JPS63223967A - Graphic input system - Google Patents

Abstract

PURPOSE:To easily and exactly set a position relation between segments, at the time of executing the next picture drawing to match a graphic which is drawn already, by executing a change of a cursor display size through a keyboard, an arbitrary control of an axial rotation and an axial movement, etc. CONSTITUTION:In case of bringing a straight line to picture drawing, first of all, by operating a mouse 2, a deformation cursor 11 is shifted onto a straight line item on a picture drawing instruction menu screen 4, and a straight line mode is selected. Subsequently, the cursor 11 is moved onto a first instruction point 7 on a picture drawing screen 5, and by pushing a button (a), the first instruction point 7 is inputted as a picture drawing start point. Next, by depressing an enlargement key on a keyboard 10, the cursor 11 is enlarged and displayed to a display screen size of a display device 1. Subsequently, by using an X axis rotary key, an axis-of-abscissa segment of the cursor is rotated counterclockwise successively, and at a state that it is a desired inclination, the key is released. Next, by moving the mouse 2, while depressing a Y axis moving key on the board 10, the second and the third instruction points 8, 9 are inputted successively, and a straight line 6 and a segment in which the point 9 is a start point can be brought to picture drawing easily as a straight line of the same inclination.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a graphic input process in which a graphic is created in a conversational manner between a graphic creation device and an operator.

[Conventional technology]

In general, a graphic creation device receives position information (coordinate values) input by the operator and drawing commands (straight lines).

Various line segments are displayed on the display screen depending on the settings of circles, rectangles, etc.) and their attributes (line type, line width, expression color, etc.). For example, if you want to draw a straight line, first set the straight line drawing command and the attributes of that straight line using some means, then enter the position information using a joystick, light pen, mouse, etc. that corresponds to the end point of the straight line drawing. manually by means of a device (referred to as a pointing device).

By doing this, since the set drawing command is a straight line, the coordinate values of the two input points are used as the starting point.

A straight line with an end point is displayed on the display screen according to the attribute.

Similarly, when drawing a circle, the coordinate values of two input points are determined as the center point of the circle and one point on the circumference of the circle, and a circle according to the specified attribute is displayed.

FIG. 4 schematically shows a conventional graphic creation device. In the figure, 1 is a display device, 2 is a mouse which is a coordinate input device, and 3 is a cursor that is always displayed at a position specified by the mouse 2 on the display screen. It moves freely on the screen according to the amount of movement, and the displayed position is the coordinate planned manual position. Incidentally, actual coordinate input is performed by pressing button a attached to the mouse 2. 4 is a drawing instruction menu screen, 5 is a drawing screen, 6 is a display example of a straight line drawn by this figure creation device, and ? , 8.9 are the coordinate values input by the operator using the mouse 21'', and are the coordinate values of the first pointing point and the second pointing point, respectively.
This will be referred to as the pointing point and the third pointing point.

Next, the operation will be explained. The case of drawing a straight line on a graphic creation device will be described. First, by operating the mouse 2, move the cursor 3 over the "straight line" item (area) written on the drawing instruction menu screen 4 on the display device 1 in FIG. 4, and select "straight line mode". .
Next, the user moves the cursor 3 onto the drawing screen 5, indicates a desired position with the cursor 3, and then presses button a attached to the mouse 2 to input positional information to the graphic creation device.

As a result, as described above, the first indicated point 7 input to the drawing screen 5 is determined to be the starting point of the straight line 6, the second indicated point 8 subsequently inputted is interpreted as the end point of the straight line 6, and both points are determined to be the starting point of the straight line 6. A connecting straight line 6 is generated and displayed. Furthermore, if a third designated point is input subsequently, it is set as the starting point of another straight line.

In this way, by arbitrarily moving the cursor 3 with the mouse 2 or the like on the figure creation device and specifying each coordinate point, a large number of line figure groups are connected and a final figure (for example, various block diagrams, maps, etc.) is constructed. To go.

[Problem that the invention seeks to solve]

Conventional cursor 3 displays in such graphic creation devices use symbols such as arrows, cross hairs, and the like that are about 1 cm square, and the operator is expected to be accurate in specifying the position. In such a case, when it is desired to set the third pointing point 9 on an extension of the straight line 6, it is left to the operator's visual estimation, and specification errors occur frequently. Setting the next starting point to match the drawing is more necessary as the drawing becomes more complex, and there is a drawback that it is difficult to accurately specify the width and length of the interval, which slows down the operation.

This invention was made to solve the above-mentioned problems, and when drawing the next figure in accordance with the already drawn figure, it is necessary to clearly maintain the positional relationship with, for example, a straight line that is distant from the figure. The object of the present invention is to provide a graphic input method that allows easy and accurate position specification.

Means for Solving Problem C] In the present invention, there are a step of manually inputting cursor designated position data to a graphic drawing device (step Sr), and a step of enlarging the two axes of the cursor in the axial direction (step S2). and,
Rotating the cursor around the intersection point (step S
3), a step of moving either axis of this enlarged cursor (step S4') to update the indicated position data of the intersection point, and a step of manually inputting this updated indicated position data (step Sr) Equipped with.

[Effect]

Manually draw the desired starting point 7 on the drawing screen 5 (step S+)
After that, the cursor 1 is enlarged as a deformation cursor (step S2), and the deformation cursor 11 is appropriately rotated (step 53) to preset the inclination of the figure to be drawn in hiT.

Next, along one axis of the cursor 11, the other axis is moved (step S), and the position data of the cursor is updated to the end point 8. Also, cursor 1 rotated from the new starting point 9
Step S4)
, manually as a new starting point 9 (step S5). In this way, the positional relationship between line segments can be clearly displayed,
Positioning is done quickly and accurately.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In FIG. 1, I is a display device, 2 is a mouse as an input unit, 4 is a TM picture menu screen, 5 is a drawing screen, and 6
is an example of a drawn straight line.

7.8.9 shows the positions on the screen manually entered using the mouse 2, and they are the first pointing point, the second pointing point, and the third pointing point, respectively.
It is called a pointing point. IO is a keyboard, which is generally equipped with graph ink keys for human input such as characters and symbols, and function keys for various controls.

Normally, meanings are assigned to each of these funxilon keys, but here, for example, the functions "enlarge,""X-axisrotation,""Y-axismovement," and "reset" are assigned. do.

Reference numeral 11 denotes a deformable cursor whose display can be changed by the function keys of the keyboard 10. Transform cursor 1
1 has a “+” mark with a cross hair cursor, and “
The “-” part of the “10 marks” is the X axis.

The "1" portion is called the Y-axis, and the intersection of the X-axis and the Y-axis is the cursor position data. The mouse 2 is also provided with a button a for capturing data at the position indicated by the cursor 3.

Next, the operation will be explained according to the flowchart shown in FIG. Now consider the straight line drawing mode. By operating the mouse 2, move the deformation cursor 11 onto the "straight line" item (area) on the drawing instruction menu screen 4 and select "straight line mode j".

However, the deformed cursor 11 in this case is displayed in a normal cross hair cursor (cross mark) size of about 1 cm. In step S1, in order to input a drawing start point, the deformation cursor 11 is moved onto the first designated point 7 on the drawing screen 5 by operating the mouse 2 as shown in FIG. 2(A). At this stage, press button a on mouse 2 to move to the first indicated point 7.
manually. In step S2, by pressing the "enlarge" key on the keyboard 10, the deformed cursor 11 is changed from the cross-hair cursor shape of about 1 cm that has been displayed until now to the second position without changing the position of the intersection of the cross marks. figure(
As shown in b), the display is enlarged to the display screen size of the display device 1. 1 on the keyboard 10 in step S3.
- Use the “X-axis rotation” key to rotate the horizontal axis of the cursor (X-axis:
1) in the counterclockwise direction, and release the key when the desired inclination is reached as shown in Figure 2 (c). This allows the deformed cursor 11 shown in FIG. 1 to be displayed. Next, in step S4, when manually moving the second pointing point 8, by moving the mouse 2 while pressing the "Y-axis movement" key on the keyboard 10, the X-axis line is moved as shown by the dotted line in FIG. The vertical Y-axis line segment of the transformation cursor 11 (Y-axis:
Move only one line segment of the 10-mark.

Here, the position change in the Y direction on the drawing screen 5 can be performed as follows. It is assumed that the coordinate values (coordinates entered manually as position information) of the intersection of the horizontal X-axis line segment and the vertical Y-axis line segment on the screen 5 are P (X, Y). At this time, the amount of movement of mouse 2 is (dx).

dy). In contrast, the display position of the vertical axis (Y-axis) line segment is moved by dX, and the intersection coordinate value of the deformed cursor 11 is set to PH (X + d x, Y + tan a ・dx).
(However, α is the inclination caused by rotation on the horizontal axis (X-axis)), thereby effectively moving only the Y-axis. In other words, the coordinate manual position when the button of the mouse 2 is pressed in step S5 is Pl.

By controlling the movement of only the Y-axis segment, the second indicated point 8 and the first
The third tllt indication point 9 indicated by the broken line in the figure is manually drawn to form a straight line 6 whose starting and ending points are the first indication point 7 and the 21st indication point 8, and a line whose starting end is the third indication point 9. can be easily drawn as straight lines with the same slope.

At the stage when these series of manual operations are completed, by pressing the "reset" key on the keyboard 10, the
As shown in , the display shape of the deformed cursor 11 is changed to the original 1 (
You can change the display to a cross-hair cursor.

In the above embodiment, only a limited number of function keys are assigned.

As shown in (G), there are also functions such as simultaneous rotation of the X-axis and Y-axis, independent rotation of the Y-axis, and independent movement of the X-axis.

Furthermore, although the description has been made using the function keys on the keyboard to control the deformation of the cursor, the same effect can be obtained even if the function keys are assigned to mouse buttons or presented in a menu format.

Further, although the size of the display of the deformed cursor is set to correspond to the display screen size, more fine-grained control may be applied to make the display correspond to the drawing screen size.

〔Effect of the invention〕

As described above, according to the present invention, there are a step of inputting cursor designated position data into a graphic drawing device, a step of enlarging two axes of the cursor in the axial direction, and a step of moving the cursor around the intersection point. A step of rotating the enlarged cursor, a step of updating the old position data of the intersection point by moving one of the axes of the enlarged cursor, and a step of manually inputting the updated indicated position data. The display size can be changed according to instructions from the operator, and axis rotation, axis movement, etc. can be arbitrarily controlled, making it easy to set the positional relationship between line segments to be drawn. Therefore, erroneous operations in specifying coordinates are reduced, and high-speed drawing is possible. Further, there is an effect that coordinate input with high positional accuracy can be obtained without requiring a special mechanism.

[Brief explanation of drawings]

FIG. 1 is an external view of the operation of a graphic creation device to which the graphic input method of the present invention is applied, and FIG. 2 is an external view of the operation of each motion creation device of the present invention. 2... Mouse (input section), 3... Transformation cursor, 5
...Drawing screen, 6... Straight line, 7° 8.9... Indication point, 10-- Key, t key.

Claims (1)

[Claims] A figure input method that includes an input unit that indicates an arbitrary position on the drawing screen of a figure creation device and a cursor that displays this indicated position on two axes that intersect with each other, and draws various figures based on the data of the indicated position. the step of inputting data on the indicated position of the cursor into the graphic drawing device, the step of enlarging two axes of the cursor in the axial direction, the step of rotating the cursor around the intersection point, and the step of enlarging the cursor. A graphic input method comprising: a step of updating indicated position data of the intersection point by moving one of the axes of the cursor; and a step of inputting the updated indicated position data.