JPH05150757A - Display device for coordinate value - Google Patents

Abstract

PURPOSE:To display coordinate values nearby a cursor without disordering a drawn figure by using exclusive OR arithmetic when the coordinate values are displayed. CONSTITUTION:Data in a window 1 which is changed as a result of a display of the coordinate values and coordinate value data are exclusively ORed to display the coordinate values. Then the data 6 in the window which is changed when the coordinate values are displayed again before the movement of the cursor 5 or drawing is restored to its original display. Thus, the coordinate values 7 are displayed in the window 1, displayed on the display of a computer 2, at a data part 6 which is changed when the cursor 5 and coordinate values are displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display such as a computer for drawing graphics.

[0002]

2. Description of the Related Art There have been some which display coordinate values at a predetermined position on a display or provide a scale at the edge of the screen.

[0003]

However, in the above-mentioned two kinds of display methods, it is necessary to alternately see the coordinate value and the cursor or the coordinate value and the scale when drawing the figure accurately. It was impossible to continue inputting for a long time because it was necessary to concentrate on the nerve because the display position of or was separated from the cursor position and the display position of the scale. In addition, since a dedicated display area is required, valuable display space is lost.

Therefore, it is desired that the cursor and the display of the coordinate value are close to each other.

[0005]

In order to solve the above-mentioned problems, the coordinate value display device of the present invention has a means for preventing the information on the display from being lost when the coordinate values are displayed, and a device for displaying the coordinate values near the cursor position. It is provided with means for displaying coordinate values and means for restoring the state of the display to the state before displaying the coordinate values before moving the cursor or drawing a figure.

[0006]

According to the present invention, a figure can be accurately input with almost no movement of the viewpoint.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the appearance of a computer for inputting a graphic equipped with a coordinate value display device of the present invention. In FIG. 1, 1 is a window displayed on a display (hereinafter, a window is used instead of the display. Yes) 2
Is a computer main body, 3 is a keyboard, and 4 is a mouse. 5 is a cursor displayed in the window, 6
Indicates the data portion of the window which is changed when the coordinate value is displayed, and 7 indicates the displayed coordinate value of the present invention.

FIG. 2 shows an internal block diagram of a computer equipped with the coordinate value display device of the present invention. 8 is a CPU for controlling the whole, 9 is a memory for storing data and programs, and 10 is a secondary storage. Device, 11 is a keyboard interface, 12 is a mouse interface,
13 is a display interface and a video memory, and 14 is an address and data bus.

In FIG. 3, the data of the window which is changed by displaying the coordinate value is copied and saved, the coordinate value is displayed, and the saved data is restored before moving the cursor or drawing. It is a flowchart in the case.

FIG. 4 shows the coordinate value by performing an exclusive OR operation of the coordinate data and the data of the window which is changed by displaying the coordinate value and displays the coordinate value again before moving the cursor or drawing. 9 is a flowchart in the case of performing an exclusive OR operation of the window data changed by displaying the coordinate value and the coordinate value data to restore the window data.

Next, a detailed description will be given of a case where the window data is copied and saved, the coordinate values are displayed, and the saved window data is restored before moving the cursor or drawing.

First, the preconditions will be described. 1 of FIG.
In the window indicated by, the upper left is the origin (0, 0), the value of x increases toward the right, and the value at the right end is wrx. Further, the value of y increases as it goes downward, and the value at the lower end is wby. Therefore, the lower right corner of the window is (wr
x, wby). The current position of the cursor shown by 5 in FIG. 1 is (nPx, nPy), and the previous position is (oP
x, oPy). Further, the position of the data in the window which is changed by the display of the coordinate values shown by 6 in FIG. 1 is shifted from the cursor position by (ax, ay) in the lower right direction. This is also the value to shift from the cursor position when displaying the coordinate values. Further, the data portion 6 of the window which is changed when the coordinate values are displayed has a length in the x direction of cx,
The length in the y direction is represented by cy.

Next, a description will be given according to the flowchart of FIG. At 15, the current position of the mouse in the x direction is assigned to nPx, and the position of the y direction is assigned to nPy. At 16 the previous mouse position (oPx, oPy) and the current mouse position (nP
x, nPy) are compared, and if they match, the process returns to 15 and the current mouse position is substituted again. If they do not match, 17 is used to determine fC. fC is a flag for determining whether the coordinate value has already been displayed or has not been displayed yet. Since the coordinate value is not displayed initially, 0
It has become. If the coordinate values are already displayed and fC
When is 1, the position of the previous mouse at 18 (oPx,
(oPy) and the relative position (Zx, Zy) of the display of the coordinate value with respect to the cursor, the position of the vector sum (oPx + Zx,
The original window data copied and saved at 29 in (oPy + Zy) is returned to the window again. Then, the coordinate value display flag fC is reset to zero. Then proceed to 20. However, if fC is 0 at 17, it means that the coordinate values have not been displayed.

At 20, it is possible to draw a figure or the like that changes according to the movement of the mouse. Here, you can freely select the operation depending on the application. Even when drawing is performed irrespective of the movement of the mouse, the display of the coordinate values is eliminated and the drawing can be freely performed by performing only the processing of 17 to 19 described above. For example, the place to move from 16 to 17 is WM in WINDOWS of Microsoft. MOU
Although it corresponds to the semove message, other messages can be drawn by the operating system or drawn by a program by performing the processing from 17 to 19.

At 21, the value nPx of the new mouse in the x direction
And a value obtained by subtracting the length cx in the x direction for displaying the coordinate value from the value wrx in the x direction at the right end of the window and the value ax in the x direction for shifting the display position of the coordinate value from the cursor position, If it is larger, the process proceeds to 22 and the x-direction length cx for displaying the coordinate value in the x-direction value of the relative position of the coordinate value display with respect to the cursor and the x-direction value for shifting the display position of the coordinate value from the cursor position. Ax and ax are added with negative signs and summed and substituted. As a result, the coordinate value is displayed on the left side of the cursor.

If the result of comparison in 21 is not large, proceed to 23 and shift the display position of the x-direction value nPx of the new mouse and the x-direction length cx for displaying the coordinate value and the coordinate value from the cursor position. Compare the sum with the value ax in the x direction, and if it is smaller, go to 24 and set the value ax in the x direction that shifts the display position of the coordinate value from the cursor position to the value zx in the x position of the relative position of the coordinate value display with respect to the cursor. substitute.
As a result, the coordinate value is displayed on the right side of the cursor.

If the result of comparison in 23 is not small, the coordinate value display is in the middle of the window, and the coordinate value display is not clipped in the window regardless of whether it is on the right side or the left side of the cursor. Therefore, when it is displayed on the right side, it remains on the right side, and when it is displayed on the left side, it remains on the left side, and the coordinate value is displayed as it is on the left side. This makes it possible to provide a hysteresis characteristic, and avoid an unnatural operation in which the display position of the coordinate value rolls every time the cursor crosses a certain boundary line.

At 25, the value nPy in the y direction of the new mouse
Is compared with the value wby at the lower end of the window, which is the length in the y direction for displaying the coordinate value and the value ay for shifting the display position of the coordinate value from the position of the cursor. The y-direction length cy for displaying the coordinate value in the y-direction value Zy of the relative position of the coordinate value display position with respect to and the y-direction value ay for shifting the coordinate value display position from the cursor position are negative. Add the sign and sum and substitute. As a result, the coordinate value is displayed above the cursor.

If the result of comparison in 25 is not large, the process proceeds to 27, in which the position nPy of the new mouse in the y direction and the y direction length cy for displaying the coordinate value and the display position of the coordinate value are shifted from the cursor position. The sum with the value ay in the y direction is compared, and if smaller, the process proceeds to 28 and the value ay for shifting the display position of the coordinate value from the position of the cursor is substituted for the value Zy in the y direction of the relative position of the display of the coordinate value with respect to the cursor. As a result, the coordinate value is displayed below the cursor.

If the result of comparison in 27 is not small, the coordinate value display is in the middle of the window, and the coordinate value display is not clipped in the window either above or below the cursor. Therefore, when it is displayed on the lower side, it remains at the lower side, and when it is displayed on the upper side, it remains at the upper side, so that the coordinate value is displayed without changing the y-direction value Zy of the relative position with respect to the cursor. .. This makes it possible to provide a hysteresis characteristic, and avoid an unnatural operation in which the display position of the coordinate value rolls every time the cursor crosses a certain boundary line.

At 29, a new cursor position (nPx,
nPy) and the vector sum (nPx + Zx, nPy +) of the relative position (Zx, Zy) of the display of the coordinate value with respect to the cursor.
Zy) length c in the x direction for displaying the coordinate value at the position
The data in the rectangular window indicated by the length cy in the x and y directions is copied and saved.

At 30, a new cursor position (nPx,
nPy) and the vector sum (nPx + Zx, nPy +) of the relative position (Zx, Zy) of the display of the coordinate value with respect to the cursor.
The coordinate value of the figure is displayed at the position Zy). In the case of a two-dimensional figure, two coordinate values are displayed, and in the case of a three-dimensional figure, three coordinate values are displayed. This value can be freely selected by the application. Of course, it is also possible to display the position of the cursor as it is.

At 31, the flag fC indicating that the coordinate value is displayed is set to 1, and at 32, the value of the previous mouse coordinate value (oPx, oPy) is set to the new mouse coordinate value (nP).
x, nPy). The above is the method of displaying the coordinate values in the method of copying and saving the data of the window which is subject to change when the coordinate values shown in the flowchart of FIG. 3 are displayed.

Next, a flow chart of a method of performing an exclusive OR operation between the data of the window which is changed when the coordinate values are displayed and the display data of the coordinate values shown in FIG. 4 will be described.

Although it is almost the same as that of FIG. 3, since the exclusive OR operation is used when displaying the coordinate value, the information on the display is not lost even if the coordinate value is directly displayed on the display, so that the information is stored in another place. No need to save. Therefore, the data stored at 18 in FIG. 3 is returned to the window at 36 in FIG. 4 again at the same position (oPx, o).
Py) is subjected to an exclusive OR operation and 29 in FIG. 3 is where the window data is copied and saved and the coordinate value is displayed at 30. The exclusive OR operation is directly performed at 47 in FIG. The display is different.

[0026]

As described above, according to the present invention,
Coordinate values can be displayed near the cursor without disturbing the drawn figure, and the relative display position with respect to the cursor can be changed so as not to be clipped in the window. Since a hysteresis effect can be provided so that the value does not change, the cursor and coordinate values can be viewed without moving the viewpoint, and a figure can be input for a long time. It also allows more valuable window area to be used.

[Brief description of drawings]

FIG. 1 is an external view of a computer including a coordinate value display device to which the present invention is applied.

FIG. 2 is an internal block diagram of a computer including a coordinate value display device to which the present invention is applied.

FIG. 3 is a flow chart of a method of displaying coordinate values, which is a method of copying and saving data in a window which is changed when the coordinate values are displayed.

FIG. 4 is a flowchart of a method of displaying coordinate values by performing an exclusive OR operation with data in a window which changes when the coordinate values are displayed.

[Explanation of symbols]

1 Window displayed on the display 2 Computer body 3 Keyboard 4 Mouse 5 Cursor 6 Window data that changes when coordinate values are displayed 7 Coordinate value display

Claims (4)

[Claims] 1. A means for preventing the display information from being lost when a coordinate value is displayed, a means for displaying a plane or space coordinate value in the vicinity of the cursor position, and before moving the cursor position or drawing a figure. And a means for restoring the state of the display to the state before displaying the coordinate values. 2. A means for copying and saving display data which is subject to change by displaying coordinate values, a means for displaying coordinate values in the vicinity of the cursor position, and before moving the cursor position or drawing a figure. 2. The coordinate value display device according to claim 1, further comprising means for copying the previously stored data to the original position of the display. 3. A means for displaying a coordinate value by performing an exclusive OR operation between the data of the display subject to change by displaying the coordinate value and the display data of the coordinate value,
Before moving the cursor position or drawing a figure, the apparatus further comprises means for performing an exclusive OR operation between the display data whose coordinate values have been changed and which has been changed and the display data of the coordinate values. Display device for coordinate values according to claim 1. 4. The display of coordinate values according to claim 1, wherein the relative position with respect to the cursor is changed to a position not hidden when the coordinate value is hidden outside the window depending on the position of the cursor. apparatus