JPH02297673A - Graphic processor - Google Patents

Abstract

PURPOSE:To easily execute drawing processing to a desired graphic by correcting a graphic by using a correction parameter, by which a graphic constitution parameter in a designated area is designated, and executing the drawing processing to the whole graphic. CONSTITUTION:The parameter for the correcting reference point, correcting axis (correcting point) and correcting quantity of the graphic in the correction area, which is designated by a correction area designating means, is designated by a correction parameter designating means. At such a time, the designated parameter correction is executed to the graphic constitution parameter in the correction area by a graphic correcting means and the drawing processing is executed to the whole graphic. Thus, even to the graphic in a complicated shape drawn on a display picture, the graphic can be easily corrected to the desired graphic.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is based on computer aided technology (CAD).
(Computer-Aided Design) system has been improved, and in detail, the figure drawn on the display screen can be easily modified to the desired figure according to the figure parameters specified by drawing commands and data input. The present invention relates to a graphic processing device.

(Prior Art) Conventionally, as a CAD system with improved graphic processing operability, for example, Japanese Patent Application Laid-Open No. 61-273670
For example, the method disclosed in Japanese Patent Publication No.

In this figure processing method, when a predetermined figure is registered in advance, the figure is converted into a function using figure-specific parameters, so when modifying a registered figure, it is necessary to change the value of the figure-specific parameter. , I was making shape corrections.

For example, when processing the koban-shaped hole figure shown in Figure 9 using this figure processing method, the vertical and horizontal center lines, left and right semicircular arcs, and upper and lower line segments connecting the arcs are given to determine this figure. The coordinate value of the figure data for
In order to give y, the maximum vertical and horizontal external dimensions A of this figure
, B are defined as parameters specific to this figure, and this figure is registered by converting these parameters into functions shown in the following equation to correspond to the above coordinate values.

XI-A/2-5 YI ”B/2+5X2--
h Y, -B/2X3 = OY3 = O X+ -h YI = B/2X8
= A/ 2 + 5 Y5 = B/ 2
5h - (A-B) /2 This figure correction was performed by calling up the registered figure and correcting parameters A and B.

[Problem to be solved by the invention]

In the conventional figure processing method described above, when registering a predetermined figure, it is necessary to convert the figure into a function corresponding to the figure.

Furthermore, if an attempt is made to convert all complex-shaped structures into functions and set parameters corresponding to the shape, the data will conflict, making operations difficult.

Also, to draw figures in a normal CAD system,
Figure construction parameters For example, if it is a circle, specify the circle, center point coordinates and radius, if it is a line segment, specify the line segment and the coordinate points of two points, if it is a rectangle, specify the rectangle and the coordinate points of two points on the diagonal line. etc., using a predetermined input method.

This saves the effort of converting each figure into a function.

In order to correct the drawn figure, it takes time and effort to erase a part of the figure or repeat the above-mentioned manual operations.

Therefore, the present invention can save the effort of converting into a function when registering a figure, and also eliminates the need for manual labor to perform corrections when modifying a figure, and allows even figures with complex shapes to be displayed on the screen. The object of this invention is to provide a graphic processing device that can easily modify all the graphics into desired graphics.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a graphic processing device for a combiator-aided design system that draws a graphic on a display screen according to graphic configuration parameters specified by a drawing command or data input, in which a modification area of the graphic is specified. a correction area specifying means for specifying a correction area, and a correction reference point and a correction axis (correction point) of a figure within the area specified by the correction area specifying means.

A correction parameter specifying means for specifying a correction parameter such as a correction amount, and a figure configuration parameter in the area specified by the correction area specifying means are corrected using the correction parameters specified by the correction parameter specifying means, and the entire The present invention is configured as a graphic processing apparatus characterized by comprising a graphic correction means for drawing and processing a graphic.

[Effect]

Therefore, if the graphic processing device according to the present invention configured as described above is used, the modification reference point, modification axis (correction point), and modification amount of the graphic within the modification region specified by the modification region specifying means can be adjusted. When parameters are designated by the modification parameter designation means, the designated parameter modification is performed by the graphic modification means on the graphic configuration parameters within the modification area, and the entire graphic is drawn.

Therefore, even a complex-shaped figure drawn on the display screen can be easily modified into a desired figure.

〔Example〕

Hereinafter, embodiments embodying the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

It should be noted that the following examples are examples embodying the present invention, and are not intended to limit the technical scope of the present invention.

FIG. 1 is a block diagram of a graphic processing device according to an embodiment of the present invention, FIG. 2 is a flowchart showing a processing procedure in the graphic processing device, and FIG. 3 is a CAD
The tree structure charts in FIGS. 4, 5, . . . , and 8 for creating /CAM work data are schematic diagrams showing the graphic processing process of the graphic processing device.

In a graphic processing apparatus 1 according to an embodiment of the present invention shown in FIG. 1, various commands and data for performing graphic processing are inputted through an input section 2. As shown in FIG. This input unit 2 is, for example, a mouse or a tablet.

It consists of so-called pointing devices such as stylus pens and light pens, keyboards, etc.

Based on various commands and data inputted through the input section 2, a data processing section 3 consisting of a microcomputer etc. performs data processing such as various calculations, and as a result, figures are displayed on the display screen of a display section 4 consisting of a CRT etc. , the displayed figure is viewed and confirmed while drawing and figure modification are done in an interactive manner.

The drawn graphic data is stored in a storage unit 5 such as a floppy disk based on instructions given to the input unit 2 as necessary.

The graphic data stored in the storage section 5 is read out based on instructions given to the input section 2, and necessary corrections are made as necessary.

FIG. 2 shows an example of a figure correction processing procedure of this figure processing apparatus 1, and the figure correction procedure is selected as follows.

That is, in the selection setting of the modification method in step S1, selection and setting is made as to whether to perform partial modification of the figure, which will be described later, or complete modification.

If partial correction is selected in step S1, the process moves to step S2.

In this step S2, a selection is made between area correction and point correction, and if area correction is selected, step S2, which will be described later. S3. ...The following processing is performed. Further, if area correction is not selected but point correction is selected, step Sll, which will be described later.

S12. ...The following processing is performed.

If overall correction is selected in step SL above, step S2. It is determined that none of the steps Sll has been selected, and the process moves to step SIO, where the entire figure is modified as described below.

Next, with reference to FIG. 2, an example of the figure correction processing procedure of the figure processing apparatus 1 according to an embodiment of the present invention will be explained in steps Sl, S2, and the like described above. . . . will be explained using an example in which the figure shown in FIG. 4 is partially corrected and a region is corrected.

The figure shown in FIG. 4(a) is a combination of a rectangle and a line segment, and its figure configuration parameters include the coordinates of a rectangular parallelepiped and two points on its diagonal, and the combination of a straight line and its starting and ending points.

Designation of such figure configuration parameters is made in advance using the keyboard, mouse, etc. of the input unit 2, and the figure is drawn and displayed on the screen.

Then, when a predetermined operation is performed via the input section 2, the display section 4
On the display screen of , a modification method selection screen for selecting partial or total modification of the shape overlaps the shape shown in FIG. 4(a) drawn in advance and displayed on the screen (so-called multi-window ) displayed (31)
.

Further, when a partial correction is specified on the selection screen using the mouse, for example, the display screen is switched to a figure correction procedure selection screen, and when area correction is specified using the input section 2 as the correction procedure there (S2), the process proceeds to step S3. Move.

In this step S3, for example, a correction area indicated by a broken line in FIG. 4(a) is specified by using a mouse to specify a vertex on a diagonal line.

The means for realizing the function of specifying the correction area of a graphic mentioned above is an example of the correction area specifying means.

Next, as shown in Figure 4 (b), two points, for example A
Point and point B using the mouse. Based on this instruction, the data processing unit 3 automatically determines the correction axis as the X-axis, for example in this figure, since points A and B are parallel to the X-axis (34).

At this time, the data processing unit 3 automatically calculates the distance m between the two points, and displays the result on the screen, for example, in a predetermined list as the maximum dimension.

Further, based on the above-mentioned two points of instruction, a correction reference point is determined by a predetermined rule or, for example, by a mouse (S5).

The predetermined rules include, for example, setting a point outside the correction area (point A in this case) as the correction reference point, or setting the midpoint of the above two points as the correction reference point. distance m
For example, input the correction amount using the keyboard (
S6) As for how to give the input data, input the corrected distance n (Fig. 5 (C)) for the distance m, and correct it! (n
-m) is processed by the data processing unit 3 or directly modified! Examples include inputting (n-m).

the above-mentioned set of reference points for modifying the shape within the specified area;
A means for realizing a function of specifying a correction axis (correction point) and a correction amount is an example of a correction parameter specifying means.

Next, when a figure modification command is given through the input section 2, the data processing section 3 calls up figure configuration parameters used in normal CAD regarding the figure within the designated area. That is, in this example, of the two points A and B' on the diagonal of the rectangle of the figure configuration parameters that constitute the rectangle including points A and B, point B' within the specified area is called. .

Then, the modification determined by the modification parameter designation means is performed. In other words, point B' is moved and corrected by the correction amount (n-m) in the correction axis (Y-axis) direction based on point A, which is the correction reference point (point B''), and the rectangle that is the entire figure is redrawn. and is displayed on the screen as shown in FIG. 4(C) (37).

Then, if the corrected figure is the desired one (S8),
A registration instruction is given via the input unit 2, and the data is stored in the storage unit 5 to perform folded registration (S9).

Therefore, as shown in FIG. 4(a), the correction area is specified using, for example, a mouse, and the correction axis (correction point) and correction reference point are specified by specifying points A and B, and the amount of correction is specified using the keyboard, for example. You can modify the shape as you like with a simple input operation.

An example of the figure modification means is means for realizing the function of modifying the figure configuration parameters in the specified area using the modification parameters designated by the modification parameter designation means and plotting the entire figure.

Note that the position coordinates of point A and point B are respectively (Xl.

If Yv= ), (Xh, Yb), then in the above explanation, the distance Mm is 1xll-x, , l since it is along the X-axis direction in this case. Also, in the case of three-dimensional coordinates, the position coordinates are respectively (Xi, Ya, Za)
, (Xb.

Similarly, if Yb, Zb), then Ixi xJ.

In addition, although the above correction axis is along the Y axis, if it is specified in any direction, for example, in the case of three-dimensional coordinates, the distance is generally expressed as a composite of each axis direction. Modified in the direction of the vector.

In the case of the input method that specifies the two points above, switch the mode, and in normal mode, the Y-axis, Y-axis, and axis along the Y-axis are automatically selected, and the distance between the specified points is displayed. In this way, when a mode switch that specifies an arbitrary direction is selected, the specified distance between points, the Y axis, the Y axis, and the angle with respect to the Y axis may be displayed.

Therefore, the figure can be easily modified to any size in any direction.

Although the above-mentioned modified figure was a combination of a rectangle and a line segment, FIG. 8(a) shows a case in which the above-mentioned rectangular hole figure including a semicircle shown in FIG. 9 is corrected.

(b) will be used as a reference.

This Coban-shaped hole figure is a combination of line segments and semicircular arcs, and the coordinates of each point of this figure are P,,P,.

...If PG, the figure configuration parameter is (straight line).

Pl, P2)+ (arc, P2.P3.P,),
(Straight line P+, Pa), (circular arc, P5.PG, Pl
) is given by

Such graphic configuration parameters are designated using the keyboard, mouse, etc. of the input unit 2 in a manner commonly used for CAD, and the diagram is drawn.

That is, in the case of a line segment, the line type is specified using the keyboard, and the starting point and end point coordinates P, P2 of the line are specified using the mouse.

Similarly, in the case of a semicircular arc, a line 0 type arc is specified using the keyboard, and the coordinates of three points are specified using the mouse.

In addition, if you want to specify a free curve that is not included in this Coban-shaped hole figure, specify the number of coordinate points (n) as the line type.
, and then similarly designate the coordinates of the first point to the nth point.

Furthermore, in the case of a complex figure consisting of a combination of these figures, the number of designations of the above-mentioned figure configuration parameters simply increases.

Therefore, the effort of converting each figure into a function is saved.

Then, when a predetermined operation is performed via the input section 2, the display section 4
On the display screen of , a modification method selection screen for selecting partial or total modification of the shape is displayed in a multi-window on the above-drawn Koban-shaped hole shape (SL).
.

Therefore, the user specifies partial correction using the mouse on the selection screen, and further specifies area correction using the input unit 2 as the correction procedure (S2).

Then, for example, the correction area indicated by the broken line in FIG. 8(a) is specified by using a mouse to give vertices on the diagonal line (correction area specifying means).

Then, a point, for example P, for specifying correction is specified using the mouse (S4).

Further, for example, 27 points are specified as reference points for correction using the mouse (S5).

Then, the above PI will be displayed immediately in the multi-window display.

If the distance between points of P7 is a three-dimensional coordinate, the X-axis and y-axis.

For example, 0 is decomposed into z-axis direction components and displayed respectively, (x,y,z)-(0,15,O) is displayed.

Furthermore, a value for moving the 21st point to the position of the 217th point, for example, (x, y, z)=(0,20,0) is input (S6) (correction parameter specifying means).

Then, when a figure modification command is given through the input section 2, the data processing section 3 calls up the figure configuration parameters regarding the figure within the designated area.

That is, in this example, p, , p21 p, j p,
of figure configuration parameters including (straight line, PI, P2).

(arc r p21 p, I P+ )+ (
Straight line, P,, P).

(arc* p51 PG r PI) is called.

Then, the modification determined by the modification parameter designation means is performed. That is, the PIF7 (correction axis) of the axis specified above is p, 'p
, and the entire figure is corrected and displayed on the screen at the same ratio as shown in FIG. 8(b) (S7).

That is, the position coordinates of the straight line and the radius of the circular arc of this figure configuration parameter are corrected, and the figure configuration parameter becomes (straight line,
PI', P2'), (arc + P2Zp, ', p order'
), (straight line, P+', pH').

(Arc, P s ' * P G ', P + '
).

In the case of the above specification, the y-axis and z-axis direction components are not given as correction amounts, but if these values are inputted using the keyboard, corrections including those direction components will be made as a matter of course.

In addition, in FIG. 8(a), instead of the correction area shown by the broken line, a correction area shown by the dashed line is given, and the same P
,,P,,P,' etc. are specified, P,,PG+
P5 is modified to PI' r PG' + P5', and the radius of the semicircular arc at the left end is expanded to create a figure connected to the straight part (i.e., Pl', P shown by the broken line in Fig. 8(b)).
G', PS'+ P+, P: A figure in which I, p2 are connected).

Next, an example of the figure correction processing procedure in the case of correcting the entire central part of the figure shown in FIG. . . . Portions similar to those in FIG. 4 will be explained in a simplified manner.

When specifying the entire shape modification with the mouse on the aforementioned multi-window display modification method selection screen for selecting partial or total modification of the shape (Sl), step S
Move to IO.

Then, on the display screen, for example, the maximum dimension f in the X-axis direction,
The maximum dimension in the Y-axis direction (in the case of three-dimensional graphic processing, Z
The results of data processing by the data processing unit 3 are displayed in a predetermined list or the like (including the maximum dimension in the axial direction).

Then, for the displayed maximum dimension 2 in the X-axis direction, the corrected dimension l' (FIG. 60)) is input using, for example, a keyboard. Therefore, in this case, the data processing unit 3 automatically determines that the y-axis has been input as the correction axis.

Next, specify the correction reference point. Unless otherwise specified, the data processing unit 3 automatically sets the correction reference point to, for example, the zero point of the Y axis.

Further, the correction amount (1'-1') is automatically processed by the data processing unit 3 when the correction dimension l' is input in step S2 (S6).

Next, when a figure modification command is given via the input unit 2, it moves (1'-ffi)/2 in both + and - directions around the zero point of the Y-axis.
The figure is translated in parallel, and the figure as shown in FIG. 5 is displayed (S 7 ).

In the above case, the correction dimension l' was given for the maximum dimension 2, but if it is given by the figure correction magnification, the figure can be corrected to be uniformly expanded and contracted in the X-axis direction instead of being translated in parallel as described above. can.

Therefore, the entire figure can be easily modified to any size by specifying a desired axis.

Note that in the above case, the case where the amount of correction in the X-axis direction is given is described, but if the amount of correction is given to both the Y-axis and the Y-axis, it is also possible to perform correction processing in both axial directions at the same time ( 3
In the case of dimensions, it also includes the X-axis direction).

Next, an example of the figure correction processing procedure when correcting the entire three-dimensional figure shown in FIG.
1.32. . . . Portions similar to those in FIG. 5 will be explained in a simplified manner.

When modifying the entire figure is specified using a predetermined input method on the multi-window display modification method selection screen (Sl), the process moves to step SIO.

Then, the Y axis, the Y axis, and the magnification for each axis are displayed, for example, in the right corner of the display screen. FIG. 6(a) shows the state before correction, and each axis magnification is displayed as 1.

Here, for example, the X-axis magnification is set to 2, and the Y-axis and Y-axis remain at 1, and correction input is performed using the input section 2 (36). In this case, since only the X-axis magnification has been corrected, the data processing section 3 automatically Generally, the correction axis is specified as the Y-axis, and the correction reference point is also automatically specified as the zero point of the Y-axis.

Also, at this time, the amount of correction is automatically specified as twice in the X-axis direction.

Therefore, 2 points are uniformly distributed in the X-axis direction centering on the zero point of the Y-axis.
The whole figure is corrected by enlarging it twice. That is, the data processing unit 3 corrects the values of the configuration parameters of the entire figure, and the correction processing is immediately displayed on the screen as shown in FIG.
) is displayed (S7).

In the above case, the magnification of only the Y axis is specified, but if the Y and Y axes are also specified, corrections in each axis direction can be made at once. That is, the entire figure can be easily modified to any size by specifying a desired axis.

Next, step Sl described above with reference to FIG. 2 for an example in which a figure coordinate point is partially corrected.

S2. ... will be explained in order.

FIG. 7(a) shows an example of a three-dimensional figure that has been subjected to drawing processing and displayed on the screen.

When a modification method selection screen is called on this screen to designate partial modification of the figure (S1) and point modification is designated with the mouse (Sll), the modification point designation display screen is displayed and the process moves to step 312.

Step S! 2, for example, a correction point C is designated with the mouse in the right side view of FIG. 7(a).

Furthermore, in the next step 313, the correction reference point K is similarly specified using the mouse.

Then, the distance between the CKs is divided into Y-axis, y-axis, and z-axis direction components and displayed as (x, y, ri-(0,500,O), for example).

Then, for example, a correction point C that shortens the distance between CKs.
' (Fig. 7 0))) is input using the keyboard. That is, if (x, y, z) - (0,200, O), then the correction amount (y axis only, 500 - 200 - 300
) is calculated by the data processing section 3.

Furthermore, when a figure correction command is given through the input unit 2, the specified 0 point is corrected by the above correction amount and moved to point 02 shown in Fig. 7 0)), and the entire figure is corrected and displayed on the screen. (S7).

Therefore, arbitrary figure corrections can be made with simple operations.

Next, the procedure for creating CAD/CAM work data using the graphic processing device l according to an embodiment of the present invention will be explained in the order of boxes R1, R2, . . . with reference to FIG. do.

First, predetermined initial settings are performed (R1).

Then, when predetermined initial values are set (R2, R3) and the menu is selected (R4), the next box R5 appears on the screen, ie, "Read parts", "Read work", and "Read teaching data".

A list is displayed that allows you to select from... to "End".

For example, when using it for figure modification processing as a CAD system, select "Read parts" in box R5,
The part graphic data to be corrected is read from the storage unit 5.

Then, return to box R4 "Menu selection" again,
If you want to modify the entire part shape, select box 9 R5d.
Select "r Parametrics (Overall)".

Thereafter, the entire figure is corrected as shown in FIG. 5 or 6, for example, and the process returns to box R4, where "register parts" in box R5f is selected, and the corrected figure data is registered.

Then, when the user returns to box R4 and selects "End" in box R5i, the process moves to box R7, where a predetermined end process is performed and the correction process is completed.

When used for creating CAD/CAM work data, box R5I is added to the above-mentioned processing.

The workpiece shape is corrected by drawing the shape of the workpiece by "reading the workpiece," or the teaching data of the robot is corrected by performing the "reading of the teaching data" shown in box R5.

If you want to partially correct a figure as shown in Figures 4, 7, and 8, select box R5゜``Parametric (partial)'' instead of selecting box R5゜``Parametric (whole)''. This is done by making a selection.

〔Effect of the invention〕

According to the present invention, in a graphics processing device for a computer-aided design system that draws and processes graphics on a display screen according to graphics configuration parameters set by drawing commands and data input, a modification area specifying means for designating a modification area of the graphics; a correction parameter specifying means for specifying correction parameters such as a correction reference point, a correction axis (correction point), and a correction amount of a figure within the area specified by the correction area specifying means; A figure processing device is provided, comprising figure modification means for modifying the figure configuration parameters of , using the modification parameters specified by the modification parameter designation means, and drawing the entire figure. .

Therefore, the specified modification of the figure displayed on the screen can be easily performed.

Therefore, it is possible to easily draw a desired figure.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a graphic processing device according to an embodiment of the present invention, FIG. 2 is a flowchart showing a processing procedure in the graphic processing device, and FIG. 3 is a CAD
/A tree structure chart when creating work data, Figures 4, 5,..., Figure 8 are schematic diagrams showing the graphic processing process of the graphic processing device, and Figure 9 is a diagram of the conventional diagram. FIG. 6 is an explanatory schematic diagram of an example of drawing a Coban-shaped hole figure using the figure processing method. [Explanation of symbols] ■...Graphic processing device 2...Input section 3...Data processing section 4...Display section 5...Storage section.

Claims (1)

[Scope of Claims] 1. In a graphics processing device of a computer-aided design system that draws and processes graphics on a display screen according to graphics configuration parameters designated by a drawing command or data input, a modification area that specifies a modification region of the graphics. a specifying means; a correction parameter specifying means for specifying correction parameters such as a correction reference point, a correction axis (correction point), and a correction amount of a figure within the area specified by the correction area specifying means; modifying the figure configuration parameters within the designated area using the modification parameters specified by the modification parameter designation means;
1. A graphic processing device comprising: graphic modification means for drawing an entire graphic.