an example (for example, an outline character whose creation direction differs depending only on the outer contour).

The horizontal line segment of the vector data constituting the outline character is extracted by dividing it into left direction d, e, a and right direction h, f, g, b, c, and is extracted as the right horizontal line segment (vector). On the other hand, considering the correspondence of horizontal line segments (vectors) in the left direction, the deviation of the coordinates in the width direction, that is, the difference, is obtained by multiplying the maximum line width × enlargement (reduction) by the maximum line width determined by the font of the outline character. ) Is not more than the value of the ratio, and the horizontal overlap of both horizontal line segments (vectors) is not less than the value of (minimum line length × enlargement (reduction) ratio with respect to the minimum line length determined by the typeface of the outline character) It is assumed that a combination vector of line segments (vectors) forms a horizontal line of the character. This association is performed in ascending order of the difference in the width direction.

In the example shown in FIG. 1, for example, there is d, e, a for a horizontal line segment (vector) f in the right direction, but the corresponding vector satisfying the above condition is a horizontal line segment (vector) d. You can see that. Similarly, a horizontal line segment (vector) g
Corresponds to the horizontal line segment (vector) e, and the horizontal line segment (vector) b or c corresponds to the horizontal line segment (vector) a. Others are excluded from the target of the vector forming the outline character.

In this manner, for the extracted corresponding vector data pair, if the difference in the width direction, in this example, the Y direction is equal to or less than the minimum line width, the difference is always set to the minimum line width. , So that the coordinates of one horizontal line are shifted.

In the above example, the stroke in the horizontal direction has been described, but the same can be performed in the vertical direction.

The minimum line length, the maximum line width, and the minimum line width are changed and defined according to the output (display) size of the character corresponding to the enlargement / reduction ratio of the outline character. Thus, the line width control as described above can be performed for arbitrary enlargement / reduction.

Therefore, according to the present invention, outline characters are enlarged /
When outputting (displaying) after reducing the size, irregularities in the line width caused by the calculation error of the coordinates at the time of the enlargement / reduction can be adjusted to the minimum line width determined by the respective output (display) sizes. There is an effect that a good and clean output (display) can be obtained.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a view for explaining the principle of the present invention, FIG. 2 is a view showing one embodiment of the present invention, (a) shows a configuration example of a character display system, and (b) Shows an example of an operation flow (in the horizontal direction) in the line width control unit.

According to the present invention, in a word processor, for example, when enlarging / reducing an outline character having a different creation direction between an outer outline and an inner outline, and outputting and displaying the outline character, a font of the outline vector and a predetermined character are used as line width control parameters. The minimum line length of the overlap of the corresponding vector pairs, the maximum line width of the vector pair, and the minimum line width of the corresponding vector pairs, which are determined by the reference size, are prepared, and each is changed according to the output size. Keep in mind,
The reduced character is expanded into a vector, and the horizontal / vertical line vector is detected.
Or, a vector pair in which a vector pair in the left-right direction is extracted, and the overlap of the extracted vector pair is equal to or greater than the minimum line length determined by the font of the outline character, and the line width of the vector pair is equal to or smaller than the minimum line width For the pair, the coordinates in the line width direction of one vector of the vector pair are always
Means for moving the line width so as to be the minimum line width determined by the output size and making the line width the same is a means necessary for carrying out the present invention. Note that the same reference numerals indicate the same object throughout the drawings.

Hereinafter, a method of controlling the line width of an outline character according to the present invention will be described with reference to FIG. 2 while referring to FIG.

First, in the coordinate conversion unit 20 of the character display system shown in FIG. 2A, the coordinates in each outline character font to be displayed are converted into the coordinates of the coordinate system in which the character is displayed, and then enlarged / reduced. The section 21 multiplies the coordinates of the end point of each vector data constituting the outline character by the enlargement / reduction ratio, and converts the coordinates to be output (displayed) into integers.

In the next line width control unit 22, the second
The line width control shown in the operation flow of FIG.

First, for example, a horizontal vector d, e, a in the left direction is extracted and sorted in ascending order of the Y coordinate, that is, the horizontal vector e, d, a. (See processing steps 100 and 101.) Next, in the same manner, the horizontal vectors h, f, g,
b and c are extracted, and the Y vector is in ascending order, that is, a horizontal vector.
Sort as h, f, g, b, c. (Processing steps 102 and 103
Next, a combination in which the Y coordinate difference between the extracted left horizontal vector and the right horizontal vector is equal to or less than the maximum line width determined by the font of the outline character is extracted.

At this time, the Y coordinate of the left horizontal vector is selected to be larger than the Y coordinate of the right horizontal vector. This selection is performed, for example, in ascending order of the Y-coordinate (or X-coordinate) (that is, in the order of smaller line width). By selecting in this way, noise-like vectors other than the vectors constituting the outline character can be excluded.

The above process is a process of extracting upper and lower vectors of the same stroke. (Refer to processing step 104.) For the extracted upper and lower vectors of the same stroke, for example, the Y coordinate of the left horizontal vector is added to the right horizontal vector, and the minimum line width determined by the typeface of the outline character is added to the right horizontal vector. Adjust to match the line width.

By setting the minimum line width to a predetermined line width depending on the output (display) size of the character, the above procedure can be adapted to both enlargement and reduction. As described above, the present invention focuses on the fact that the line width of a character is determined by the difference between the coordinates of the upper and lower vectors of the same stroke, and relates to the same stroke of the outline character. The upper and lower vectors are associated, and when the association is completed, for example, the lower side of the stroke /
The feature is that the vector corresponding to the upper side is moved so that the line width at the time of enlargement / reduction is the minimum line width determined by the font of the outline character and its output (display) size.

〔The invention's effect〕

As described above in detail, the outline character line width control method of the present invention is implemented in a word processor or the like.
When an outline character whose creation direction differs depending on the outer outline or the outer outline and the inner outline is enlarged / reduced and output, the minimum line length and the maximum length determined by the font of the outline vector are used as line width control parameters. Line width,
A minimum line width is prepared, and the minimum line width is defined by changing the minimum line width in accordance with the output size of the outline character, and the enlarged / reduced character is developed into a vector to obtain a horizontal line / vertical line vector. Is detected, and the vertical and horizontal vector pairs forming the same character line are extracted, and the overlap of the extracted vector pairs is equal to or greater than the minimum line length determined by the typeface of the outline character, and For a vector whose line width is equal to or smaller than the minimum line width, the coordinates in the line width direction of one of the vectors of the vector pair are moved so as to be always the minimum line width determined by the output size. Since the line widths are made the same, it is possible to prevent the line widths from becoming uneven due to a coordinate calculation error when the outline characters are enlarged / reduced and displayed. The output of the Ina characters (Display)
There is an effect that can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of the present invention, FIG. 2 is a diagram illustrating an embodiment of the present invention, and FIG. 3 is a diagram illustrating a conventional line width control method for outline characters. In the drawing, 1 to 12 are endpoints of the outline character vector, 20 is a coordinate conversion unit, 21 is an enlargement / reduction unit, 22 is a line width control unit, 100 to 105 are processing steps, is a minimum line length, is a maximum line width. , Indicates a minimum line width, and a to h indicate vectors, respectively.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeki Furuta 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fujitsu Limited (56) References JP-A-1-303489 (JP, A) JP-A-2-234195 (JP, A) JP-A-2-236595 (JP, A)

Claims (1)

(57) [Claims] A line width control method for enlarging or reducing an outline character whose creation direction differs depending on only an outer outline or an outer outline and an inner outline, and outputs the outline character. The outline character typeface, the minimum line length of the overlap of the corresponding vector pairs having different creation directions determined by a predetermined reference size, the maximum line width of the vector pair, and the minimum line width are prepared, and each is output. For each vector data obtained by enlarging or reducing the control target character constituting the outline character, the horizontal direction and / or the vertical direction part is extracted separately for each of the above directions. The horizontal and / or vertical line vector in one direction corresponds to the vector of the horizontal and / or vertical line in the other direction, and the corresponding vector The difference in the width direction of the coordinates of the vector is less than or equal to the value of maximum line width × enlargement ratio or reduction ratio with respect to the maximum line width, and the horizontal direction and / or the vertical direction of the corresponding horizontal line and / or vertical line vector The combination of vectors whose overlap is equal to or greater than the value of the minimum line length x the enlargement ratio or the reduction ratio with respect to the minimum line length is defined as a vector constituting the enlarged or reduced outline character to be controlled, and the horizontal line And, or perform the correspondence of the vertical line vector, in the order of the horizontal line coordinate and / or the vertical line coordinate is small, when the correspondence is recognized, the horizontal line coordinate and / or vertical line coordinate direction of the corresponding vector For differences that are less than or equal to the minimum line width defined by the output size, one horizontal line, and / or so as to always be the minimum line width defined by the output size. Shifting the coordinates of the straight line vector, the line width controlling method in outline character, characterized by determining the line width of the magnified or reduced outline character.