JPH01142921A - Mouse type input device - Google Patents

Abstract

PURPOSE:To improve the operability by omitting graphic generation software on a computer side and drawing a graphic form consisting of a straight line system such as horizontal lines and slanting lines by processing which colors picture elements with cursor coordinate values. CONSTITUTION:The mouse type input device consists of an XY moving distance measuring means 1, a cursor moving direction fixation mode setting and resetting means 2, a cursor moving direction specifying means 3, a cursor coordinate calculating means 4, a data transfer means 5, and a display processor 6. Then the initial coordinate values of a cursor are sent from the data transfer means 5 to the display processor 6 and the cursor is displayed on it. Said setting and resetting means 2 and specifying means 3 are operated to set current cursor coordinates X and Y, X- and Y-axial deviations from the reference point on the device side are set to zero, and the coordinates are stored in a data area in a calculating means 4. Consequently, a straight-line graphic form is drawn beautifully freehand.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mouse-type input device used when designing figures and characters on a display device such as a CRT.

(Prior art and its problems) A mouse-type input device is originally a pointing device that indicates a specific area or point on a display device such as a CRT. It is also used as a drawing device for designing. When designing figures and characters using a mouse-type input device, the basic method is a free-hand drawing method in which moving the mouse freehand moves a cursor on the display device and colors the pixels that the cursor passes through. However, with this method, it is difficult to use linear drawings often used in design, such as horizontal lines, vertical lines, diagonal lines, frames, and polygons, in a clean manner.

To solve this problem, conventionally, the computer side
Prepare software that generates shapes such as vertical lines, diagonal lines, frames, polygons, etc. and a command selection menu screen to start it. After selecting the command when drawing, use the mouse type input device to select the starting point.

A command selection method is used to specify a feature point such as an end point.

However, the above command selection method has a problem in that graphic generation software and command selection menus must be created on the computer side.

Therefore, the present invention eliminates such conventional problems and
A mouse that can neatly draw straight-line figures with free hand operation, as shown in Figure 6, by simply coloring the pixels of the received cursor coordinate values without preparing any special figure generation software on the computer side. The purpose is to provide a type input device.

(Means for Solving the Problems) Means provided by the present invention to solve the above-mentioned problems is to connect to a display processing device and generate coordinate data of a cursor to be displayed on the display surface of the display processing device. and a mouse-type input device for inputting the coordinate data into the display processing device, the display processing being connected to an a cursor movement direction fixed mode setting/cancellation means for setting whether or not to fix the movement direction of the cursor on the device; and when the cursor movement direction fixed mode is set by the cursor movement direction fixed mode setting/cancellation means; a cursor movement direction specifying means for specifying a cursor movement direction;
cursor coordinate calculation means for calculating the X and Y coordinates of the cursor from the movement distance in the X-axis direction and the Y-axis direction measured by the XY movement distance measurement means and the cursor movement direction specified by the cursor movement direction specification means; and data transfer means for transferring the cursor coordinates calculated by the cursor coordinate calculation means to the display processing device.

(Principle of the Invention) In order to keep the moving direction of the cursor constant, the increment in the X-axis direction and the increment in the Y-axis direction of the cursor may be kept at a constant ratio. In other words, if the increments of movement of the cursor in the X-axis direction and Y-axis direction are ΔX and ΔY, respectively, and θ is the cursor movement direction, then ΔY=ΔX−tanθ or ΔX=
The other can be generated by multiplying either the increment in the X-axis direction or the increment in the Y-axis direction by a constant, as expressed by the equation ΔY-coto. By the way, the movement of the mouse-type input device and the movement of the cursor are proportional, so
If the movement increments of the mouse-type input device are ΔX, Δy, and the movement increments of the cursor are ΔX, ΔY, then, with k being a constant, the following relationships hold: ΔX - Δx/k, ΔY=Δy/, and from ΔX or Δy, ΔX and ΔY can be determined. However, since a display device such as a CRT is composed of a finite number of pixels, if the above process is performed by changing the reference point for each minute movement increment detected by the mouse-type input device, rounding down and rounding up will occur, causing the cursor to does not move in the desired direction. Therefore, a method is used in which reference points xo and yo are set and the deviation in one axis direction from the reference points is calculated based on the deviation in one axis direction. In general, the measurement accuracy of the moving distance of a mouse-type input device is higher than the resolution on the display device, so to prevent the accumulation of errors, calculations using the moving distance of the mouse-type input device , Y is X−X0+(ΣΔx)/k.

Y=YO+tanθ・(ΣΔx)/k−(1) or Y−YO+(ΣΔy)/k.

X = X O+cotθ・(ΣΔy)/k −(2
) can be calculated using the formula.

If you always use the calculation formula (1) with the X direction as the reference, in the range of 45° <θ < 135@, as shown in Figure 7, when you try to draw a straight line, the dots will be continuous. It may disappear. Therefore, Ooku θ<45@ and 135
In the range of °〈θ〈180°, the formula (1) is changed to 45
In the range @<θ<135°, calculation formula (2) shall be used.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention. XY
As shown in FIG. 2, the movement distance measuring means 1 includes a tracking ball 7 and an XY
This can be realized by something like the direction rotation detection mechanism 8. The cursor movement direction fixed mode setting/cancelling means 2 is comprised of a fixed mode setting button 9 and a fixed mode canceling button 10, as shown in FIG. 3, and is located above the mouse type input device 11.

As shown in FIG. 3, the cursor movement direction specifying means 3
It is a dial-shaped thing located at the top of the mouse-type input device 11 that rotates left and right, and controls the cursor movement direction from 0 degrees to 18 degrees.
It can be set at any angle between 0 degrees.

The cursor coordinate calculation means 4 is a CPU as shown in FIG.
12, a processing program 13, and a data area 14. The data transfer means 5 can be implemented by something like a conventional mouse interface board. The display processing device 6 connected to this device can be realized by a CPU, a VRAM, and a CRtC'.

The flow of processing will be explained using the flowchart of FIG.

First, the initial coordinate values of the cursor are sent from the data transfer means 5 to the display processing device 6, and the cursor is displayed on the display processing device 6 (SL).Next, the cursor moving direction fixed mode setting/cancelling means 2 and The cursor movement direction specifying means 3 is operated (B2). In B2, when the cursor moving direction fixed mode setting button 9 is pressed, a flag is set in the data area 14 in the cursor coordinate calculation means 4, and the cursor moving direction fixed mode is set (B
3) At the same time, the current cursor coordinates X, Y are set as the reference point data xo, yo on the display processing device 6 where the cursor movement direction fixed mode starts, and the X axis from the reference point on the mouse type input device side is set. direction, deviation Σ in Y-axis direction
Set ΔX and ΣΔy to zero and store them in the data area 14 in the cursor coordinate calculating means 4. After the flag in the data area 14 in the coordinate calculation means 4 is reset and the cursor moving direction fixed mode is canceled (SIO), proceed to Sll. At B2, press the cursor moving direction fixed mode setting button 9° Cursor moving direction fixed mode If neither of the release buttons 10 is pressed, if the cursor movement direction fixed mode is set, B
Proceed to 1, if not set, proceed to Sll,
In B1, when the cursor movement direction is newly set by the cursor movement direction specifying means 3 in B2, the cursor movement direction θ is stored in the data area 14 in the cursor coordinate calculation means 4, and at the same time, the same standard as in B4 is stored. Reset the point data and proceed from (B5) to 86, while S
If the cursor movement direction is not newly set in step 2, proceed directly to B6. In B6, when the present mouse type input device 11 is moved, the data area 14 in the cursor coordinate calculation means 4 is moved from the XY movement distance measuring means 1. The moving distances ΔX and Δy in the X-axis direction and Y-axis direction are sent to and stored (S7). Next, the processing program 13 in the cursor coordinate calculation means 4 calculates a cursor coordinate value using the data in the data area 14 (B8). The cursor coordinate values X and Y are as follows, where k is the conversion coefficient between the coordinate system of the display processing device and the coordinate system of the mouse-type input device.
In the range X=XO+(ΣΔx)/k.

Y=YO+tanθ・(ΣΔx)/k Also, in the range where θ is 45° and θ<135°, Y=YO+
(ΣΔy)/k.

It is calculated using the formula: X=XO+coto・(ΣΔy)/. The data transfer means 5 transfers the obtained cursor coordinate values X and Y to the display processing device 6 (S9
). When S9 ends, the process from S2 onwards is repeated again.

Processing when the cursor movement direction fixed mode is canceled will be explained starting from Sll. When the present mouse type input device 11 is moved in Sll, the data area 14 in the cursor coordinate calculation means 4 is moved from the XY movement distance measuring means 1.
The moving distances ΔX and Δy in the X-axis direction and Y-axis direction are sent to and stored (S12). Next, the processing program 13 in the cursor coordinate calculation means 4 calculates the cursor coordinate value using the data in the data area 14 (813
), in S13, the cursor coordinates X and Y are determined as X=X1+Δx/ from the formula Y=Y1+Δy/k. Here, Xl and Yl are the previous cursor coordinates. The data transfer means 5 transfers the obtained cursor coordinate values X and Y to the display processing device 6 (Si2), S
When Step 14 is completed, the processing from S2 onwards is repeated again.

(Effects of the Invention) According to the present invention, the computer side does not need to prepare any special graphic generation software, and can easily draw straight lines such as horizontal lines, vertical lines, diagonal lines, etc. by simply coloring the pixels of the received cursor coordinate values. You can draw shapes neatly freehand, improving the operability of designing shapes and characters.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the configuration of the XY movement distance measuring means in this embodiment,
FIG. 3 is a diagram showing an example of the configuration of the cursor moving direction fixed mode setting/cancelling means and the cursor moving direction specifying means in this embodiment, and FIG. 4 is a diagram showing an example of the configuration of the cursor coordinate calculation means in this embodiment. , FIG. 5 is a flowchart showing the processing flow of this embodiment, FIG. 6 is a diagram explaining the operation according to the present invention, and FIG. 7 is a diagram explaining the formula for calculating cursor coordinate values. DESCRIPTION OF SYMBOLS 1... XY movement distance measuring means, 2... Cursor moving direction fixed mode setting/cancelling means, 3... Cursor moving direction specifying means, 4... Cursor coordinate calculation means, 5...
- Data transfer means, 6... Display processing device, 7... Tracking ball, 8... XY direction rotation detection mechanism, 9
...Fixed mode setting button, 10...Fixed mode release button, 11...Mouse type input device, 12.-CP
U. 13... Processing program, 14... Data area.

Claims (1)

[Claims] In a mouse-type input device that is connected to a display processing device, generates coordinate data of a cursor to be displayed on the display surface of the display processing device, and inputs the cursor coordinate data to the display processing device, cursor movement direction fixed mode setting/cancellation means for setting whether or not to fix the movement direction of the cursor; and cursor movement direction fixed mode setting means・A cursor movement direction specifying means for specifying the cursor movement direction when the cursor movement direction fixed mode is set by the release means, and the movement distance in the X-axis direction and the Y-axis direction measured by the XY movement distance measurement means and the The X coordinate and Y coordinate of the cursor from the cursor movement direction specified by the cursor movement direction specifying means.
A mouse type input device comprising: a cursor coordinate calculation means for calculating coordinates; and a data transfer means for transmitting the cursor coordinates calculated by the cursor coordinate calculation means to the display processing device.