JPH01191271A - Sector input method - Google Patents

Abstract

PURPOSE:To input the sector of a position and a form (curvature) intended by an implementor by providing a means for displaying an auxiliary line for deciding the center position of the sector passing through two points and a means for moving and setting a center to a designated position, temporarily displaying the sector passing through a designated coordinate point, moving the center and changing a form. CONSTITUTION:A means for setting the start point A of the sector and the end point B of the sector, the means for displaying the auxiliary line for deciding the central position of the sector passing through the two points, and the means for displaying the center of the sector and the means for moving and setting the center to the designated are provided to temporarily display the sector, move the center and change the form. Namely, at the time of forming the sector, after the input of the start point A and the end point B, the auxiliary line is displayed on a middle point connecting the two points to move the center on the auxiliary line and form the sector of the form (curvature) intended by the implementor for temporarily constantly temporarily displaying the sector. Thereby, an operability at the time of inputting the sector is improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a graphic drawing function method.

[Conventional technology]

In the conventional fan-shaped input method, as shown in the Hitachi Word Processor BW-1000 manual, the creator specifies the start point A, end point B, and center by eye, and then the device calculates the positional relationship between the start point A, end point B, and center. The fan shape was created by correcting the angles and center positions of the starting point A and end point B necessary for fan-shaped display.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the fan shape intended by the creator may differ from the fan shape information created by the system, and the fan shape intended by the creator may not be drawn.

The purpose of the present invention is to display an auxiliary line on the midpoint connecting the two points after inputting a starting point A and an end point when creating a fan shape, so that the center can be moved on the auxiliary line, and to temporarily display the fan shape at any time. To,
An object of the present invention is to provide a sector-shaped input method that facilitates the creation of a sector-shaped sector having the shape (curvature) intended by the creator.

[Means to solve the problem]

means for setting a starting point A and an end point B of a fan shape, means for displaying an auxiliary line for determining the center position of the fan shape passing through the two points, means for displaying the center of the fan shape, and moving the center to a specified position. This is achieved by temporarily displaying a fan shape passing through the designated coordinate point and changing the shape as the center moves.

[Effect]

When creating a fan shape, after inputting the starting point A and the end point, an auxiliary line is displayed on the midpoint connecting the two points, and the center can be moved on the auxiliary line, and the fan shape can be temporarily displayed at any time. You can create a sector of the desired shape (curvature).

This improves the operability during fan-shaped input.

〔Example〕

The present invention will be explained in detail below. As shown in FIG. 2, the present invention comprises an input section 10 using a keyboard or the like for inputting characters, coordinates, etc., a display section 11 such as a CRT display for displaying figures, etc., and a memory for storing designated coordinate points, etc. part 12, a control part 13 for controlling each of the above parts;
Consisted of.

The control unit 13 further includes a fan-shaped input control unit 14 that creates a fan-shaped figure, and a cursor control unit 15 that changes the coordinate position using cursor keys or the like.

Next, a method for creating a fan shape in the apparatus comprising the above mechanism will be explained using the flowchart shown in FIG.

First, the creator moves the cursor to the starting point A of the fan shape using the cursor keys, and presses the execution key at that position.

Similarly, after moving to the end point B, the start point A and end point B of the sector are determined by pressing the execution key.

(Step 110) Next, a center position determination auxiliary line is displayed according to the input starting point A and ending point B.

(Step 111) The center position determination auxiliary line (hereinafter referred to as the auxiliary line) is a line for determining the center position of the fan shape that will be created from now on.
As shown in a), this is the normal line to the line segment connecting the starting point A and the ending point B (the line segment that is perpendicular to the input line segment between the two points and passes through the midpoint).

Next, click the third button to display the cursor on the determined midpoint.
(see figure (b)), and the starting point A.

Temporarily display a sector that passes through the end point B and is centered at the cursor position (
(See FIG. 4(c): Two types of sector shapes are temporarily displayed).

(Steps 112, 113) Next, the input from the creator is determined, and if it is a cursor key input (Steps 114, 115), the center is moved on the auxiliary line and the fan shape is changed to the creator's input. Change it to the desired shape.

(Steps 112, 113, 116) For example, if you move the cursor upward, the image shown in Fig. 4(d)
When the cursor is moved downward, the fan-shaped display becomes as shown in FIG. 5(e).

On the other hand, if the execution key was manually operated, the operation moves to a fan-shaped shape selection operation centered on the current cursor position.

Step 116 will now be described in detail with reference to FIGS. 8, 9, and the previous figures.

Figure 8 is a coordinate system in which the right and bottom directions are the positive directions of the X and Y axes, respectively, and ■ is an auxiliary line indicating a negative slope, ■
is an auxiliary line indicating a positive slope.

In addition, Fig. 9 distinguishes between the types of cursor keys, that is, the input of the up, down, left, and right keys, and the slope of the auxiliary line, and moves the cursor position (X, Y) in the positive direction (+ direction) or the negative direction (one This is a decision table for moving in the direction).

Here, I will explain specifically how to move the cursor.
Figure 8 (■) shows that when the up or left key is input using the cursor keys, refer to Figure 9 and move the X coordinate point of the cursor position in the positive direction (+) and the Y coordinate point in the negative direction (-). move each. As a result, the cursor moves upward on the auxiliary line.

When the down key or left key is input, the X coordinate point of the cursor position is moved in the negative direction and the Y coordinate point of the cursor position is moved in the positive direction, respectively, referring to FIG. 9 in the same manner as described above. As a result, the cursor moves downward in the opposite direction to the above cursor.

Similarly to FIG. 8, the cursor is moved upward on the auxiliary line when the up key or the left key is input, and it is moved downward when the down key or right key is input.

Next, the method for selecting a fan shape will be explained. There are two types of fan shapes that can be selected.

(1) Fan-shaped display (n
) A fan-shaped display clockwise from the end point B to the start point A. Then,
In explaining the operation method, the creator inputs the cursor key or execution key as described above (step 117).
, 118).

In the case of cursor key input, the cursor is moved in the same manner as the cursor movement described above (step 119), and the cursor is moved to the position where the cursor is the intersection (A1°A2) of the displayed auxiliary line and the fan-shaped arc.

For example, if you move the cursor to the arc you want to create, the fifth
Move the cursor key to the intersection A1 of the displayed auxiliary line and arc as shown in Figure (f).

Also, as shown in Figure 6, if you move the cursor in the opposite direction, the intersection point A
Move the cursor to 2.

On the other hand, when the execution key is input, a fan-shaped selection is performed according to the cursor position at that time.

(Step 120) The last submerged starting point A, ending point B, and center are set as the size, the cursor and auxiliary lines are erased, and a fan-shaped display is performed.

The display results are shown below.

FIG. 7(h) shows a fan-shaped display when the above-mentioned (I) is selected (step 121).

FIG. 7(i) shows a fan-shaped display when the above-mentioned (II) is selected (step 122).

〔Effect of the invention〕

It is possible to input the fan shape with the position and shape (curvature) intended by the creator with a simple operation.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing fan-shaped input processing, FIG. 2 is a block diagram showing the configuration of a device to which the present invention can be applied, FIGS. 3 to 7 are diagrams showing display examples according to the input procedure, and FIG. A diagram showing the moving direction of the cursor key, FIG. 9 is a diagram for determining the moving direction of the cursor key. DESCRIPTION OF SYMBOLS 10... Input part, 11... Display part, 12... Storage part, 13... Control part, 14... Fan-shaped input control part, 1
5... Cursor control section. Figure 1 Figure 2N Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Scope of Claims] 1. A graphic creation device comprising an input section for inputting characters, coordinates, etc., a storage section for storing the input data, and a display section for displaying the input data, comprising: a fan-shaped drawing starting point A; , means for setting a drawing end point B;
means for displaying an auxiliary line for determining the center position of the fan shape passing through the two points, means for displaying the center of the fan shape, and means for moving and setting the center at a specified position, A sector input method characterized by temporarily displaying a sector passing through a point and changing the shape as the center moves. 2. In claim 1, after determining the center position,
A fan shape starting from the drawing starting point A clockwise to the finger drawing ending point B,
A fan-shaped input method comprising means for selecting one of two fan-shaped figures extending clockwise from a drawing end point B to a drawing start point A.