JPS63273124A - Plotting end control system in continuous line and polygon plotting - Google Patents

Abstract

PURPOSE:To facilitate the end of plotting by clicking a mouse at the end point of plotting and moving the mouse cursor over a long distance rapidly so as to complete the plotting. CONSTITUTION:A graphic such as a polygonal line or polygon is displayed on a display device 1 and a mouse 3 is used to plot the graphic such as a polygonal line or polygon. A clock detection section 8 of a plotting processing section 7 detects the depression of the button (click) of the mouse 3 and a rapid movement detection section 9 detects it that the movement of the mouse 3 is rapid and long in the distance, and an end control section 10 applies the end control of the slotting of the polygonal line and polygon. Thus, the graphic is finished by identifying the rapid and long distant movement of the mouse after the click at the end point of plotting to facilitate the completion of the plotting.

Description

[Detailed Description of the Invention] [Summary] When drawing a continuous line or polygon using a mouse, the problem occurs when the mouse cursor is moved suddenly and over a long distance after clicking at the end point of drawing the continuous line or polygon. By terminating the drawing, the tI image can be easily terminated.

[Industrial Field of Application] The present invention relates to a method for drawing continuous lines and polygons using a mouse in a graphics processing system, and particularly relates to a method for controlling the end of drawing.

[Conventional technology]

In graphic processing systems, when a continuous line, polygon, or other graphic is drawn on a display using a mouse, it is necessary to instruct the end of the drawing in some way.

FIG. 5 is a diagram showing the configuration of a graphic processing system having a function of drawing figures such as continuous lines and polygons on a display using a mouse.

In FIG. 5, 51 is a mouse, 52 is an event management section, 53 is a drawing processing section, and 54 is a display output section.

55 is a display.

By moving the mouse 51 on a flat surface.

Move the mouse cursor on the display 55.

Draw continuous lines and polygons.

Pressing a mouse button while drawing (called a click)
By doing this, the starting point and ending point are specified.

The event management unit 52 manages mouse events indicating the content of mouse operations. Mouse events include event types, button types, X and Y coordinates, and the like.

The drawing processing section 53 performs processing for drawing based on the data output from the event management section 52 and creates a drawing command.

The display output unit 54 draws the upper figure on the display 55.

The display 55 is for displaying two figures.

In the above system, first, the type of figure, such as a continuous line or polygon, is entered manually using a keyboard or the like.

Next, the mouse 51 is moved to move the mouse cursor on the display 55 to determine the starting point position, and a predetermined button, for example, the left button, of the mouse 51 is pressed at that position. As a result, the starting point is shown on the display 55.

If you move the mouse 51 further and press the left button,
The pressed point and the starting point are connected by a straight line.

By repeating the above operations, any figure represented by a straight line can be displayed on the display 55.

Conventionally, to instruct the end of drawing, you press the left mouse button at the end point position and then press the left button outside the drawing area, or press the left button again (including double-clicking) at the end point position. Alternatively, for polygons, a method is adopted in which the left button is pressed at the end point position and then the left button is pressed at the starting point position.

FIG. 6 is a diagram showing the basic logic for drawing polygonal lines using the conventional method.

This will be explained below.

First, input a polyline command from the keyboard or the like.

■Input mouse events. As a mouse event,
There are event types, button types, X and Y coordinates, etc.

■Determine whether the left button has been pressed. N.

If so, ■ Return to mouse event input, and if YES, ■
go to

■Retain the coordinates of the pressed point as the starting point.

■Input mouse events.

■Determine whether the left button has been pressed. N.

If so, return to ■mouse event input. If YES■
go to

■Determine whether the coordinates of the pressed point match the coordinates of the point pressed immediately before. If YES, the process ends. NO
If so, go to ■.

■Retain the pressed point and connect it with the point you pressed just before with a straight line. After that, return to ■mouse event input.

The conventional example shown in FIG. 6 has a problem in that it requires a difficult operation of pressing a button twice at a small dot on the display.

FIG. 7 is a diagram showing the basic logic for drawing polygons using the conventional method.

This will be explained below. ′ First, enter the polygon command from the keyboard.

■Input mouse events. Mouse events include event types, button types, X and Y coordinates, and the like.

■Determine whether the left button is pressed. If NO, return to ■mouse event input; if YES, go to ■.

■Retain the coordinates of the pressed point as the starting point.

■Input mouse events.

■Determine whether the left button has been pressed. If NO■
Return to mouse event input. If YES, go to ■.

■Determine whether the coordinates of the pressed point match the coordinates of the starting point. If YES, go to ■. If NO, go to ■.

■Retain the coordinates of the pressed point and connect this with the point you pressed just before with a straight line. After that, return to ■mouse event input.

■Connect the starting point and ending point with a straight line, then finish.

In the conventional example shown in FIG. 7 as well, it is necessary to perform a difficult operation of aligning small dots called a start point and an end point on the display and then pressing a button.

[Problem that the invention seeks to solve]

After clicking at the end point (pressing a button), click outside the drawing area to finish drawing.

The problem was that you had to move the mouse a long distance and then click again.

Furthermore, the method of ending the drawing by clicking again at the end point has a problem in that it requires the difficult operation of clicking twice on a small point.

Additionally, after the click at the end point for the polygon.

How to end drawing by clicking even at the starting point.

There was a problem in that it required a difficult operation to click on a small point.

[Means for solving problems]

When drawing a continuous line or polygon using a mouse, the present invention identifies that the mouse cursor has been moved rapidly and over a long distance after clicking at the end point of drawing the continuous line or polygon, and ends the drawing. This makes it easier to finish drawing.

FIG. 1 is a diagram showing the basic configuration of the present invention.

In Figure 1, l is a display, 2 is a keyboard,
3 is a mouse, 4 is a graphic processing system, 5 is a display output unit,
6 is an event management section, 7 is a drawing processing section, 8 is a click detection section, and 9 is a sudden movement detection section.

10 is an end control section, and 11 is a polygonal line/polygon generation section.

12 is a graphic memory.

Graphics such as polygonal lines and polygons are displayed on the display l.

The mouse 3 is used to draw figures such as polygonal lines and polygons.

The graphic processing system 4 has two display output units 5. It consists of an event management section 6 and a drawing processing section 7.

The display output unit 5 is for displaying a figure on the display 1 using the figure data being drawn in the li-double processing 7 or the figure data Mvi'd onto the figure memory 12.

The event management unit 6 manages mouse events indicating the content of mouse operations. Mouse events include event types, button types, X and Y coordinates, and the like.

The drawing processing section 7 includes a click detection section 8. Sudden movement detection section 9
．． It consists of a termination control section 10 and a polygonal line/polygon generation section 11.

The click detection unit 8 detects when a mouse button is pressed (click).
Detect.

The sudden movement detection unit 9 detects that the mouse movement is sudden and over a long distance.

The termination control unit 10 performs termination control of drawing of polygonal lines and polygons.

The polygonal line/polygon generation unit 11 generates data on polygonal lines and polygons according to mouse movements.

The graphic memory 12 holds graphic data generated by the polygonal line/polygon generator 11.

[Effect]

FIG. 2 is a diagram showing the operation of the present invention.

Hereinafter, one aspect of the present invention will be explained in detail based on FIG.

(a) When the mouse is moved on a plane, the mouse cursor moves on the display. Move the mouse cursor, stop at the starting point, and press the left mouse button to confirm the starting point on the display. Next, move the mouse cursor and stop at the point where it should be bent.
Press the left button. This will determine the point at which it should be bent. Repeat the above operations until the end point. A rubber band is usually drawn between the mouse cursor and the most recently determined point.

(b) When the mouse cursor is at the end point, move the mouse rapidly and over a long distance to end the drawing.

(C) In the case of a polygonal line, the figure ends at the end point, and the rubber band is cut, as shown on the left.

In the case of a polygon, the end point and start point are connected by a straight line, as shown on the right, and the shape ends and the rubber band is cut.

〔Example〕

FIG. 3 is a diagram showing the basic logic of drawing processing for drawing polygonal lines according to the method of the present invention.

Below, FIG. 3 will be explained.

First, enter the polyline command from the keyboard.

■Input mouse events. for mouse events.

There are event types, button types, X and Y coordinates, etc.

■Determine whether the left button has been pressed. N.

If so, return to ■mouse event input. If YES, execute the process (2).

■Keep the pressed point as the starting point.

■Input mouse events.

■Determine the type of mouse event. If the mouse is moved, go to judgment ■. If the left button is pressed.

Perform the processing in ■. Otherwise, return to ■mouse event input.

(2) Determine whether the amount of movement of the mouse and the speed during that time are both larger than respective thresholds given in advance. If YES, the process ends. If NO, return to ■mouse event input.

■Retain the coordinates of the pressed point and connect this with the point you pressed just before with a straight line. After that, return to ■mouse event input.

FIG. 4 is a diagram showing the basic logic of drawing processing for drawing polygons according to the method of the present invention.

Below, FIG. 4 will be explained.

First, enter a polygon command from the keyboard.

■For mouse event input and mouse events.

There are event types, button types, x and y coordinates, etc.

■Determine whether the left button is pressed. If NO, return to ■mouse event input. If YES, execute the process (2).

■Retain the coordinates of the pressed point as the starting point.

■Input mouse events.

■Determine the type of mouse event. If the mouse is moved, go to judgment ■. If the left button is pressed.

Perform the processing in ■. Otherwise, return to ■mouse event input.

(2) Determine whether the amount of movement of the mouse and the speed during that time are both larger than respective thresholds given in advance. If YES, execute the process (2). If no,
■Return to mouse event input.

■Retain the coordinates of the pressed point and connect this with the point you pressed just before with a straight line. After that, return to ■mouse event input.

■Connect the starting point and ending point with a straight line. Then it ends.

〔Effect of the invention〕

In the present invention, it is possible to finish the process by just moving the mouse five times after clicking at the end point, so there is no need to click twice at the end point or click at the start point.

Drawing can be easily finished, reducing the burden on the user and improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the basic configuration of the present invention, FIG. 2 is a diagram showing the operation of the present invention, FIG. Figure 5 is a diagram showing the basic logic of drawing polygons using the conventional method. Figure 5 is a diagram showing the configuration of the graphic processing system. Figure 6 is a diagram showing the basic logic of drawing polygons using the conventional method. Figure 7 is the diagram showing the basic logic of drawing polygons using the conventional method. FIG. 3 is a diagram showing the basic logic of drawing polygons. In FIG. 1 is a display 2 is a keyboard 3 is a mouse 4 is a graphics processing system 5 is a display output section 6 is an event management section 7 is a drawing processing section 8 is a click detection section 9 is a rapid movement detection section 10 is an end control section 11 is a polygonal line/multiple The square generation unit 12 is the shape memory patent applicant Fumihiro Hase (patent attorney at Pfn Co., Ltd.) (2 others)
No. Ryōmasu Vujirekai ζ This invention's effect $ 2 Figure 4 Lid, next method't; yo゛) + Mjtf! <4 heather 0
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Claims (1)

[Claims] In a graphics processing system equipped with a continuous line and polygon drawing function using a mouse, when the mouse cursor is moved to draw a continuous line or polygon, the mouse cursor is moved. means (8) for detecting a specific click; and second means for detecting that the mouse cursor has been moved rapidly and over a long distance beyond a predetermined threshold after detecting the specific mouse click. (9) A drawing end control method for continuous line and polygon drawing, characterized in that when the second means (9) detects rapid movement of the mouse cursor over a long distance, the drawing is ended.