JPH08202341A - Graphic editing device - Google Patents

Abstract

PURPOSE: To enable a user to display plural display positions of graphics easily and correctly by making the specified display position of a graphic change in accordance with the display position of another graphic. CONSTITUTION: A moving destination coordinate selecting means 16 retrieves graphic data in a graphic data storage part 21 and the coordinates in a feature point storage part 23 by the coordinates specified by an input device 11 and sets the feature point being nearest to the specified coordinates to the moving destination coordinates in graphic movement information. In the case of moving a graphic, a controller 18 calculates the moving amount of the graphic by the moving objective point of the graphic movement information and the moving destination coordinates to change the reference point of graphic data corresponding to a moving graphic number among graphic data by the calculated moving amount. Moreover, the controller changes the feature point in graphic data and replots the graphic on a display 12 by the graphic data after the change. In the case of forming the graphic newly, the controller prepares the graphic newly by making the moving destination coordinates an input coordinates for preparing the graphic.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic editing apparatus which is a word processor, a DTP or the like and has a function of creating and editing a graphic such as a straight line, a rectangle or a circle.

[0002]

2. Description of the Related Art In a conventional graphic editing apparatus, the position of a graphic is designated by inputting coordinates by a keyboard or by inputting a position on a display by a pointing device such as a mouse.

In addition, grid points at specific intervals are defined on the display,
The coordinates of the figure can also be specified by specifying the grid points. According to this, for example, the graphic can be created by aligning the upper left coordinates and the lower right coordinates of the rectangle, the center of the circle, and the like with the grid points. Furthermore, when the rectangle is moved, the upper left coordinate of the rectangle is corrected to the coordinate of the grid point and moved, so that the rectangle can be moved to an accurate position.

[0004]

However, in the conventional graphic editing apparatus, it was possible to accurately specify the position of each graphic, but no consideration was given to the case of combining a plurality of graphics. It was for that reason,
For example, to align the upper left coordinate of a rectangle with the lower right coordinate of another rectangle as shown in FIG. 10 or to align the center of a circle with the lower right coordinate of a rectangle, the operator calculates the coordinate value of each point each time, Since it is necessary to directly input the obtained coordinate values, there is a problem that the operation is troublesome.

Therefore, it is an object of the present invention to provide a graphic editing apparatus capable of easily and accurately specifying the position of a plurality of graphics.

[0006]

A graphic editing apparatus of the present invention comprises a storage means for storing graphic data relating to a graphic such as a straight line, a circle and a rectangle, and a display means for displaying the graphic relating to the graphic data stored in the storage means. And a means for designating the first graphic and the second graphic displayed on the display means, and a means for changing the display position of the first graphic according to the display position of the second graphic.

[0007]

With the above arrangement, the display position of the designated graphic is changed according to the display position of another graphic. This allows the user to easily and accurately indicate the display positions of the plurality of figures.

[0008]

First, the outline of the present invention will be described.

According to the present invention, the coordinates of the figure are corrected by correcting the source coordinates to the nearby destination coordinates. There are the following types of source coordinates and destination coordinates to be corrected.

Source coordinates-Coordinates by an input device such as a mouse-Coordinates of feature points of the figure (center coordinates of the figure, coordinates of vertices) Destination coordinates-Coordinates of feature points of the figure (center coordinates of the figure, vertex coordinates)- Intersections of figures and figures ・ Lattice points By correcting the source coordinates as described above to the destination coordinates, it is possible to specify accurate positions with simple operations when creating new figures, dividing figures, or moving figures. It becomes possible.

For example, when a new rectangle is created, if the upper left and lower right coordinates of the rectangle are specified by an input device such as a mouse, the two coordinates are respectively set as the movement source coordinates and the characteristic points of the neighboring figures are set. And create a new figure by correcting it to the coordinates of the movement destination such as the intersection of figures and figures. Alternatively, if the dividing position when dividing a figure is specified with an input device such as a mouse, the coordinates are used as the movement source coordinates and correction is performed to the characteristic points of the figure in the vicinity or the intersections of the figure and the figure to perform division. . Alternatively, when the figure is moved, the characteristic point of the figure to be moved is used as the movement source coordinate, and the figure is moved by correcting it to the movement destination coordinate such as the characteristic point of another figure or the intersection of the figure and the figure.

Further, regarding the movement of the figure, means for selecting one feature point from a plurality of feature points of the movement source is also provided. For example, when a rectangle is moved, if an input device such as a mouse is used to indicate the vicinity of the upper right corner of the rectangle and move the rectangle, the upper right coordinates of the rectangle can be corrected to the destination coordinates.

Examples of the present invention will be described below. FIG. 1 is a block diagram of a graphic editing apparatus according to an embodiment of the present invention, in which 1 is a CPU, 2 is a display such as a CRT or liquid crystal, 3 is a mouse, 4 is a keyboard, 5 is a ROM for storing programs and the like, 6 is a main memory, 7
Is a display memory.

FIG. 2 is a functional block diagram of the graphic editing apparatus according to the embodiment of the present invention. 11 is an input device such as a mouse for inputting coordinates and the like, and 12 is a display for displaying a graphic. A device, 13 is a figure selecting means for selecting a figure, 14 is a characteristic point selecting means for selecting a feature point such as vertex coordinates or center coordinates from the selected figure, and 15 is an intersection point calculation for calculating an intersection point between figures. The means 16 searches for a feature point such as the center or apex of the figure in the vicinity of the coordinates designated by the input device 11 and selects the point closest to the designated coordinates among the feature points as the destination coordinate. The destination coordinate selection means, 18 is a control device for controlling the entire graphic editing device, and 19 is a storage device having a graphic data storage unit 21, a graphic movement information storage unit 22, and a feature point storage unit 23.

As shown in FIG. 3, the graphic data storage unit 21 stores data (graphic data) about a graphic created and edited by the graphic editing apparatus. The figure data includes the figure number added in the order in which the figure is created, the figure type such as a straight line, a rectangle, and a circle, the upper left vertex of the rectangle, the center coordinates of the circle, and the start point of the straight line. It is composed of information such as width and height, radius of circle, length of straight line, figure size such as end point, coordinate of feature point when moving figure.

Further, the graphic movement information storage unit 22 stores graphic movement information as shown in FIG. The figure movement information has a movement figure number for which the figure number of the movement target figure is specified, a movement target point which is a reference of movement when moving the figure, and a movement destination coordinate which is a movement destination of the movement target point. is there. However, in the case of newly creating a figure, the coordinates by an input device such as a mouse are corrected, so that a non-existing figure number such as -1 is set as the moving figure number.

The figure selection means 13 searches the figure data of the figure to be moved in the figure data storage section 21 based on the coordinates input from the input device 11, and finds the corresponding figure number. Set to the moving figure number of. or,
In the case of moving the figure, the feature point selecting means 14 inputs the input device 11 with respect to the figure selected by the figure selecting means 13.
The feature point closest to the coordinates input from is obtained from the figure data and set as the movement target point of the figure movement information.

The intersection calculation means 15 calculates the intersection of the figures designated by the input device 11 and stores the coordinates of the intersection in the feature point storage unit 23. The feature point storage unit 23 stores an intersection coordinate sequence.

The destination coordinate selection means 16 is an input device 11.
The coordinates of the graphic data in the graphic data storage unit 21 and the coordinates of the feature point storage unit 23 are searched by the designated coordinates, and the feature point closest to the designated coordinates is set as the movement destination coordinate in the graphic movement information.

In the case of moving a figure, the control device 18 calculates the amount of movement of the figure based on the movement target point of the figure movement information and the coordinates of the movement destination. Change the reference point of the corresponding graphic data. Further, the characteristic points in the graphic data are also changed, and the graphic is redrawn on the display device 12 by the changed graphic data.
In the case of creating a new figure, a new figure is created by using the movement destination coordinates as input coordinates for creating the figure.

With respect to the graphic editing apparatus of this embodiment having the above-described structure, the operation of moving a graphic will be described with reference to the flowchart of FIG.

Now, it is assumed that graphic data as shown in FIG. 3 is stored in the main storage device 6 and that the display 2 displays rectangles, polygons and circles as shown in FIG.

First, when a point on the display 2 is designated by the mouse 3 (step 1), in the graphic data stored in the main memory 6, the point designated in step 1 is displayed on the graphic boundary line, or The internal graphic is searched and the graphic number of the corresponding graphic is stored in the main storage device 6 as the moving graphic number of the graphic moving information (step 2).

Next, of the characteristic point coordinates of the figure corresponding to the moving figure number, the characteristic point coordinate closest to the point designated in step 1 is set as the movement target point of the figure movement information (step 3). .

Here, when a point on the display 2 is designated again by the mouse 3 as the movement destination of the figure (step 4), the figure data in the main memory 6 is designated by the point designated in step 4. The figure is searched, and the feature point coordinates or the intersection point coordinates closest to the designated point in the figure data of the corresponding figure are set as the movement destination coordinates of the figure movement information (step 5).

When the destination point and the destination coordinates are obtained as described above, the moving amount of the figure (the moving direction and the moving amount in each of the horizontal and vertical directions) is calculated from these two points (step 6). ). Then, it is determined whether or not this movement amount is within a preset allowable range (step 7), and if it is within the allowable range, the mouse cursor is momentarily changed to notify the user that the adsorption has succeeded (step 7). 8). Further, the reference point of the figure data corresponding to the moved figure number is changed by this moving amount (step 9), and the changed figure data is used to redraw the figure in the display memory 7 and display it in the display 2. (Step 10).

In the case of the figure illustrated in FIG. 5, when the point Q1 or the point Q2 is designated as the movement target, the movement figure number is "1", the movement target point is the point C0, and the movement destination coordinate as shown in FIG. Is the point E0 (step 1 to step 5). And
The movement amount of the figure is calculated from the points E0 and C0, and the reference point “A0” in the figure data corresponding to the rectangle to be moved is calculated.
Is "A1", and the feature point coordinates are "A0", "B0", and "C".
"0", "D0", and "T0" are "A1", "B1", and "E0"
It is changed to "D1" and "T1" (step 6 to step 9), and the rectangle is attracted to the triangle as shown in FIG. 6 (step 10).

Next, the operation of dividing a figure will be described with reference to FIGS. 8 and 9 by taking a straight line as an example.

When the point Q3 on the display 2 is designated by the mouse 3 in advance with the straight line S0S1 selected (step 21), the figure number of the straight line S0S1 is set as the moving figure number, and the vicinity of the point Q3 is set. Two graphic rectangles U and a straight line S0S1 are selected (step 2
2). Next, the intersections S2, S of the straight line S0S1 and the figure rectangle U
3 is calculated and stored in the feature point storage unit 23 (step 2
3), the intersection S2 closest to the point Q3 is set as a movement target point, and the straight line S0S1 is set to be divided by S2 (step 24). Then, new figure data (straight line) is set with the reference point (start point) as the intersection point S2 and the figure size (end point, length) as the length of the end points S1 and S2S1 of the straight line S0S1 (step 25). A new end point S2 and length S0S2 are added to the figure size in the figure data of S0S1.
Is set (step 26). Thus the straight line S0S1
Is the two straight lines S0S due to the intersection S2 with the figure rectangle U.
2 and a straight line S2S1. In the case of newly creating a figure, the position can be similarly corrected by correcting the coordinates by the input device such as the mouse to the coordinates of the movement destination.

[0030]

According to the present invention, a figure can be easily moved with reference to the feature points of another figure, so that efficient work can be performed when a design combining a plurality of figures is created.

[Brief description of drawings]

FIG. 1 is a block diagram of a graphic editing apparatus according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of a graphic editing device according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of graphic data according to an embodiment of the present invention.

FIG. 4 is a configuration diagram of graphic movement information according to an embodiment of the present invention.

FIG. 5 is a diagram showing a display example according to an embodiment of the present invention.

FIG. 6 is a diagram showing a display example according to an embodiment of the present invention.

FIG. 7 is a flowchart of a figure moving process according to an embodiment of the present invention.

FIG. 8 is a diagram showing a display example according to an embodiment of the present invention.

FIG. 9 is a flowchart of figure division processing according to an embodiment of the present invention.

FIG. 10 is a diagram showing an example of displaying a figure in a conventional figure editing apparatus.

[Explanation of symbols]

 11 input device 12 display device 13 graphic selection means 14 feature point selection means 15 intersection calculation means 16 destination coordinate selection means 18 control device 19 storage device 21 graphic data storage unit 22 graphic movement information storage unit

Claims (1)

[Claims] 1. A storage means for storing graphic data regarding a graphic such as a straight line, a circle, a rectangle, a display means for displaying a graphic regarding graphic data stored in the storage means, and a first display displayed on the display means. Means for designating the second graphic and the display position of the second graphic according to the display position of the first graphic.
And a means for changing the display position of the figure, the figure editing apparatus.