JP2827122B2 - Figure processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a graphic processing system such as computer graphics and CAD (computer-aided design). The present invention relates to a graphic processing method capable of defining and deforming a graphic by setting and changing a value.

[Conventional technology]

Conventionally, in a CAD system, a graphic processing procedure is prepared as a program according to a data structure for each graphic element such as a line segment or a circle. A graphic processing procedure is also programmed for a complicated graphic formed by combining these graphic elements. For this reason, for a figure of a drawing whose standard differs depending on a company, an industry, or a country, such as a dimension line of a drawing of a mechanical drawing, a program is required as many as the number of standards. Testing and maintenance work are required. Furthermore, when trying to create a system specialized for an industry, it is often necessary to change the program.

One solution to this problem is disclosed in, for example,
There is a parametric figure processing method as described in JP-A-61-273670. In this graphic processing method, coordinate values of each element of an input graphic are registered as a function of a parameter, and a graphic is generated by an instruction by inputting a parameter value.

[Problems to be solved by the invention]

By the way, when trying to handle various figures in the CAD system, the size of the program increases as the number of figure types increases. Therefore, there is a limit to increasing the number of types of figures that can be handled. Also, when configuring a system that is specialized in accordance with the type of business or standard, there is a problem that the number of programs increases by the number of specializations, and waste of test and maintenance work for each program increases.

The present invention has been made to solve the above problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide a graphic / graphic processing method which enables to increase the number of graphic types which can be handled without increasing the size of a program, and which can easily develop a system specialized for each application. is there.

[Means for solving the problem]

In order to achieve the above object, according to the present invention, in a graphic processing system, a graphic shape and an attribute definition are registered in a recording medium in advance as structured procedure data, and a graphic shape and an attribute of a processing target graphic are determined. The method is characterized in that procedural data and parameters for the procedural data are input, and drawing processing is performed while sequentially reading and analyzing the procedural data registered in the recording medium in accordance with the input parameters.

Also, the procedure data registered in advance is stored in a replaceable recording medium of an external storage device.

[Action]

According to the means, the definition of the shape and the attribute of the graphic are registered in the recording medium in advance as structured procedure data, the selection of the procedure data for determining the shape and the attribute of the graphic to be processed and the input of parameters for the procedure data are performed. Then, according to the input parameters, the procedure data registered in the recording medium is read and the drawing processing is performed while sequentially analyzing the procedure data. Thereby, it is possible to cope with the processing of various figures, various figures are obtained, and by changing the values of the parameters unique to the figure with respect to the obtained figures, it is possible to freely deform and change the figures. it can. In this way, a procedure for drawing a figure is not incorporated as a program, but registered as procedure data, and a process of drawing while reading and sequentially analyzing the procedure data at the time of execution is performed. Therefore, since the procedure for each drawing is registered as data, the procedure can be easily changed or exchanged by the program.

In this graphic processing method, a graphic processing program is stored in a storage device in the form of corresponding procedural data in advance as description data using a graphic description language, and the procedural data for determining the shape of the graphic and the attribute of the graphic is stored. Various figures are output by selecting and inputting parameters for the selection. Also, by allowing another procedure to be called from a procedure, the data is structured, and a sophisticated and complicated graphic output is possible. In addition,
Since the procedural data is stored in a replaceable recording medium of the external storage device, the type of graphics that can be handled by the system can be changed only by replacing the storage medium of the external storage device, and the number of types of graphics that can be handled is not limited. That is, it is possible to easily specialize the system only by replacing the recording medium of the external storage device or the external storage device itself. It is possible to freely deform the figure by resetting or changing the parameters of the figure already output by the predetermined procedure data.

〔Example〕

Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a main part of a graphic processing system according to an embodiment of the present invention. In FIG. 1, 1 is an input unit, 2 is a procedure data analysis unit, 3a is a first procedure data storage unit that stores JIS dimension line procedure data, and 3b is an ANSI dimension line procedure data. A second procedure data storage unit, 4 is a graphic data development unit, 5 is a graphic data storage unit, and 6 is a graphic data display unit.

From the input unit 1, the name of the procedure data and parameters required by the procedure data are input. The procedure data analysis unit 2 receives the parameters input by the input unit 1, reads out the procedure data for drawing from the first procedure data storage unit 3a or the second procedure data storage unit 3b, and converts the parameters as necessary. Reference and analyze the instruction. The graphic data developing unit 4 creates graphic data according to the result of analyzing the command by the procedural data analyzing unit 2. The created graphic data is stored in the graphic data storage unit 5, sent to the graphic data display unit 6, and output to an external output device such as a display screen.

In the graphic processing system of this embodiment, as shown in FIG. 1, by switching between the first procedure data storage unit 3a and the second procedure data storage unit 3b, for example, JIS
(Japan Industrial Standards) Drafting procedure data using dimension lines and ANSI (American National
(Standards Institute: American National Standards Institute) It is possible to change the drafting procedure data that can be handled separately with the processing with the drafting procedure data using dimension lines. Further, as procedure data storage units, for example, a third procedure data storage unit, a fourth
By preparing a large number of procedure data storage units such as a procedure data storage unit,..., A variety of figures can be handled.

An example in which the graphic processing system of the present embodiment is applied to a dimension line graphic drawing system will be described.

FIG. 2a and FIG. 2b are views for explaining the difference in the type of dimension line to be entered in mechanical drawing. FIG. 2a is a diagram showing a figure in which a JIS dimension line is written in a rectangular figure, and FIG.
FIG. b is a diagram showing a figure in which ANSI dimension lines are drawn in a rectangular figure. First of JIS dimension line as procedure data storage
If the procedure data storage unit 3a is connected, dimensions of the JIS standard as shown in FIG. 2a are developed and output. Here, as the connected procedure data storage unit, for example, ANSI
When the dimension line is output after switching to the second procedure data storage unit 3b for dimension lines, an ANSI standard dimension line as shown in FIG. 2b is developed and output.

FIG. 3 is a flowchart for explaining the flow of processing of the graphic processing system according to the present embodiment. This will be described with reference to FIG. Here, first, in step 31, the system is initialized, and then, in step 32, it is determined whether or not the input procedure data has ended. If the data has ended, the processing is terminated. If the data is not over, in the next step 33, one data is read from the connected procedure data storage unit, and in step 34, the procedure data analysis processing is performed. When the analysis of the procedural data is completed, in the next step 35, graphic data development processing is performed. Next, returning to step 32, the processing of steps 32 to 35 is repeated until the input procedure data is completed.

FIG. 4 is a flowchart illustrating a connection process of a procedure data storage unit connected to the procedure data analysis unit.
This will be described with reference to FIG. In this process, first, in step 41, it is determined whether or not the instruction input of the dimension line of the parameter input from the input unit is a JIS dimension line. J
If it is an IS dimension line, the process proceeds to step 42, where a file containing JIS dimension line definition data (procedure data) is stored.
Specify as procedure data storage. If it is not a JIS dimension line, the process proceeds to step 43, where the file containing the definition data of the ANSI dimension line is designated as the procedure data storage unit. Then, the process proceeds to a step 44, wherein the procedure data analysis unit reads the procedure data from the designated procedure data storage unit, and ends this processing. Then, in order to proceed with the next process, the process returns to, for example, a main routine as shown in FIG.

FIG. 5 is a view for explaining an example of definition of practical dimension lines in the graphic processing system of the present embodiment. Fifth
Each parameter defined when a JIS dimension line is added to a processed drawing will be described with reference to the drawings. In FIG. 5, P1 and P2 indicate measurement points, and P3 indicates a dimension numeral entry position. L1
Is the length of the dimension arrow, L2 is the length of the extension of the dimension extension line, and L3 is the length of the interval between the measurement point and the dimension extension line. Also, TH is the inclination angle of the dimension auxiliary line, FI is the opening angle of the arrow, H is the height of the dimension numeral character, and V is the dimension measurement direction. In order to define the shape of the JIS dimension line as shown in the figure, the shape of the dimension line is defined by giving these 10 data as parameters as coordinate point data, real number data, and vector data. That is, P1, P2, and P3 are L1, L2, L as coordinate point data.
The shape of the dimension line is defined by giving 3, TH, FI, H as real data, V as vector data, and these 10 data as parameters.

FIG. 6 is a diagram showing a program example of the dimension line definition shown in FIG. In this example of a program, a figure shape and the like are defined using a programming language similar to the BASIC language as an input method of a parametric figure definition. As described above, the definition of the shape of the graphic and the attribute of the graphic to be registered in the recording medium are described and registered as structured procedure data.

As described above, according to the present embodiment, in the graphic processing system, the drawing processing of the graphic can be registered and used as procedural data independent of the program, and the following effects can be expected.

(1) Since a graphic description language can be used as a graphic definition method, a complicated graphic using a control structure such as conditional branching or repetition can be defined.

(2) As a method of inputting a graphic description language, an arbitrary method such as interactive graphic definition or graphic definition in a format similar to an existing program language can be used by using a program for converting the graphic description language. .

(3) In addition to a real number type, a coordinate point and a character string can be used as a parameter type, and a variable number of parameters can be used.

As mentioned above, although the present invention was explained concretely based on an example, the present invention is not limited to the above-mentioned example.
It goes without saying that various changes can be made without departing from the scope of the invention.

〔The invention's effect〕

As described above, according to the present invention, it is possible to register and use graphic drawing processing as procedural data independent of a program, so that efficient structuring is possible without enlarging the program. Can define simple shapes.
Further, the graphic processing system can be specialized for a specific use without changing the program.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a main part of a graphic processing system according to an embodiment of the present invention. FIGS. 2a and 2b are diagrams for explaining the difference in the types of dimension lines to be entered in mechanical drawings. FIG. 3 is a flowchart for explaining the processing flow of the graphic processing system according to one embodiment of the present invention, and FIG. 4 is a flowchart for explaining a connection processing of a procedure data storage unit connected to a procedure data analysis unit. is there. FIG. 5 is a view for explaining an example of definition of practical dimension lines in the graphic processing system according to one embodiment of the present invention. FIG. 6 is a view showing a program example of the dimension line definitions shown in FIG. It is. In the figure, 1 ... input unit, 2 ... procedural data analysis unit, 3a, 3
b: Procedure data storage unit, 4: Graphic data development unit,
5: Graphic data storage unit, 6: Graphic data display unit.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-72276 (JP, A) JP-A-62-175871 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G06F 17/50 G06T 1/00

Claims (2)

(57) [Claims] In a graphic processing system, a definition of a shape of a graphic and an attribute of the graphic are registered in advance in a recording medium as structured procedure data, and procedure data for determining the shape of the graphic to be processed and the attribute of the graphic are determined. And inputting parameters corresponding thereto, and performing drawing processing while reading and sequentially analyzing procedural data registered in the recording medium in accordance with the input parameters. 2. The graphic processing method according to claim 1, wherein the procedure data registered in advance is stored in an exchangeable recording medium of an external storage device.