JPH0640338B2 - Extraction method of descriptive character information of CAD drawing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] Regarding a graphic processing system using a computer, the attribute data of the descriptive character information is used for the purpose of simplifying the operation of reading a large number of descriptive character information from a CAD drawing data file and creating a parts table. A storage priority number is added, the description character information is read from the CAD drawing data file by the processing unit, the storage priority number added to the attribute data is searched, and the description character information is arranged in the order indicated by the storage priority number. Then, the data is stored in the storage area.

[Industrial application field]

The present invention relates to a graphic processing system using a computer.

[Conventional technology]

Recently, a computer graphics processing system (hereinafter simply referred to as CAD) is widely used, and CAD is also used when designing various devices.

When a design drawing of a certain device is displayed on the CAD screen, it is possible to automatically read the descriptive character information about the component parts of the device displayed on the CAD screen and automatically create the parts table of the device. It is being appreciated.

4 (a) and 4 (b) are explanatory views of a conventional method for reading descriptive character information.

In the figure, 10 is a CAD drawing data file, and 20 and 30 are storage areas. The same symbols represent the same objects throughout the drawings.

Generally, CAD drawing data file 10 (hereinafter simply referred to as file
(10)) to read the descriptive character information to create a parts table, the descriptive character information of the component parts stored in the file 10 is first read by the reading program and stored in the storage area.
Store in 20.

The descriptive character information of the constituent parts is read in the normal order in which the descriptive character information of the constituent parts is described in the file 10.

Therefore, the descriptive character information of the components stored in the storage area 20 is arranged in the order of reading from the file 10, and the arrangement is not consistent. That is, it does not become a parts list. In order to form a parts table, it is necessary to rearrange these descriptive character information according to a certain logic.

Therefore, it is usually necessary to read from the file 10 by the read program and store it in the storage area 20, and then read the descriptive character information stored in the storage area 20 by the data editing processing program and rearrange it in the storage area 30.

There are two methods described below as methods for rearranging this.

(A) The internal code of the descriptive character is sorted and read in ascending or descending order and stored in the storage area 30.

(B) Sort by the coordinate position of the descriptive character, read it out, and store it in the storage area 30.

(B) The method using the internal code of the descriptive character is usually as follows. For example, if it is specified that the descriptive characters are composed of only alphabetic characters and numbers, the alphabetical characters have priority over the numbers, and when there are alphabetic characters, the order is A, B, and C, and when there are numbers, the numerical characters It is a method that defines as small order.

It is now assumed that the following data is stored in the storage area 20.

I. D210-1001-X001, b. D210-1001-X002, c. D210-2001-X005, d. D210-2001-X010, e. Parts with five names of A210-2001-X003 are used.

In the above example, since the first character of e is A and all other characters are D, the first data to be read is A210-2001-of e.
It is X003.

Next, since the first characters of A to D are all D, the second characters are compared. Since the second letter is a number, read from the smallest number. However, the second to fourth numbers are also the same. Since the fifth number is 1 for i and ro, and 2 for ha and d, i and ro have priority over ha and ni, and the last number in i and ro is 1 for i and 2 for ro , Lee has priority. Similarly, in Ha and D, the 11th number is 0 for C and 1 for D, so C has priority.

Therefore, the data is read out from the storage area 20 in the order of ho, a, b, c, d and stored in the storage area 30.

(2) The method based on the described coordinate position is a method in which the reading order is determined according to the coordinate position of the description character information.

As is well known, for each descriptive character information stored in the file 10, as shown in FIG. 4 (b), a character string (content of character),
Data such as coordinate position on the CAD screen, character length (how many characters), size (character size), and attribute data are described, and displayed on the CAD screen based on these information. The attribute data is not displayed on the CAD screen.

This coordinate is used as a key to determine the reading order. Since there are X-axis and Y-axis coordinates, for example, the one with the smallest X-axis value is read, and if the X-axis value is the same, the Y-axis value is read. Is read out and stored in the storage area 30.

[Problems to be solved by the invention]

However, there is a problem that the program must be operated twice because the data editing processing program rearranges both the method using the internal code of the descriptive characters and the method using the coordinates.

[Means for solving problems]

As shown in the principle diagram of FIG. 1, the above problem is caused by a means 1 for adding a storage priority number to the attribute data in the CAD drawing data file 10 in which the descriptive character information having the attribute data is stored. A process of reading the descriptive character information from the CAD drawing data file 10, searching the storage priority number added to the attribute data, arranging the descriptive character information in the order indicated by the storage priority number, and storing it in the storage area 20. It is solved by providing the part 2.

[Action]

According to the present invention, a storage priority number is added to the attribute data of the descriptive character information stored in the CAD drawing data file 10 by the adding means 1 in advance, and the descriptive character information is added from the CAD drawing data file 10 by the processing unit 2. To search the attribute data of the descriptive character information, arrange the descriptive character information in the order indicated by the storage priority number, and store it in the storage area 20.
To store.

〔Example〕

In the present invention, the storage priority number for sorting is stored in the attribute data for each descriptive character information.

FIG. 2 is a diagram showing an embodiment of the present invention.

FIG. 3 is an explanatory diagram of the present invention.

The operation of the present invention will be described below with reference to FIG.

(I) The attribute data of the descriptive character information stored in the file 10 is divided into three types by adding a storage priority number.

(1) Storage priority numbers are not added.

(2) The storage priority numbers 1 to N are given to those stored before the storage priority numbers are not added. However, N is an integer.

(3) Storage priority numbers * 1 to * N are added to those stored after the storage priority number is not added. However, the * mark can be any symbol, and the point is to distinguish it from (2).

(4) The added numbers 1 to N do not have to be consecutive numbers.

Now, it is assumed that the file 10 stores four pieces of descriptive character information of a, b, c, and d as shown below.

I. ABCDE (no storage priority number) b. HIKHL (storage priority number 1) c. OPQE (storage priority number * 1) d. XYZ (storage priority number * 10) The storage priority number as shown in parentheses above is added to these.

(Ii) Next, as in the conventional method, the descriptive character information is read from the file 10 in the described order and stored in the storage area 20.

(Iii) Next, the storage priority number of (1) to which the storage priority number is not added is set to 1000, and the storage priority number to which * is added is incremented by 1000. That is, * 1 → 1001, * 1
Set 0 → 1010.

The storage priority numbers 1 to N in (2) are not changed.

(Iv) Next, the attribute data of the descriptive character information stored in the storage area 20 is sorted from the smallest number to the largest number.

Therefore, as shown in the right end of FIG. Storage priority number 1 HIJKL d. Storage priority number 10 XYZ a. Storage priority number 1001 ABCDE C. They can be arranged in the order of storage priority number 1010 OPQR.

It is also possible to use the above-mentioned method in combination with (a) the method of using the internal code of the descriptive character and (b) the coordinate method of the prior art.

For example, in the method (a) using the internal code of the descriptive character described in the section of the prior art, the storage priority number 1,
When the storage priority number 2 is added to D, and the storage priority numbers are not added to A, B, and E, they are arranged in the order of C, H, D, E, B, and B.

The operation of the present invention will be described below with reference to FIG.

In the figure, 1 is an addition unit, 2 is a processing unit, 3 is a CAD screen, 3
a is a light pen, 3b is a keyboard, and 40 is a main controller.

The main control unit 40 is the main control unit of the CAD system, and it is assumed that a drawing is currently displayed on the CAD screen 3.

The descriptive character information displayed on the CAD screen 3 is hit by the light pen 3a, and the above-mentioned storage priority number is input by the keyboard 3b.

The adding means 1 is the light pen 3a and the keyboard 3b. It is also possible to input the storage priority number only with the light pen 3a without using the keyboard 3b.

When the keyboard 3b is operated after inputting the storage priority numbers for all the target descriptive character information, the main control unit 40 activates the processing unit 2.

The processing unit 2 reads all the above described descriptive character information from the file 10, searches the attribute data of each descriptive character information, reads out the descriptive character information in the order indicated by the storage priority number, and sequentially stores them in the storage area 20. .

〔The invention's effect〕

As described in detail above, according to the present invention, there is a great effect that the work of reading a large number of descriptive character information from a CAD drawing data file and creating a parts table can be simplified.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention. FIG. 2 is a diagram showing an embodiment of the present invention. FIG. 3 is an explanatory diagram of the present invention. 4 (a) and 4 (b) are explanatory views of a conventional method for reading descriptive character information. In the figure, 1 is an addition unit, 2 is a processing unit, 3 is a CAD screen, 3
a is a light pen, 3b is a keyboard, 10 is a CAD drawing data file, 20 and 30 are storage areas, and 40 is a main control unit.

Claims (1)

[Claims] 1. A CAD drawing data file (10) in which descriptive character information having attribute data is stored, and means (1) for adding a storage priority number to the attribute data.
And reading the descriptive character information from the CAD drawing data file (10), searching the storage priority number added to the attribute data, and arranging the descriptive character information in the order indicated by the storage priority number. A descriptive character information extraction method for a CAD drawing, comprising: a processing unit (2) for storing in a storage area (20).