JPH0344772A - Graphic information producing method for graphic processor - Google Patents

Abstract

PURPOSE:To omit the complicated tasks and to improve the working efficiency by producing the graphic information on a new graphic based on the graphic information to be referred to and the information on the space between external form lines of the new graphic to the relevant graphic. CONSTITUTION:A CPU1 is prepared together with a keyboard 2, a digitizer 3, an external storage storing a system program, a design data file 5, a printer 6, a display device 7, and a memory 8 which stores temporarily the necessary one of those data stored in the file 5 for a due task. Then the graphic information on a new graphic is produced based on the registered graphic information to be referred to and the information on the space between external form lines of the new graphic to the registered one. Thus it is possible to omit the complicated tasks on the screen of a display device and to improve the working efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for creating graphic information in a graphic processing apparatus that designs printed circuit boards.

[Conventional technology]

2. Description of the Related Art Graphic processing apparatuses are already known, which are composed of a central processing unit, an input device, a display device, an output device, a storage device, etc. connected to the central processing unit, and perform printed circuit board design through interactive processing. When drawing a wiring pattern using this type of graphic processing device, a combination of circular arcs and straight lines are drawn while taking into consideration maintaining a predetermined spacing determined by design rules from adjacent wiring patterns, lands, etc. At this time, when drawing a wiring pattern with a predetermined line width, first imagine the center line of the turn, and then input the predetermined line width information to draw a wiring pattern with a predetermined line width. can be drawn.

[Problem to be solved by the invention]

By the way, in designing a wiring pattern, there are many processes related to already drawn figures.

For example, when creating a 'concentric circular arc pattern Bl outside the already registered circular arc pattern AI, as shown in Figure 1, the operator inputs an offset command to create a previously registered figure (i.e. circular arc). Turn A1) is designated, and the direction of the newly created pattern (ie, circular arc pattern Bl) is input using the cursor. Furthermore, the worker
Assuming the center line NBI of the newly created arc butter 7B□, input the distance d1 between it and the center line NA1 of the registered graphic pattern (arc pattern At). Then, the device creates a new arc pattern Bl. Similarly, when creating a new straight line pattern B2 parallel to the already registered straight line turn A2 as shown in FIG.
That is, designation of the straight line pattern A2) and direction input using the cursor are performed. Further, the operator assumes the center line NB2 of the newly created straight line pattern B2, and inputs the distance d2 between it and the center line NA2 of the registered graphic pattern (straight line) (turn A2). Then, the device creates a new straight line pattern B2.

Furthermore, when creating a circular pattern B3 outside the already registered circular land A3 as shown in FIG. 1 (Q), the operator calculates the radius RLN of the center line NB3 of this circular pattern B3, Instruction to create a circle, calculated radius RLN
, and the width WC of the circular pattern are input to the device, and the device creates a circular pattern B3. In addition, when creating a tangent pattern B4 that is in contact with the circle pattern A4 that has already been registered, as shown in Figure 1 (■), the operator calculates the radius Rc of the circular turn A4 in advance and creates the circle. The command and the calculated radius Rc are input into the device, and a circle Nl is first drawn as an auxiliary line. Next, the operator inputs a command to create a tangent line and the coordinates (XM, YM) of the base point of the tangent line, draws a tangent line Ll, and creates a circle N as an auxiliary line for the tangent line L1! Find the coordinates (XN, YN) of the intersection with

Then, when the operator inputs a command to create a straight line and the coordinates (XN, YN) + (XM, YM) of the starting point and ending point, the device creates a tangential turn B4. Similarly, when creating a turn B5 using a tangent line touching the circular land A5 that has already been registered as shown in Figure 1 (■), the operator should prepare the radius R of the circle N2 as an auxiliary line in advance.
After calculating L, a command to create a circle and the calculated radius RL are input to the device to first draw a circle N2. Next, the command to create a tangent and the coordinates of the base point of the tangent (XM r Y
M ) is input by the worker to draw a tangent L2, and that tangent L
2 and circle N2 as an auxiliary line (XN, YN)
seek. Then, the worker gives an instruction to create a straight line,
Coordinates of start point and end point (XN, YN), (XM, YM
), and the width W, the tangent pattern B5 is created by the device.

In this way, with conventional equipment, it is necessary to find the center line of the wiring pattern, which requires a lot of man-hours.
Moreover, since it is necessary to once draw a work line for later use after drawing, the work becomes complicated and the work efficiency is poor.

[Means to solve the problem]

In order to solve the above problems, this invention refers to already registered graphic information and creates new graphic information using the graphic information, and includes a central processing unit and an input device connected to the central processing unit. , comprising an output device, a display device, and a storage device,
In a graphic processing device that visually displays graphic information on a display device and creates graphic information while observing the graphic information, registered graphic information to be referenced and the outline of a new graphic with respect to the registered graphic are provided. The present invention is characterized in that graphic information regarding a new graphic is created based on information regarding intervals. Further, in the case of drawing a tangent line with reference to a registered figure, the present invention provides registered figure information to be referred to;
The present invention is characterized in that graphic information regarding the tangent, which is a new graphic, is created based on information regarding the base point position of the tangent to be drawn with respect to the registered graphic.

[For production]

Automatically calculate linear figure information by simply specifying the figure information to be referenced and inputting information about the outline spacing of the new figure for that figure information or, if the new figure is a tangent, the base point position of the tangent. Therefore, complicated operations on the screen of the display device can be omitted.

〔Example〕

Examples of the present invention will be described below.

FIG. 2 is a block diagram showing the overall configuration of a printed circuit board design apparatus suitable for carrying out the present invention, in which 1 is a central processing unit (CPU), 2 is a keyboard, 3 is a digitizer,
4 is an external storage device in which system programs are stored; 5
6 is a printer, 7 is a display device using a CRT, etc., and 8 is a design data file that stores the design data of the designed printed circuit board. 8 is a design data file that stores the necessary data from the design data file for work. It is a memory that temporarily stores data.

Board design using the printed circuit board design device is performed as follows. First, a command is given to load a system program from the keyboard 2, the program stored in the external storage device 4 is loaded into the CPU 1, and the device is started. Read desired printed circuit board design data from the design data file 5 and display the board shape on the display device 7;
While looking at the displayed figure, you can modify the figure or design a new figure through interactive processing.

Next, the operation of creating new linear graphic information by referring to registered graphic information according to the present invention will be explained with reference to FIGS. 3 and 4.

Figures such as wiring patterns and lands that have been designed are placed in the first
The graphic information shown in the table is registered and stored in the design data file 5. A wiring pattern that is a combination of straight lines and circular arcs is separated into graphic elements of straight lines and circular arcs and registered.

When a registered graphic to be referenced is designated with a cursor on the display device, the corresponding graphic information is read from the design data file. Using the keyboard and cursor, enter the distance G1 between the new figure and the registered figure, the placement direction f of the new figure relative to the registered figure, the relative position information, and the line width W for the figure to be newly designed. New graphic information is calculated based on the previously registered graphic information and the input information.

How to create this new figure will be explained with reference to FIGS. 3 and 4. FIG. 3 shows a process of creating a new graphic pattern by referring to already registered graphic patterns, and FIG. 4 shows a flowchart for realizing this process.

In the flowchart of Fig. 4, first in step #1, the operator selects to create a new figure pattern by inputting an offset or tangent command, then in step #2, the input command is Determine whether When it is determined in step #2 that an offset command has been input, the operator then specifies an already registered shape to refer to in order to create a new shape in step #3, and In step 4, set the distance G from the outline of the registered shape to the newly created shape.
and the line width W of the newly created figure. Then,
In step #5, the device determines whether the registered figure specified in step #3 is a land, an arc, or a straight line.

Here, as shown in FIG. 3, a case will be described in which an offset command is input and the registered figure is an arc pattern. In this case, the process proceeds to step #6, where the operator first specifies the arrangement direction of the newly created arc pattern B1 with respect to the already registered arc pattern A1 using a cursor.

Then, the device moves to this specified coordinate (X
E, YE). Then, in step #8, CP
U 1 takes out information regarding the already registered arc pattern Al from the design data file 5 to the memory 8 . This information includes the center coordinates (Xc, Yc) of the circular arc pattern Ax, radius Ro, starting angle θ1, ending angle θ2, and line width Wc. In step #9, the CPUI obtains this information and coordinates (XB,
Information C indicating the arrangement direction of the newly created arc pattern Br is calculated from YB). This arrangement direction information C is
When the coordinates (XgtYE) indicate a position inside the already registered arc pattern A□, it is +1-1'', and when it indicates a position outside, it is '+1''. And CPU1 is
In step #10, the newly created arc pattern B1
center coordinates (Xc, Yc), radius RON, starting angle θ11
The terminal angle θ2 and the line width W are calculated. Here, the radius RCN is calculated based on the following formula.

ROM=RO+[G+(W/2)+(WO/2)Co×C As shown in FIG. 3, the case where an offset command is input and the registered figure is a straight line pattern will be described next. In this case, the process proceeds from step #5 to steps #11 and #12, where, similarly to steps #6 and #7, the operator uses the cursor to specify the arrangement direction of the newly created straight line pattern B2, and the device This specified coordinate (X
E, Yg).

Furthermore, in step #13, the starting point coordinates (Xw/Y
l )・Take out the end point coordinates (X2, Y2) and line width W1 and store them in the memory 8, and in step #14 step #9
Similarly, information C indicating the arrangement direction of the newly created straight line pattern B2 is calculated from these pieces of information related to the straight line pattern A2 and the coordinates (Xg, Yg). This arrangement direction information C is the coordinate (Xa.

When YE) indicates the upward position of the already registered straight line pattern A2, it becomes "+1", and when it indicates the downward position, it becomes +11n. Then, in step #15, CP
U1 is the starting point coordinates of the newly created straight line pattern B2 (
XNI IYNI), the end point coordinates (XN2.YN2) and the line width wN are calculated. Here, when the new straight line pattern B2 is shifted only downward relative to the straight line pattern A2 as shown in FIG. 3, the starting point coordinates (XN1t Y Nt ) and the ending point coordinates (Xra.

YN2) is obtained as follows.

XNI = Xi, YN1=Y1+[G+-
(W/2)+(W!/2)ko×CXN2 = X2
, YN2=Y2+[G+(W/2)+(Wt/2)×C Further, as shown in FIG. 3, the case where an offset command is input and the registered figure is a land pattern will be described. In this case, step #5 to step #1
Proceeding to step 6, the center coordinates (XL, YL) and radius RL of land pattern A3 already registered in the design data file 5 are retrieved and stored in the memory 8, and the center coordinates of the newly created arc-shaped turn B3 are retrieved. The coordinates (XL, YL), radius RLN of the center line of the arc, and line width wLN are step #1
Calculated at 7. Here, the radius RLN of the center line of the circular arc is determined as follows.

RLN=RL+G+(W/2) On the other hand, if it is determined in step #2 of FIG. 4 that a tangent command has been input, the process advances to step #18. Step #1
In step 8, similarly to step #3, the operator specifies an already registered figure to be referred to in order to create a new figure. Further, in step #19, step #
6, the operator specifies the arrangement direction of the newly created straight line pattern B2 using the cursor. Then, in step #, the CPUI obtains the coordinates (XE, YE) indicating the arrangement direction of the newly created tangent line, and in step #
21, the operator selects the coordinates (XMI
Enter YM). Next, in step #ce, C
PU1 determines whether the specified figure is an arc or a land in step #18.

Here, if the arc pattern is h as shown in Fig. 3 (■), proceed to step #1 and input the information of the center coordinates (Xc, Yc), radius RO, and line width Wo of this arc pattern to the design data. It is extracted from the file and stored in the memory 8. Then, in step #24, the CPU 1 determines the coordinates ( XN, YN) and proceed to step #5. On the other hand, at step #shio,
If it is determined in step #18 that the specified figure is a land pattern As as shown in FIG. . Then, in step #n, the center coordinates (XL, KL) and radius RL of the land pattern A5 registered in the design data file 5 are extracted and stored in the memory 8. Next, at step # path, pass through the base point coordinates (XM, YM) and the center coordinates (XL, Y
Calculate the coordinates (XN, YN) of the intersection of the arc and the straight line that is closer to the coordinates (Xw, Yw) indicating the arrangement direction among the straight lines tangent to the circle with radius (L) and radius (I (L - W/2)) and proceed to step #1.

In step #5, the coordinates input in step #21 (
XMIYM), the coordinates (XNI YN) calculated in step #24 or #swamp, and the line width Wo taken out in step #o or the line width W input in step #A, the starting point of the tangent (XN .

YN), end point coordinates (XMIYM), and line width W are calculated.

Then, in step #4, step #10. :#:1
5. The data calculated in #17 or #5 is stored in memory 8.
Based on the stored data, the newly created figure in step # is displayed in step #6, and this flow ends. Therefore, in step #addition, the third
New color shapes B1 to B5 as shown in any of the figures ~■
is displayed.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to
When drawing a new wiring pattern etc. by referring to a registered figure, by specifying the figure to be referenced, the figure information is read out, and information about the read figure information and the outer line spacing of the new color shape for that figure. Since the graphical information regarding the new color shape can be automatically calculated and created based on the above, complicated work on the screen of the display device can be omitted and work efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating a conventional graphic pattern drawing method.
FIG. 2 is a block diagram showing the configuration of a graphic processing device suitable for carrying out the present invention, FIG. 3 is a diagram illustrating a graphic pattern drawing method according to the present invention, and FIG. 4 shows a graphic pattern drawing processing method. It is a flowchart. 1: Central processing unit, 2-: Keyboard, 3: Digitizer, 4: External storage device, 5: Design data file, 6: Printer, 7: Display device. (D) (E) 5 Figure (B) Funeral map Figure (A) CB) Figure (C) (E) Figure

Claims (1)

[Scope of Claims] 1. A central processing unit, an input device, an output device, a display device, and a storage device connected to the central processing unit, and graphic information is visually displayed on the display device, and the graphic information is visually displayed while being observed. A graphic processing device that creates graphic information is characterized in that graphic information regarding a new graphic is created based on previously registered graphic information to be referenced and information regarding an outline spacing of a new graphic with respect to the registered graphic. A method for creating graphic information in a graphic processing device. 2. Equipped with a central processing unit, an input device, an output device, a display device, and a storage device connected to the central processing unit, graphic information is visually displayed on the display device, and graphic information is created while observing this. In the graphic processing device, graphic information regarding the tangent line, which is a new graphic, is created based on the registered graphic information to be referenced and the information regarding the base point position of the tangent line to be drawn with respect to the registered graphic. A graphic information creation method in a graphic processing device characterized by: 3. Calculate the information regarding the intersection of the tangent and the registered figure based on the registered figure information, the information about the arrangement direction of the tangent to the registered figure, and the information about the base point position of the tangent, and calculate this 3. The method for creating graphic information in a graphic processing apparatus according to claim 2, wherein graphic information regarding the tangent is created based on information regarding the intersection point and information regarding the base point position of the tangent.