JPH0486953A - Length calculator - Google Patents

Abstract

PURPOSE:To exactly calculate the length of a route between two points by moving a pointer from the starting point of a graphic to be displayed, calculating the length of the route moved to the terminal point, and converting the calculated length to an actual length based on a scale to be inputted. CONSTITUTION:A length calculator 22 interrupts a CPU 14 when clicking the button of a mouse 12 or moving the mouse 12 to a mouse control device 13. When the right and left buttons of the mouse 12 are clicked until the release of the interruption is received from the CPU 14, the device 13 writes the clicked contents in a status register 15a of an event storage register 15 and generates interruption in the CPU 14. The CPU 14 announces the generation of mouse interruption to a mouse cursor control device 19. The device 19 reads contents from the register 15 through the CPU 14. When the event stored in the register 15a is a click event, the device 19 stores only the contents of the mask state of the register 15a in a mouse cursor control table 20.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a processing device such as a computer, and particularly relates to a length calculation device that calculates the length of a path between two points specified on the screen of a display device. .

[Summary of the Invention] The length calculation device of the present invention is, for example, a computer-aided computer (CAD).
This is a device that is installed in a processing device for graphics created by GN) and can easily calculate the length of an arbitrary route connecting two predetermined points on the screen of the CRT or the like. In other words, CR
If you want to use it to find the length of a route from the current point to the destination point on the map depicted on the T's screen, move the cursor along the route on the map and you will see the distance from the starting point to the destination point. During the movement period to the destination point, the amount of movement of the cursor in the X and Y axis directions is read once per predetermined unit time, and the length of the section is calculated and added sequentially, until the destination point is reached. Then, the sum of the sections up to that point can be converted to the actual length of the journey and output.

[Prior Art] Generally, a processing device such as a computer can display a map read by an image scanner or the like on the screen of a display device such as a CRT. When determining the length between any two points on the map, the distance was measured using the scale displayed on the screen as a guide.

FIG. 4 shows a map read by an image scanner displayed on a CRT in a computer device.

If we calculate the length of the route from start point A to destination B, the route from start point A to destination B includes the first route of start point A-e-g-destination B. Start point A-e-f-h-second destination B
Two routes are possible. If you try to measure and compare these by visual measurement using the scale scale smd displayed on the screen as a guide, it is difficult to measure the length of the curved path between fh of the second route by visual measurement, so it is difficult to measure accurately. I can only compare it with the first route to determine the length of the route.

[Problem to be solved by the invention] In this way, with visual measurement as described above, if there is a curve or a complicatedly curved path between two points, it is difficult to obtain an accurate length, and it is difficult to measure accurately. I can't do anything.

The cause of this is the linear scale s displayed at the corner of the screen.
This is because the only method available was to visually calculate a curved route based on md.

An object of the present invention is to display arbitrary two images displayed on the screen of a display device.
The purpose is to be able to determine the exact length of a path between points.

[Means to solve the problem] The means of the present invention are as follows.

(2) Display means 1 (see the functional block diagram of FIG. 1; the same applies hereinafter) displays a figure for length calculation and a pointer indicating an arbitrary position on the screen.

2) The pointer moving means 2 continuously moves the pointer on the screen from an arbitrary starting point to an arbitrary ending point on the graphic.

3) The scale input means 3 inputs the scale of the figure on the screen.

4) The calculating means 4 calculates the length of the distance traveled by the pointer as the pointer moving means 2 moves the pointer.

5) The conversion means 5 converts the length of the road calculated by the calculation means 4 into an actual length based on the scale input by the scale input means 3.

[Effect] The operation of the means of the invention is as follows.

When a pointer, for example, a mouse cursor, is moved by the pointer moving means 2 from an arbitrary starting point of the figure displayed on the display means 1, the calculating means 4 calculates the length of the distance traveled to the end point, and the converting means 5 calculates the length of the distance traveled to the end point. , the length is converted into an actual length based on the scale input from the scale input means 3.

Therefore, the exact length of the path between any two points displayed on the screen of the display device can be determined.

[Embodiment] Hereinafter, a description will be given with reference to the block diagram of FIG. 2 showing the configuration of an embodiment of the length calculation device of the present invention.

The configuration of this length calculation device is as follows: First, a central processing (hereinafter referred to as CPU) 14 receives each human power signal. The human power signal inputted from the mouse 12 is sent to the CPU 14 and the CRT control device 17, which will be described later.
The image is processed, and a pointer (for example, an arrow-shaped mouse cursor as shown in FIG. 4) is displayed on the screen of the CRT 18 as shown in FIG.

Then, the movement state of the mouse 12 for each unit time is transmitted from the mouse control device 13 to the event storage register 15.
The mouse movement ff1 (dx, dy) at that time is stored in the tatus register 15a as dx.

The data is stored in the dY registers 15b and 15c.

At the same time, the mouse control device] 3 generates an interrupt to the CPU 14.

The CPU 14 includes a bit builder (BITBLD) 1 that creates display data for the mouse cursor 1 based on mouse cursor position information from a mouse cursor control table 20 via a mouse cursor control device 19, which will be described later.
6 are connected. That is, the bit builder 16 also transfers image information from an image reader (not shown) to the CP.
The map display data including the mouse cursor 1 is created from this image information and the mouse cursor signal information. This display data is stored in the CRT control device 1.
7 and displayed on the CRT 18.

The CPU 14 also includes a mouse cursor control device 19.
The mouse cursor control device 19 reads the contents of the event storage register 15 via the CPU 14, and stores the new position to which the mouse cursor 1 is to be moved in the mouse cursor control table 20 at any time.

That is, the mouse cursor control device 19 reads out the movement jt (dx, dy) that changes over time, and converts it into a conversion formula defined by application software stored in the application memory 21, which will be described later: dispX - dispX + f ( dx)
-(1) dispY -dispY 10f (dy
) − Based on (2), mouse cursor i
Display position information (crispX, di
spY). This display position information is stored in the dispX register 20 of the mouse cursor control table 20.
b, stored in the dispY register 20c. Further, the mouse cursor control device 19 includes the bit builder 16
This new disp shows the display position of the mouse cursor i.
By supplying the contents of the X register 20b and the djspY register 20c, the CRT
A mouse cursor i is drawn at the position 18 on the screen.

Furthermore, an application memory 21 that stores application software such as a length calculation processing method, and a length calculation device 22 that calculates the path length between two points designated by the mouse cursor 1 are connected to the CPU 14. , the length calculation device 22 is an application memory 21
The length of the route drawn by the mouse cursor 1 is calculated based on the application software stored in the mouse cursor 1.

Next, the length calculation operation in the apparatus configured as described above will be explained.

First, the user uses an image scanner or the like to read a map and display it on the CRT 18, and then gives an instruction to calculate the route length using a keyboard or the like.

In response to this instruction, length calculation is started according to the calculation procedure stored in the application memory 21.

The length calculation device 22 then instructs the mouse control device 13 to generate an interrupt to the CPU 14 when a button on the mouse 12 is clicked or when the mouse 12 is moved.

Until the mouse control device 13 receives an interrupt release instruction from the CPU 14, when either the left or right button of the mouse 12 is clicked, the mouse control device 13 stores the event memory register 1.
The clicked content (mouse status) is written into the status register 15a of No. 5, and an interrupt is generated in the CPU 14. Similarly, if the user moves the mouse 2 during that period, the fact that the mouse 12 is moved at a rate of once per predetermined unit time during that movement period is written in the 5tatus register 15a of the event storage register 15. Further, the mouse control device 13 inputs the movement amount generated by the movement of the mouse 12 into an X-direction movement amount signal dx to a dx register 15b, and an X-direction movement amount signal ay to a dx register 15b.
is written to the dy register 15c, causing the CPU 14 to generate an interrupt.

When the CPU 14 receives these interrupts, it notifies the mouse cursor control device 19 that a mouse interrupt has occurred. The notified mouse cursor control device reads the above-mentioned contents from the event storage register 15 via the CPU 14.

Next, the mouse cursor control device 19 selects the 5tatus register 15 if the event stored in the 5tatus register 15a is a click event in the read content.
Only the contents of the mouse state of a are stored in the mouse cursor control table 20. However, if it is a stored event or a movement event, the contents of the mouse state of the 5tatuS register 15a and the movement it (dx, dy) are converted by the CPU 14 based on the conversion formulas (1) and (2) described above. The converted signals (dispX, djspY) are stored in the 5tatus register 20a and the dispX register 20b, dj of the mouse cursor control table 20.
Each is stored in the spY register 20c.

Next, the mouse cursor control device 11 sends the conversion signal (dispX) to the bit builder 16.

The mouse cursor l is instructed to be displayed on the screen at a new movement position based on dispY ). In response to this instruction, the bit builder] 6 displays the mouse cursor i on the map drawn on the screen of the CRT 18 via the CRT control device 17.

Furthermore, the mouse cursor control device 19
14, an interrupt is generated in the length calculation device 22.

Next, the length calculation device 22 uses the CPU 14. Mouse cursor control table 20 via mouse cursor control device 19
Read the value of each register.

Furthermore, the scale s on the CRT 18, which serves as a reference for length.
md is read into the length calculation device by clicking the mouse 12 button twice.

Keyphoto 10 the actual distance corresponding to that scale.
By inputting from , the distance traveled by the mouse cursor 1 becomes able to calculate the distance corresponding to the actual distance traveled.

Next, after setting the mouse cursor i to the starting point A displayed on the CRT 18 in FIG. 4 mentioned above, click the left button. By this click, the length calculation device 22
receives an interrupt and displays the mouse cursor control table 20 again.
The value of each register is read from , and the starting point A is determined.

Then, by drawing the mouse cursor i along the route on the map and adding the sequentially calculated lengths, it is possible to calculate the relative actual The length of can be calculated.

Then, the length calculating device 22 returns the calculated route length to the application memory 21 and stores it as data.

Next, the process of calculating the path length by the length calculating device 22 will be explained with reference to the flowchart in FIG.

Here, for the coordinate positions, reference numbers written on the CRT display screen in FIG. 4 are referred to.

The length calculation device 22, which has been instructed to calculate the path length, sends the mouse 1 to the mouse control device 13.
When the button No. 2 is clicked or the mouse 12 is moved, the CPU 14 instructs the length calculation device 22 to perform an interrupt, and processes the length calculation device 22 so that the mouse interrupt can be performed (step Sl). After the processing, the on/off state of the end flag is determined (step S2). If the end flag is in the ON state (Y) in this determination, the calculated actual route length is sent to the application memory 21 (step S3), and the length calculation process is completed. However, if the end flag is off (N), the process enters a standby state until the next interrupt is instructed (step S4).

Next, the mouse cursor control device 12 is instructed that a new mouse interrupt has occurred (step S5), and it is determined whether it is a stored event (step S5).
6) At this point, when it is determined that the event is a click of the left button of the mouse 12, the scale scale that is displayed on the CRT 18 and becomes the reference distance for calculating the route length is read.

The coordinates (SX,
SY) has been determined (step S7).

Here, the initial values of coordinates (SX, SY) are (SX--1, 5
Y--1). Therefore, it is only necessary to determine whether they are "-1" or not.

In addition, if the start position coordinates (SX, SY) have not been determined (N), place the mouse cursor on one side of the scale displayed on the CRT 18 and convert it to a conversion signal (dispXdjspY) corresponding to this position coordinate. After that, it is stored in the mouse cursor control table 20 (step S8). Then, this converted signal (dispX,
dispY ) is stored in the SX register (step S9) and SY register (step 510) of the length calculation device 22. As a result, the start position coordinates (SX,
SY) is determined, the process returns to step S2 to determine the end flag, and after being determined to be in the off state (N), the state enters the standby state in step S4.

Also, in step S7, the coordinates (SX) of the start position are determined.

If SY) has also been determined (Y), then the coordinates of the other end position of the scale (EX).

Determine whether EY) has been determined (step 511)
. Here, the initial values of the coordinates (EX, EY) are (EX--1,
EY--1). Therefore, it is only necessary to determine whether they are "-1" or not.

If the end position coordinates (EX, EY) have not yet been determined (N), new conversion signals (dispX, cNs
pY) is stored in the mouse cursor control tickle 20 (step 512).

Then, a new conversion signal (dispX, dis
pY ) is stored in register EX (step 813) and register EY (step 514) of the length calculation device 22.

Then, manually input the actual distance m corresponding to the reduced scale obtained in steps S7 to S14 (step 515), and input it into the register 5cale.
The formula for calculating the actual distance in meters (m) that one dot on 18 corresponds to is """(SX-EX)" + (SY-
A coefficient is calculated based on EY)'"" 3) (step 516). Thereafter, the process returns to step S2 to determine the end flag, and after being determined to be in the off state (N), the process enters the standby state in step S4. Furthermore, if the coordinates (EX, EY) of the end position have been determined in step SIO (Y), it is determined whether the coordinates (X, Y) of the starting point A to be measured have been determined (step 517 ). Here the coordinates (
The initial values of X,, Y) are (X--1, Y--1).

Therefore, it is only necessary to determine whether they are "-1" or not.

Furthermore, if the coordinates (X, Y) of the start point A have not been determined (N), a new conversion signal (djspX, di
spY) is stored in the mouse cursor control table 20. Then, this new conversion signal (dispX, d
ispY ) is stored in the X register (step 818) and Y register (step 519) of the length calculation device 22. After this storage, the process returns to the end flag determination in step S2, and after that determination, the process enters a standby state in step S4.

Also, the coordinates of the end position (EX,
EY) has been determined (Y), step S2
Returning to the end flag determination in step S4, after determining the off state (N), the process enters the standby state of step S4.

Through the above processing, the coordinates of the start position (SX, SY) and the end position coordinates (EX) of the reduced scale are set.

EY), the coefficient for calculating the actual length of the calculated route length, and the coordinates of the starting point A to be measured (
x, y) are determined.

Next, when the user starts moving the mouse 12 from the starting point A toward the destination point, a new mouse interrupt occurs, and the determination in step S6 determines that the mouse interrupt is a movement event. Then, the process moves to the next step S20.

In this step S20, it is determined whether the setting of the previously processed scale and the coordinates (X, Y) of the starting point A is completed. Here, the initial value of the coordinates (X, Y) is (X--1
, , Y--1).

Therefore, it is only necessary to determine whether they are "-1" or not.

In the determination of step S20, if the scale and the coordinates (X, Y) of the starting point A have not yet been determined (N), the process returns to step S2 to determine the end flag, and the off state is determined (N). After that, it enters a standby state in step S4. However, if the starting point A has been determined in this judgment (Y), when the user moves the mouse from the starting point to the destination point (step 521), the predetermined unit time during the movement period of the mouse 12 The amount of movement (dx, dy) of the mouse 12 is read at a rate of once per time, and a conversion signal (dispX) is obtained from this.

dispY) is obtained. This conversion signal (dispX
.

dispY ) and the coordinates (X, Y) of the starting point A using the following formula, it "1 + (X-dispX)2+(Y -
dispY)2(N; path length on CRT) (4) When calculated by substituting the following, the path length g from starting point A to position C is calculated (step 522).

After that, with position C (Xa, Ya) as a new starting point, the X register (step 823) and the Y register (
Step 524) is updated, and the movement amount (dx, dy) from here to the mouse movement point (position D) specified in the next predetermined unit time is similarly substituted into equation (4), and the position C The length g of the section from (Xa, Ya) to the next position D (Xb, Yb) is calculated. By adding these lengths in sequence and repeating the same calculation, when the mouse cursor reaches the destination point B, the total length g of the journey from the start point A to the destination point B is calculated.

After the calculation, return to step S2 to determine the end flag,
After being determined to be in the off state (N), the step S4 enters a standby state.

Next, the end flag is turned on when the user clicks the right button of the mouse. At the same time, a new mouse interrupt occurs, and the process moves to step S6, where a mouse interrupt event is determined.

This event is determined to be the third event end flag turned on (step 525), and is stored in the register 5cale obtained in step 516 in addition to the total path length g calculated in step S23. The calculated road length Ω is converted into an actual road length corresponding to the calculated road length Ω by multiplying the coefficients (step 526), and the process returns to step S2 to determine the end flag.

In this determination, the end flag is already in the on state (Y
), the calculated actual route length is sent to the application memory 21 (step S3),
Complete the length calculation process.

As explained above, in the embodiment, by moving the mouse cursor to draw an arbitrary route connecting two predetermined points on the map displayed on the screen of CR and T, the The amount of movement (dx, dy) of the mouse cursor is read at a rate of one time, the distance from the start point to the destination point is divided into several parts and the length of each path is measured, and the length of each path is sequentially added up until the destination point is reached. When the vehicle reaches the point, the distance traveled between the two points is calculated and converted to the actual distance, allowing accurate measurement of the distance.

Note that if there are several routes from the start point to the destination point, the lengths of the routes can be easily compared by measuring the length of each route.

In addition, various other modifications and applications are possible, for example,
In addition to the distance between two points on a map read by an image reader, computer aided
It can also be applied to calculating the length between two points in a pipeline created using GN) or an IC wiring pattern.

Further, in the above embodiments, various pointing device input devices can be used, such as a keyboard cursor key, track port, or touch panel for specifying with a finger.

[Effects of the Invention] According to the present invention, a route connecting any two points can be calculated on the screen of a display device or the like. Therefore, the exact length of any route between two points displayed on the screen of the display device can be determined, and even curved or complicatedly curved routes can be determined easily and accurately.

[Brief explanation of drawings]

Fig. 1 is a functional block diagram of the present invention, Fig. 2 is a block diagram showing the configuration of a length calculation device according to an embodiment, and Fig. 3 is a flowchart for explaining the operation of the length calculation device shown in Fig. 2. , FIG. 4 is a map depicted on a display device. 1... Display means, 2... Pointer moving means, 3...
- Scale input means, 4... calculation means, 5... conversion means. Applicant Casio Computer Co., Ltd. RT

Claims (1)

[Scope of Claims] Display means for displaying a length calculation figure and a pointer indicating an arbitrary position on a screen, the pointer being directed from an arbitrary start point to an arbitrary end point on the figure on the screen. a pointer moving means for moving the figure; a scale input means for inputting a scale of the figure on the screen; a calculation means for calculating the length of the path traveled by the pointer as the pointer is moved by the pointer moving means; A length calculation device comprising: conversion means for converting the length of the route calculated by the calculation means into an actual length based on the inputted scale.