JPH0527875B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a position display device for creating figures on a display or the like.

[Technical background of the invention and its problems]

In recent years, word processors that can handle graphics have been developed, and it has become possible to handle graphics in documents in the same way as characters. When drawing figures on a display device such as a display to create this document, a widely used method is to display equidistant lattice points called a grid on the display. For example, when drawing a line segment with the same length as a line segment already displayed on the screen at a different position, the editor counts the length of the line segment that has already been drawn using the number of points on the grid and remembers it. The usual method is to count the points on the grid from the end point of the line you are trying to draw, and then indicate the other end point at the same value you memorized. FIGS. 1 and 2 are diagrams showing an example of creating a figure using a grid on a display screen.

Line segment P ₃ P ₄ and line segment P ₁ P ₂ (not shown in Figure 1)
Complete the figure shown in Figure 2 by specifying point P ₄ so that the lines are parallel, and the line segments P ₂ P ₄ and P ₁ P ₃ are parallel. At this time, the editor counts the number of points on the grid to measure the distance from P ₁ to P ₃ and knows that it is 3 to the right and 8 to the top and remembers this. Then, I counted 3 to the right of P ₂ and 8 to the top to determine the position of P ₄ . As is clear from this example, when the length of the line segment is long, it is difficult for the editor to count the number of grids, and it is necessary to re-count several times to avoid mistakes. In other words, the conventional method requires a lot of time and effort from the editor.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus that facilitates the creation of a figure by displaying the distance between two points constituting the figure when inputting a figure to be displayed on a display.

[Summary of the invention]

In the present invention, when displaying a figure on a display,
Input the coordinate data and commands of the points that make up this figure from an input device such as a tablet, use this command to specify the desired position coordinates as the origin, calculate the distance between the subsequently input position coordinates and the origin,
The value is displayed on the display device.

〔Effect of the invention〕

According to the present invention, since the distance between points on the display screen is automatically displayed, the burden on the operator when creating a figure is significantly reduced.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 3 is an overall configuration diagram of this embodiment. Reference numeral 1 denotes an input unit consisting of a tablet, a keyboard, etc., through which position coordinates and commands are input. The position coordinates and command data inputted from the input section 1 are sent to the command determination section 2. This command determination unit 2 determines whether the input data is a position coordinate or a command, and if it is a command specifying the origin, the first position coordinate input following the command is stored as the origin in the origin position storage unit 3. be remembered. If the input data is a second position coordinate input subsequent to the first position coordinate, this position coordinate is sent to the position calculation section 4. The position calculation unit 4 retrieves the first position coordinate value stored as the origin coordinate from the origin position storage unit 3, and extracts the value of the first position coordinate stored as the origin coordinate from the origin position storage unit 3, and extracts the second position coordinate value sent from the command determination unit 2.
is subtracted from the position coordinate value of , and the resulting value is sent to the position display unit 5. On the other hand, the second position coordinate data sent to the command determination section 2 is sent to the display 6 together with the first position coordinate data sent to the origin position storage section 3, and the position coordinate point is displayed. The position display unit 5 displays the value sent from the position calculation unit 4, for example, the distance between the first and second position coordinate points displayed on the display 6 in the x direction and the y direction.
The direction is distinguished and this coordinate value is displayed. This position display section 5 may be a section of the display 6, so the editor compares the displayed position on the display 6 with the coordinate values on the position display section 5 and uses a tablet or the like to draw a line segment with an accurate distance. can be drawn.

FIG. 4 is a diagram showing the control flow of this embodiment. In FIG. 4, first, the origin position storage section 3 is initialized to return it to its initial state (step 11).
Furthermore, a control flag CoM for specifying whether or not the origin point command is input when position coordinates are input is set to zero (step 12). Next, the command determination unit 2 accepts the input of position coordinates or commands (step 13), and in the case of the input of the origin instruction command, CoM=1, that is, when inputting the position coordinates later, following the input of the origin instruction command. Make it possible to judge what is being done (steps)
14). If a position is input when CoM=1, that is, immediately after the origin instruction command is input, the input position coordinates are written into the origin position storage section 3 (step 15). Additionally, if a position is input with CoM=0, the position calculation unit 4 calculates the distance from the position coordinate (origin) written in the origin position storage unit 3 to the position coordinate input with CoM=0, and displays the position. Display in section 5 (step 16).

Next, the operation when an editor actually creates a figure on the display according to this embodiment will be explained using FIGS. 1 and 2. Using the grid in Figure 1, specify point P ₄ on the already created figure and set P ₃
By connecting P ₄ and P ₂ and P ₄ , the figure shown in Figure 2 is completed. As shown in Figure 2, the line segment connecting P ₃ and P ₄ is parallel to the line segment connecting P ₁ and P ₂ , and the line segment connecting P ₂ and P ₄
The line segment connecting P ₁ and P ₃ is created so that it is parallel to the line segment connecting P 1 and P 3. In this embodiment, it is assumed that the position coordinates to be input are moved and displayed on the display using a cursor. First, the editor inputs an origin specifying command from a tablet or the like, moves the cursor to _P1 indicated by the grid on the display, specifies the position, and sets the origin as _P1 . Next, when the cursor is moved, the grid coordinates of the cursor display position from the origin _P1 are displayed, for example, on a position display section provided in one section of the display. Then move the cursor to P ₃ and the origin P ₁
The grid coordinates (3,8) from (0,0) are displayed and the editor remembers this value. Furthermore, input the origin specification command again, move the cursor to P ₂ , and set the origin position to P ₂ . Next, when the cursor is moved, the grid coordinates from the origin P ₂ (0, 0) are displayed one after another, so the editor can determine the position of P ₄ by finding the grid that is (3, 8).

Note that the present invention is not limited to the above embodiments. For example, it is not necessary to display a grid on the display, and it is possible to use a predetermined unit such as 1 cm =
The position coordinates may be displayed as one unit. Further, the origin specification command may not be provided, and in this case, the origin may be changed each time a position is specified. Furthermore, when displaying position coordinates, x coordinate, y
In addition to displaying the coordinates, the distance from the origin may be displayed, and the position coordinates may be displayed not in a fixed area on the display, but for example, directly above the specified point, It may be displayed at several locations on the display. In short, the present invention can be implemented with various modifications without departing from the gist thereof.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams showing an example of creating a figure using a grid, Figure 3 is an overall configuration diagram of an embodiment of the present invention, and Figure 4 is a control flow diagram of an embodiment of the present invention. FIG. DESCRIPTION OF SYMBOLS 1...Input part, 2...Command judgment part, 3...Origin position storage part, 4...Position calculation part, 5...Position display part, 6
...display.

Claims (1)

[Claims] 1. An input section for inputting position coordinates and command data, a command determination section that determines whether the data input from this input section is an origin specification command, and a command determination section that determines whether the data input from this input section is an origin specification command. If it is determined, an origin position storage section that stores the first position coordinates input after this command is input from the input section as the first position coordinates indicating the origin, and an origin is set in this origin position storage section. If the data is determined to be position coordinates by the command determining unit after the data has been determined, this data is supplied as the second position coordinates, and a relative value from the value of the origin coordinates stored in the origin position storage unit to the second position coordinates is supplied. What is claimed is: 1. A position display device comprising: a position calculation unit that calculates a position, and a position display unit that displays a relative value obtained from the position calculation unit.