JPH0433063A - Moving / copying system for cad system - Google Patents

Abstract

PURPOSE:To set a form as the object of movement at an arbitrary target position in a desired posture by setting a reference point for positioning a to the form as the object of movement and designating an angle to be formed between a linear element constituting the form and the other linear element drawn on a graphic display. CONSTITUTION:An operator sets a reference point P for positioning at one point of a form F as the object of movement and by setting, inputting a moving position Q of the reference point P for positioning and selecting a linear element l' constituting the form F and another linear element l drawn on the display, an angle theta to be formed between the both linear elements is designated. A microprocessor calculates the rotational amount of the form F based on the angle theta to be formed between the both linear elements and calculates the parallel moving amount from the reference point P for positioning and the moving position Q. Then, a transformation matrix is formed according to the rotational moving amount and the parallel moving amount, and the transformation matrix is multiplied to the position data of the form so as to automatically draw the moved form. Thus, without requiring complicated input processing or manual calculation, the form as the object of movement is drawn at the arbitrary target position in the desired posture.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a movement/copying method in a CAD system.

2. Description of the Related Art A moving/copying method in which a shape drawn on a graphic display is selected and a position to be moved or copied is specified, and the selected shape is translated in parallel to an arbitrary position and drawn. It is already publicly known.

In addition, by selecting the shape drawn on the graphic display, setting the center of rotation at an arbitrary position on the graphic display, and inputting the rotation angle, the selected shape will be selected by the rotation angle based on the rotation center. A moving/copying method is also known in which a rotated shape is drawn.

Problems to be Solved by the Invention However, according to these conventional techniques, when one shape is to be translated and rotated, - the shape to be moved or copied is first selected and the necessary After inputting data and performing either parallel or rotational movement, select the moved or copied shape again, re-input the data, and then perform the other rotational or rotational movement. It has the disadvantage that it requires processing, and shape selection and data input operations are cumbersome.

In addition, in order to perform rotational movement using the above movement/copying method, the operator must calculate and input the rotation angle from the current position of the shape to be moved or copied to the desired movement/copying position. Therefore, complex manual calculations are required in order to rotate the shape to be moved or copied so that it is at a specific angle with respect to the coordinate axes or other shapes, and calculation errors are likely to occur. There are also problems.

Therefore, an object of the present invention is to eliminate these drawbacks of the prior art, and to move or copy a shape to any target position in a desired posture without the need for troublesome input processing or complicated manual calculations. The object of the present invention is to provide a movement/copying method in a CAD system that allows accurate drawing.

Means for Solving the Problems The moving/copying method of the present invention sets a positioning reference point at one point of a shape to be moved or copied, sets and inputs the movement position of the positioning reference point, and By selecting one of the linear elements making up the shape and one of the other linear elements drawn on the graphic display and specifying the angle to be formed by both linear elements, the microprocessor of the CAD system A transformation matrix is created from the amount of rotation of the shape obtained from the power angle and the amount of translation from the positioning reference point to the movement point, and the position data of the shape is multiplied by the transformation matrix to move or copy the shape. The above objective was achieved by automatically drawing the subsequent shape.

The operator sets a positioning reference point at one point of the shape to be moved or copied, sets and inputs the movement position of the positioning reference point, and selects one of the linear elements constituting the shape and the graphic display. Select one of the other linear elements drawn above and specify the angle that both linear elements should form.

The microprocessor of the CAD system determines the amount of rotation of the shape based on the angles to be formed between the linear elements. In addition, the amount of parallel movement is determined from the positioning reference point and the movement position of the positioning reference point, a conversion matrix is created from these rotational movement amounts and parallel movement amounts, and the position data of the above shape is multiplied by the conversion matrix. automatically draws the shape after the shape is moved or copied.

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

FIG. 2 is a block diagram showing the main parts of an automatic programming device constituting a CAD system according to an embodiment, in which 10 is a microprocessor (hereinafter referred to as CPU), and 11 is a ROM that stores a control program for the automatic programming device.
, 12 is a RAM for storing system programs and various data loaded from the floppy disk 17;
3 is a keyboard, 14 is a CRT display device (hereinafter referred to as CRT) as a graphic display, 15 is a tablet device, 16 is a disk controller, 17 is a floppy disk, 18 is a plotter for outputting created drawings, and 19 is a printer. Each of these elements is communicated via a bus 20.

The tablet device 15 has a screen corresponding area 15a and a menu table 15b, and by moving the tablet cursor 15c within the screen corresponding area 15a and moving the graphic cursor on the CRT 14, the shape displayed on the CRT 14 can be changed. Various menu items can be picked by picking an arbitrary point on an element or shape or by moving the tablet cursor 15c on the menu table 15b.

Since the general functions of this type of automatic programming device and the usual design method using the same are already known, the explanation will be omitted, and the following will refer to a flowchart showing the main parts of the move/copy process stored as a system program. Next, the moving/copying method of this embodiment will be explained.

To determine whether to move or copy the shape using the move/copy process (see FIG. 1), select the "Move/Copy" item from the menu table 15b by operating the tablet device 15, and then select "Move" or "Copy". The difference between "move" and "copy" is that the data and display output of the shape itself selected to be moved or copied can be moved or - The only difference is whether to delete or retain the data after the copy process is executed.

The system program for moving/copying processing and the pre-designed shape data have already been stored on the floppy disk 17.
It is assumed that shape F and shape G are read into AM12 and drawn on the display screen of CRT14 as shown by solid lines in FIG. Align the upper left end point P of shape F with the upper right end point Q of shape G, and place shape F and shape G on the right side of shape G.
A case will be described in which the shape F is moved and arranged so that the angle formed by the shape F becomes θ.

CPU that started the movement/copying process to move the shape
10 first displays a message for selecting the shape to be moved (hereinafter referred to as the moving shape) on the display screen of the CRT 14, for example, ``Please pick the shape to be moved with the graphic cursor.'' Step S1)
, enters the standby state waiting for the operator's big operation (
Step S2).

The operator refers to the message on the CRTl4, operates the tablet device 15 to move the graphic cursor on the CRTl4, and picks a representative point (not shown) of the shape F.

The pick operation by the operator is detected in step S2 of the movement/copying process, and the CPU 10 stores the shape F in the RAM 12 as the shape to be moved (step 83
).

Next, the CPUI O executes a step to display a message for setting a positioning reference point on the moving shape, for example, ``Pick a point on the shape to be moved with the graphic cursor and set the positioning reference point.'' S4)
, enters a standby state waiting for a pick operation by the operator (
Step S5).

In the pick operation for setting reference points for positioning, among the singular points characterized by the end points of the elements that make up the moving shape, the centers of circular arcs, and the intersections of elements, the singular point closest to the position where the pick operation is performed is selected. By automatically picking a nearby point mode, a point on the moving shape is automatically specified in response to an operator's operation.

In this case, it is necessary to align the upper left end point P of the moving shape F with the upper right end point Q of the shape G, so the operator needs to
Referring to the message Tl4, operate the tablet device 15 to move the graphic cursor on the CRTl4, pick the vicinity of the upper left end point P of the moving shape F, and set it as the positioning reference point.

The pick operation by the operator is detected in step S5 of the movement/copying process, and the CPU 10 stores the upper left end point P as a reference point for positioning in the RAM 12, and stores its coordinate value X.
= Four Roro, Roro.

Y=Rororo, Roro is displayed on the CRTl4 (step S6).

Next, the CPU 10 sends a message to set the position of the positioning reference point after the movement (hereinafter referred to as the movement position), for example, ``Pick a point corresponding to the position of the positioning reference point after the movement with the graphics car crane. "Please set the post-movement position" is displayed (step S7), and the machine enters a standby state waiting for a pick operation by the operator (step S8).

In the case of a pick operation to set a movement position, as in the case of a pick operation to set a reference point for positioning, the singular point closest to the position where the pick operation was executed is automatically picked by processing in the nearby point mode. It is supposed to be done.

In this case, it is necessary to align the positioning reference point P with the upper right end point Q of the shape G, so the operator
4, operate the tablet device 15 to move the graphic cursor on the CRT14,
Pick the area near the upper right end point Q of the shape G and set the movement position to this position.

The pick operation by the operator is detected in step S8 of the movement/copying process, and the CPU 10 stores the upper right end point Q as the movement position in the RAM 12, and its coordinate value X=Rororo, Roro.

Y=Rororo, Roro is displayed on the CRT 14 (step S9).

Next, the CPU 10 sends a message indicating the selection of a movement method and the operating procedure for implementing each movement method, for example, "
When performing a movement that includes rotation, use the graphic cursor to pick one of the linear elements that make up the shape to be moved and set the rotation angle setting line. To perform only parallel movement, press the NL key on the keyboard. " is displayed (step 510), and enters a standby state waiting for selection operation by the operator (step 811).
~ loop processing of step 512).

In this case, the angle between the moving shape F and the shape G does not match the target angle θ, and moving shape F cannot be moved to the desired position even if it is translated in parallel, so it is rotated to the moving shape F. need to be added.

Therefore, the operator refers to the message on the CRT 14 and picks one of the linear elements (hereinafter referred to as the rotation angle setting line) constituting the movement shape F with a graphic cursor in order to perform movement including rotation. In this case, the angle formed by the moving shape F and the shape G can be easily represented by the linear element l' that constitutes the moving shape F and the linear element l that constitutes the shape G (rotation angle setting reference line described later). Therefore, it is desirable to select the linear element l' as the rotation angle setting line, but other linear elements may be selected. However, arcuate elements whose angles are difficult to specify (not possible in the example) must not be selected.

The element pick operation by the operator is detected in step S12 of the move/copy process, and the CPU 10 performs a step to determine whether the selection of the rotation angle setting line is appropriate and whether an arc element or the like has been picked by mistake. 513), if the selected rotation angle setting line is appropriate, the linear element l' that becomes the rotation angle setting line is stored in the RAM 12 (step 514).

Next, CPU10 sends a message to select a linear element other than the moving shape (hereinafter referred to as rotation angle setting reference line),
For example, please display "Pick one of the linear elements excluding the shape to be moved with the graphic cursor and set the rotation angle setting reference line" (step 515).
, enters a standby state waiting for selection operation by the operator (step 516).

In this case, it is necessary to align the positioning reference point P of the moving shape F with the position of the upper right end point Q of the shape G, and to place the moving shape F on the right side at a predetermined angle θ with respect to the shape G.
Since the linear element l' of the moving shape F has already been selected as the rotation angle setting line, it is desirable to select the linear element l of the shape G as the rotation angle setting reference line. Therefore, the operator refers to the message on the CRT 14, picks the vicinity of the linear element l forming the shape G with the graphic cursor, and selects the linear element l as the rotation angle setting reference line.

The pick operation by the operator is detected in step S16 of the movement/copying process, and the CPU 10 stores the linear element l as the rotation angle setting reference line (step 517).
Next, the rotation angle setting line β is set with respect to the rotation angle setting reference line l.
A message for inputting the angle that ′ should be displayed, for example, ``Please enter the rotation angle of the shape to be moved as the angle that the rotation angle setting line should make with the rotation angle setting reference line.'' is displayed. (step 518), and enters a standby state waiting for an input operation by the operator (step 519).

In this case, the linear element l' of the moving shape F is selected as the rotation angle setting line, and the linear element 1 which is a part of the shape G
is selected as the rotation angle setting reference line, so in order to set the angle between the moving shape F and the shape G to be θ, just input the angle θ that the moving shape F should make with the shape G as is. . Then, the operator refers to the message on the CRT 14, operates the numerical keys on the keyboard 13, and numerically inputs the angle θ that the moving shape F should make with the shape G. Inside the system, rotation in the counterclockwise direction is defined as positive, and rotation in the clockwise direction is defined as negative, based on the intersection of the rotation angle setting reference line and the rotation angle setting line. Therefore, in the example shown in FIG. , θ are input as positive values.

The input operation by the operator is detected in step S19 of the movement/copying process, and the CPU 10 stores the angle θ input by the operator (hereinafter referred to as input rotation angle) and displays the value on the CRT 14 (step 520).
).

Next, the CPU 10 sets the positioning reference point P based on the relationship between the rotation angle setting reference line l and the rotation angle setting line l' stored in advance in the RAM 12, the input rotation angle θ, and the position data of the positioning reference point P. Find a matrix g that indicates the rotational movement that should be given to the moving shape F around is created and stored as a transformation matrix h (step 521).

The amount of rotational movement θ to be given to the moving shape F is the value obtained by subtracting the angle θ1 made by the rotation angle setting line l' with respect to the rotation angle setting reference line l from the input rotation angle θ. In order to clearly show the angular relationship between the rotation angle setting reference line l and the rotation angle setting line l', the parallel movement state of the moving shape F is shown by broken lines.

In the example shown in FIG. 3, the input rotation angle θ and the angle θ□· formed by the rotation angle setting line l' with respect to the rotation angle setting reference line l are both positive values, and θ, 1. Since θ is larger than θ, the amount of rotational movement θr=θ−θ1.・〉0
Therefore, the movement shape F is 1θr 1 in the positive direction centering on the positioning reference point P according to the matrix g indicating rotational movement.
be rotated. Further, as shown in FIG. 4, both θ and θ,1 are positive values, and θ1. If θ is smaller than θ, the amount of rotational movement θr=θ−θ1.・
<0, and the moving shape F is rotated by 1θr 1 in the negative direction about the positioning reference point P. θ and θ□
, both have negative values and θ is smaller than θ11, as shown in FIG. 5, the rotational movement amount θr=θ−θ
1. <0, and the moving shape F is rotated by 1θr in the negative direction about the positioning reference point P. As shown in FIG. 6, θ and θ are both negative values, and θ1. If θ is larger than θr=θ−θII'>O
As a result, the moving shape F is rotated by 1θr in the positive direction around the positioning reference point P, and as shown in FIG. 7, when θ is positive and θ, . ．．
>0, and the moving shape F is rotated by 1θr 1 in the positive direction about the positioning reference point P. Also, the 8th
As shown in the figure, when θ is negative, θ, and when 1 is positive, θ
= θ - θ,, <0, and the moving shape F is rotated by 1θr 1 in the negative direction around the positioning reference point P. In other words, the matrix g indicating rotational movement is rotated around the positioning reference point P. This movement amount θr is used to correct the angle between the rotation angle setting line l' and the rotation angle setting reference line l as θ.

Since the rotational movement matrix g is a rotational movement centered on the positioning reference point P, and the parallel movement matrix f is a matrix that moves the positioning reference point P in parallel to the movement position Q, these matrices are The conversion matrix h obtained by multiplication is a conversion matrix in which the rotation angle setting line l' forms an input rotation angle θ with respect to the rotation angle setting reference line l, and the positioning reference point P matches the movement position Q. .

The CPU l0 that created the transformation matrix h converts the moving shape F
The data at each position is multiplied by the transformation matrix h to obtain the shape F' after the transformation, which is stored in the RAM 12, and the shape F'
While drawing on the CRT 14 (step 522), R
The data of the moving shape F stored in the AM 12 and its display output are erased, and the moving process of the moving shape F is ended.

Therefore, even when moving and arranging a shape selected as a movement target using other shapes as a reference, the operator does not need to know the orientation of these shapes or the inclination between the shapes; Set a positioning reference point at one point of the shape selected as the target of movement, select the movement position, and select one of the linear elements (rotation angle setting line) of the shape selected as the movement target and the linear elements of the other shape. By simply selecting one (rotation angle setting reference line) and inputting the angle that both linear elements should form, you can accurately position the shape to be moved at any target position in the desired attitude. .

Note that there is no need to set specific conditions between the positioning reference point and the rotation angle setting line, and between the movement position and the rotation angle setting reference line. For example, in the example shown in FIG. Select linear element 1, / as the rotation angle setting line, and select the linear element of shape G as the rotation angle setting reference line! or 11 can also be selected. In addition, the moving shape F
It is also possible to select linear element l' as the rotation angle setting line and select linear element 12 of shape G as the rotation angle setting reference line, but in the example shown in FIG. This is not preferable because the rotation angle θ' must be calculated. Conversely, in the example shown in FIG. 3, the linear element l' that constitutes the shape F selected as the object of movement is at a specific angle θ' with the linear element 12 of the shape G.
If you want to move the shape F so that the rotation angle θ' itself becomes the desired rotation angle, select the linear element l' of the shape F as the rotation angle setting line, and move the shape Select the linear element 12 as the rotation angle setting reference line,
The rotation angle θ' should be input.

Normally, the rotation angle setting reference line is selected from linear elements other than the shape selected for movement, but the same linear elements of the shape selected for movement are selected as the rotation angle setting reference line and rotation angle setting line. Then, it is also possible to set the rotation angle based on the current position of the selected shape.

Further, the rotation angle setting reference line and the movement position may be selected from different shapes and the movement/copying process may be executed. for example,
In the example shown in FIG. 9, the moving shape F is selected as the object to be moved or copied, the positioning reference point P and the rotation angle setting line l' are set, and the moving position Q is set at the upper right end point of the shape G. On the other hand, select one of the linear elements 1 that constitutes another shape G' as the rotation angle setting reference line, and input the angle θ that should be formed between the rotation angle setting line 1' and the rotation angle setting reference line l. Then, the positioning reference point P of the moving shape F is positioned at the upper right end point Q of the shape G, and the linear element l' of the moving shape F and the linear element l of the shape G' form a desired angle θ. You can make movements like this.

In addition, in FIG. 9, when the value of the angle θ between the rotation angle setting line l' and the rotation angle setting reference line l is 06, that is, the moving shape F is parallel to the shape G'. The figure shows the shape F' when it is moved and placed.

When the operator operates the NL key according to the message displayed in step S10, the operation of the NL key is detected in step Sll of the movement/copying process, and the CPU 10 proceeds to step S23 to move the positioning reference point P to the position. A parallel movement matrix f for moving to Q is created, and the process moves to step 322, where a simple parallel movement process is executed.

Effects of the Invention According to the movement/copying method of the present invention, a shape to be moved or copied is selected, a positioning reference point is set at one point, and the position of the positioning reference point after movement or copying is determined. Input the settings, select one of the linear elements that make up the shape to be moved or copied, and one of the other linear elements drawn on the graphic display, and specify the angle that both linear elements should form. Since rotational movement and parallel movement are executed at the same time, there is no need to specify rotational movement and parallel movement separately and enter data.
Furthermore, regardless of the orientation of the selected shape, this shape can be rotated and moved at a desired angle with respect to other linear elements, making it possible to move or copy the shape based on the angle between the shapes. There is no need for calculations to determine the relative rotation angle of the shape to be moved or copied, simplifying the work of arranging shapes such as parts and facilitating the design work.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing the main parts of the moving/copying process in one embodiment of the present invention, FIG. 2 is a block diagram showing the main parts of the automatic programming device that constitutes the CAD system of the same embodiment, and FIG. The conceptual diagrams illustrating display examples of the graphic display, FIGS. 4 to 9, are schematic diagrams illustrating the positional relationship between one linear element of a shape to be moved or copied and another linear element. 10...Microprocessor (CPU), 11...
ROM, 12... RAM, 13... Keyboard, 1
4...Graphic display (CRT), 15.
...Tablet device, 15a...Screen compatible area, 15
b... Menu table, 15C... Tablet cursor, 16... Disk controller, 17... Floppy disk, 18... Plotter, 19... Printer, 20... Bus, F... Shape to be moved or copied, F'...shape after movement or copying, G...
・Other shapes, P...Positioning reference point, Q...Position after movement or copying of the positioning reference point, F'...One of the linear elements constituting the shape to be moved or copied,
! ...One of the other linear elements drawn on the graphic display, θ...The angle that the biparallel element should form, S
. . . Pick position for specifying directionality, θr . . . Rotation amount of the shape to be moved or copied, h . . . Transformation matrix. Third Ward No. 1

Claims (1)

[Claims] A positioning reference point is set at one point of the shape to be moved or copied, and the movement position of the positioning reference point is set and input, and the data is drawn on one of the linear elements constituting the shape and on the graphic display. By selecting one of the other linear elements and specifying the angle that both linear elements should form, the CAD system's microprocessor can:
A conversion matrix is created from the amount of rotation of the above shape obtained from the angle to be made and the amount of parallel movement from the positioning reference point to the movement point, and the position data of the above shape is multiplied by the above conversion matrix to move the above shape. Or a movement/copying method in a CAD system characterized by automatically drawing the shape after copying.