CAD program

Abstract

To provide a CAD program that solves a problem that, in a conventional manner, when a drawing created by CAD is output in a predetermined output format, if the output format differs from a regulation of a submission destination, it is necessary to make a correction such as setting a size and a blank area to conform to the regulation, and when such correction is required, correction work is complicated and there is a risk of mistake occurring during the correction work.SOLUTION: The present invention has been made in view of circumstances, and provides a program or a device for outputting a drawing created by CAD in a desired output format.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a CAD program that outputs drawings created by CAD in a desired output format. [Background technology]

[0002] Traditionally, CAD (Computer Aided Design) has been used when designing and developing structures such as tunnels and roads. The design drawings created using CAD are then submitted to the client, and if the client requests it, the submitted design drawings are revised, and the design drawings are completed after going through this process.

[0003] Incidentally, many types of CAD software (also simply referred to as "CAD") are sold around the world, and the operational performance and output performance (output format) vary depending on the type of CAD software. Furthermore, the performance of CAD software has been improving year by year in recent years, and it now has functions such as creating 2D drawings linked to 3D data from the 3D data, and determining the optimal scale and paper size based on the actual dimensions of the structure, and outputting (displaying) the drawings in the optimal layout and size determined by the CAD software. The following prior art is known as conventional technology related to the output size of drawings created by CAD: [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 6-210993 Summary of the Invention [Problem to be solved by the invention]

[0005] When a drawing is output using the built-in output function of a certain CAD software, the output format (display position on the paper, display size, scale, etc.) may differ from the format specified by the client. In such cases, the drawing created with the CAD software must be converted to the format specified by the client and submitted. Furthermore, when creating a 2D drawing from 3D data of a structure, the 3D data and the 2D drawing can be output (displayed) in a linked state. However, in order to change the format of the 2D drawing created from the 3D data, this link must be removed (disassembled). In this disassembled state, if a design change is subsequently requested, the 3D data cannot be effectively utilized, and the drawing revision process becomes cumbersome, potentially leading to errors.

[0006] The present invention has been made in view of the above circumstances, and provides a program or device for outputting a drawing created by CAD in a desired output format. [Means for solving the problem]

[0007] The program of the first invention for solving the above-mentioned problems is: A CAD program that causes a computer to create a two-dimensional drawing of a target structure, a first step of setting a scale of the two-dimensional drawing of the target structure based on a predetermined specific paper size and the actual dimensions of the target structure; a second step of setting the view line of the drawing frame of the default paper size of the CAD to the outer frame line of the drawing frame of the specific paper size; a third step of setting a non-drawing area of ​​a predetermined specific width from the outer frame line of the drawing frame of the specific paper size to the inner periphery, and setting the inner area of ​​the non-drawing area as the drawing area; a fourth step of displaying a two-dimensional drawing of the target structure created by CAD in the drawing area of ​​the drawing frame of the specific paper size at the scale set in the first step; The present invention is characterized in that the following is executed.

[0008] This program allows users to set the scale of the structure's drawing, the paper size of the drawing, and the drawing range on the set paper in the desired format before outputting it. This minimizes the need for the tedious task of adjusting the output drawing to the format specified by the client. It also minimizes the chances of mistakes occurring when adjusting the drawing.

[0009] The program of the second invention is the program of the first invention, the computer has a data storage means for storing three-dimensional data of the target structure, the two-dimensional drawing is a plan view or a cross-sectional view showing a part or the whole of the three-dimensional data, The two-dimensional drawing output through the first to fourth steps is output in a state linked with the three-dimensional data.

[0010] According to this program, a computer stores three-dimensional data of a target structure, and creates two-dimensional drawings of plan views or cross sections showing part or all of the three-dimensional data based on the three-dimensional data. The two-dimensional drawings created through steps one through four are then output in the desired format while linked to the three-dimensional data. This means that when making design changes to the target structure, simply modifying the three-dimensional data automatically modifies the two-dimensional data, minimizing the effort required to modify the two-dimensional drawings when making design changes and reducing the occurrence of modification errors.

[0011] The program of the third invention is the program of the first or second invention, The method is characterized in that a fifth step is executed in which a title box describing information about the two-dimensional drawing to be displayed in the drawing area is displayed at a predetermined position in the drawing area.

[0012] This program includes a fifth step of displaying a title box indicating information about the drawing displayed in the drawing area in a predetermined position (e.g., the lower right corner) of the drawing area set in the third step. The contents of the title box can be added or modified as needed through other processes. This allows for a client's request to add a title box to the drawing, and allows the drawing to be output in the desired format.

[0013] Furthermore, the device of the fourth invention is a data storage means for storing three-dimensional data of the target structure; An apparatus having a CAD that creates a two-dimensional drawing that is a plan view of a part or all of the three-dimensional data of the target structure, a scale setting means for setting a scale of the two-dimensional drawing of the target structure based on a predetermined specific paper size and the actual dimensions of the target structure; a first layout setting means for setting a view line of a drawing frame of a default paper size of the CAD to an outer frame line of the drawing frame of the specific paper size; a second layout setting means for setting a non-drawing area of ​​a predetermined specific width from the outer frame line of the drawing frame of the specific paper size to the inner periphery, and setting the inner area of ​​the non-drawing area as the drawing area; a drawing output means for displaying a two-dimensional drawing of the target structure created by CAD in the drawing area of ​​the drawing frame of the specific paper size at the scale set by the scale setting means; The drawing output means outputs the two-dimensional drawing in a state linked with the three-dimensional data. It is characterized by:

[0014] Such an apparatus includes a storage means for storing three-dimensional data of a target structure, and a CAD system capable of creating two-dimensional drawings from the three-dimensional data of the target structure. It also includes a scale setting means for setting a scale on the drawing of the structure, a first layout setting means for setting a paper size, a second layout setting means for setting a drawing area, and a drawing output means for outputting (displaying) the two-dimensional drawing created from the three-dimensional data in the drawing area at the set scale. The two-dimensional drawing output by the drawing output means is linked to the three-dimensional data.

[0015] This makes it possible to minimize the need for the tedious task of adjusting drawings that have already been output to fit the client's specifications, and also to prevent mistakes that may occur when adjusting drawings. Furthermore, when making design changes to the target structure, modifying the 3D data automatically modifies the 2D data, minimizing the effort required to modify 2D drawings when making design changes and reducing the occurrence of correction errors. [Effects of the Invention]

[0016] According to the present invention, drawings created using CAD can be output in the desired output format, minimizing the effort required for adjusting and correcting drawings and reducing the occurrence of errors. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a diagram showing a 3D model of a civil engineering structure at a predetermined angle. [Figure 2] This figure shows a cross-sectional line of a 3D model of a civil engineering structure, and a cross-sectional view at the cross-sectional line in a standard output diagram. [Figure 3] FIG. 10 is a diagram showing a cross-sectional view at a cross-sectional line as a transformed output view. [Figure 4] 10 is a flowchart of a two-dimensional drawing output process. [Figure 5] 10 is a flowchart of an output format setting process. DETAILED DESCRIPTION OF THE INVENTION

[0018] Next, an embodiment of the present invention will be described using an example in which the present invention is applied to a device (computer) capable of creating drawings using CAD software (also simply referred to as "CAD"). [Example]

[0019] The computer device (also referred to as a "computer" or "device") of this embodiment is equipped with storage means capable of storing data and software, and the storage means stores three-dimensional data (3D model) of a civil engineering structure. The computer device of this embodiment is also equipped with CAD software, spreadsheet software, and the like as software. FIG. 1 shows a display screen 2 of a display device of the computer device. FIG. 1 also shows the display screen 2 on which a 3D model 11 (three-dimensional data) of a civil engineering structure created using CAD is displayed at a predetermined angle. Because the 3D model 11 is created as three-dimensional data, the 3D model 11 can be freely manipulated by rotating, disassembling, enlarging, or reducing the size of the 3D model 11 using a mouse or the like.

[0020] The civil engineering structure 11 shown in the 3D model 11 has a rectangular upper inclined surface 16 that slopes upward from the front end 12 to the rear end 13. At the left end of this upper inclined surface 16, a triangular left inclined surface 14 that slopes downward to the left is formed. At the right end of this upper inclined surface 16, a triangular right inclined surface 15 that slopes downward to the right is formed. The length of this upper inclined surface 16 from the front end 12 to the rear end 13 is designed to be 100 m, and the width of the front end 12 is designed to be 7 m.

[0021] FIG. 2 shows two drawings displayed on the display screen 2: a drawing (civil drawing 3) indicating which part of the civil engineering structure 11 a 2D drawing is to be created for, and a 2D drawing (civil drawing 4) created and output from a specified part of the 3D data of the civil engineering structure 11. The civil engineering drawing 3, surrounded by a drawing frame 25 in the lower left, is a drawing indicating which part of the civil engineering structure 11 a 2D drawing has been created for. The civil engineering drawing 3 displays an overall view of the civil engineering structure 11 seen from above, and a first transverse line X1 (a plane perpendicular to the ground) and a second transverse line X2 (a plane perpendicular to the ground) that indicate the transverse lines of the civil engineering structure 11.

[0022] The civil engineering drawing 4 (standard output drawing 4) enclosed by the drawing frame 31 in the upper right corner is a drawing (standard output drawing) output (displayed) using the standard output function of the CAD of this embodiment of the cross-sectional view (also called a "section view"; first cross-sectional view 21, second cross-sectional view 22) of the aforementioned civil engineering drawing 3 at the first cross-sectional line X1 and the second cross-sectional line X2. With the standard output function of the CAD of this embodiment, the outer frame 31 (paper size) is set to A1 size, a non-drawing area 52 with a width of 15 mm (standard width t) is set around the entire inside perimeter of the outer frame 31, and the area further inside is set as the drawing area 51 where the created drawings, etc. are displayed. The boundary line between this non-drawing area 52 and the drawing area 51 is called the view line 32. The view line 32 forms the perimeter of the drawing area 51 where the created drawings, etc. are displayed. In other words, the area inside the view line is the drawing area.

[0023] In addition, in the standard output drawing 4 of this embodiment, the scale of the drawing is set to 1 / 1000. In the lower part of the drawing area 51 of the civil engineering drawing 4 in FIG. 2, a first cross-sectional view 21, in which the civil engineering structure 11 is crossed by the first cross-sectional line X1 of the civil engineering drawing 3, is output (displayed). In addition, in the upper part of the drawing area 51 of the civil engineering drawing 4, a second cross-sectional view 22, in which the civil engineering structure 11 is crossed by the second cross-sectional line X2 of the civil engineering drawing 3, is output (displayed). Both cross-sectional views have a substantially trapezoidal cross section. When the civil engineering drawing 4 is printed on paper, it is printed on A1 paper size in the same format as that displayed on the display screen 2.

[0024] As such, there is no particular problem in understanding the design details of a structure when outputting (displaying) using the standard output function of CAD. However, when submitting design drawings of a structure to an external or internal party, there are cases where the output format (paper size, scale, width of non-drawing area, presence or absence of title box, etc.) is strictly regulated. If these regulations differ from the standard output drawing 4 (civil engineering drawing 4) output using the standard output function, the standard output drawing must be corrected and adjusted to conform to the regulations. This work is very time-consuming and can lead to errors.

[0025] Here, the first cross-sectional view 21 and the second cross-sectional view 22 (both 2D drawings) of the civil engineering drawing 4 (standard output drawing 4) are automatically created from 3D data and are linked to the 3D data (3D model 11). However, in order to change the scale of the linked standard output drawing 4 to conform to regulations, change the display position of the drawing, or modify or adjust the paper size or the range of the drawing area, it is sometimes necessary to unlink (disassemble) the output 2D drawings (first cross-sectional view 21, second cross-sectional view 22) from the 3D data (3D model 11). As mentioned above, design drawings are completed through repeated revisions. However, if revision instructions are received after submitting the 2D drawings created by unlinking them (either digitally or on paper), it becomes necessary to separately revise the 2D drawings and the 3D data (3D model), which creates a problem of cumbersome work and increased error-proneness.

[0026] In addition to the standard CAD output function, the computer device of Example 1 has an extension program (add-in) that converts drawings created by CAD (2D drawings created from 3D data) from the standard output drawing into a desired output format and outputs (displays) them. This extension program is called an "output format conversion program." By executing this output format conversion program (the output format setting process 200 described below), the computer can create a drawing at an appropriate scale in a predetermined drawing area (drawing position) on a predetermined paper size and output the drawing linked to the 3D data. In addition, a title box 60 indicating drawing information can be displayed at a predetermined position in the drawing area. The processing flow of the output format setting process 200, which allows 2D drawings to be output in a desired output format, will be described later.

[0027] The civil engineering drawing 5 shown in Fig. 3 is a two-dimensional drawing created and output from three-dimensional data of the civil engineering structure 11, similar to the civil engineering drawing 4 in Fig. 2. The civil engineering drawing 5 is a drawing (converted output drawing 5) output (displayed) by executing the output format conversion program of the CAD of this embodiment on the cross-sectional views (first cross-sectional view 21', second cross-sectional view 22') of the first cross-sectional line X1 and the second cross-sectional line X2 of the civil engineering drawing 3 described above.

[0028] This output format conversion program converts the standard output format (Figure 4) into a desired output format and allows for preset settings for the output paper size, drawing area, and title box 60 (width, font, number of lines, etc.). In this example, to conform to the output format specifications of a certain submission destination, the output paper size is set to A1 size (specific paper size), the non-drawing area 52 is set to a width of 20 mm from the outer frame all the way around (specific width tt), and the area further inward is set as the drawing area 51. In addition, a title box 60 with predetermined number of lines, size (vertical size, horizontal size), input items, font, and font size is displayed in the lower right corner of the drawing area 51. Furthermore, the output paper size, non-drawing area specific width tt, and title box 60 display style, which are converted when this output format conversion program is executed, can be freely changed by the user by changing specific values ​​in the output format conversion program. This is another distinctive feature of this output format conversion program.

[0029] Next, we will explain how to set the layout of the converted output drawing that is converted and output from the standard output drawing by executing this output format conversion program. First, when converting the paper size from the standard output drawing's paper size (A1 size in this embodiment) to a predetermined desired paper size (both A1 size in this embodiment), the view line 32 that forms the outer frame of the drawing area 51 of the standard output drawing is set to the outer frame of the paper size of the converted output drawing (A1 size outer frame in this embodiment). From there, the width of the non-drawing area (specific width tt: 20 mm in this embodiment) can be freely set, and the area inside this is set as the drawing area where the created drawing will be output (displayed).

[0030] The civil engineering drawing 5 (converted output drawing 5) shown in Figure 3 has an outer frame 41 of A1 paper size, a non-drawing area 52 of 20 mm width (specific width tt) set around the entire perimeter from the outer frame, and the area further inside is set as a drawing area 51 for displaying created drawings, etc. The boundary line between this non-drawing area 52 and the drawing area 51 is called the view line 42. The view line 42 is a line that forms the perimeter of the drawing area 51 for displaying created drawings, etc. In this embodiment, the scale is set to 1 / 200 based on the actual size of the civil engineering structure 11 and the paper size (A1) mentioned above.

[0031] In the lower part of the drawing area 51 of the civil engineering drawing 5 in Fig. 3, a first cross-sectional view 21' taken along the first cross-sectional line X1 shown in the civil engineering drawing 3 is output (displayed). In addition, in the upper part of the drawing area 51 of the civil engineering drawing 5, a second cross-sectional view 22' taken along the second cross-sectional line X2 shown in the civil engineering drawing 3 is output (displayed). Both cross-sectional views have a substantially trapezoidal cross section.

[0032] In addition, in the converted output diagram 5, a title box 60 indicating the diagram information displayed in the drawing area is displayed in the lower right corner of the drawing area 51. In this embodiment, the title boxes (50 mm wide x 30 mm high, each box 5 mm high) are preset to the display settings shown in Figure 3, and contain the following fields, in order: project name, drawing name, creation date, scale (drawing number), company name, and business name. The font of the text in the title box is set to 10pt Gothic. The fields, size (width, height, etc.), number of boxes, fields, and text font of these title boxes can be changed by changing the values ​​in the output format conversion program to meet the submission destination's specifications. Furthermore, the content corresponding to the fields in the title box (specific input information such as XX business, floor plan, and Reiwa XX / XX date) can be easily edited using spreadsheet software (Excel) linked to the output format conversion program. When the civil engineering diagram 5 is printed on paper, it is printed on A1 paper size in the same format as displayed on display screen 2 shown in Figure 3.

[0033] Next, a process flow for outputting a desired 2D drawing from 3D data will be described with reference to FIGS. 4 and 5. As shown in FIG. 4, in the 2D drawing output process (S100), the output format of the desired 2D drawing is first set from the 3D data (S101). The output format of the desired 2D drawing refers to, for example, a cross-sectional view at a specified location (first cross-sectional line X1, second cross-sectional line X2) shown in FIG. 2, or a side view, plan view, or bottom view (not shown). Once these desired output formats have been set, an output format setting process (described later) is executed (S102). Next, the 2D drawing linked to the 3D data is output in the output format set in S102 (S103) (fourth step), and the process ends.

[0034] In the output format setting process (S200) shown in FIG. 5, if the output format conversion program has not been executed in S201, the standard output format setting process built into the CAD is executed (S207), and the process ends. On the other hand, if the output format conversion program has been executed in S201 (YES in S201), the paper size setting process is then executed (S202). In the paper size setting process, a preset paper size (specific paper size) is set (A1 size in this embodiment). Next, the scale setting process (first step) is executed (S203). In the scale setting process (S203), the scale of the drawing to be output on the drawing area of ​​the paper is set (1 / 200 in this embodiment) based on the set paper size (A1 size) and the actual dimensions of the target structure 11. Note that in the scale setting process, the scale of the largest size that can be displayed in 80% (80% vertical, 80% horizontal) of the drawing area of ​​the set paper size (A1 size) is selected from the available scales. The selectable scales are predetermined values ​​such as 1 / 1, 1 / 10, 1 / 50, 1 / 100, 1 / 200, 1 / 500, 1 / 1000, 1 / 2000, etc.

[0035] Next, the first layout setting process (second procedure) is executed (S204). In the first layout setting process (S204), the view line 32 of the standard output drawing is converted (set) to the outer frame 41 of the paper size (A1 size) of the converted output drawing. This is to enable easy and free setting of the specific width of the non-drawing area thereafter. Next, the second layout setting process (third procedure) is executed (S205). In the second layout setting process (S205), a specific width tt is set as the non-drawing area all around the inside of the outer frame set in the first layout setting process (S204). This non-drawing area is a blank area in which no figures or title boxes are displayed. The specific width of this non-drawing area may also be limited as a regulation at the time of stopping.

[0036] Next, a title box setting process (fifth step) is executed (S206). In the title box setting process, the contents entered corresponding to the items in the spreadsheet software (Excel) are read. Then, the title box 60 is set to be displayed in a predetermined position (the lower right corner in this embodiment) in the drawing area 51 in a predetermined display format (size, font, etc.). Thereafter, the output format setting process (S200) is completed.

[0037] As described above, the computer device of this embodiment can easily create 2D drawings in a predetermined desired format (conforming to the recipient's specifications) simply by executing the output format conversion program described above. This minimizes the need for adjustments and corrections to conform to the recipient's specifications, thereby reducing the labor required for creating drawings. Furthermore, by executing the output format conversion program described above, it becomes possible to easily create 2D drawings in a predetermined desired format (conforming to the recipient's specifications) while linked to 3D data. This allows drawings to be submitted while linked to 3D data, and even if modifications are made to the submitted drawings, they can be easily made using the 3D data and 2D drawings. This also minimizes errors in creating drawings.

[0038] [Other aspects] In the output format setting process (S200) of the embodiment described above, following the layout setting process, a title box setting process (S206) is executed to output (display) the title box 60. The present invention is not limited to this example, and the title box setting process may be omitted so that the title box is not displayed.

[0039] In this embodiment, the output format conversion program presets the paper size to A1, but other paper sizes such as A2 may be set instead. The specific width from the outer frame of the non-drawing area is set to 20 mm, but it may be set to another value such as 25 mm. The output format conversion program, which is an extension program for a CAD program, may have a paper size setting means and a specific width setting means that allow the user to freely set the paper size and specific width.

[0040] In addition, in this embodiment, the storage means of the computer device is configured to store programs such as CAD software, spreadsheet software, and output format conversion programs, but instead of this configuration, these programs may be stored in storage means on the cloud and used as a CAD system. Similarly, the storage means of the computer device is configured to store three-dimensional data (3D models) and two-dimensional drawings created by CAD, but instead of this configuration, these data may be stored in storage means on the cloud and used as a CAD system.

[0041] In this embodiment, the standard output map of A1 size is converted into a converted output map of A1 size and output. However, this is not limiting, and the standard output map of A4 size or A2 size can also be converted into a converted output map of A1 size and output. The output procedure is the same.

[0042] In addition, in the output format conversion program of this embodiment, the scale is selected from either the actual size of the civil engineering structure 11 or the paper size (A1). Alternatively, the scale set in the scale setting process in the output format conversion program may be a predetermined fixed value (e.g., 1 / 200). Of course, the user can change the predetermined scale by changing the value in the output format conversion program.

[0043] [others] The present invention provides a program or device that allows a computer to output drawings created by CAD in a desired output format.

[0044] The program of Reference Invention 1-1 is A CAD program that causes a computer to create a two-dimensional drawing of a target structure, a first step of setting a scale of the two-dimensional drawing of the target structure based on a predetermined specific paper size (output size) and the actual dimensions of the target structure; a second step of setting the view line of the drawing frame of the default paper size of the CAD to the outer frame line of the drawing frame of the specific paper size; a third step of setting a non-drawing area of ​​a predetermined specific width (20 mm) from the outer frame line of the drawing frame of the specific paper size to the inner periphery, and setting the inner area of ​​the non-drawing area as the drawing area; a fourth step of displaying a two-dimensional drawing of the target structure created by CAD in the drawing area of ​​the drawing frame of the specific paper size at the scale set in the first step; The present invention is characterized in that the following is executed.

[0045] This program makes it possible to set the scale of the structure drawing, the paper size of the drawing, and the range of the drawing on the set paper in the desired format and output it. This makes it possible to minimize the tedious task of adjusting the drawing once it has been output to the format specified by the client. It also makes it possible to minimize the occurrence of errors that may occur when adjusting the drawing. A "drawing frame for a specific paper size" refers to, for example, a frame (outer frame 41 in Figure 3) that displays the drawing in the inner area formed on A1 size paper.

[0046] In addition, the program of Reference Invention 1-2 is the program of Reference Invention 1-1, the computer has a data storage means for storing three-dimensional data (three-dimensional model) of the target structure, The two-dimensional drawing is a plan view or a cross-sectional view (including a transverse view or a longitudinal view) showing a part or the whole of the three-dimensional data, The two-dimensional drawing output through the first to fourth steps is output in a state linked with the three-dimensional data.

[0047] According to this program, a computer stores three-dimensional data of a target structure, and creates two-dimensional drawings of plan views or cross sections showing part or all of the three-dimensional data based on the three-dimensional data. The two-dimensional drawings created through steps one through four are then output in the desired format while linked to the three-dimensional data. This means that when making design changes to the target structure, simply modifying the three-dimensional data (3D model) automatically modifies the two-dimensional drawings (two-dimensional data), minimizing the effort required to modify the two-dimensional drawings when making design changes and reducing the occurrence of modification errors.

[0048] Here, in the case of linked 3D data and 2D data, the 3D data may be the main data, and the 2D data subordinate to the 3D data may be the subordinate data. This means that even if the 2D data that is the subordinate data is modified, the 3D data will not be automatically modified, but if the 3D data that is the main data is modified, the linked 2D data will also be automatically modified.

[0049] In addition, the program of Reference Invention 1-3 is the program of Reference Invention 1-1 or Reference Invention 1-2, The method is characterized in that a fifth step is executed in which a title box describing information about the two-dimensional drawing to be displayed in the drawing area is displayed at a predetermined position in the drawing area.

[0050] This program includes a fifth step of displaying a title box indicating information about the drawing to be displayed in the drawing area at a predetermined position (e.g., the lower right corner) of the drawing area set in the third step. The content displayed in the title box can be added or modified as needed through other processes. This allows for a client's request to add a title box to the drawing to be accommodated, and allows the drawing to be output in the desired format. The title box is displayed at a corner of the drawing area (the lower right corner, the edge of the drawing area) adjacent to the non-drawing area. The content to be displayed in the title box, the font of the characters to be displayed in the title box, the size of the title box, etc. can be set.

[0051] In addition, the devices of Reference Inventions 1-4 are A data storage means for storing three-dimensional data (three-dimensional model) of a target structure is provided, An apparatus having a CAD (CAD software) for creating a two-dimensional drawing that is a plan view of a part or all of the three-dimensional data of the target structure, a scale setting means for setting the scale of the two-dimensional drawing of the target structure (displayed on the specific paper) based on a predetermined specific paper size (output size) and the actual dimensions of the target structure (as a whole); a first layout setting means for setting a view line of a drawing frame of a default paper size included in a CAD (CAD software) to an outer frame line of the drawing frame of the specific paper size; a second layout setting means for setting a non-drawing area of ​​a predetermined specific width (20 mm) from the outer frame line of the drawing frame of the specific paper size to the inner periphery, and setting the inner area of ​​the non-drawing area as the drawing area; a drawing output means for displaying a two-dimensional drawing of the target structure created by CAD in the drawing area of ​​the drawing frame of the specific paper size at the scale set by the scale setting means; The drawing output means outputs the two-dimensional drawing in a state linked with the three-dimensional data. It is characterized by:

[0052] Such an apparatus includes a storage means for storing three-dimensional data of a target structure, and a CAD system capable of creating two-dimensional drawings from the three-dimensional data of the target structure. It also includes a scale setting means for setting a scale on the drawing of the structure, a first layout setting means for setting a paper size, a second layout setting means for setting a drawing area, and a drawing output means for outputting (displaying) the two-dimensional drawing created from the three-dimensional data in the drawing area at the set scale. The two-dimensional drawing output by the drawing output means is linked to the three-dimensional data.

[0053] This makes it possible to minimize the need for the tedious task of adjusting drawings that have already been output to fit the client's specifications, and also to prevent mistakes that may occur when adjusting drawings. Furthermore, when making design changes to the target structure, modifying the 3D data automatically modifies the 2D data, minimizing the effort required to modify 2D drawings when making design changes and reducing the occurrence of correction errors.

[0054] According to this reference invention, drawings created using CAD can be output in the desired output format, minimizing the effort required for adjusting and correcting drawings and reducing the occurrence of errors. [Explanation of symbols]

[0055] 2 Display screen, 4 Standard output drawing (civil engineering drawing), 5 Converted output drawing (civil engineering drawing), 11 Civil engineering structure, 21 First cross section drawing, 22 Second cross section drawing, 31 Outer frame, 32 View line, 41 Outer frame, 42 View line, 51 Drawing area, 52 Non-drawing area, Title box 60 ?

Claims

1. A CAD program that causes a computer to create a two-dimensional drawing of a target structure, a first step of setting a scale of the two-dimensional drawing of the target structure based on a predetermined specific paper size and the actual dimensions of the target structure; a second step of setting the view line of the drawing frame of the default paper size of the CAD to the outer frame line of the drawing frame of the specific paper size; a third step of setting a non-drawing area of ​​a predetermined specific width from the outer frame line of the drawing frame of the specific paper size to the inner periphery, and setting the inner area of ​​the non-drawing area as the drawing area; a fourth step of displaying a two-dimensional drawing of the target structure created by CAD in the drawing area of ​​the drawing frame of the specific paper size at the scale set in the first step; A program to execute.

2. the computer has a data storage means for storing three-dimensional data of the target structure, the two-dimensional drawing is a plan view or a cross-sectional view showing a part or the whole of the three-dimensional data, 2. The program according to claim 1, wherein the two-dimensional drawing output through the first to fourth steps is output in a state linked with the three-dimensional data.

3. A program as described in claim 1 or claim 2 for executing a fifth step of displaying a title box containing information about the two-dimensional drawing displayed in the drawing area at a predetermined position in the drawing area.

4. a data storage means for storing three-dimensional data of the target structure; An apparatus having a CAD system for creating a two-dimensional drawing that is a plan view of a part or all of the three-dimensional data of the target structure, a scale setting means for setting a scale of the two-dimensional drawing of the target structure based on a predetermined specific paper size and the actual dimensions of the target structure; a first layout setting means for setting a view line of a drawing frame of a default paper size of the CAD to an outer frame line of the drawing frame of the specific paper size; a second layout setting means for setting a non-drawing area of ​​a predetermined specific width from an outer frame line of a drawing frame of the specific paper size to an inner periphery thereof, and setting an area inside the non-drawing area as a drawing area; a drawing output means for displaying a two-dimensional drawing of the target structure created by CAD in the drawing area of ​​the drawing frame of the specific paper size at the scale set by the scale setting means; The drawing output means outputs the two-dimensional drawing in a state linked with the three-dimensional data. An apparatus characterized in that

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