JP2001014491A - Three-dimensional shape data processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional(3D) shape data processing system with which a 3D shape can be generated as intended by reading text data outputted by the other 3D shape data processing system and the burden of a user therefor can be reduced as well. SOLUTION: In the 3D shape data processing system capable of generating and displaying the 3D shape data from the text data, the 3D shape data are generated from the text data by a 3D shape data generator 3, the 3D shape is displayed on a graphics display device 4, the text data are displayed on a text display device 2, the 3D shape data generator 3 makes the text data correspond to 3D shape data for each shape element and store them into a corresponding data storage device 5 and when the 3D shape data of a shape element at one part of the 3D shape can not be generated or are abnormally generated, the display pattern of the character string of the shape element in the text data displayed on the text display device 2 is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a three-dimensional CAD / C
Involved in 3D shape data processing systems that support 3D shape design such as AM / CAE / CG systems.
A three-dimensional shape created by another three-dimensional shape data processing system is displayed on a graphics display device using three-dimensional shape data generated from text data expressed in a text file format, and the text data is displayed on a text display device. The present invention relates to a three-dimensional shape data processing system to be displayed in the following.

[0002]

2. Description of the Related Art Conventionally, a three-dimensional CA that supports various design tasks using a graphics display device and a computer.
In a three-dimensional shape data processing system such as a D system,
By transferring a three-dimensional shape created by one three-dimensional shape data processing system to another three-dimensional shape processing system, the three-dimensional shape data can be shared and used effectively. In such a three-dimensional shape data processing system, text data expressing a three-dimensional shape in a text file format is created, and this text data is converted to another three-dimensional shape data.
The three-dimensional shape data processing system, which has passed the text data to the three-dimensional shape data processing system, generates three-dimensional shape data from the text data and displays it on a graphics display device. However, since three-dimensional shape data processing systems usually have their own geometric accuracy and expression format, it is difficult to completely automatically read text data output from many three-dimensional shape data processing systems. For this reason, a situation occurs in which a three-dimensional shape is not partially generated or is generated improperly. In such a case, conventionally, for example, a text file format is IGES (Initial Graphics Exchange S).
In the case of the (pecification) format, for an entity (Entity, element) that was not generated normally, the type of the entity and the pointer to the directory entry of the entity are displayed on the screen as an error report and the user Inform The user sees it and remodels the part that could not be created by himself, investigates the 3D shape data processing system that output the text file, or uses the type and pointer as clues in the IGES file. Search for the location of the problem and work to correct the IGES file. The CAD system disclosed in Japanese Patent Application Laid-Open No. H8-16654 has a text display device for displaying the text data in addition to the graphics display device, and performs graphic editing using the graphics display device. A text file corresponding to the figure is created, and the contents of the text file are displayed on a text display device. Then, the display mode of the graphic element corresponding to the character string displayed on the graphics display device is changed by designating a part of the character string in the text file on the text display device, and the character string in the text file and the An attempt is made to reduce the burden on the user in the collation work with the corresponding graphic element. For example, a drawing composed of a plurality of parts may be displayed on a graphics display device, a bill of materials of the plurality of parts may be displayed on a text display device, and the parts in the drawing and the parts in the bill of materials may be easily collated. It is.

[0003]

SUMMARY OF THE INVENTION
In the above-mentioned prior art shown in 8-16654,
In the case of a specific CAD system, it is merely a correspondence between text data and a figure, and a character string cannot be corrected on a text display device. That is, text data output from many three-dimensional shape data processing systems cannot be handled. Further, in the method of responding to the clues of the output type of the entity and the pointer, only an error report or the like is displayed on the screen, so that the operation of correction or the like imposes a heavy burden on the user. An object of the present invention is to solve the problems of the prior art described above, read text data output from many three-dimensional shape data processing systems, and generate a three-dimensional shape as intended, and use it for the purpose. Another object of the present invention is to provide a three-dimensional shape data processing system that can reduce the burden on the user.

[0004]

In order to solve the above-mentioned problems, according to the present invention, a three-dimensional shape created by another three-dimensional shape data processing system is expressed in a text file format. In a three-dimensional shape data processing system capable of generating three-dimensional shape data from data and displaying the three-dimensional shape on a graphics display device, the three-dimensional shape data is generated from text data and the three-dimensional shape data is generated on a graphics display device. And displaying the text data on a text display device, and associating the text data with the three-dimensional shape data for each shape element, and displaying the three-dimensional shape on the graphics display device. When the three-dimensional shape data of some of the shape elements cannot be generated or is generated abnormally, DOO display in the text data displayed on, and the configuration of changing the display mode of the character string is text data corresponding to the three-dimensional shape data of the shape element. According to the second aspect of the invention,
In the invention described above, a shape element designating means for designating a shape element on a graphics display device is provided, and a display mode of a character string as text data corresponding to the shape element designated by the shape element designating means is changed. Configured. According to a third aspect of the present invention, in the first or second aspect of the present invention, there is provided an editing means for editing a character string whose display mode has been changed, and the text including the character string edited by the editing means is provided. The three-dimensional shape is displayed again on the graphics display device based on the three-dimensional shape data generated from the data. Further, in the invention described in claim 4, in the invention described in claim 1, 2, or 3, the text file format is IGES format.

According to the first aspect of the present invention, three-dimensional shape data is generated from text data created by another three-dimensional shape data processing system, and based on the three-dimensional shape data. The three-dimensional shape is displayed on the graphics display device, the text data is displayed on the text display device, and the text data and the three-dimensional shape data are associated with each shape element. When displaying a three-dimensional shape, when three-dimensional shape data of a part of the three-dimensional shape cannot be generated, or when the three-dimensional shape is abnormally generated,
A display mode of a character string as text data corresponding to the three-dimensional shape data of the shape element in the text data displayed on the text display device changes. Claim 2
According to the invention described in the first aspect, a character string which is text data corresponding to the shape element designated by the shape element designation means, further comprising shape element designation means for designating a shape element on a graphics display device. Is configured to change the display mode. According to a third aspect of the present invention, in the first or second aspect, the three-dimensional shape is displayed again on the graphics display device based on the three-dimensional shape data generated from the text data including the edited character string. Is done. According to the fourth aspect of the present invention, the text file format is the IGES format.
The operation of the invention described in claim 2 or 3 is performed.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration block diagram of a three-dimensional shape data processing system showing one embodiment of the present invention. As illustrated, the three-dimensional shape data processing system of this embodiment reads a text file (text data) representing a three-dimensional shape in a text file format created by another three-dimensional shape data processing system. A file processing device 1 for analyzing the contents, a text display device 2 for displaying the contents of a text file passed from the file processing device 1, and a three-dimensional shape data based on the analysis result passed from the file processing device 1. Generate 3
A three-dimensional shape data generating device 3; a graphics display device 4 for displaying a three-dimensional shape passed from the three-dimensional shape data generating device 3;
A corresponding data storage device 5 for storing dimensional shape data in association with each shape element is provided. With such a configuration, the three-dimensional shape data processing system according to the present embodiment, when displaying the three-dimensional shape on the graphics display device 4, uses the three-dimensional shape data generation device 3 When the dimensional shape data cannot be generated or is generated abnormally, the text display device 2 changes the display mode of the character string that is the text data corresponding to the shape element. Hereinafter, each of the devices will be described in detail.

First, the file processing apparatus 1 reads a text file representing a three-dimensional shape in a text file format created by another three-dimensional shape data processing system as described above, and analyzes the contents. Then, the analysis result is passed to the three-dimensional shape data generation device 3. The syntax analysis of the text data is performed to facilitate the generation of three-dimensional shape data described later. Also, the file processing device 1
Is the contents of the text file (text data) and 3
The character string (text data) passed from the dimensional shape data generation device 3 is passed to the text display device 2. The three-dimensional shape data generating device 3 generates three-dimensional shape data based on the analysis result passed from the file processing device 1, and passes the generated three-dimensional shape data to the graphics display device 4.
The text data representing the three-dimensional shape and the generated three-dimensional shape data are stored in the correspondence table in the correspondence data storage device 5 in association with each shape element. In addition, a character string (text data) of a shape element for which generation of three-dimensional shape data has failed (cannot be generated) is passed to the file processing apparatus 1. The character string of the designated shape element passed from the graphics display device 4 is obtained from the correspondence table and passed to the file processing device 1. The graphics display device 4 includes a mouse or the like (not shown), displays a three-dimensional shape, and passes information indicating a shape element specified by a user using a mouse or the like to the three-dimensional shape data generation device 3. The text display device 2 displays the contents (text data) of the text file passed from the file processing device 1 and displays the character string passed from the file processing device 1 in the displayed text data. Is changed (for example, highlighted display). It also has a keyboard,
The user passes the contents of the text file edited by the keyboard to the file processing device 1.

FIG. 2 shows an operation flow of such a three-dimensional shape data processing system. The operation of this embodiment will be described below with reference to FIG. First, a system controller (not shown) generates a text file format 3D created by another three-dimensional shape processing system.
The text file of the dimensional shape is opened (read), and the text file is transferred to the file processing device 1 (step S1). Then, in the file processing device 1,
Parse the contents of the text file. For example, if the text file format is IGES (Initial Graphics Exchange Sp
ecification) format, this analysis means that the passed text data is converted into an I
It is organized for each entity (Entity), which is the concept of GES. In IGES, roughly, a text file is a directory entry part (Directory
Entry Section) and Parameter Data
Section). The directory entry section is a set of directory entries. Each directory entry corresponds to one entity and has a pointer to each parameter data section. Specific geometric information such as coordinate values is described in the parameter data portion,
In addition, if there is a related entity, it describes where the entity is described. The file processing device puts such entity data representing each entity in entity units, moves each to an address on the memory, and passes it to the three-dimensional shape data generating device 3 as an analysis result (step S2). ).

Next, the three-dimensional shape data generating device 3 generates a three-dimensional shape collectively for each shape element referred to in the present invention. For example, a free-form surface whose boundary is surrounded by a free curve corresponds to the “face” of this shape element and the “edge” surrounding it, and the entity of IGES is an entity type number 144 (element number 144, hereinafter referred to as Type 144). ), And the three-dimensional shape data generation device 3 generates a three-dimensional shape as follows (step S3). (1) Check the parameter data in the directory entry of Type144. (2) The parameter data includes a directory entry (Type114: spline surface) representing a generating surface (a surface before the boundary is enclosed) and a directory entry (Type142: parametric surface) representing a boundary curve. Since there is a pointer to the curve, examine each directory entry. (3) Check the parameter data in the Type 114 directory entry. (4) Since the parameter data includes numerical data representing the geometric information of the spline curved surface, the shape element “surface” is generated based on the numerical data. (5) Check the parameter data in the Type 142 directory entry. (6) Since the parameter data includes a pointer to a directory entry (Type 102: composite curve) representing an actual curve, the directory entry is checked. (7) Check the parameter data in the Type 102 directory entry. (8) The parameter data includes directory entries (Type 112:
Since there are multiple pointers to the spline curve, each directory entry is examined. (9) Check each parameter data in each type 112 directory entry. (10) Each of the parameter data includes numerical data representing the geometric information of the spline curve. Based on the numerical data, the shape element “edge” is generated, and the topological difference with the “surface” generated in (4) is obtained. Make an association. When the three-dimensional shape data is generated in this way, the three-dimensional shape data generating device 3 passes the three-dimensional shape data to the graphics display device 4 (step S3), and the graphics display device 4 converts the three-dimensional shape data. The three-dimensional shape is displayed based on the original (step S4). However, the shape elements that could not be generated are not displayed. The three-dimensional shape data generation device 3
When generating the three-dimensional shape data of each shape element, the text data extracted for each shape element for the generation is associated with the three-dimensional shape data for each shape element and stored in the corresponding data storage device 5. It is stored in the correspondence table. Also, 3
The character string (text data) of the shape element for which the generation of the dimensional shape data has failed (cannot be generated) is passed to the file processing device 1 (step S5).

Subsequently, the file processing device 1 transfers the contents (text data) of the text file and the character string (text data) of the shape element whose three-dimensional shape generation has failed to the text display device 2 (step S6). As a result, the text display device 2 displays the contents (text data) of the text file, searches the entire text data for the character string of the failed shape element, and changes the display mode of the character string corresponding to the failed shape element. (For example, reverse display)
(Step S7) (see FIGS. 3A and 3B). FIG. 3 (a)
Is a state in which a three-dimensional shape is displayed on the graphics display device 4, a front surface is not generated, and therefore, that surface is not displayed. FIG. 3B shows a state in which the contents of the text file are displayed on the text display device 2, and a state in which the text data (character string) corresponding to the front side is highlighted. . In addition,
In the above, the contents of the text file may be transferred to the text display device 2 and displayed at the next step after step S1. As described above, there is a character string whose display form has changed, and therefore, when the user has modified the contents of the text file by the editing means (step S
8), and thereafter returns to step S2, and returns to step S2.
Repeat. And if the above modification is appropriate, 3
There is no shape element for which a dimensional shape cannot be generated, and the image is normally displayed, for example, as shown in FIG. On the other hand, if there is no shape element that could not be generated, the reverse display is not performed in the steps up to step S7, and thus the text file is not edited (corrected) (step S8).
No). However, as shown in FIG. 4A, the generation result may be inappropriate. In the illustrated example, the ridge line indicated by the arrow originally has to coincide with the ridge line below it, but there is a gap. In such a case, in order to correct the text data of the shape element, the user specifies an inappropriate part using a mouse or the like as the shape element specification means (Yes in step S9). In this way, the graphics display device 4 acquires the position information of the inappropriate part passed from the mouse, and identifies the shape element of the inappropriate part based on the position information. Then, information indicating the shape element is passed to the three-dimensional shape data generation device 3 (step S10). Then, the three-dimensional shape data generation device 3 reads out the character string (text data) of the shape element from the correspondence table in the correspondence data storage device 5 and passes it to the file processing device 1 (step S11).

Subsequently, the file processing device 1 passes the character string (text data) of the shape element to the text display device 2 (step S12). Thereby, the text display device 2 searches the character string of the shape element from all the text data, and changes the display mode of the character string (for example, reverse display) (step S13) (see FIG. 4B). Thus,
If the contents of the text file have been modified by the user (Yes in step S8), the process returns to step S2 and repeats from step S2. Then, if the above correction is appropriate, a three-dimensional shape is generated as intended, for example, as shown in FIG.
Is displayed as intended. In this way, the text data output from the three-dimensional shape data processing system can be read to generate a three-dimensional shape as intended, and the burden on the user when correcting the three-dimensional shape is small.
A dimensional shape data processing system can be provided.

[0012]

As described above, according to the present invention,
According to the first aspect of the present invention, three-dimensional shape data is generated from text data created by another three-dimensional shape data processing system, and the three-dimensional shape is displayed on a graphics display device based on the three-dimensional shape data. In addition, the text data is displayed on a text display device, and the text data and the three-dimensional shape data are associated with each other for each shape element, and when the graphics display device displays the three-dimensional shape, the three-dimensional shape is displayed. Of some shape elements of
When the dimensional shape data cannot be generated or when the dimensional shape data is abnormally generated, a character string that is text data corresponding to the three-dimensional shape data of the shape element in the text data displayed on the text display device is displayed. Since the mode changes, inappropriate text data can be easily corrected, and therefore, text data output from many three-dimensional shape data processing systems can be read to generate a three-dimensional shape as intended. Therefore, the burden on the user for that purpose can be reduced. According to a second aspect of the present invention, in the first aspect of the invention, there is provided a shape element designating means for designating a shape element on a graphics display device,
Since the display mode of the character string which is the text data corresponding to the shape element specified by the shape element specifying means is configured to be changed, when the three-dimensional shape is displayed on the graphics display device, it is abnormally generated. Shape elements can be easily specified. According to a third aspect of the present invention, in the first or second aspect of the present invention, a graphics display device is provided with a three-dimensional shape data generated from text data including an edited character string.
Since the dimensional shape is displayed again, the correction result can be easily confirmed. According to the fourth aspect of the invention, when the text file format is the IGES format, the effects of the first, second, or third aspect of the invention can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a three-dimensional shape data processing system according to an embodiment of the present invention.

FIG. 2 is an operation flowchart of a three-dimensional shape data processing system according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a three-dimensional shape data processing system showing one embodiment of the present invention.

FIG. 4 is another explanatory diagram of the three-dimensional shape data processing system showing one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 file processing device 2 text display device 3 three-dimensional shape data generation device 4 graphics display device 5 compatible data storage device

Claims (4)

[Claims] 1. A three-dimensional shape data is generated from text data representing a three-dimensional shape created by another three-dimensional shape data processing system in a text file format, and the three-dimensional shape is displayed on a graphics display device. A three-dimensional shape data processing system capable of generating three-dimensional shape data from text data, displaying the three-dimensional shape on a graphics display device, and displaying the text data on a text display device, When the three-dimensional shape data is associated with each shape element, and the graphics display device displays the three-dimensional shape, if the three-dimensional shape data of some of the three-dimensional shape elements cannot be generated or abnormally, When generated, the third order of the shape element in the text data displayed on the text display device Three-dimensional shape data processing system being characterized in that a configuration to change the display mode of the character string is text data corresponding to the shape data. 2. The three-dimensional shape data processing system according to claim 1, further comprising a shape element designating means for designating a shape element on a graphics display device, wherein said text corresponds to the shape element designated by said shape element designating means. A three-dimensional shape data processing system, wherein a display mode of a character string as data is changed. 3. The three-dimensional shape data processing system according to claim 1, further comprising editing means for editing a character string whose display mode has been changed, wherein the text includes the character string edited by the editing means. A three-dimensional shape data processing system, wherein a three-dimensional shape is displayed again on a graphics display device based on three-dimensional shape data generated from the data. 4. The three-dimensional shape data processing system according to claim 1, wherein the text file format is an IGES format.
Dimensional shape data processing system.