JPH01200488A - User definition line kind processing system - Google Patents

Abstract

PURPOSE:To print a segment of a pattern desired by a user by constituting the title system so that a user definition line kind pattern storage device stores the pattern of a segment which s defined by the user, and a user definition line kind length storage device stores each fundamental pattern length for constituting the segment which is defined by the user. CONSTITUTION:A graphic which is stored in a display memory 3 is analyzed by a bit map processor 12, and a pattern of a one-point chain line desired by a user is written in a user definition line kind pattern storage device 17. Also, the length of a fundamental pattern for constituting this one-point chain line is extracted and written in a user definition line kind length storage device 18. In such a state, magnification for showing a ratio of a coordinate space VDC for defining a graphic, etc. and a physical coordinate space is calculated 20, and a one-point chain line, a broken line, a dotted line, etc. being segments which is enlarged or reduced length of each fundamental pattern which is read out of the device 18 by a pattern converter 19 are generated. Those segments can be written in a line style memory 7 and a line style length memory 6 from the device 17.

Description

[Detailed Description of the Invention] [Summary] A huge amount of data is prepared regarding a user-defined line type processing method that enables a graphic processing device to display and/or print line segments of a pattern desired by the user. The purpose of this system is to display and/or print line segments of a pattern desired by the user without the user having to worry about the data. In an apparatus for displaying and/or printing developed figures, a user-defined line type pattern storage means for storing a line type pattern defined by a user and a length of a basic pattern constituting the line type pattern defined by the user is provided. a calculation means for calculating a magnification for enlarging or reducing the size of a figure in accordance with a ratio between a coordinate space defining the figure and a physical coordinate space; and a user-defined line type pattern. The length of the line type pattern read from the storage means, the length of the basic pattern constituting the line type pattern read from the user-defined line type length storage means, and the magnification calculated by the calculation means, is defined by the user in the physical coordinate space. A pattern conversion means is provided for forming a line type pattern using a basic pattern whose length is expanded or reduced in accordance with the magnification.

C. Field of Industrial Application] The present invention relates to a graphic processing device, and particularly to a user-defined line type processing method that allows line segments of a pattern desired by the user to be displayed and/or printed.

In the field of graphic processing, line types are specified for line segments for displaying and/or printing drawings and the like. The designated line type includes a solid line, a broken line, a dotted line, a dashed line, and the like. These line segments are then displayed and/or printed in a fixed pattern on a display screen or on printing paper.

That is, since line segments are displayed and/or printed in a certain basic pattern determined by hardware, the line segments may differ from the pattern desired by the user.
It is desirable to be able to display and/or print line segments composed of basic patterns desired by the user.

[Conventional technology]

FIG. 4 is a block diagram illustrating the conventional technology.

When the main control unit 1 receives a graphic designation from, for example, a keyboard/mouse 2, it stores the graphic in the display memory 3 as a logically expressed graphic. In this logically expressed graphic, for example, a line segment, a broken line, a circle, etc. are specified as graphic elements, and a color, line type, coordinate value, etc. are specified as its attributes.

Therefore, the figures stored in the display memory 3 are figures on a coordinate space (referred to as VDC space) that defines figures, etc., and the figure elements read out from the display memory 3 are analyzed by the bitmap processor 4. As a line type pattern, for example, a pattern of a dashed dotted line is sent to the line style memory 7, and the length of the basic pattern constituting the dashed dotted line is sent to the line style length memory 6,
stored respectively.

The DDA circuit 5 that draws a vector receives the coordinate values of the starting point and ending point of the dashed line from the bitmap processor 4,
The line style memory 7 reads out the fact that the line is a one-dot chain line, and the length of the basic pattern constituting the one-dot chain line from the line style length memory 6. A line of 1 yen per point is drawn in the frame memory 9 where .

Further, when a circle (line type is a solid line) is specified as a graphic element, the DDA circuit 5 receives the coordinate values of two points indicating the minimum section on the circumference from the bitmap processor 4, and sequentially draws the two points with a short solid line. A circle is drawn in the frame memory 9 by connecting the spaces.

The dash-dotted line and circle drawn in the frame memory 9 are sent to the display unit 11 and displayed with color information added by the look amplifier table IO.

[Problem that the invention seeks to solve]

FIG. 5 is a diagram illustrating the problems of the prior art.

The figure stored in the display memory 3 is a figure in the VDC space, and the area of the VDC space is as shown in FIG. 5(b).
As shown in FIG. If a dashed line ■, a circle ■, and a dashed line ■■ indicating the center are defined in the VDC space using the Nido board/mouse 2, then the display unit 11 displays the dashed line ■, the circle ■, and the circle ■, which have been reduced to 1/32. -A dotted chain line ■■ is displayed.

In this case, as described above, the bisotomasopubu mouth selector 4 provides the line style length memory 6 with the length of each basic pattern constituting the dashed line or the dashed-dotted line, but since this is a predetermined length, the dashed line The length a of the basic pattern constituting is reduced to 1./32, and becomes the length given by the bitmap processor 4 instead of becoming the length b of the basic pattern indicated by the broken line ■. Therefore, even if a broken line is defined in the VDC space, there is a problem in that when it is expressed in the physical coordinate space, that is, on the display unit 11, it becomes six different patterns.

Also, the circle ■ defined in the VDC space is reduced to 1/32 and displayed as a circle ■ on the display unit 11, but as above, the length of the basic pattern constituting the -dotted chain line ■■ C is reduced and displayed as a dashed-dotted line ■■ instead of a dashed-dotted line ■■, which is made up of the length d of the basic pattern given by the bitmap processor 4. Therefore, it is a point defined in the VDC space. It is expressed as a dot-dash line ■■ with a pattern different from a chain line. In this case, as shown in the figure, a situation may occur in which the dashed-dotted lines do not intersect at the center of the circle.

To prevent this situation from occurring, and to ensure that the dashed-dotted lines that indicate the center of the circle intersect at the center of the circle,
Corresponding to that circle, it is necessary to prepare in the display memory 3 a pattern of line segments to which coordinate values specifying the length of the basic pattern constituting the -dotted chain line are provided.If there are multiple such circles, each Corresponding to the circle, it is necessary to prepare a line segment pattern with coordinate values specifying the length of the basic pattern constituting the -dotted chain line, so the amount of data defined in the display memory 3 is enormous. There is a problem with becoming.

Furthermore, for broken lines and dashed-dotted lines made up of predetermined basic patterns provided by Pitmasop Broset+J-4, dashed lines and dashed-dotted lines of the pattern desired by the user can be displayed.
There is a problem that it cannot be printed.

In view of these problems, the present invention stores the line type pattern defined by the user and the length of the basic pattern defined by the user, and reduces or reduces the length in accordance with the ratio between the VDC space and the physical coordinate space. By calculating the enlargement magnification and reducing or expanding the length of the line type pattern and basic pattern defined by the user according to this magnification, line segments of the user's desired pattern can be displayed/printed without preparing a huge amount of data. It is intended to.

[Means for solving problems]

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

As explained with reference to FIG. 4, the main control section 1 stores logically expressed figures in the display memory 3.

The graphics stored in the display memory 3 are analyzed by the bitmap processor 12, and a line segment, for example, a dashed-dotted line, is extracted into the user-defined line type pattern storage means 17, and the pattern of a dashed-dotted line desired by the user is stored. written.

Further, the length of the basic pattern constituting the dashed-dotted line is extracted and written into the user-defined line length storage means 18. Then, a coordinate transformation matrix for drawing from the VDC space to the physical coordinate space is sent to the calculation means 20, and the VDC
A scaling factor is calculated that represents the ratio of space to physical coordinate space.

The magnification calculated by the calculation means 20 is sent to the pattern conversion means 19, and the pattern conversion means 19 uses this magnification to enlarge or reduce the length of each successive basic pattern from the user-defined line length storage means 18, and converts it into a user-defined line. Based on the pattern read from the seed pattern storage means 17, for example, when a dash-dot line is assembled, the pattern of the dash-dot line is sent to the line style memory 7, and the length of the basic pattern constituting the dash-dot line is set as the line style length. Send to memory 6.

The DDA circuit 5 receives the coordinate values of the start and end points of the dashed-dotted line from the bitmap processor 12, and reads out the pattern of the dashed-dotted line and the length of the basic pattern constituting the pattern from the line style memory 7 and line style length memory 6. , as shown in FIG. 4, a dashed line is drawn in the frame memory via the frame memory control circuit.

[Effect]

With the above configuration, the user-defined line type pattern conversion means 17 stores the line segment pattern defined by the user, and the user-defined line type length storage means 18 stores each line segment pattern defined by the user'. In order to memorize the length of the basic pattern, the length specified by the user is enlarged or reduced by the magnification calculated by the calculating means 20, i.e., the -dotted chain line, the broken line,
A dotted line or the like can be created by the pattern conversion means 19 and written into the line style memory 7 and line style length memory 6.

Therefore, a huge amount of data is used for display memory 3,
The user can display/print the line segments of the desired pattern without having to think twice.

〔Example〕

FIG. 2 is a block diagram of a circuit showing an embodiment of the present invention.
FIG. 3 is a diagram illustrating the operation of FIG. 2.

In FIG. 2, the same reference numerals as in FIG. 4 indicate the same functions. As mentioned above, the main control unit 1 displays logically expressed figures on the display memory (not shown) as shown in FIG. The dashed-dotted lines ■ and @, and the dashed-dotted line 0 indicating the center of the circle [phase]
and [phase] are stored. However, for these dashed-dotted lines ■ to [phase], e is used as the length of the basic pattern of the dashed-dotted lines.

This figure is analyzed by the bitmap processor 12, and a line segment, for example, a dash-dotted line, is extracted from the figure element.
- The fact that the line is a dot-dashed line is written into the user-defined line style memory 13.

Further, the length e of the basic pattern constituting the -point tjY line is extracted and written into the user-defined line style length memory 14. Then, seven coordinate transformation tricks for drawing from the VDC space to the physical coordinate space are sent from the bitmap processor 12 to the magnification calculation circuit 16.
A scaling factor is calculated that represents the ratio of space to physical coordinate space.

The magnification calculated by the magnification calculation circuit 16 is the pattern conversion circuit 1
5, the pattern conversion circuit 15 uses this magnification to enlarge or reduce the length of each basic pattern read from the user-defined line style length memory 14, i.e., e if it is a -dotted chain line, and converts it into a user-defined line style. Based on the pattern read from the memory 13, this pattern is
If a line is shown, when it is assembled as a dash-dot line, the pattern of the dash-dot line is sent to the line style memory 7, and the length of the basic pattern constituting the dash-dot line is sent to the line style length memory 6.

That is, if the physical coordinate space is as shown in FIG. 3(a), the length r of the basic pattern is sent to the line style length memory 6.

1) When drawing a circle in the frame memory 9, which is a physical coordinate space, the D A circuit 5 receives the coordinate values of two points on the circumference from the bitmap processor 12 as described above, and draws the coordinate values of the third point on the circumference.
Draw the circle [phase] in Figure fb) as shown in the circle [phase] [phase] in Figure 3 (al).

Also, when drawing a point S'A line @ @ and o@l indicating the center of the circle ■ and [phase], the coordinate values of the starting and ending points of this - dotted line, for example - in Fig. 3 (a). When drawing the point fAKfA@, receive the coordinate values of ■ and 0, read out the dashed-dotted line pattern and the length f of the basic pattern constituting the pattern from the line style memory 7 and line style length memory 6, and draw the frame. A chain line is drawn in the frame memory 9 via the memory control circuit 8.

The circles and dashed lines drawn in the frame memory 9 are added with color information by the lookup table 10 and sent to the display unit 11 for display.

Although this embodiment has been described as a display device, graphics can be printed by reading and printing the contents of the frame memory 9.

(Effects of the Invention) As described above, the present invention allows line segments of a pattern desired by the user to be displayed and/or printed without preparing a huge amount of data.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a block diagram of a circuit showing an embodiment of the present invention, Fig. 3 is a diagram explaining the operation of Fig. 2, and Fig. 4 is a diagram showing the conventional technology. FIG. 5, a block diagram to be explained, is a diagram illustrating problems of the prior art. In the figure, ■ is the main control unit, 2 is the keyboard/mouse, 3 is the display memory, 4.12 is the bisoto map processor, 5 is the ODA circuit, and 6 is the line style length memory. 7 is a line style memory, 8 is a frame memory control circuit, 9 is a frame memory, 10 is a lookup table, 11 is a display section, 13 is a user-defined line style memory, 14 is a user-defined line style length memory, 15 is a pattern conversion 16 is a magnification calculation circuit, 17 is a user-defined line type pattern storage means, 18 is a user-defined line type length record j17 means, 19 is a pattern conversion means, and 20 is a total of 11 means. Stem; Figure $ 2 Figure 4 Conventional ↑ husband out ( = □X (b > 0)

Claims (1)

[Scope of Claims] A device that reads a figure logically expressed on a memory (3), transforms the coordinates and develops it in a physical coordinate space, and displays and/or prints the figure developed in the physical coordinate space, User-defined line type pattern storage means (17) for storing line type patterns defined by the user; and user-defined line type length storage means (18) for storing the lengths of basic patterns constituting the user-defined line type patterns. a calculation means (20) for calculating a magnification for enlarging or reducing the size of the figure according to the ratio between the coordinate space that defines the figure and the physical coordinate space; and the user-defined line type pattern storage means ( 17) and the user-defined line type length storage means (18).
), and the length of the basic pattern constituting the line type pattern read from ) and the magnification calculated by the calculating means (20), the line type pattern defined by the user is created in the physical coordinate space in accordance with the magnification. A user-defined line type processing method characterized by comprising a pattern conversion means (19) for forming a basic pattern using an enlarged or reduced length.