JPH05159038A - Correction system for graphic in stroke input - Google Patents

Abstract

PURPOSE:To facilitate a correction/addition operation at the time of inputting a stroke by interactively inputting the stroke in a graphic processing system. CONSTITUTION:When an operator inputs the stroke, an inputted coordinate value is stored in a coordinate value storage means 31 and a display content to be erased by the stroke display of the coordinate value is stored in a display storage means 32 so as to display the stroke. When stroke input terminates and the inputted coordinate value is to be corrected and added, altered display owing to correction and addition is returned to an original state from a display content storage area 37 by using a restorage means 35, and the display of the altered coordinate value is updated. Thus, interactive correction is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic system, and more particularly to a method for modifying a graphic in a graphic processing system having a stroke input function for inputting a plurality of coordinate axes.

[0002]

2. Description of the Related Art Stroke input is a function that allows an operator to perform an input operation from an input device to interactively specify coordinate values, but conventionally, once the coordinate values have been specified, they cannot be changed. It was Therefore, when it is desired to make a change after the designation, it is necessary to display the drawing before the stroke input again and input the stroke again.

[0003]

The problem to be solved is to change the coordinate value specified interactively by returning the control to the drawing before the stroke input and again inputting the coordinate value interactively. Since it has to be re-executed, there is an inconvenience that the user's system must incorporate a procedure for re-entry, or the program currently being executed must be aborted and a new program executed again. The point is that you cannot make corrections while looking at the displayed state.

[0004]

SUMMARY OF THE INVENTION According to the present invention, the coordinates of a plurality of points at the time of input are stored in a stroke input, and the display contents erased by displaying the designated points in a stroke are associated with the coordinate values. However, if correction is necessary, the coordinate value of a certain point of the specified stroke is interactively corrected, and if additional correction is required, a new stroke input is used to change a certain point. Is specified, and the corresponding coordinate value is added.

[0005]

The present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment for realizing a method of correcting a figure in stroke input according to the present invention. In FIG. 1, 10 is a graphic display device, 20 is an input device, and 30 is a graphic processing system. Input device 20
In the figure, 21 is an end trigger type designating device, and 22 is a correction end trigger designating device. In the graphic processing system 30, 31 is a coordinate value storage means, 32 is a display storage means, 3
3 is a coordinate correcting means, 34 is a coordinate adding means, 35 is a restoring means, 36 is a coordinate value storage area, and 37 is a display content storage area.

The graphic processing system shown in FIG. 1 comprises a graphic display device 10, an input device 20, and a graphic processing system 30. The input device 20 includes an end trigger type specifying device 21 and a correction end trigger specifying device 22. The graphic processing system 30 includes a coordinate value storage unit 31, a display storage unit 32, a coordinate correction unit 33, and a coordinate addition unit 3.
4, a restore means 35, a coordinate value storage area 36, and a display content storage area 37. In FIG. 1, the coordinate correction means 33 is used only during correction processing by stroke input, and the coordinate addition means 34 is used only during addition processing by stroke input.

FIG. 2 is a flow chart showing the processing of the graphic processing system shown in FIG. FIG. 2A shows a flow of correction processing by stroke input, and FIG. 2B shows a flow of addition processing by stroke input. FIG. 3 is a flowchart showing the details of the correction processing by stroke input in the processing flow shown in FIG. FIG. 4 is a flowchart showing details of the additional processing by stroke input in the processing flow shown in FIG. In FIG. 4, FIG. 4A shows a first execution example, and FIG. 4B shows a second execution example.

Next, the embodiment shown in FIG. 1 will be described with reference to FIG.
The process flow of (a) will be described. Until the graphic processing system 30 becomes ready to accept a stroke input and the end trigger type designating device 21 of the input device 20 raises the stroke input end trigger 21, step 30
With 0, stroke input is continued. Step 310 is repeated until a stroke is input by the input device 20, and if a stroke is input, the process proceeds to step 320. In step 320, the input coordinate data is stored in the coordinate value storage area 36 using the coordinate value storage means 31, and the process proceeds to step 330.

In step 330, the coordinate value storage area 36
The teaching contents erased by the stroke display based on the coordinate points indicated by the data are stored in association with the coordinate points. When the echo method of stroke input is a marker, the displayed content is lost by displaying the specified marker centered on the coordinate point. On the other hand, when the stroke echo method is a method of connecting coordinate points designated by a line, the display content is lost by the line display. As described above, the display contents differ depending on the stroke echo method. In step 340, stroke display is performed using the input coordinate values according to the echo method, and the process returns to step 300.

The end trigger is the end trigger type designation device 21.
Stroke input ends,
Proceed to step 350. In step 350, the operator determines whether to correct the stroke drawn by the stroke input. If you don't need the fix,
The correction end trigger designating device 22 of the input device 20 is raised, and the process proceeds to step 360 until correction is no longer necessary, and the correction by stroke input is performed according to step 360. When the correction is completed, this process ends.

Next, details of the correction by stroke input in step 360 will be described with reference to FIG. In step 3610, the initial value i is set to 0, and the process proceeds to step 3630 until i becomes equal to the number of stroke input points. If i is equal to the number of stroke input points, the process of correcting the input value is ended in step 362.
In step 3630, the cursor of the input device 20 is moved and displayed at the i-th point of the coordinate value storage means 36, and in step 3640, the operator determines whether or not the currently displayed point needs to be corrected. .. If the correction is necessary, the trigger that the correction is necessary is issued and the process proceeds to step 3670. If not, the value of i is set to 1 by step 3650.
Increase and return to step 3620. When the correction request is made by the operator, in step 3660, the operator inputs a stroke to a position to be corrected, and the i-th data in the coordinate value storage area 36 is stored by using the coordinate value storage means 31. The coordinate data input by the stroke input in step 3660 is changed in step 3570.

Since the original stroke display is erased by correcting the points in step 3670, the display content storage area 37 is displayed.
The display contents saved in the above are extracted by the restore means 35 in step 3680 and drawn. Using the i-th coordinate value stored in the coordinate value storage area 36 in step 3670, the display content erased by performing stroke display is stored in the display content storage area 37 in step 3690. In step 3700, the stroke input point is displayed as a stroke, and step 36
The correction of the input value of 0 is completed.

In the execution example of the stroke input correction step 360, the point stroke input by the graphic processing system 30 is automatically displayed by the cursor of the input device 20 until the point desired to be changed by the operator is displayed. The points that are automatically displayed are skipped. However, depending on the system, as shown in FIG. 4B, the operator can input a point to be changed and the operator can click two points connected thereto.

Next, the embodiment shown in FIG. 1 will be described with reference to FIG.
The process flow of (b) will be described. The stroke input is continued at step 300 until the graphic processing system 30 becomes ready to accept the stroke input and the end trigger designating device 21 of the input device 20 raises the stroke input end trigger 21. Step 310 is repeated until a stroke is input by the input device 20, and if a stroke is input, the process proceeds to step 320. In step 320, the input coordinate data is stored in the coordinate value storage area 36 using the coordinate value storage means 31, and the process proceeds to step 330.

In step 330, the coordinate value storage area 36
The display contents erased by the stroke display based on the coordinate points indicated by are linked with the coordinate points and stored. If the echo method of stroke input is a marker, the display content is lost by displaying the specified marker centered on the coordinate point. On the other hand, when the stroke echo method is a method of connecting coordinate points designated by a line, the display content is lost by the line display.
As described above, the display contents differ depending on the stroke echo method. In step 340, stroke display is performed using the input coordinate values according to the echo method, and the process returns to step 300.

If the end trigger is lifted by the end trigger designating device 21, the stroke input is ended and the routine proceeds to step 350. In step 350, the operator determines whether to correct the stroke drawn by the stroke input. When the correction is no longer necessary, the correction end trigger designating device 22 of the input device 20 is raised, and the process proceeds to step 380 until the correction is no longer necessary, and additional correction by stroke input is performed according to step 380. When the additional correction is completed, this process ends.

Next, the details of the first example regarding the additional correction by the stroke input in step 380 will be described with reference to FIG.
For details of the second example, refer to FIG.
This will be described with reference to (b).

In FIG. 4, the initial value i = 0 is set in step 3810, and the process proceeds to step 3830 until i becomes equal to the number of stroke input points. If i becomes equal to the number of stroke input points, the processing of additional correction of the input value is completed in step 3820. In step 3830, the cursor of the input device 20 is moved and displayed at the i-th point of the coordinate value storage means 36, and in step 3840 the operator determines whether or not the point currently displayed needs to be corrected. If additional correction is required, the trigger for additional correction is required and the process proceeds to step 3860. If not, step 3850 increments the value of i by 1 and returns to step 3820. When an additional correction request is made by the operator, the operator inputs a stroke at a position desired to be added in step 3860, and the coordinate value storage area 3
Using the coordinate value storage means 31, the i-th data of 6
The coordinate data input by the stroke input in step 3860 is inserted in step 3870 next to the i-th position.

In order to erase the original stroke display by modifying the points in step 3870, the display content storage area 37 is displayed.
The contents display saved in the above is extracted by the restore means 35 in step 3880 and drawn. In step 3890, the display content erased by performing the stroke display using the i-th coordinate value stored in the coordinate value storage area 36 in step 3870 is stored in the display content storage area 37 in step 3890. In step 3900, the stroke input point is displayed as a stroke, and the additional correction of the input value in step 380 ends.

In FIG. 5, step 3910 is executed until the operator inputs a stroke to a position to add a point to be added.
When the stroke input is executed by repeating the above steps, step 3920 is performed to select two points before and after the input point.
Thus, the operator selects and clicks the first point from the points already displayed. Next, in step 3930, it is checked whether or not the clicked coordinate data exists in the coordinate value storage area 36. If the clicked coordinate data does not exist in the coordinate value storage area 36, the process returns to step 3920 to ask the operator to input the existing point. If the point exists, the coordinate value storage area 36 is displayed. By using step 3940, points before and after the existing point are selected as candidates for the next point to be clicked by the operator.

At 3950, the operator selects and clicks the point before or after the other one of the points input at step 3910 from the points already displayed. If the clicked coordinate data is one of the two points selected in step 3940, the process proceeds to step 3970, and if it is not one point, the process returns to step 3950. Step 3
The coordinate data input by the stroke in 910 is added between the point determined in step 3920 in the coordinate value storage area 36 and the point determined in step 3950 in step 3870. In order to erase the original stroke display content by adding the point in step 3870, in step 3980 the display content saved in the display content storage area 37 is retrieved using the restore means 35 and drawing is performed. In step 3990, the additional coordinate data stored in the display value storage area 36 is displayed according to the echo method. This ends the second example of adding input values in step 380.

[0022]

As described above, according to the present invention, when an operator wants to correct and add input coordinate values by interactively correcting and adding figures regarding stroke input. Has the advantage of simplifying the operation, because it is not necessary to incorporate a procedure for re-entry into the user's system, and correction can be performed without aborting and restarting the user's system.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment for realizing a method of correcting a figure in stroke input according to the present invention.

FIG. 2 is a flowchart showing processing of the graphic processing system shown in FIG. 1, in which (a) shows correction and (b) shows additional processing.

FIG. 3 is a flowchart showing details of correction processing by stroke input in the processing flow shown in FIG.

FIG. 4 is a flowchart showing details of additional processing by stroke input in the processing flow shown in FIG. 2 (b).

FIG. 5 is a flowchart showing details of additional processing by stroke input in the processing flow shown in FIG.

[Explanation of symbols]

10 Graphic Display Device 20 Input Device 21 End Trigger Type Designating Device 22 Correction End Trigger Designating Device 30 Graphic Processing System 31 Coordinate Value Storage Means 32 Display Storage Means 33 Coordinate Modifying Means 34 Coordinate Adding Means 35 Restoring Means 36 Coordinate Value Storage Areas 37 Display Content storage area 300, 310, 320, 330, 340, 350, 3
60, 380, 3610, 3620, 3630, 364
0,3650,3660,3670,3680,, 36
90, 3700, 3810, 3820, 3830, 38
40, 3850, 3860, 3870, 3880, 38
90, 3900, 3910, 3920, 3930, 39
40, 3950, 3960, 3970, 3980, 39
90,4000 processing steps

Claims (3)

[Claims] 1. A graphic processing system comprising coordinate value storage means, display storage means, coordinate correction means, coordinate addition means, restore means, coordinate value storage area, and display content storage area, and a graphic processing system connected to the graphic processing system. A method of correcting a figure in stroke input, comprising: an input device including an end trigger type specifying device and a correction end trigger specifying device; and a figure display device connected to the figure processing system for displaying a figure. 2. In the graphic processing system having a stroke function which is a plurality of coordinate input functions, when performing stroke input, the coordinate value storage means and the coordinate value storage area are used to coordinate the plurality of points at the time of input. And a step of storing the display content erased by displaying the stroke of the designated point by using the coordinate value storage area in association with the coordinate value by the display storage means and the display content storage area. , A step of designating that the stroke input is completed by the end trigger type designating device, and, after the trigger is designated, if correction is required, the coordinate value storage area is used to The step of interactively modifying the coordinate value of a certain point by the coordinate modifying means, and the stroke display with the coordinate value before the modification. In order to erase the stored contents, a step of returning the corresponding portion of the display storage area to the display surface by the restoring means, a stroke display is performed using the changed coordinate value, and the correction is completed by the correction end trigger designating device. When the operator interactively specifies the coordinate values by using the stroke input function with respect to the drawing of the figure by the step of performing the step, the coordinate values can be modified. The stroke input method of the graphic display system according to claim 1. 3. When performing a stroke input in the graphic processing system having a stroke function which is a function of inputting a plurality of coordinate values, the coordinate value storage means and the coordinate value storage area are used to coordinate the plurality of points at the time of the input. And a step of storing the display content erased by displaying the stroke of the designated point by using the coordinate value storage area in association with the coordinate value by the display storage means and the display content storage area. A step of designating that the stroke input is completed by the end trigger type designating device, and the coordinate adding means using the coordinate value storage area if additional correction is required after the end trigger is designated. The step of adding the coordinate value of the point of the newly designated stroke input to the coordinate value storage area, and before changing In order to erase the contents displayed in the stroke with the coordinate values of, the step of returning the relevant portion of the display content storage means to the display surface by the restore means, and performing the stroke display using the coordinate values after the addition, and the end With a step of designating that the correction has been completed by the trigger designating device, when the operator interactively designates coordinates by using the stroke input function with respect to drawing of a figure, it is possible to add coordinate values. The stroke input method of the figure display system according to claim 1.