JPH07121736A - Graphic preparing device - Google Patents

Abstract

PURPOSE:To designate a coordinate by retrieval and to smoothly perform that operation. CONSTITUTION:Concerning an inputted graphic 25, any arbitrary area inside a picture such as an area surrounding the line terminal of the inputted graphic 25, for example, is designated by a mouse, when the area designating operation is performed, a specified graphic point coordinate (z) of the inputted graphic 25 included in a designated area A is retrieved, and a cursor 24 is moved to the retrieved specified graphic point coordinate (z).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic creating apparatus, and more particularly to an operation for designating coordinates in such a graphic creating apparatus.

[0002]

2. Description of the Related Art Conventionally, an operation of designating coordinates on a graphic is often performed in order to specify the position and size of the graphic when the graphic is created or transformed.

To specify such coordinates, (1) a method of specifying arbitrary coordinates on the figure, and (2) directly specifying an arbitrary point on the figure that has already been input, and then a search function There is a method to search for the line end of a straight line, the center of a circle, etc., and specify the coordinates.

[0004]

However, the conventional figure creating apparatus has the first type that can only specify arbitrary coordinates of (1), or both functions of (1) and (2), The operation is divided into the second type, which has completely different operations in (1) and (2). In the case of the first type, it is inconvenient to align straight lines with each other and to draw concentric circles. The second type allows arbitrary coordinate designation on a graphic and coordinate designation by a search, but has a drawback that the operation becomes complicated.

An object of the present invention is to make it possible to specify coordinates by retrieval and to perform the operation smoothly.

[0006]

Means for Solving the Problems The means of the first invention is as follows. The area designating means designates an arbitrary area on the screen with respect to the already input graphic. The graphic point coordinate search means searches for a specific graphic point coordinate of an already input graphic included in the specified area when an area specifying operation is performed. The cursor moving means moves the cursor to the searched specific graphic point coordinates. The means of the second invention are as follows. The arbitrary coordinate designation means designates the coordinate of an arbitrary point on the already-input graphic on the screen. The area designating means designates an arbitrary area within the screen regarding the already-input graphic. The coordinate detecting means detects an arbitrary coordinate designation operation as a designated point of a figure, and when an area designation operation is performed, the coordinate of a particular figure included in the area in the already inputted figure is determined. A search is performed and the coordinates are detected as the designated point of the figure.

[0007]

The operation of the means of the first invention is as follows. When an arbitrary area on the screen is designated with respect to the already-input graphic by the area designating means, specific figure point coordinates of the already-input figure included in the designated area are searched by the figure point coordinate searching means, and the cursor moving means Move the cursor to the coordinates of the particular figure point retrieved by. The operation of the means of the second invention is as follows.
When the arbitrary coordinate designating operation is performed by the arbitrary coordinate designating means, the coordinate detecting means detects the coordinate as a designating point of the figure, and when the area designating operation is performed by the area designating means, the coordinate detecting means detects the coordinate in the already input figure. Then, the coordinates of a specific graphic point included in the area are searched to detect the coordinates as a designated point of the graphic.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing the configuration of a graphic creating apparatus according to an embodiment of the present invention. In the figure, reference numeral 10 is a CPU that performs overall control. Reference numeral 12 is a key input unit composed of a keyboard provided with execution, cursor movement, and other function keys, and an operation signal generated by the user operating any of these keys is input to the CPU 10. Reference numeral 14 is a mouse as a pointing device, and the user can move a cursor, which will be described later, to an arbitrary position on the screen by moving the mouse.

Reference numeral 16 is a figure editing section in which the user operates the key input section 12 and mouse 14 to create and edit figure data, and 18 is a figure in which the figure data created by the figure editing section 16 is saved. It is a memory. The graphic data is composed of graphic type data and coordinate data, and the graphic memory 18 includes a graphic type storage area 18A for storing these in association with each other and a coordinate storage area 18B.

A display memory 20 stores the display data displayed on the display unit 22 in a dot pattern, and converts the graphic data stored in the graphic memory 18 into an image and stores the image.

FIG. 2 is a diagram showing an example of a screen display on the display unit 22 of the graphic creating apparatus, in which the graphic being created is displayed. In the figure, the cursor 24 can be moved to arbitrary coordinates on the figure by operating a key from the key input unit 12 or the mouse 14.

A method of operating the mouse 14 to specify coordinates according to this embodiment will be described below. First, the arbitrary coordinate designation for designating the coordinate of an arbitrary point on the already input graphic on the screen will be described.

In this case, the mouse 14 is operated to move the cursor 24 so that the cursor 24 is moved to the coordinates to be designated on the already input graphic, and then the button of the mouse 14 is clicked, that is, the button is pressed and immediately released. By this operation, the designated coordinates are detected as the pointing point of the figure.

Next, referring to FIGS. 3 (a) and 3 (b), the area designation for designating an arbitrary area on the screen with respect to the already input graphic will be described.

In this case, as shown in FIG. 3 (a), the line end of the already-input figure 25 is pushed with the mouse button pressed at a position related to the already-input figure 25, for example, the starting point x. After moving the cursor 24 to the end point y so as to surround it, release the button. By this operation, a rectangular search area A whose diagonal is the start point x and the end point y is designated. Then, the specific figure point coordinates of the already input figure 25 included in the designated area A, here the line edge coordinates z, are searched and detected as the designated point of the figure. After this, as shown in FIG. 3B, the cursor 24 is moved to this position by the CPU 10.

As is apparent from the above-mentioned cursor moving operation, this embodiment can easily perform arbitrary one-point coordinate designation and area designation as needed.

FIG. 5 is a diagram in which coordinates to be searched for various figures are represented by black circles. As shown in the same figure, (1) line ends and centers, (2) rectangle vertices and centers, (3) polygon vertices, and (4) circle centers can be considered as search targets.

Further, FIG. 4 shows a rectangle 26 (FIG. 5A) and a circle 27 (FIG.
(C)), a combination of an ellipse and a circle 28 (Fig. 5 (e))
With respect to, a specific figure point coordinate on the figure searched when an arbitrary area A is designated is shown. In this case, as is clear from FIGS. 5 (b), (d), and (f),
The apex of the rectangle, the center of the circle, and the intersection of the ellipse and the circle are searched for, and the cursor 24 is moved to this position.

The process of retrieving the figure point coordinates after the coordinate designation operation will be described below with reference to FIGS. 6 and 7.

First, in step S1, the mouse 14
The position coordinates of the cursor 24 when the button of
(X position in (a)), that is, the position coordinate when the button is on is x
_on, as well as substituted into y _on, the position coordinates of the cursor 24 when releasing the button of the mouse 14 (y position of FIG. 3 (a)), i.e., the position coordinates of at button off x _off, y
Substitute in _off .

Next, in step S2, x _on = x
_It is determined whether it is _off and y _on = y _off , that is, whether the coordinates when the button is pressed and the coordinates when the button is released match. If YES in step S2, it is determined that the arbitrary coordinates are designated, and the coordinates at that time are set as the determined coordinates p _x and p _y (step S6).

On the other hand, if step S2 is NO, it is judged that the area search is designated, the coordinate search (described later) shown in FIG. 7 is performed, and the area is included in the area in the already input graphic 25. A specific graphic point coordinate (for example, the position of z in FIG. 3) is searched (step S3).

Next, in step S4, it is judged whether or not there is a coordinate detected by the above search, and if there is, the coordinate is determined as the determined coordinate p _x , p _y (step S5),
If not, it is judged that there is no figure in the area,
Determine the coordinates x _on , y _on when the button is pressed Coordinates p _x , p _y
(Step S6).

The coordinate retrieval process in step S3 of FIG. 6 will be described below with reference to the flowchart of FIG.

First, it is determined whether or not n is greater than 0, where n is the total number of figures searched for in the area (step ST
1, ST2). If NO in step ST2, it is determined that there is no figure to be detected, and the process ends. On the other hand, if YES in step ST2, the data in the graphic memory 18 is checked to determine the type of graphic (step ST3). Next, it is determined whether or not a search point exists in a specified area for a specific figure, for example, a straight line (step ST4). If it is determined that there is determined whether a particular graphic point coordinates have been detected, when it is detected that the coordinate determination coordinate p _x, and p _y (S4, S
5).

On the other hand, if it is determined that the search point does not exist, n is decremented by 1 (step ST8), and the existence of a search point is determined for the next figure, for example, a rectangle or a circle (steps ST5 and ST6).

As described above, the graphic creating apparatus according to the present embodiment is capable of enclosing an arbitrary area in the screen with respect to the already-inputted figure (25 in FIG. 3), for example, an area surrounding the line end or center of the already-inputted figure 25. Area designating means (mouse 14, CPU 1
0, cursor 24), and when there is an area designation operation,
An already-input figure 25 included in the designated area (A in FIG. 3)
3 is provided with graphic point coordinate search means (CPU 10) for searching the specific graphic point coordinates (z in FIG. 3) and cursor moving means (CPU 10) for moving the cursor 24 to the searched specific graphic point coordinate z. . As a result, the specific figure point coordinates of the already-input figure can be searched by designating the area, so that operability is improved and accurate drawing can be created.

Further, the figure creating apparatus of the present embodiment has an arbitrary coordinate designating means (mouse 14, CPU 1) for designating the coordinates of an arbitrary point on the already entered figure (25 in FIG. 3) on the screen.
0, the cursor 24) and an arbitrary area in the screen regarding the already-inputted figure 25, for example, an area specifying means (mouse 14,
The CPU 10 and the cursor 24) and, when an arbitrary coordinate designating operation is performed, the coordinate is detected as a designated point of the graphic, and when the area designating operation is performed, a specific graphic included in the area in the input graphic 25. A coordinate detecting means (CPU 10) is provided for searching point coordinates (z in FIG. 3) and detecting the coordinates as a designated point of a figure. As a result, by operating the mouse 14, it becomes possible to easily specify the arbitrary one-point coordinate designation and the area designation as needed.

Although the mouse 14 is used to specify the coordinates in the above-described embodiment, the cursor key of the key input unit 12 or the like can be used.

[0031]

According to the present invention, the specific figure point coordinates of the already input figure can be searched by designating the area, so that the operability is improved and the accurate drawing can be created.

Further, it is possible to easily specify the arbitrary one-point coordinate designation and the area designation properly.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a screen display example.

FIG. 3 is a diagram for explaining a method of designating an arbitrary area within a screen for an already input graphic.

FIG. 4 is a diagram showing graphic point coordinates searched for by specifying an area for various graphics.

FIG. 5 is a diagram showing coordinates to be searched for various figures.

FIG. 6 is a diagram showing a coordinate determination step after a coordinate designation operation.

FIG. 7 is a diagram showing a coordinate search process in step S3 of FIG.

[Explanation of symbols]

10 ... CPU, 12 ... Key input section, 14 ... Mouse, 16
… Graphic editor, 18… Graphic memory, 20… Display memory,
22 ... Display section.

Claims (2)

[Claims] 1. An area designating means for designating an arbitrary area within a screen with respect to an already-input graphic, and a specific graphic point coordinate of an already-input graphic included in the specified area when an area designating operation is performed. And a cursor moving means for moving the cursor to the searched specific graphic point coordinates. 2. An arbitrary coordinate designating means for designating a coordinate of an arbitrary point on an already-input graphic on the screen, an area designating means for designating an arbitrary area on the screen for the already-input graphic, and an arbitrary coordinate designating operation. If there is, the coordinates are detected as the designated point of the figure, and if there is an area designation operation, the specific figure point coordinates included in the area in the already input figure are searched and the coordinates are designated as the designated point of the figure. And a coordinate detecting means for detecting as.