JP6544407B2 - INFORMATION PROCESSING APPARATUS, CONTROL METHOD THEREOF, AND PROGRAM - Google Patents

Description

  The present invention relates to creation of a two-dimensional drawing using a three-dimensional model of a three-dimensional CAD system, and more particularly to an information processing apparatus that supports display of depth dimensions in a two-dimensional drawing, a control method thereof, and a program.

  Conventionally, a dedicated drawing is created for each processing step or part inspection step, and a height dimension (dimension in the depth direction) is entered as an annotation on the plan view (top view). This is because when drawing a part shape having many uneven surfaces, it is difficult to estimate the shape from the drawing at the time of processing or part inspection only by entering the dimensions in the side view or the sectional view.

  This is a dimension in the depth direction, and the dimension value can not be acquired using the CAD measurement function on the plan view, so the user can annotate the height dimension on the plan view by directly inputting a numerical value on the plan view. It is displayed as.

  In addition, when using a three-dimensional CAD system, it is also possible to confirm the height dimension by the three-dimensional model displayed on the display by coloring or dimensioning the plane on the three-dimensional model. . However, since processing or part inspection with reference to paper drawings is still common at a manufacturing site, it is required that height dimensions can be confirmed in two-dimensional drawings.

  Therefore, for example, in Patent Document 1 below, when a two-dimensional drawing is created based on a three-dimensional model, an annotation is written on the surface displayed on the projection drawing based on the annotation rule according to each surface type. The technology to make is disclosed.

Japanese Patent Application Laid-Open No. 9-73472

  However, when a designer describes height dimensions on a two-dimensional drawing, it needs to be created one by one by directly inputting the values of the height dimensions, so it takes a lot of time to create a two-dimensional drawing. There is a problem of becoming

  Furthermore, since the 3D model is once displayed and measured, and the obtained dimensions are entered on the projection drawing of the 2D drawing by direct numerical input, it is possible to input a dimension different from the original 3D model. There is sex. In addition, since it is a manual input operation, there is a high possibility of omission of height dimensions.

  Further, in the mechanism disclosed in Patent Document 1 described above, various annotations stored in the apparatus in advance are described on a projection view on a two-dimensional drawing corresponding to a viewable surface of the three-dimensional model. Furthermore, since the height from the dimension reference to the selected surface is also stored in the apparatus in advance for the height dimension, the height dimension is also indicated on the two-dimensional drawing. However, displaying the prestored height dimension is not sufficient to represent various height dimensions. For example, when it is desired to display a height from several centimeters above the bottom to several centimeters below the top surface, the user measures the height in Patent Document 1, not from a well-defined point such as the bottom surface, It must be stored as annotation data. As a result, when displaying the height dimension in the two-dimensional drawing, there is a problem that the user needs to view the three-dimensional model or the two-dimensional drawing and measure the height dimension.

  In addition, since the two-dimensional drawing has a plan view, a front view, and a side view, the height dimension should be displayed at a position easy for the user to view or at a position desired by the user. The height dimensions could not be displayed.

  In particular, in the manufacturing site, the plane to be viewed is determined for each processing step. Therefore, it is not necessary to indicate all the dimensions, and it is desirable that the necessary dimensions be described for each processing step.

  The present invention has been made in view of the above problems, and is to display the dimension in the depth direction based on an element designated in a projection drawing that constitutes a two-dimensional drawing created based on a three-dimensional model. Aims to provide a possible mechanism of

  In order to achieve the above object, an information processing apparatus according to the present invention is generated from a three-dimensional model showing a three-dimensional shape of a design, and generates a two-dimensional drawing composed of a plurality of projection views and the two-dimensional drawing. An information processing apparatus comprising: storage means for storing coordinate values for each of the elements constituting the three-dimensional model, wherein the dimension in the depth direction in any projection drawing for constructing the two-dimensional drawing stored in the storage means Designation of the element for calculating the dimension in the depth direction in the first specification receiving means for receiving the specification of the element to be the basis for calculating the second dimension and any projection drawing constituting the two-dimensional drawing stored in the storage means The two-dimensional drawing is generated on the basis of the second specification receiving unit for receiving the second specification receiving unit, the element for which the specification is received by the first specification receiving unit, and the element for which the specification is received by the second specification receiving unit. In the three-dimensional model, the calculation means for performing processing for calculating the distance between the elements, and the element for which the second specification reception means receives the specification of the distance calculated according to the processing in the calculation means And display means for performing processing for displaying as the dimension in the depth direction of the image.

  According to the present invention, it is possible to calculate the distance between two elements designated on the projection in a three-dimensional model, and to express the calculated distance on the projection as a dimension in the depth direction (height dimension). Since this becomes possible, it is possible to calculate and display the height dimension desired by the user.

It is a block diagram which shows an example of the three-dimensional CAD system 100 in embodiment of this invention. FIG. 2 is a block diagram showing an example of the hardware configuration of an information processing apparatus 101 and a server 102 shown in FIG. 1; FIG. 2 is a block diagram showing an example of a module configuration of the information processing apparatus 101 and the server 102 shown in FIG. 1; It is a flowchart which shows the flow of a series of processes in embodiment of this invention. It is a schematic diagram which shows an example of the three-dimensional model created by the user. It is a block diagram which shows an example of the setting screen 600 of a process plane. It is a flowchart which shows the detail of the setting process of the process plane of FIG.4 S403. It is a schematic diagram which shows an example of the two-dimensional drawing created by the user. It is a block diagram which shows an example of the selection screen 900 of a process process. It is a flowchart which shows the detail of the automatic entry process of the height dimension of FIG.4 S408. FIG. 16 is a block diagram showing an example of a height dimension creation screen 1100. It is a flowchart which shows the detail of the selective entry process of the height dimension of FIG.4 S410. FIG. 16 is a block diagram showing an example of the configuration of a processed plane table 1300 stored in the information processing apparatus 101. It is a schematic diagram which shows an example of screen switching by the setting process of a process plane. It is a figure which shows an example of the attribute information of a three-dimensional model after the setting process of the process plane was performed. It is a block diagram which shows an example of a structure of the attribute information table 1600 of a three-dimensional model after setting processing of a process plane is performed. It is a schematic diagram which shows an example of screen switching by the selection process of a manufacturing process. It is a figure which shows an example of a two-dimensional drawing after the automatic entry process of height dimension was performed. It is a schematic diagram which shows an example of screen switching by the reference plane selection process on the same projection figure. It is a schematic diagram which shows an example of screen switching by the reference point selection process on another projection drawing. It is a schematic diagram which shows an example of screen switching by object surface selection processing on the same projection figure. It is a schematic diagram which shows an example of a two-dimensional drawing after selecting the reference plane on the same projection figure, and performing selection entry processing of a height dimension. It is a schematic diagram which shows an example of a two-dimensional drawing after selecting the reference point on another projection figure, and performing selection entry processing of a height dimension. It is a schematic diagram which shows an example of a two-dimensional drawing after the process which produces a height dimension on another projection drawing is performed. It is a flowchart which shows the detail of the selective entry process of the height dimension in 2nd embodiment of FIG.4 S410. It is a schematic diagram which shows an example of a two-dimensional drawing at the time of selecting the reference point on arbitrary projection figures. It is a schematic diagram which shows an example of a two-dimensional drawing after an object line is selected on the same projection as the projection which selected the reference point. It is a schematic diagram which shows an example of a two-dimensional drawing after the object plane was selected on the projection different from the projection which selected the reference point. It is a flowchart which shows the detail of the object surface highlight process of height dimension. FIG. 16 is a block diagram showing an example of a target surface highlight screen 3000. It is a block diagram which shows an example of the height dimension attribute information 3100 which a three-dimensional CAD system has. It is a schematic diagram which shows an example of screen switching by object surface highlight processing. It is a schematic diagram which shows an example of a three-dimensional model after object plane highlight processing was performed.

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

  FIG. 1 is a view showing an example of a system configuration of a three-dimensional CAD system 100 of the present invention. An information processing apparatus 101 and a server 102 are installed in the three-dimensional CAD system 100 of the present invention, and these apparatuses are connected so as to be capable of mutual data communication via a network 103 such as a LAN (Local Area Network). The configurations of various terminals or servers connected on the network 103 of FIG. 1 are one example, and it goes without saying that there are various configuration examples depending on the application and purpose.

  The information processing apparatus 101 is an apparatus that executes a three-dimensional CAD application. The three-dimensional CAD application is stored in the ROM 202 or the external memory 211 in FIG. 2 described later, and the CPU 201 reads out to the RAM 203 and performs various operations in accordance with an instruction from a designer (hereinafter referred to as a user).

  The three-dimensional CAD application creates and constructs a three-dimensional model (three-dimensional data) of a design object, and creates a two-dimensional drawing (planar data) based on the three-dimensional model, in accordance with an operation from a user. The three-dimensional model or the two-dimensional drawing may be stored in the external memory 211 of the server 102 or may be stored in the external memory 211 of the information processing apparatus 101. In the present embodiment, description will be made below assuming that the information is stored in the external memory 211 of the information processing apparatus 101.

  The server 102 is a device that stores and manages various data created by the information processing device 101. A three-dimensional model may be created by a plurality of users. In that case, one server 102 centrally manages the three-dimensional model created by the information processing apparatus 101 of each user.

  The information processing apparatus 101 may include the configuration of the server 102, and the server 102 may include the configuration of the information processing apparatus 101. Further, in the present embodiment, various types of data are stored in the information processing apparatus 101, and description will be made based on a mode in which the information processing apparatus 101 is operated by an operation from the user.

  FIG. 2 is a diagram showing a hardware configuration of various terminals in the embodiment of the present invention.

  The CPU 201 centrally controls the devices and controllers connected to the system bus 204.

  Further, the ROM 202 or the external memory 211 is required to realize a BIOS (Basic Input / Output System) which is a control program of the CPU 201, an operating system program (hereinafter referred to as an OS), and functions executed by each server or each PC. Various programs to be described later are stored. The RAM 203 functions as a main memory, a work area, and the like of the CPU 201.

  The CPU 201 loads various programs and the like necessary for execution of processing into the RAM 203 and executes various programs to realize various operations.

  The input controller (input C) 205 controls input from a keyboard 209 and a pointing device such as a mouse (not shown).

  A video controller (VC) 206 controls the display on a display such as a CRT display (CRT) 210. The display may be a liquid crystal display as well as a CRT. These are used by the administrator as needed.

  A memory controller (MC) 207 is a hard disk (HD), floppy disk (registered trademark FD) or PCMCIA card slot for storing a boot program, browser software, various applications, font data, user files, editing files, various data, etc. Control access to an external memory 211 such as a card type memory connected via an adapter.

  A communication I / F controller (communication I / FC) 208 connects and communicates with an external device via a network, and executes communication control processing in the network. For example, Internet communication using TCP / IP is possible.

  Note that the CPU 201 enables display on the CRT 210 by executing, for example, outline font rasterization processing on a display information area in the RAM 203. Further, the CPU 201 enables user's instruction with a mouse cursor (not shown) on the CRT 210 or the like.

  Various programs and the like used for the information processing apparatus 101 of the present invention to execute various processes described later are stored in the external memory 211, and are executed by the CPU 201 by being loaded into the RAM 203 as necessary. is there. Furthermore, definition files and various information tables used by the program according to the present invention are stored in the external memory 211.

  Next, a functional configuration diagram showing a module configuration of the information processing apparatus 101 and the server 102 will be described with reference to FIG. The module configurations of the various terminals or servers shown in FIG. 3 are merely examples, and it goes without saying that there are various configuration examples according to the application and purpose.

  The information processing apparatus 101 includes a CAD data storage module 301, a screen display module 302, a table management module 303, a two-dimensional drawing creation module 304, a processing plane management module 305, a height dimension creation module 306, and a coordinate value management module 307.

  The CAD data storage module 301 stores a three-dimensional model indicating a three-dimensional shape of a design created by the three-dimensional CAD application and a two-dimensional drawing created based on the three-dimensional model and configured by a plurality of projection drawings. Module. The three-dimensional model and the two-dimensional drawing stored by the CAD data storage module 301 are stored in the external memory 211 or the like of the information processing apparatus 101 and read by the CAD data storage module 301 as necessary.

  The screen display module 302 is a module for displaying various information on the CRT 210 of the information processing apparatus 101. The screen display module 302 displays a screen such as a setting screen 600 of a processing plane to be described later, and accepts selection and input from the user as needed. Also, a three-dimensional model or a two-dimensional drawing is displayed, and is displayed in a distinguishable manner as necessary.

  The table management module 303 is a module for storing and updating the processing plane table 1300 and the attribute information table 1600 of FIG. 13 described later. The various tables are stored in the external memory 211 and read out to the RAM 203 as needed.

  The two-dimensional drawing creation module 304 creates a two-dimensional drawing of the three-dimensional model so as to correspond to the three-dimensional model stored in the CAD data storage module 301. The two-dimensional drawing is a projection of a three-dimensional model, and creates a two-dimensional drawing projected in any direction instructed by the user. For example, there are projected views such as a front view, a plan view, and a right side view (side view). Since these projections are created in correspondence with the three-dimensional model by the two-dimensional drawing creation module 304, it is determined where on the three-dimensional model the elements such as line segments and faces selected in the two-dimensional drawing correspond. It is made to understand.

  The processing plane management module 305 is a module for setting a plane to be processed in each processing step of the part indicated by the three-dimensional model. The setting of the reference plane which becomes a reference and the setting of the plane to process are performed for each processing step. In accordance with an instruction from the user, the plane on the three-dimensional model and the processing plane are linked and managed.

  The height dimension creation module 306 is a module for creating and representing a height dimension indicating a depth direction in a projection of a two-dimensional drawing. The height dimension creation module 306 calculates a height dimension based on the reference point or reference plane specified by the user, the target point or target plane, and the target line which are also specified. As described above, since the two-dimensional drawing corresponds to the three-dimensional model, the distance between corresponding parts on the three-dimensional model is taken and displayed as the height dimension.

  The coordinate value management module 307 is a module that specifies a point on the three-dimensional model corresponding to the selected point in the two-dimensional drawing, acquires coordinate values of the point, or calculates coordinate values. . Get various coordinate values and perform operations.

  The server 102 comprises a CAD data storage module 311. The CAD data storage module 311 is similar to the CAD data storage module 301 of the information processing apparatus 101 described above. When the information processing apparatus 101 stores and manages the three-dimensional model and the two-dimensional drawing, the CAD data storage module 301 of the information processing apparatus 101 is used, and when the server 102 stores and manages the three-dimensional model and the two-dimensional drawing. The CAD data storage module 311 of the server 102 is used. The present embodiment will be described on the assumption that the CAD data storage module 301 of the information processing apparatus 101 is used.

  Next, a series of processes performed by the information processing apparatus 101 in the embodiment of the present invention will be described using the flowchart shown in FIG. The processing in steps S401 to S410 is performed under the control of the CPU 201 in the information processing apparatus 101.

  A program for causing the information processing apparatus 101 to execute this process may be prepared as a part of a three-dimensional CAD application installed in the information processing apparatus 101 or as an add-on program. It may be prepared as a separately installed program.

  Further, when performing the processing shown in FIG. 4, the CPU 201 of the information processing apparatus 101 starts the explanation assuming that the three-dimensional CAD application is in the operable state.

  First, in step S401, the information processing apparatus 101 creates, for example, a three-dimensional model as illustrated in FIG. 5 in accordance with various instructions input from the user operating the information processing apparatus 101. Thereafter, the created three-dimensional model is registered (stored) in the ROM 202 or the external memory 211 of the information processing apparatus 101.

  FIG. 5 is a diagram showing an example of the three-dimensional model created in step S401 of FIG. The three-dimensional model 500 is created using a three-dimensional CAD application. The three-dimensional model 500 is created by combining a plurality of planes, and each plane has positional information in a coordinate system in a three-dimensional space. The plane 501 has a Z coordinate value of “30 mm” representing the height direction, and the plane 502 has a Z coordinate value of “0 mm” representing the height direction. Also, in the 3D CAD application, it is possible to specify an arbitrary point, obtain position information in the coordinate system in the 3D space, and specify a Z coordinate that indicates the height direction that can be obtained when the point 503 is specified. The value is "0 mm". In a three-dimensional CAD application, it is possible to measure the distance by comparing coordinate values between planes or planes and points on a three-dimensional model. The distance between the plane 501 and the plane 502 of the three-dimensional model 500 is "30 mm" which is the absolute value of the calculation result of "30 mm-0 mm".

  It returns to the explanation of FIG. In step S402, the information processing apparatus 101 activates a setting screen 600 of a processing plane as shown in FIG.

  FIG. 6 is a view showing an example of a setting screen of a processing plane displayed on the CRT 210 in step S402 of FIG. In the processing plane setting screen 600, a part type 601, a processing plane list 602, an OK button 603, and a cancel button 604 are set. In the machining plane list 602, a machining process sequence 605, a machining plane sequence 606, and a setting plane sequence 607 are set.

  The part type 601 is an input field for inputting the type of 3D model. In the component type 601, the component type set in the component type 1301 of the processing plane table 1300 of FIG. 13 described later can read the selection candidate list and can be displayed so as to be selectable by the user. The machining plane list 602 is a display field for displaying the machining process and machining plane according to the part type input to the part type 601, and an input box for inputting a plane on a three-dimensional model corresponding to the machining plane of the row. Setting plane row 607 which is In the machining process sequence 605 in the machining plane list 602, the machining process name specified in step S703 of FIG. 7 described later is displayed. The machining plane name specified in step S703 of FIG. 7 described later is displayed on the machining plane column 606 in the machining plane list 602. The set plane row 607 in the machining plane list 602 displays plane names on the three-dimensional model input in step S 707 of FIG. 7 described later. The OK button 603 is a button for updating the attribute information of the three-dimensional model with the information displayed on this screen. The cancel button 604 is a button for ending this screen. The above is description of the setting screen of the process plane of FIG.

  It returns to the explanation of FIG. In step S403, the information processing apparatus 101 performs a process of updating attribute information of a three-dimensional model. Details of setting processing of the machining plane are shown in FIG. 7 described later.

  In step S404, the information processing apparatus 101 creates a two-dimensional drawing as shown in FIG. 8 based on the three-dimensional model created in step S401 in accordance with various instructions input from the user operating the information processing apparatus 101. Do. Thereafter, the created two-dimensional drawing is registered (stored) in the ROM 202 or the external memory 211 of the information processing apparatus 101. Two-dimensional drawings are created using the functions of a three-dimensional CAD application. In particular, a two-dimensional drawing corresponding to each element constituting the three-dimensional model created in step S401 is created.

  FIG. 8 is a diagram showing an example of a two-dimensional drawing created in step S404 of FIG. In the drawing 800, a projection A801 and a projection B802 are created. A projection view A801 is a top view when the three-dimensional model 500 in FIG. 5 is represented by a three-view shape. A projection view B802 is a front view of the three-dimensional model 500 in FIG. Since the two-dimensional drawing referred to here corresponds to the three-dimensional model as described above, the three-dimensional model is referred to, and when the shape of the three-dimensional model is updated, it is displayed as a projection on the two-dimensional drawing. Shape is also updated.

  It returns to the explanation of FIG. In step S405, the information processing apparatus 101 displays the drawing 800 created in step S404 on the CRT 210, and selects one of the projection drawings in the drawing 800 to which height dimensions are to be written, in accordance with an instruction from the user. Do.

  In step S406, the information processing apparatus 101 confirms whether attribute information is set in step S403 for the three-dimensional model to which the drawing displayed in step S405 refers. If attribute information is set for the three-dimensional model to be referenced, the process proceeds to step S407. If attribute information is not set for the three-dimensional model to be referenced, the process proceeds to step S408.

  In step S407, the information processing apparatus 101 displays a selection screen 900 of the processing step shown in FIG. FIG. 9 is a view showing an example of the selection screen of the processing step displayed on the CRT 210 in step S407 of FIG. In the processing process selection screen 900, a component type 901, a processing process 902, a height dimension drawing button 903, and a cancel button 904 are set.

  The component type 901 is a display field for displaying the component type set in the attribute of the three-dimensional model to which the two-dimensional drawing refers. The processing step 902 is an input field for inputting a processing step for which height dimensions are to be described. The height dimension drawing button 903 is a button for executing a process of representing the height dimension in the projection selected in step S405. The cancel button 904 is a button for ending the present screen. The above is the description of the selection screen of the processing step of FIG.

  It returns to the explanation of FIG. In step S408, the information processing apparatus 101 performs a process of representing the height dimension on the projection selected in step S405. Details of the height dimension automatic fill-in process will be described later with reference to FIG. When the height dimension automatic filling process is completed, this series of processes is ended.

  On the other hand, in step S409, the information processing apparatus 101 displays a height dimension creation screen 1100 shown in FIG. FIG. 11 is a view showing an example of a height dimension creation screen displayed on the CRT 210 in step S409 of FIG. The height dimension creation screen 1100 includes a reference point / reference plane selection radio button 1101, a target plane selection radio button 1102, a dimension creation button 1103 for another projection view, a dimension preview button 1104 for a projection view, and a cancel button 1105 It is done.

  The reference point / reference surface selection radio button 1101 is a button for checking when the user selects a reference point or a reference surface on which a height dimension is based on the two-dimensional drawing. The target surface selection radio button 1102 is a button for checking when the user selects a target surface on which the height dimension is to be described on the binary drawing. In the other projections, the dimension creation button 1103 is a button for executing processing of creating height dimensions in addition to the projection designated before the height dimension creation screen is activated. In the other projections, the dimension preview button 1104 is a button for executing a process of previewing the height dimensions in addition to the projection specified before starting the height dimension creation screen. A cancel button 1105 is a button for ending this screen. The above is the description of the height dimension creation screen of FIG.

  It returns to the explanation of FIG. In step S410, the information processing apparatus 101 performs a process of representing the dimensions of the reference point / reference surface selected by the user and the target surface in the projection view selected in step S405 as a height dimension. Details of the height dimension creation process are shown in FIG. 12 described later. When the height dimension creating process is completed, this series of processes is ended.

  Next, setting processing of a processing plane will be described using FIG. The processing in steps S701 to S710 is performed under the control of the CPU 201 in the information processing apparatus 101.

  A program for causing the information processing apparatus 101 to execute this process may be prepared as a part of a three-dimensional CAD application installed in the information processing apparatus 101 or as an add-on program. It may be prepared as a separately installed program.

  In step S701, the information processing apparatus 101 selects the part type of the three-dimensional model displayed on the CRT 210 as the part type 601 of the setting screen 600 of the processing plane according to an instruction from the user.

  In step S702, the information processing apparatus 101 searches the processing plane table 1300 shown in FIG. 13, and acquires the processing step 1302, the processing plane 1303, and the plane ID 1304 set in the component type 601 selected and input in step S701. .

  FIG. 13 is a view showing an example of a processing plane table which the three-dimensional CAD program used in step S402 in FIG. 4 and step 702 in FIG. 7 has as internal information or external information. In the machining plane table 1300, a component type 1301, a machining process 1302, a machining plane 1303, a plane ID 1304, and the like are set.

  The component type 1301 is information indicating the type of component. The processing step 1302 is information indicating a plurality of processing steps required to manufacture the part type 1301. The processing plane 1303 is information indicating a plane (first element) serving as a reference when processing or inspection of the processing step 1302 and a plurality of planes (second elements) to be processed or inspected. The plane ID 1304 is a value assigned as an attribute to a plane on the three-dimensional model. The plane ID is acquired from the attribute assigned to the plane on the three-dimensional model, and the plane ID 1304 of the machining plane table 1300 is searched using the acquired value, thereby processing the process step name and the plane name of the plane on the three-dimensional model. Identify The above is description of an example of the process plane table of FIG.

  It returns to the explanation of FIG. In step S703, the information processing apparatus 101 displays the machining process 1302 acquired in step S702 in the machining process sequence 605 of the setting screen 600 of the machining plane and in the machining plane array 606.

  Next, in step S704, the information processing apparatus 101 substitutes “1” for the variable i, and then repeats the processing in steps S705 to S707 while the value of the variable i does not exceed the number of lines in the machining plane list 602. .

  In step S <b> 705, the information processing apparatus 101 sets the setting plane column 607 in the i-th row of the machining plane list 602 in a selected state.

  In step S706, the information processing apparatus 101 displays, on the three-dimensional model, a plane corresponding to the machining plane displayed in the i-th machining plane column 606 selected in the machining plane list 602 in accordance with an instruction from the user. select.

  In step S 707, the information processing apparatus 101 acquires the name of the plane on the three-dimensional model selected in step S 706, and displays the plane name in the i-th set plane column 607 of the machining plane list 602. Then, after “1” is added to the variable i, it is determined whether the value of the variable i is equal to or less than the number of lines in the machining plane list 602. If it is determined that the value of the variable i is equal to or less than the number of lines in the machining plane list 602, the processes in steps S705 to S707 are repeated. On the other hand, if it is determined that the value of variable i has exceeded the number of lines in machining plane list 602, the process proceeds to step S708.

  In step S708, when it is determined that pressing of any button of the setting screen 600 of the processing plane has been received, the information processing apparatus 101 specifies the pressed button. If it is determined that the OK button 603 has been pressed, the process proceeds to step S709, and if it is determined that the cancel button 604 has been pressed, the process of setting the processing plane is ended, and the process is returned to the caller.

  If the button specified in step S 708 is the OK button 603, the process proceeds to step S 709 to substitute “1” for the variable i, and then the value of the variable i exceeds the number of lines in the machining plane list 602 While not, the process of step S710 is repeated.

  In step S710, the information processing apparatus 101 processes the processing plane in the i-th row acquired in step S702 with respect to the plane of the three-dimensional model having the plane name displayed in the setting plane column 607 in the i-th row in the processing plane list 602. A plane ID 1304 corresponding to the column 606 is added as an attribute. Here, a plane ID 1304 is added as an attribute of the plane constituting the three-dimensional model managed by the three-dimensional CAD application. By setting in this way, it is possible to link which plane among the planes constituting the three-dimensional model corresponds to each plane of the setting plane sequence 607. After “1” is added to the variable i, it is determined whether the value of the variable i is equal to or less than the number of lines in the machining plane list 602. If it is determined that the value of the variable i is equal to or less than the number of lines in the machining plane list 602, the process of step S710 is repeated. On the other hand, when it is determined that the value of the variable i exceeds the number of lines in the machining plane list 602, the component type selected and inputted in the component type 601 is added to the attribute information of the 3D model, and the setting screen 600 for machining plane Is closed, and the processing plane setting process is finished.

  Here, with reference to FIG. 14, an example of a display screen when the setting process of the machining plane is performed will be described. The three-dimensional model 1400 is displayed on the CRT 210. When the setting screen 1401 of the processing plane is activated and "part A" is selected as the part type 1402 according to the instruction from the user (step S701), the processing plane table 1300 is searched and the part type 1301 is "part A". The machining process 1302 and the machining plane 1303 are displayed on the machining plane list 1403 (steps S702 and S703). When the user selects the plane 1404 on the three-dimensional model to be set as the machining plane of the row selected in the machining plane list 1403, the name of the plane 1404 is displayed on the setting plane 1405 (steps S705 and S706).

  FIG. 15 shows an example of a state in which the plane ID 1304 is added as an attribute to all the selected planes by clicking the OK button 1406 after selecting the setting planes of all the rows of the machining plane list 1403. “Part A” is added to the part type attribute 1501 of the three-dimensional model 1500. The plane ID attribute of the plane 1502 of the three-dimensional model set in step S 710 is “A1-0”, the plane ID attribute of the plane 1503 is “A1-1”, and the plane ID attribute of the plane 1504 is “A1−0”. 2 ”is added (step S710).

  16 selects the setting planes of all the rows in the machining plane list 1403, clicks the OK button 1406, and adds the plane ID as an attribute to all the selected planes as attribute information of the three-dimensional model. It is an example of a table. In the attribute information table 1600 of plane ID, a plane name 1601 possessed by a plane on the three-dimensional model and a plane ID 1602 added as attribute information are set. By doing this, the set plane and plane ID are linked.

  Next, the process of automatically filling in the height dimension will be described with reference to FIG. The processing in steps S1001 to S1009 is performed under the control of the CPU 201 in the information processing apparatus 101.

  A program for causing the information processing apparatus 101 to execute this process may be prepared as a part of a three-dimensional CAD application installed in the information processing apparatus 101 or as an add-on program. It may be prepared as a separately installed program.

  In step S1001, the information processing apparatus 101 acquires the type attribute of the three-dimensional model to which the two-dimensional drawing displayed on the CRT 210 refers. The type attribute of the three-dimensional model is added to each three-dimensional model as shown in step S710 and FIG. 15 described above.

  In step S1002, the information processing apparatus 101 displays the type of the part acquired in step S1001 on the part type 901 of the selection screen 900 of the processing process as shown in FIG. 9 displayed in step S407. In addition, the part type 1301 of the processing plane table 1300 is searched by the type of part acquired in S1001 and the processing steps 1302 of all the matching rows are acquired and set as selection candidates for the processing step 902 of the processing step selection screen 900. Do.

  In step S1003, according to an instruction from the user, the information processing apparatus 101 selects a height dimension to be described in the projection selected on the two-dimensional drawing from the selection candidates of the processing step 902 of the selection screen 900 of the processing step. Select a processing process that has

  In step S1004, when the information processing apparatus 101 determines that pressing of any button of the processing process selection screen 900 has been received, the information processing apparatus 101 identifies the pressed button. If the button specified in step S 1004 is the height dimension drawing button 903, the process proceeds to step S 1005. If the button identified in step S1004 is a cancel button 904, the processing process selection screen 900 is closed, the height dimension automatic entry process is ended, and the process is returned to the caller.

  In step S1005, the information processing apparatus 101 selects the part type 1301 of the processing plane table 1300 and the processing step in the part type displayed on the part type 901 of the processing screen selection screen 900 and the processing step displayed in the processing step 902. Each value 1302 is searched, and the value of the plane ID 1304 of the row, which is a value starting from the “reference plane” of the processing plane 1303 among the matching rows, is acquired. Among the planes present in the three-dimensional model referenced by the two-dimensional drawing displayed on the CRT 210, a plane having a plane ID attribute that matches the acquired plane ID is acquired as a reference plane.

  In step S1006, the information processing apparatus 101 displays the part type 1301 of the processing plane table 1300 and the processing step in the part type displayed on the part type 901 of the processing screen selection screen 900 and the processing step displayed in the processing step 902. Each of the lines 1302 is searched, and the number of lines in the row where the machining plane 1303 starts with “machining plane” is acquired as the number of machining planes. After adding “1” to the variable i, it is determined whether the value of the variable i is equal to or less than the number of processing planes. If it is determined that the value of the variable i is equal to or less than the number of processing planes, the processing from step S1007 to step S1009 is repeated. On the other hand, if it is determined that the value of the variable i exceeds the number of processing planes, the selection screen 900 for the processing process is closed.

  In step S1007, the information processing apparatus 101 selects the part type 1301 of the processing plane table 1300 and the processing step in the part type displayed on the part type 901 of the processing screen selection screen 900 and the processing step displayed in the processing step 902. Each value 1302 is searched to obtain the value of the plane ID 1304 of the i-th row of the row in which the machining plane 1303 starts with the “machining plane” among the coincident rows. Among the planes present in the three-dimensional model referred to by the two-dimensional drawing displayed on the CRT 210, a plane having a plane ID attribute coincident with the acquired plane ID is acquired as a processed plane i.

  In step S1008, among the planes present in the three-dimensional model referred to by the two-dimensional drawing displayed on the CRT 210, the information processing apparatus 101 measures the distance between the reference plane acquired in step S1005 and the processing plane i acquired in step S1007. Is measured and obtained as height dimension i. The measurement of distance is calculated by the function of the 3D CAD application. In a three-dimensional CAD application, it is possible to measure the distance by comparing coordinate values between planes or planes and points on a three-dimensional model. That is, taking the three-dimensional model 1500 of FIG. 15 as an example, when the plane 1502 is acquired in step S1005 and the plane 1503 and the plane 1504 are acquired in step S1007, Z coordinates in three-dimensional space of the plane 1502 and the plane 1503 Calculate the difference between the absolute values of For example, when the Z coordinate of the plane 1502 is “0” and the Z coordinates of the plane 1503 and the plane 1504 is “30”, the absolute value of these differences is “30”, so the plane 1502 and the plane 1503 or The distance between the plane 1502 and the plane 1504 is "30 mm". In this example, one coordinate is calculated as 1 mm, but when one coordinate is set as 2 mm, the distance is calculated as “60 mm” at “30 × 2 mm”. In the present embodiment, the distance between two elements is calculated by such a calculation method, but the calculation method is not limited to this. For example, the shortest distance between two elements may be calculated by the function of the API possessed by the 3D CAD application. In this case, when the coordinate value of the two elements in the three-dimensional space is passed to the API, the API calculates the shortest distance based on the passed coordinate value. Since the method of calculating the shortest distance is a conventional technique, the description will be omitted.

  In step S1009, the information processing apparatus 101 creates an annotation on the processing plane i displayed on the projection view selected in the two-dimensional drawing displayed on the CRT 210. When the reference plane and the processing plane i are parallel, the value of the height dimension i acquired in step S1008 is described in the annotation. If the reference plane and the processing plane i are not parallel, a character string such as "SLOPE" indicating that the processing plane i is not parallel to the reference plane is written in the annotation.

  Here, with reference to FIG. 17, an example of a display screen when the height dimension automatic entry process is performed will be described. A two-dimensional drawing 1700 is displayed on the CRT 210. With the projection drawing 1701 in the two-dimensional drawing 1700 selected by the user, the selection screen 1702 for the processing step is activated (step S1002). The type attribute "part A" of the part of the three-dimensional model to which the two-dimensional drawing 1700 refers is displayed in the part type 1703 of the selection screen 1702 of the processing step, and "part A" is a candidate for selection of the processing step 1704. The included processing steps are displayed. When the processing step 1704 is selected by the user and the height dimension drawing button 1705 is pressed (step S1004), the two-dimensional drawing 1700 is in the state shown in FIG. 18 in which the height dimension is described as an annotation (step S1009). .

  FIG. 18 is an example of a two-dimensional drawing after the height dimension automatic filling process is performed. A height dimension 1802 and a height dimension 1803 are created as annotations in the projection drawing 1801 on the two-dimensional drawing 1800 selected before the automatic filling process of the height dimension. Thus, the height dimension can be displayed for each processing step only by designating the plane on which the height dimension is desired to be displayed in advance for each processing step.

  Next, height dimension selection entry processing will be described using FIG. The processing in steps S1201 to S1218 is performed under the control of the CPU 201 in the information processing apparatus 101.

  A program for causing the information processing apparatus 101 to execute this process may be prepared as a part of a three-dimensional CAD application installed in the information processing apparatus 101 or as an add-on program. It may be prepared as a separately installed program.

  In step S1201, the information processing apparatus 101 sets the reference point / reference plane selection radio button 1101 of the height dimension creation screen 1100 as shown in FIG. 11 displayed in step S409 according to an instruction from the user.

  In step S1202, the information processing apparatus 101 determines whether the plane serving as the reference plane is selected on the projection view selected in step S405 among the two-dimensional drawings displayed on the CRT 210, or the projection selected in step S405. It is determined whether a point to be a reference point has been selected on a projection different from the drawing. If it is determined that the plane to be the reference plane has been selected on the projection selected in step S405, the process proceeds to step S1203 and a reference point on a projection that is different from the projection selected in step S405. If it is determined that the point to be is selected, the process proceeds to step S1205.

  In step S1203, the information processing apparatus 101 is a plane (reference plane) serving as a reference for calculating the height dimension on the projection selected in the two-dimensional drawing displayed on the CRT 210 according to the instruction from the user. Is selected (designated) (first designated reception means). The reference surface is used to measure the distance (height dimension) from the reference surface in step S1210 described later. Also, when a plane is designated, among the elements constituting the three-dimensional model that has generated the two-dimensional drawing, the element corresponding to the designated plane is identified and displayed on the CRT 210. Since the two-dimensional drawing is generated from the three-dimensional model, the elements constituting the projection of the two-dimensional drawing correspond to the elements constituting the three-dimensional model. Therefore, when an arbitrary element is selected in the two-dimensional drawing, the element of the three-dimensional model corresponding to the element can be identified and displayed. Since the user generates a two-dimensional drawing after creating the three-dimensional model, it is difficult to grasp which element of the three-dimensional model corresponds to the element of the two-dimensional drawing. Therefore, when an element of the two-dimensional drawing is selected by the user, the user can easily grasp the element by identifying and displaying the element corresponding to the selected element in the three-dimensional model.

  In step S1204, the information processing apparatus 101 acquires the plane selected in step S1203 as a reference plane, and stores the plane in the RAM 203.

  On the other hand, in step S1205, the information processing apparatus 101 calculates a height dimension on a projection view different from the projection view selected in the two-dimensional drawing displayed on the CRT 210 according to an instruction from the user. A reference point (reference point) is selected (designated) (first designated reception means). Like the reference plane, the reference point is used to measure the distance (height dimension) from the reference point in step S1210 described later. Further, when a point is designated, an element corresponding to the designated point is identified and displayed on the CRT 210 among the elements constituting the three-dimensional model which has generated the two-dimensional drawing. The details are as described above in step S1203.

  In step S1206, the information processing apparatus 101 acquires the point selected in step S1205 as a reference point, and stores the point in the RAM 203.

  In step S1207, the information processing apparatus 101 sets a target surface selection radio button 1102 of the height dimension creation screen 1100 in a selected state according to an instruction from the user.

  In step S1208, the information processing apparatus 101 selects, according to an instruction from the user, an element (target surface) of a plane which is a target for calculating the height dimension on the projection selected in the two-dimensional drawing displayed on the CRT 210 (Designation) to do (second designation reception means). The target surface is used to calculate the distance (height dimension) to the reference surface and the reference point described above. Also, when a plane is designated, among the elements constituting the three-dimensional model that has generated the two-dimensional drawing, the element corresponding to the designated plane is identified and displayed on the CRT 210. The details are as described above in step S1203.

  In step S1209, the information processing apparatus 101 acquires the plane selected in step S1208 as a target plane, and stores the plane in the RAM 203.

  In step S1210, the information processing apparatus 101 selects one of the elements constituting the three-dimensional model that is the generation source of the two-dimensional drawing displayed on the CRT 210, the reference plane acquired in step S1204 or the reference point acquired in step S1206. The target surface acquired in step S1209 is read from the RAM 203, and these distances are measured in a three-dimensional space and acquired as height dimensions (height dimension calculation means). The distance between the reference surface or reference point and the target surface can be calculated using the function of the three-dimensional CAD application, and this is used. Specifically, the height dimension is calculated based on the coordinate value of the reference surface or the reference point in the three-dimensional space and the coordinate value of the target surface in the three-dimensional space. More specifically, elements corresponding to the reference plane acquired in step S1204 or the reference point acquired in step S1206 and the target plane acquired in step S1207 are elements constituting the three-dimensional model having generated a two-dimensional drawing. Identify from inside. Then, since the coordinate value in the three-dimensional space exists in the specified element, the distance between the two elements is calculated by calculating the absolute value of the difference between the coordinate values. There are X, Y, and Z coordinates in the coordinate values in the three-dimensional space, but the projection on the two-dimensional drawing including the selected target surface is a front view, a plan view, or a side view Change the coordinate value used in the calculation depending on the figure. For example, when the target surface is a front view, the absolute value of the difference between the Z coordinate of the reference surface or reference point in the three-dimensional model and the Z coordinate of the target surface is calculated. When the target surface is a plan view, the absolute value of the difference between the Y coordinate of the reference surface or reference point in the three-dimensional model and the Y coordinate of the target surface is calculated. When the target surface is a side view, the absolute value of the difference between the X coordinate of the reference surface or reference point in the three-dimensional model and the X coordinate of the target surface is calculated. Thus, the height dimension indicating the depth direction can be calculated by changing the coordinate value used in the calculation according to which projection on the two-dimensional drawing the selected target surface is included in . Note that the height dimension may be calculated by another calculation method. For example, the shortest distance in the three-dimensional space between the selected reference point or reference plane and the target plane may be calculated using an API included in the three-dimensional CAD application. The shortest distance in the three-dimensional space between the reference point or reference plane and the target plane is the height dimension as it is. Therefore, the height dimension may be calculated by calculating the shortest distance between two elements using this API. Since the method of calculating the shortest distance is a conventional technique, the description will be omitted.

  In step S1211, the information processing apparatus 101 creates an annotation on the target surface selected in step S1208 (display unit). When the reference plane is acquired in step S1204 and the reference plane and the target plane are parallel, the value of the height dimension acquired in step S1210 is described in the annotation. If the reference plane is acquired in step S 1204 and the reference plane and the target plane are not parallel, a character string such as “SLOPE” indicating that the target plane is not parallel to the reference plane is described in the annotation. When the reference point is acquired in step S1206, the value of the height dimension acquired in step S1210 is described in the annotation. By doing this, it is possible to select a reference plane or point on the same projection view or different projection views, calculate the distance to the target plane, and display it as the height dimension.

  In step S 1212, when it is determined that pressing of any button of the height dimension creation screen 1100 has been received, the pressed button is specified. If the button specified in step S 1212 is the dimension creation button 1103 (display position change acceptance unit) in another projection drawing, the process proceeds to step S 1213. If the button specified in step S 1212 is the dimension preview button 1104 for another projection, the process proceeds to step S 1216. If the button identified in step S1212 is the cancel button 1105, the height dimension creation screen 1100 is closed, the height dimension selection entry process is ended, and the process is returned to the caller. If pressing of the button has not been received, the process returns to step S1208.

  Steps S1213 to S1215 are processing for displaying the height dimension created in step S1211 in a corresponding position in another projection view. In other words, dimension lines are created in a conventional manner in other projections, and heights are described there.

  In step S1213, the information processing apparatus 101 selects a projection view for which a dimension line is desired to be created in accordance with an instruction from the user. The projection selected here is a projection different from the projection for which the annotation was created in step S1211.

  In step S1214, the information processing apparatus 101 deletes the annotation of the height dimension created in step S1211. In addition, even if it is not deletion, it may be hidden.

  In step S1215, the information processing apparatus 101 has a length representing the distance between the reference surface acquired in step S1204 or the reference point acquired in step S1206 and the target surface acquired in step S1209 in the projection selected in step S1213. Create dimension lines as vertical dimensions. A dimension line is created at a position on the projection view selected in step S1213 corresponding to the height dimension calculated in step S1211. Since the displayed two-dimensional drawing corresponds to the three-dimensional model as described above, the position corresponding to the three-dimensional model is identified from the position at which the height dimension created in step S1211 is displayed, and identified If the portion on the projection view selected in step S1213 corresponding to the portion of the three-dimensional model is specified, the dimension line corresponding to the height dimension created in step S1211 is selected in step S1213. It can be displayed on the figure. Then, the distance measured in step S1210 is displayed on the created dimension line.

  Steps S1216 to S1218 are processing for temporarily displaying a dimension line corresponding to the height dimension created in step S1211 on another projection view.

  In step S1216, the information processing apparatus 101 selects a projection view on which a dimension line is to be previewed according to an instruction from the user. The projection selected here is a projection different from the projection for which the annotation was created in step S1211.

  In step S 1217, the information processing apparatus 101 has a length representing the distance between the reference plane acquired in step S 1204 or the reference point acquired in step S 1206 and the target plane acquired in step S 1209 in the projection selected in step S 1216. Create dimension lines as vertical dimensions. The dimension line creation method is the same as step S1215 described above.

  In step S1218, the information processing apparatus 101 displays the dimension line created in step S1217 for a predetermined time, and then deletes the dimension line created in step S1217. By doing this, it is possible to temporarily display a dimension line preview at a portion corresponding to the height dimension created in step S1211.

  FIG. 19 is an example of a display screen when selection of a reference surface is performed in the height dimension selection entry process. A two-dimensional drawing 1900 is displayed on the CRT 210. With the projection drawing 1901 in the two-dimensional drawing 1900 selected by the user, the height dimension creation screen 1902 is activated. Thereafter, with the reference point / reference surface selection option button 1903 on the height dimension creation screen 1902 selected by the user, the reference surface 1904 serving as the reference of the height dimension displayed on the projection drawing 1901 is selected. (Step S1203).

  On the other hand, FIG. 20 is an example of a display screen when the selection of the reference point in the selection entry process of the height dimension is performed. On the CRT 210, a two-dimensional drawing 2000 is displayed. With the projection drawing 2001 in the two-dimensional drawing 2000 selected by the user, the height dimension creation screen 2002 is activated. After that, with the reference point / reference surface selection option button 2003 of the height dimension creation screen 2002 selected by the user, the reference point 2004 that is the reference of the height dimension is selected from the projection other than the projection drawing 1901 (Step S1204).

  And FIG. 21 is an example of a display screen at the time of selection of an object side in selection entry processing of height dimension being performed. On the CRT 210, a two-dimensional drawing 2100 is displayed. With the projected drawing 2101 in the two-dimensional drawing 2100 selected by the user, the height dimension creation screen 2102 is activated, and selection of the reference plane shown in FIG. 19 or selection of the reference point shown in FIG. 20 is completed. It is in the state of doing. Thereafter, with the target surface selection option button 2103 on the height dimension creation screen 2102 selected by the user, the target surface 2104 to be created for the height dimension displayed on the projected drawing 2101 is selected (step S1207).

  FIG. 22 is an example of a two-dimensional drawing after selection of a reference surface and selection entry processing of height dimension is executed. When the reference plane 1904 of FIG. 19 is selected as the reference plane and the target plane 2104 of FIG. 21 is selected as the target plane in the height dimension selection entry process, the reference plane and the target on the three-dimensional model to which the two-dimensional drawing 2200 refers The distance of the surface is measured, and the measurement result is obtained as "5". An annotation 2201 is created on the target surface on the two-dimensional drawing 2200, and the measurement result "5" is written.

  FIG. 23 is an example of a two-dimensional drawing after selection of reference points is performed and selection entry processing of height dimension is executed. When the reference point 2004 in FIG. 20 is selected as the reference point and the target surface 2104 in FIG. 21 is selected as the target plane in the height dimension selection entry process, the reference point and the target on the three-dimensional model to which the two-dimensional drawing 2200 refers The distance of the surface is measured, and the measurement result is obtained as "30". An annotation 2301 is created on the target surface on the two-dimensional drawing 2300, and the measurement result "30" is written.

  FIG. 24 is an example of a two-dimensional drawing after the dimension creation button 1103 is pressed on another projection drawing of the height dimension creation screen 1100. When the reference plane 1904 of FIG. 19 is selected as the reference plane and the target plane 2104 of FIG. 21 is selected as the target plane in the height dimension selection entry process, the reference plane and the target on the three-dimensional model to which the two-dimensional drawing 2200 refers The distance of the surface is measured, and the measurement result is obtained as "5". An annotation 2401 is created on the target surface on the two-dimensional drawing 2400, and the measurement result "5" is written. Thereafter, when the user presses the dimension creation button on another projection and the user selects the projection drawing 2402, the annotation 2401 is deleted, and the projection drawing 2402 of the reference surface 1904 of FIG. 19 and the target surface 2104 of FIG. A linear dimension 2403 is created that represents the distance.

  As described above, since a height dimension can be displayed according to a designated place using a plurality of projection views in a design having many uneven surfaces, the user can select even across a plurality of projection views. The effect of being able to measure and display the desired dimensions of is produced.

  Next, a second embodiment of the present invention will be described. The second embodiment is a mechanism for determining whether to express the height dimension or to display the dimension using the conventional dimension line, depending on the projection plane in which the object plane or the object line is selected. Basically, the height dimension is a dimension with depth, and it is common to be described in a projection drawing using the mechanism described above. However, the dimensions to be described in the two-dimensional drawing include not only the height dimensions but also the dimension notation using conventionally existing dimension lines. The mechanism described above is realized by operating the function for representing height dimensions in a 3D CAD application, but the conventional dimensions are expressed using functions other than the previous functions. There must be. Therefore, it is necessary to indicate the height dimension and the conventional dimension by a simpler operation. The mechanism for realizing this will be described below.

  The height dimension selection entry process in the second embodiment will be described with reference to FIG. The processing in steps S2501 to S2515 is performed under the control of the CPU 201 in the information processing apparatus 101.

  A program for causing the information processing apparatus 101 to execute this process may be prepared as a part of a three-dimensional CAD application installed in the information processing apparatus 101 or as an add-on program. It may be prepared as a separately installed program.

  The height dimension selection entry process in the second embodiment is the process in step S410 in FIG. 4 described above. Therefore, steps S401 to S410 in FIG. 4 execute the same processing in the second embodiment. Steps S401 to S410 are similar processing, and thus detailed description will be omitted.

  First, in step S2501, the information processing apparatus 101 sets the reference point selection radio button 2603 among the radio buttons displayed on the dimension creation screen 2602 displayed in step S409 in accordance with an instruction from the user. In the embodiment described above, the height dimension creation screen is displayed, but in the second embodiment, a dimension creation screen 2602 as shown in FIG. 26 is displayed in step S409, and an operation from the user is received.

  In step S2502, the information processing apparatus 101 selects a point (reference point) serving as a reference for measuring dimensions from the projection selected in step S405 in accordance with an instruction from the user. Then, in step S2503, the information processing apparatus 101 stores the coordinate values in the RAM 203 using the point selected in step S2502 as a reference point. As shown in FIG. 26, when there are two projections in the two-dimensional drawing 2600, of which the projection selected in step S405 is the projection 2601 showing the front, a reference point with respect to the projection 2601 is Is selected, and the point 2604 selected by the user is used as a reference point.

  In step S2504, the information processing apparatus 101 sets the target surface / target line selection radio button 2703 among the radio buttons displayed on the dimension creation screen 2602 displayed in step S409 in accordance with an instruction from the user. Then, among the plurality of projection views constituting the two-dimensional drawing displayed on the CRT 210, the selection for the plane or line of any of the projection views is accepted.

  In step S2505, the information processing apparatus 101 determines whether or not a line segment is selected and instructed on the same projection as the projection selected in step S405, in accordance with an instruction from the user. That is, as shown in FIG. 27, it is determined whether or not a line segment is selected and instructed on the same projection as the reference point. If it is determined that a line segment has been selected and instructed on the same projection drawing, the process proceeds to step S2506, and if not, the process proceeds to step S2510. In the second embodiment, a line segment is selected and instructed on the same projection, but may not be a line segment. It may be a plane or a point. The same applies below.

  In step S2506, the information processing apparatus 101 sets the line segment instructed to be selected in step S2505 to be in a selected state (third specification receiving unit). Then, in step S2507, the information processing apparatus 101 stores the coordinate value in the RAM 203 with the line segment in the selected state as the target line.

  In step S2508, the information processing apparatus 101 acquires, from the RAM 203, the reference point acquired in step S2503 and the target line acquired in step S2507, and measures the distance (dimension) based on them. Since they are on the same projection, the difference between the corresponding portions in the Z-axis direction (height direction) on the three-dimensional model is calculated as an absolute value, and this is used as a dimension. Other calculation methods may be used.

  In step S2509, the information processing apparatus 101 creates a dimension line parallel to the target line and the reference point, and describes the distance calculated in step S2508. Specifically, as shown in FIG. 27, when the object line 2705 is selected after selecting the reference point, since it is in the same projection, it is necessary to indicate not the height but the normal size. Therefore, a dimension line 2704 that is parallel to the object line and the reference point is created, and the distance is calculated in step S2508 to easily describe the dimension.

  On the other hand, in step S2510, the information processing apparatus 101 determines, in accordance with an instruction from the user, whether or not a plane has been selected and instructed on a projection view different from the projection view selected in step S405. That is, as shown in FIG. 28, it is determined whether or not a plane has been selected and designated on a projection that is different from the reference point. If it is determined that a plane has been selected and instructed on a different projection, the process proceeds to step S 2511. If not, the process proceeds to step S 2515. In the second embodiment, although a plane is selected and instructed on different projection views, it may not be a plane. It may be a line segment or a point. The same applies below.

  In step S 2511, the information processing apparatus 101 sets the surface instructed to be selected in step S 2510 in a selected state. Then, in step S 2512, the information processing apparatus 101 stores the coordinate value in the RAM 203 with the surface in the selected state as the target surface.

  In step S 2513, the information processing apparatus 101 acquires from the RAM 203 the reference point acquired in step S 2503 and the target surface acquired in step S 2512, and measures the distance (height dimension) based on them. Unlike in step S2509, since the reference point and the object plane are selected on different projection views, it can be understood that the dimension line can not be drawn to indicate the dimension. Therefore, it is judged as an instruction to write the height dimension. Therefore, the difference in the Z-axis direction (height direction) between corresponding parts on the three-dimensional model is calculated as an absolute value, and this is used as a dimension. Other calculation methods may be used.

  In step S 2514, the information processing apparatus 101 creates a height dimension on the target surface selected in step S 2511, and describes the distance calculated in step S 2513. Specifically, as shown in FIG. 28, when the target surface 2802 is selected after the reference point is selected, it is known that the reference point and the target surface are selected on different projection views, so it is necessary to describe the height dimension. There is. Therefore, the height dimension 2801 is created on the target surface, and the height dimension is simply described by describing the distance calculated in step S 2513.

  In step S 2515, the information processing apparatus 101 determines whether the cancel button 2605 provided on the dimension creation screen 2602 is pressed. If it is determined that the cancel button 2605 is pressed, the height dimension selection entry process according to the second embodiment is ended, and the process returns to the calling source. Otherwise, the process returns to step S2505. .

  By doing this, it is possible to represent the height dimension while performing dimension notation using conventional dimension lines.

  As described above, according to the present embodiment, the distance between the object selected on the first projection and the object selected on the second projection is the distance on the first projection or the second Since it is possible to write on the projection, it is possible to measure and display the dimension desired by the user even if the selection is made across a plurality of projections.

  Next, after height dimensions are displayed in the two-dimensional drawing in the first embodiment and the second embodiment, the reference point or reference plane and the object plane selected in the two-dimensional drawing in the three-dimensional model, and further The process of identifying and displaying the vertical dimension will be described with reference to FIG. The processing in steps S2901 to S2908 is performed under the control of the CPU 201 in the information processing apparatus 101.

  A program for causing the information processing apparatus 101 to execute this process may be prepared as a part of a three-dimensional CAD application installed in the information processing apparatus 101 or as an add-on program. It may be prepared as a separately installed program.

  In the first embodiment and the second embodiment described above, the height dimension, which is a dimension indicating the depth direction, is calculated by a three-dimensional model based on an element designated by the user, and displayed in a two-dimensional drawing. explained. However, for a user who views a drawing, there is also a problem that when there are a large number of specialized notations in a two-dimensional drawing, it is difficult to understand what of what elements it means. In particular, the height dimension is an auxiliary notation and is different from a normal dimension line, and thus many users are not used to it. In order to solve this problem, in the following processing, when the height dimension is selected in the two-dimensional drawing, the corresponding element or height dimension is identified and displayed on the three-dimensional model. Since this can help the user's understanding, even an unaccustomed user can grasp from what height dimension it indicates. The following is a detailed description of this.

  First, in step S2901, the information processing apparatus 101 displays the two-dimensional drawing created in the first embodiment or the second embodiment on the screen based on an operation from the user operating the information processing apparatus 101, Further, an object plane highlight screen 3000 as shown in FIG. 30 is activated.

  FIG. 30 shows an example of the target surface highlight screen 3000 displayed on the CRT 210 in step S2901 of FIG. The target surface highlight screen 3000 includes a highlight button 3001 and a cancel button 3002. The highlight button 3001 is a button for highlighting the height dimension selected in step S2902 in FIG. 30 described later, the reference point of the height dimension, or the reference surface and the target surface. The cancel button 3002 is a button for ending the present screen. The above is the description of the target surface highlight screen 3000 of FIG.

  It returns to the explanation of FIG. After the process of step 2901 ends, in step S2902, the information processing apparatus 101 receives a selection for the height dimension displayed in the first embodiment or the second embodiment according to an instruction from the user. Whether or not the selected annotation is a height dimension may be stored by managing an attribute indicating whether the annotation is a normal size annotation or a height dimension annotation for each annotation. Then, it is determined whether or not the annotation selected according to this attribute has a height dimension, and as a result, if it indicates that the attribute is a height dimension, it is assumed that the height dimension is selected. It can be judged.

  After the height dimension is selected, in step S2903, the information processing apparatus 101 receives pressing of any button of the target surface highlight screen 3000, and determines which button is pressed. If it is determined that the highlight button 3001 is pressed, the process advances to step S2904. If it is determined that the cancel button 3002 has been pressed, the target surface highlight screen 3000 is closed, and the series of processing ends.

  If it is determined that the highlight button 3001 is pressed, the information processing apparatus 101 displays on the CRT 210 a three-dimensional model to which the two-dimensional drawing displayed on the CRT 210 refers, in step S2904. The two-dimensional drawing is data generated from the three-dimensional model by the function of the three-dimensional CAD application as described above. Therefore, the two-dimensional drawing and the three-dimensional model are linked in a three-dimensional CAD application. Following this, in step S2904, a three-dimensional model linked to the open two-dimensional drawing is identified and displayed on the CRT 210.

  In step S2905, the information processing apparatus 101 searches for height dimension attribute information 3100 possessed by a 3D CAD application described later with reference to FIG. 31, and selects the target element 1 and target element 2 of the height dimension selected in step S2902. Get to

  FIG. 31 is a diagram showing an example of height dimension attribute information 3100 possessed by the 3D CAD application. The height dimension attribute information 3100 possessed by the three-dimensional CAD application is composed of a dimension ID 3101, one target element name 3102, and two target element names 3103. The dimension ID 3101 indicates unique identification information of the height dimension created on the two-dimensional drawing. This identification information is issued to the height dimension each time the height dimension is created on the two-dimensional drawing. Therefore, it is unique information. The target element first name 3102 indicates the name of an element on the first two-dimensional drawing that constitutes the height dimension indicated by the dimension ID 3101. An object 2 element name 3103 indicates an element name on the second two-dimensional drawing that constitutes the height dimension indicated by the dimension ID 3101. The height dimension created on the two-dimensional drawing represents the distance in the three-dimensional space of the element of the target element 1 3102 and the element of the target element 2 3103. That is, the reference point or reference plane and the target plane designated in the first embodiment or the second embodiment are shown.

  It returns to the explanation of FIG. After the process of step S2905 ends, in step S2906, the information processing apparatus 101 highlights the element corresponding to the target element name 1 3102 acquired in step S2905 among the elements constituting the three-dimensional model displayed in step S2904. indicate. Since the two-dimensional drawing is generated from the three-dimensional model, the elements constituting the three-dimensional model correspond to the elements constituting the two-dimensional drawing. Therefore, the element of the three-dimensional model corresponding to the element of the two-dimensional drawing can be identified. Based on this, the element corresponding to the target element one person 3102 is specified from the three-dimensional model and highlighted. In the present embodiment, highlight display is used, but any display may be used as long as the user can distinguish it. It may be blinked, or only the edge or face of the element may be changed in color.

  After the process of step S2906 ends, in step S2907, the information processing apparatus 101 highlights the element corresponding to the target element 2 name 3103 acquired in step S2905 among the elements constituting the three-dimensional model displayed in step S2904. indicate. Details of the process are as described above in step S2906.

  Then, in step S2908, the information processing apparatus 101 displays the height dimension selected in step S2902 between the two elements highlighted in step S2906 and step S2907. More specifically, the value of the height dimension selected in step S2902 is acquired, and a dimension line indicating the height dimension is displayed between the two elements highlighted in step S2906 and step S2907, Display the value of the acquired height dimension in the vicinity. By doing this, the user who browses the two-dimensional drawing has an effect that the part corresponding to the height dimension displayed in the two-dimensional drawing can be confirmed on the three-dimensional model.

  Here, with reference to FIG. 32, an example of screen switching by the target surface highlight process will be described. On the CRT 210, a two-dimensional drawing 3200 is displayed. The information processing apparatus 101 activates the target surface highlight screen 3202 according to an instruction from the user. When the user selects the height dimension 3201 and presses the highlight button 3203, the corresponding element is highlighted as shown in FIG.

  FIG. 33 shows an example of screen switching by the target surface highlight processing with reference to an example of the three-dimensional model displayed on the CRT 210 after the execution of the target surface highlight processing shown in FIG. The three-dimensional model 3300 specifies the dimension ID 3101 of the height dimension attribute information 3100 corresponding to the height dimension 3201 shown in FIG. 32 by executing the target surface highlight process. Then, the element 3301 and the element 3302 corresponding to the target element first name 3102 and the target element second name 3103 in the record of the dimension ID 3101 are highlighted. Furthermore, a dimension line is displayed between these elements, and the value (distance) of the selected height dimension is displayed as shown in the height dimension 3303.

  As described above, according to the present embodiment, it is possible to identify and display corresponding portions on the three-dimensional model corresponding to the two-dimensional drawing only by selecting the height dimension displayed in the two-dimensional drawing. Therefore, it has the effect of helping to understand information that is difficult to understand only with two-dimensional drawings.

  The present invention is also applicable to, for example, an embodiment as a system, an apparatus, a method, a program, a storage medium, etc. Specifically, the present invention may be applied to a system composed of a plurality of devices. The present invention may be applied to an apparatus consisting of two devices.

  Note that the present invention includes one that directly or remotely supplies a program of software that implements the functions of the above-described embodiments to a system or an apparatus. The present invention is also included in the present invention if the computer of the system or apparatus reads out and executes the supplied program code.

  Therefore, the program code itself installed in the computer to realize the functional processing of the present invention by the computer also implements the present invention. That is, the present invention also includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of an object code, a program executed by an interpreter, script data supplied to an OS, or the like.

  Examples of recording media for supplying the program include a flexible disk, a hard disk, an optical disk, a magneto-optical disk, an MO, a CD-ROM, a CD-R, and a CD-RW. There are also magnetic tapes, non-volatile memory cards, ROMs, DVDs (DVD-ROMs, DVD-Rs) and the like.

  In addition, as a program supply method, a browser on a client computer is used to connect to an Internet home page. Then, the program can be supplied by downloading the computer program of the present invention itself or a compressed file including an automatic installation function from the home page to a recording medium such as a hard disk.

  The present invention can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from different home pages. That is, the present invention also includes a WWW server which allows a plurality of users to download program files for realizing the functional processing of the present invention by a computer.

  In addition, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM, and distributed to users, and the user who has cleared predetermined conditions downloads key information that decrypts encryption from the homepage via the Internet. Let Then, it is possible to execute the program encrypted by using the downloaded key information and install it on a computer.

  Also, the functions of the above-described embodiments are realized by the computer executing the read program. In addition, based on the instructions of the program, an OS or the like running on the computer performs part or all of the actual processing, and the functions of the above-described embodiment can be realized by the processing.

  Furthermore, the program read from the recording medium is written to a memory provided in a function expansion board inserted in the computer or a function expansion unit connected to the computer. Thereafter, based on the instruction of the program, a CPU or the like provided in the function expansion board or the function expansion unit performs part or all of the actual processing, and the function of the above-described embodiment is also realized by the processing.

  The embodiments described above merely show examples of implementation in practicing the present invention, and the technical scope of the present invention should not be interpreted in a limited manner by these. That is, the present invention can be implemented in various forms without departing from the technical concept or the main features thereof.

100 3D CAD System 101 Information Processing Device 102 Server 103 Network 201 CPU
202 RAM
203 ROM
204 system bus 205 input controller 206 video controller 207 memory controller 208 communication I / F (interface) controller 209 input device 210 display device 211 external memory

Claims (6)

An information processing apparatus capable of displaying a two-dimensional drawing composed of a plurality of projection drawings corresponding to a three-dimensional model showing a three-dimensional shape of a design object,
Designation accepting means for accepting designation of an element serving as a reference for calculating dimensions in each of at least two projection views projected from different directions among the plurality of projection views constituting the two-dimensional drawing;
The dimension calculated based on the at least two elements accepted by the designation accepting means is displayed in association with the element having the dimension as the dimension in the depth direction among the elements accepted by the designation accepting means Display control means for controlling
An information processing apparatus comprising:   The display control means controls to display different from the display of the dimensions when the plurality of elements whose specification is received by the specification receiving means is not in a parallel positional relationship. Information processor as described.   In the arbitrary projection drawing which constitutes the two-dimensional drawing, the specification reception means receives specification of a surface which constitutes the projection drawing which is an element which is a target for calculating a dimension in the depth direction. The information processing apparatus according to 1 or 2.   4. The display control means according to any one of claims 1 to 3, wherein the display control means performs control to display the dimension in a projection view different from the projection view in which the element serving as the calculation reference of the dimension is specified. An information processing apparatus according to item 1. A control method of an information processing apparatus capable of displaying a two-dimensional drawing composed of a plurality of projections corresponding to a three-dimensional model indicating a three-dimensional shape of a design object,
An element serving as a reference for calculating dimensions in at least two of the plurality of projection views constituting the two-dimensional drawing , the designation reception means of the information processing apparatus projecting from at least two different directions. Designated acceptance step for accepting the designation of
The dimension calculated based on the at least two elements accepted in the designation accepting step by the display control means of the information processing device is the dimension in the depth direction among the elements accepted in the designation accepting step. A display control step of controlling to display in correspondence with an element whose size is
Control method including: A program that can be executed by an information processing apparatus capable of displaying a two-dimensional drawing composed of a plurality of projections, corresponding to a three-dimensional model indicating a three-dimensional shape of a design object,
The information processing apparatus
Designation accepting means for accepting designation of an element serving as a reference for calculating dimensions in each of at least two projection views projected from different directions among the plurality of projection views constituting the two-dimensional drawing;
The dimension calculated based on the at least two elements accepted by the designation accepting means is displayed in association with the element having the dimension as the dimension in the depth direction among the elements accepted by the designation accepting means A program to function as display control means to control

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