JPH0415762A - Graphic editing system - Google Patents

Abstract

PURPOSE:To omit the need to correct and rewrite the graphics of the same group so as to secure the same limit relation among these graphics by deciding the limit relation among the graphics of the same group and magnifying of reducing the graphics based on the limit relation. CONSTITUTION:A graphic data control part 4 reads out an editing subject graphic selected by a graphic selection means 2 and the data on other graphics divided into groups. Then a limit relation deciding means 6 decides the limit relation among these graphics. The graphics of groups are magnified or reduced in order to maintain the limit relation and then written into a display memory 8. These written graphics are displayed by a display device 1. Thus it is not required to correct the graphics of the same group so as to secure the same limit relation among these graphics.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a graphic editing system used in word processors, desktop publishing, etc., and particularly to a graphic editing system that allows a plurality of graphic elements to be grouped and enlarged or reduced in units of groups. The present invention relates to a graphic editing system.

[Conventional technology]

2. Description of the Related Art Some conventional graphic editing systems recognize a plurality of graphic elements as a group, and can scale the group. In this case, constraints such as spacing between elemental figures are not taken into account, and the results of simply enlarging or reducing each elemental figure at the same scale are combined and displayed as a group conversion result.

[Problem to be solved by the invention]

However, although such a conventional figure editing system has the advantage of simple processing and can achieve high speed, it has the disadvantage that the constraint relationship that the original target figure had is not maintained depending on the enlargement or reduction conversion. For example, in Figure 2 (a
), it is assumed that a rectangular figure A and a figure B included therein are grouped. At this time, when the side of figure A is stretched to form the horizontally enlarged figure A1 shown in Figure 2, etc., the figure B inside it is also enlarged laterally at the same scale and displayed as the horizontally enlarged figure B1. ing. However, if it is necessary to make the interval between figures A and B constant, the constraint relationship is broken, and there is a drawback that it is necessary to further modify and edit the conversion result.

The present invention has been made in view of the problems of the conventional figure editing system. The technical challenge is to be able to maintain the relationship.

[Means to solve the problem]

The present invention is a figure editing system that creates a desired figure by combining a plurality of figure elements, and includes a figure data management section that holds figure data including figure types and grouped figure information; a display memory that retains data to be displayed, a display device that displays graphic information held in the display memory, a graphic selection means that selects a graphic to be converted displayed by the display device; A constraint relationship determination means that reads the figure data of a specified figure and other figures belonging to the group when converting grouped figures and determines the constraint relationship, and constrains the figures in the same group as the selected figure. The present invention is characterized by comprising a figure converting means that enlarges or reduces the figure based on the constraint relationship determined by the relationship determining means.

[Operation] According to the present invention having such features, when a figure to be edited is selected by the figure selection means, figure data of this and other figures grouped together is read out from the figure data management section, and constraints are applied. A constraint relationship between them is determined by a relationship determination means.

Then, the grouped figures are enlarged or reduced so as to maintain the constraint relationship, and are written into the display memory and displayed on the display device.

〔Example〕

FIG. 1 is a block diagram showing the overall configuration of a graphic editing system according to an embodiment of the present invention. In this figure, a display device 1 displays a figure to be edited on a screen, and a mouse 2 is connected as an input means for selecting a figure to be edited, a conversion method, etc. The figure selected with the mouse 2 and its conversion method information are given to the figure selection control section 3. The figure selection control section 3 analyzes this signal, provides an identification signal of the selected figure to the figure data management section 4, and also provides information on the conversion method to the drawing control section 5. The figure data management unit 4 manages figure data such as grouped figures, their types, attributes, etc.
provides the graphic data and graphic data included in the same group as the selected graphic to the drawing control unit 5 based on the selected graphic signal. The drawing control section 5 has a constraint relationship determining means 6 that determines the constraint relationship between a group of grouped figures, and a figure converting means 7 that converts the figures based on the relationship. The figure converted by the figure converting means 7 is then given to the display memory 8. The display memory 8 is constituted by a video RAM etc. that holds graphic data, and the information read from the display memory 8 is displayed on the display device 1.
will be displayed in the display window.

Next, the operation of the drawing control section 5 will be explained in more detail.

As shown in FIG. 2(a), it is assumed that a rectangular frame-shaped figure A and a figure B included within the frame are registered as one group. A case of enlarging this figure in the horizontal direction will be explained. When the operation starts in the flowchart of FIG. 3, first, in step 30, the figure A is converted, that is, enlarged or reduced in the horizontal or vertical direction at an arbitrary magnification, and the figure AI (or A2) is drawn. The user then inputs the conversion method using the mouse 2. Then, the process proceeds to step 31, where the selection method information given by the figure selection control section 3 is determined, and it is checked whether the selection method is the conventional method or the conversion is accompanied by a constraint relationship. If the conversion method is the same as the conventional one, proceed from step 32 to step 33, and calculate the scaling ratio of figure A from the coordinates of the four corners of the rectangle circumscribing the original figure A and the coordinates of the four corners circumscribing the enlarged figure A1. calculate.

Then, proceed to step 34 and change this scaling ratio to figure B.
The figure B1 is converted into a scaled figure B1. Then, the converted data is given to the graphic data management section 4, and the converted data is written into the display memory 8. Then the second
As shown in FIG. 2B, the graphic Bl that has been converted with the same scaling factor as the graphic A1 can be output to the display device 1.

Now, when changing a figure with a constraint relationship, proceed from step 32 to step 35 and calculate the four-way distance between the corresponding coordinates using the coordinates of the four corners of the rectangle circumscribing figure A and the coordinates of the four corners circumscribing figure B. Calculate. The process then proceeds to step 36, where the coordinates of the four corners of the rectangle circumscribing the figure B2 are calculated from the distance obtained here and the coordinates of the four corners circumscribing the enlarged figure A2.

Then, in step 37, the enlargement/reduction ratio of the figure is calculated based on the coordinates of the four corners of the rectangle circumscribing figure B and the coordinates of the four corners of the rectangle circumscribing figure B2 obtained in step 36. Then, figure B is converted based on this enlargement/reduction ratio. Then, the converted data is written to the graphic data management section 4 and held in the display memory, and the process ends. Then, as shown in FIG. 2(C), a new laterally enlarged figure B2 can be drawn with the lengths of the frame portions between figures A and B being equal. Here, the drawing control unit 5 achieves the function of the constraint relationship determining means 6 that determines the constraint relationship between two figures belonging to the same group in step 35, and based on the constraint relationship determined in steps 36 to 38. It constitutes a figure converting means 7 for enlarging or reducing figures.

〔Effect of the invention〕

As described in detail above, according to the present invention, the constraint relationship between figures belonging to the same group is determined, and the figures are enlarged or reduced based on this constraint relationship. Therefore, there is no need to modify and rewrite figures belonging to the same group so that they have the same constraint relationship, and it is possible to significantly shorten the work involved in converting figures. Therefore, it becomes possible to perform editing in accordance with human intentions, making it effective as a graphic editing system for word processors, desktop publishing, and the like.

[Brief Description of the Drawings] Fig. 1 is a block diagram showing the configuration of a figure editing system according to an embodiment of the present invention, Fig. 2 is a diagram showing an example of figure editing in the figure editing system of this embodiment, and Fig. 3 is a flowchart showing the operation. First factor 1 --- Display device 2 --- Mouse 3
1.1. - Figure selection control unit 4 - - Figure data management unit 5 Drawing control unit 6 - Constraint relationship determining means 7 Figure conversion means 8 - - Display memory. Patent applicant Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] (1) A figure editing system that creates a desired figure by combining a plurality of figure elements, comprising a figure data management unit that holds figure data including figure types and grouped figure information; a display memory that holds data to be displayed based on the display; a display device that displays the graphic information held in the display memory; a graphic selection unit that selects a graphic to be converted that is displayed by the display device; Constraint relationship determining means for determining a constraint relationship by reading figure data of a specified figure and other figures belonging to the group when converting a group of grouped figures, and figures in the same group as the selected figure. A graphic editing system comprising: a graphic converting means for enlarging or reducing the image based on the constraint relationship determined by the constraint relationship determining means.