JPH01246673A - Graphic processor - Google Patents

Abstract

PURPOSE:To save a labor to correct other graphic after editing by changing other graphic data coupled to it together with an editing object graphic with an editing command for a part of a graphic. CONSTITUTION:A control processor 11 decodes an editing command, determines a movement distance, selects the object graphic from the inside of an area buffer 19 and changes the coordinate data only for the movement distance. Next, the control processor 11 extracts the graphic adjoining to the object graphic from the coupling data of the object graphic, extracts the point connected to the object graphic out of the graphics and moves the coordinate data only for the movement distance. After the calculation is completed, the control processor 11 rewrites the data in an area buffer 19. The control processor 11, based on the displaying command from a keyboard 14, sends a command to a displaying processor 20 and the displaying processor 20 displays it at a displaying monitor 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a graphic processing device using a personal computer or the like for creating and editing graphics.

(Prior art) When using this type of device to create a drawing such as a flowchart for a convenience store, shapes such as rectangles and rhombuses are created for each step, and these shapes are connected to each other with line segments. . In this way, drawings that are normally created are composed of combinations of polygons, line segments, and the like. In this specification,
Each component such as a polygon or a line segment is called a figure, and a combination of these figures is called a figure group. Generally, a group of graphics created by a graphics processing device is stored in a memory within the graphics processing device using graphics data that specifies the form and position of each graphic.

With conventional graphic processing devices, when you specify some shapes in a group of created shapes and edit them by enlarging, shrinking, moving, etc., only the graphic data of the edited shape is processed. When a shape is changed, other shapes are not simultaneously edited accordingly.

(Problems to be Solved by the Invention) Therefore, in the conventional device, for example, a rectangle 3L32 and a straight line 33.3 connected to the rectangle 3L32 as shown in FIG.
If there is a group of figures consisting of 4, for example, if the rectangle 32 is moved to the right, the rectangle 32 and the straight lines 33 and 34 will no longer be connected, as shown in FIG. 5(c), and the original group of figures will be The basic structure of will be destroyed. Therefore, further corrections were made to the straight lines 33 and 34 in Figure 5 (d
). As described above, in the conventional graphic processing apparatus, there is a problem in that each time a graphic is edited, other graphics must also be modified, making the operation cumbersome.

SUMMARY OF THE INVENTION An object of the present invention is to provide a graphic processing device that maintains the connection relationship between figures by simultaneously modifying other figures connected to it when some figures in a group of figures are edited. .

[Configuration of the Invention] (Means for Solving the Problems) The configuration of a graphic processing device according to the present invention will be explained with reference to the block diagram of FIG. The device of the present invention includes a memory 1 that stores graphic data that specifies each of a plurality of shapes constituting a graphic group, and connection data that defines a connection relationship between the shapes, and a memory 1 that stores graphic data that specifies each of a plurality of shapes constituting a graphic group, and a memory 1 that stores graphic data that specifies a plurality of shapes constituting a graphic group. a command input means 2 for inputting an editing command for editing the specified figure; a figure editing means 3 for changing the figure data of the specified figure in the memory in accordance with the edit command; the data in the memory so that the connection relationship between the specified figure and the figures connected thereto is maintained based on the figure data of the specified figure changed by the means and the connection data in the memory; A connected figure modification means 4 is provided for modifying the figure data of the connected figures.

(Function) In the above configuration, when an edit command is entered for a part of a shape in a shape group, not only the shape data of that shape is changed, but also the connection relationship between that shape and the shapes connected to it is maintained. The figure data of the connected figures is also changed accordingly. Therefore, there is no need to modify other figures after editing the figure.

(Example) Examples will be explained below.

FIG. 2 is a block diagram showing the configuration of an embodiment of the graphic processing device according to the present invention.

A keyboard 14 and a mouse 15 are connected via an input/output interface 13 to an input/output bus 12 of a control processor 11 that controls the entire apparatus. keyboard 1
From 4 onwards, there are various data such as graphic data that specifies each figure in a figure group, character data that specifies each character in a character group, and editing commands that specify any figure and enlarge, reduce, move, etc. is input. Further, coordinate data defining the position of each drawing is input from the mouse 15. Note that this coordinate data becomes part of the graphic data described above.

These input data and commands are transmitted to the control processor 11 and processed.

A memory 16 is connected to the bus 12. This memory 1
6 includes a program section 17, an area management table 18, and an area buffer 19.

The program section 17 stores an operating program for operating the control processor 11. Area management table 18
Stores area management data that defines what should be displayed in which area of the display screen.

The area buffer 19 stores graphic data and character data that specify the figures and characters to be displayed in each area of the display screen, as well as connection data that defines the connection relationship of each graphic. Note that this connected data is created by the control processor 11 based on the input coordinate data of each figure. The specific contents of the graphic data are shown in Figure 3 (a) and (b).
), and the specific contents of the concatenated data are described in the extended cell shown in FIG. 4 in the format shown, and stored in the area buffer 19. Note that details of these cells will be explained later.

A display processor 20 is connected to the bus 12, and a bitmap memory 21 and a display monitor 22 are connected to the display processor 20. Under the control of the control processor 11, the display processor 20 creates a display screen in the bitmap memory 21 based on the graphic data, character data, and area management data stored in the memory 16, and outputs this screen to the display monitor 22. do.

Next, the figure cell and attribute cell shown in FIG.
The contents of the expanded cell shown in the figure will be explained.

A figure cell is a cell that describes basic data for specifying a figure, and as shown in Figure 3 (a), it includes the cell type, cell ID,
, extended cell pointer, attribute cell pointer, figure coordinate number, and coordinate data columns. The cell type describes the volatile class of the target figure, such as a straight line, square, circle, etc.

The identification number of this cell is written in the cell ID column. The extended cell pointer column describes the address of an extended cell (FIG. 4) in which connected data indicating the connected relationship between the target figure and other figures is written. Furthermore, the address of an expansion cell for expanding the capacity of a graphic cell when the amount of graphic data of the target graphic is extremely large is also written in the expansion cell pointer field. The attribute cell pointer describes the address of an attribute cell (FIG. 3(b)) that describes the attributes of each line segment constituting the target figure. The figure coordinate quantity describes the number of feature points such as vertices and center points for specifying the target figure. In the coordinate data column, coordinate data of each feature point is described. The form of the target figure is defined by the coordinate data of each feature point.

An attribute cell is a cell that describes the attributes of a line segment.
As shown in b), it consists of the following columns: cell type, cell ID, extended cell pointer, lock, color, line type, vertical thickness, horizontal thickness, arrow, and middle color. The cell type and cell ID columns are used for almost the same purpose as that for graphic cells. The expansion cell pointer column describes the address of an expansion cell for expanding the capacity of the attribute cell when there is a large amount of attribute data for the target line segment. The lock column is a column for setting a flag to that effect when it is desired to prohibit changing the attributes of the target line segment.

The color of the target line segment is described between the colors. Solid lines between line types,
The type of line, such as a broken line, is described. The vertical thickness column and the horizontal thickness column respectively describe the vertical thickness and horizontal thickness data of the target line segment.

In the arrow column, data of an arrow attached to the target line segment is written. In the middle fill column, if the target line segment is a closed loop such as a circle, it is written whether or not to fill the inside of the line segment.

The expansion cell shown in FIG. 4 is a cell that describes connection data between the target graphic and another graphic, and is associated with the graphic cell by the expanded cell pointer of the graphic cell of the target graphic, as described above. This expanded cell has columns for cell type, cell ID, next cell pointer, number of connected figures, and connected figure ID. There are n connected figure ID columns, and in this specification, numbers 1-n are added to the end to distinguish them. The same cell types as between the cell types of the corresponding graphic cells are described between the cell types.

The identification number of this extended cell is written in the cell ID.

In the next cell pointer column, the address of an expansion cell for further expanding this expansion cell is written. The connected figure quantity describes the number of other figures connected to the target figure. In each connected figure ID column, the identification number of the figure cell of each of the connected figures is written.

In the above configuration, for example, if there is a group of figures consisting of two rectangles 31, 32 and two straight lines 33,34 shown in FIG. 5(a), specify the rectangle 32 in this group of figures and select The operation of this device will be explained by taking as an example a case where an editing command to move is input from the keyboard 14.

Control processor 11 decodes the editing commands and determines the vertical and horizontal movement distances.

Next, the figure cell of the rectangle 32 is selected from within the area buffer 19, and the coordinate data of each feature point of the rectangle 32, that is, each vertex a, b, c, and d is read from the coordinate data field. Then, this coordinate data is changed by the distance traveled. For example, if the command is to move to the right in Figure 5, each vertex a, b, c,
Change the horizontal coordinate data of d by the distance moved to the right.

Further, the control processor 11 reads out the extended cell describing the connected data of the rectangle 32 according to the extended cell pointer field of the graphic cell of the rectangle 32.

The identification number of the graphic cell of the straight line 33 is written in the connected graphic IDI column of this extended cell, and the identification number of the graphic cell of the straight line 34 is written in the connected graphic ID2 column. According to their identification numbers, control processor 11 selects each graphic cell of straight lines 33 and 34.

Then, from the coordinate data column of each figure cell, straight line 3
3.34 feature points, that is, the starting points e, f and the ending point g,
Read the coordinate data of h. Then, these starting points e,
Based on the coordinate data of f and the end points g and h, which point of contact with the rectangle 32 is determined. As a result, the end point g,
It is determined that h is a contact point.

Also, based on the original coordinate data of the vertices a, b, c, , d of the rectangle 32, the straight line 33 of these vertices is
．． It is determined which vertex defines the tangent to 34.

As a result, it is determined that vertices c and d define a tangent. Next, the coordinate data of the end points g and h of the straight line 33 and 34 are changed by the same amount as the change in the coordinate data of the vertex C1d of the rectangle 32.

That is, the horizontal coordinate data of the end points g and h are changed to the right by the same moving distance as the vertices c and d.

In this way, each vertex a, b, c of the rectangle 32,
After changing the coordinate data of the end points g and h of the line 33. Rewrite to data.

Next, the control processor 11 sends a command to display the edited graphic group to the display processor 20 based on a display command from the keyboard 14 or in accordance with the operating program. In response to the command, the display processor 20 reads out the area management data of the figure group and the figure data of each figure from the memory 16, creates a display image of the figure group in the bitmap memory 21 based on it, and displays this image. is output to the display monitor 22. As a result, Figure 5 (b
) will be displayed. It can be seen that the connection relationship between the straight lines 33 and 34 and the rectangle 32 is maintained by correcting the coordinate data of the contact points g and h.

In the above embodiment, the case of moving a figure was explained as an example, but the same applies to other editing such as enlargement or reduction.

〔Effect of the invention〕

As explained above, according to the present invention, when an editing command is input for some figures in a group of drawings, the figure data of the figure to be edited is changed based on the command, and the figure data is connected to the figure to be edited. Since the configuration is such that the figure data of the figure is also changed, the connection relationship between the figures is maintained even after the figure is edited, and the conventional effort of correcting other figures after editing is eliminated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a graphic processing device according to the present invention, FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 3 is a graphic cell and attributes in the embodiment of FIG. FIG. 4 is a diagram showing the format of an extended cell describing the connected data in the embodiment of FIG. 2. FIG. 5 is an example of the original figure group and the edited figure group according to the present invention. It is a diagram comparing the case using the device and the case using the conventional device. 1... Memory, 2... Command input means, 3...
Figure editing means, 4... connected figure modification means. Applicant's agent Mr. Sato

Claims (1)

[Claims] A memory that stores figure data that specifies each of the plurality of figures constituting a figure group and connection data that defines the connection relationship between the figures; a command input means for inputting an editing command to perform the editing; a figure editing means for changing the figure data of the specified figure in the memory in accordance with the edit command; Based on the figure data of the specified figure and the connection data in the memory, the figure data of the connected figure in the memory is updated so that the connection relationship between the specified figure and the figure connected thereto is maintained. A graphic processing device comprising a connected graphic modifying means for modifying a connected graphic.