JP2015022733A - Support apparatus, three-dimensional model display device, and control method and program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display the three-dimensional models of the same shape together if the shape of final three-dimensional model is different depending on the order in which blend is executed.SOLUTION: From a target part of a three-dimensional model displayed by an application are accepted plural sites containing an intersection point as edge parts for which blend surface treatment is executed. When the blend surface treatment is completed for all the accepted edge parts of the plural sites, an execution order pattern is determined in which execution order of a user-operable blend surface treatment is changed for all the accepted edge parts of the plural sites. The volumetric capacity of each three-dimensional model created at execution of the determined execution order pattern is calculate, and the three-dimensional models of the same determined volumetric capacity are grouped. The grouped three-dimensional models are displayed such that the three-dimensional models can be compared with each other as simulation after the blend surface treatment is completed for all the accepted edge parts of the plural sites.

Description

  The present invention particularly relates to a support device that displays a three-dimensional CAD drawing, a three-dimensional model display device, and a control method and program technology thereof.

  Conventionally, when a blending operation is performed at the same place in CAD, the final shape may differ depending on the order of selection.

  Patent Document 1 generates a fillet surface creation condition set indicating a fillet surface creation order based on a preset fillet surface intersection shape setting function such as a plurality of fillet surface intersection shapes, and displays a fillet surface image diagram as a list The technology to display on the screen is described.

JP 2002-304424 A

  The final shape is different in the order of blending. This shape cannot be obtained without the designer's knowledge and is not created automatically. The shape created when blending multiple times may not give the desired result, or you may fall into the illusion that there can only be one actually created shape as a possible shape. In practice, however, there may be other possible shapes, or they may be better. Therefore, the designer will manually combine several times. Since it is not known what the shape will be in the end, the past solutions are manually combined one by one. For example, when a combination of three places occurs due to some circumstances, a combination of six patterns or more is generated only by this. As a result, the order in which they are combined is not known, so it is tempting.

  An object of the present invention is to provide a mechanism capable of collectively displaying a three-dimensional model having the same shape when the shape of a final three-dimensional model differs depending on the order of blending.

  According to the present invention, blending surface processing is performed on a target unit of a blending surface that blends the creating unit that creates the three-dimensional model, the displaying unit that displays the created three-dimensional model, and the three-dimensional model to be displayed. A three-dimensional model that is used in a three-dimensional model creation application that requests the application to execute the blend surface processing, and that is displayed by the application From the target portion, a receiving means for receiving a plurality of locations with intersections as edge portions for executing the blend surface processing, and when the blend surface processing is completed for all of the received plurality of edge portions, The blend surface machining that can be operated by the user for the received edge portions. A specifying means for specifying an execution order pattern in which the row order is changed; a volume calculating means for calculating a volume of a three-dimensional model created when the specified execution order pattern is executed; and the specified execution order Grouping means for grouping the three-dimensional models having the same calculated volume in the pattern, and the blended surface processing of the grouped three-dimensional models are completed for all the received edge portions. And a simulation display means for displaying each of the three-dimensional models in a comparable manner as a simulation of the subsequent three-dimensional model.

  Further, the plurality of locations that can be received by the receiving means are three or more edge portions, and when the blend surface processing is completed for all of the received plurality of edge portions, the plurality of received portions The first extraction means for extracting the execution order in the case where the edge portion simultaneously executes the blend surface processing as the execution order pattern, and the execution of the blend surface processing has been completed for all of the received plurality of edge portions. A second extracting means for extracting, as the execution order pattern, an execution order when the blend surface processing is executed by cutting every one of the received edge portions; When the blend surface processing is completed for all edge portions, the blend is performed by cutting every two of the received edge portions. A third extracting means for extracting the execution order as the execution order pattern when executed processing, and further comprising a.

  Further, at least one execution order pattern among the execution order patterns in which the execution order of the blend surface processing that can be operated by the user with respect to the received plurality of edge portions specified by the specifying means is selected from the group. It further comprises execution order pattern display means for classifying and displaying the execution order patterns corresponding to the converted three-dimensional models.

  In addition, the execution order pattern displayed by the execution order pattern display means is that the number of operation procedures when the blend surface processing is completed at all the received edge portions is the smallest. Features.

  According to the present invention, it is possible to provide a mechanism capable of collectively displaying three-dimensional models having the same shape when the shape of the final three-dimensional model differs depending on the order of blending.

The figure which showed the three-dimensional model display apparatus by the information processing apparatus. The figure which showed the hardware block diagram of the information processing apparatus. The figure which showed the flowchart which the three-dimensional model display application of the information processing apparatus 100 performs. The figure which showed the flowchart which performs the three-dimensional model display application of the information processing apparatus. It is a screen displayed by a 3D model display application installed in the information processing apparatus 100. It is a screen displayed by an add-on function (support device) installed in the information processing apparatus 100. This is an image of the internal logic processed by the add-on function (support device) installed in the information processing apparatus 100. It is a screen displayed by an add-on function (support device) installed in the information processing apparatus 100. The conceptual diagram of the difference set operation of a bourin-an operation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Referring to FIG.

  The information processing apparatus 100 in which the 3D model display application is installed has a blending surface at a target portion of a blending surface for blending the creating unit for creating the 3D model, the displaying unit for displaying the created 3D model, and the 3D model to be displayed. Blending processing execution means for instructing processing to be executed.

Further, the information processing apparatus 100 is an add-on function of the 3D model creation application that is used in the 3D model creation application, and the support device in which add-on software that requests the application to execute blend surface processing is also installed. It is.
FIG. 2 will be described.
FIG. 2 is a diagram illustrating a hardware configuration of the information processing apparatus (support apparatus, 3D model display apparatus) 100.

  In FIG. 2, 401 is a CPU that comprehensively controls each device and controller connected to the system bus 404. Further, the ROM 402 or the external memory 411 is necessary to realize a BIOS (Basic Input / Output System) or an operating system program (hereinafter referred to as an OS) that is a control program of the CPU 401, or a function executed by each server or each PC. Various programs to be described later are stored.

  Reference numeral 403 denotes a RAM which functions as a main memory, work area, and the like for the CPU 401. The CPU 401 implements various operations by loading a program necessary for execution of processing from the ROM 402 or the external memory 411 into the RAM 403 and executing the loaded program.

  An input controller 405 controls input from a keyboard (KB) 409 or a pointing device such as a mouse (not shown). A video controller 406 controls display on the display unit 410. Note that the display unit 410 is not limited to a CRT, but may be another display such as a liquid crystal display. These are used by the administrator as needed. Further, the display unit may include a touch panel function in which the user specifies a target position in the display screen with a finger, a pen, or the like.

  Reference numeral 407 denotes a memory controller, which is connected via an adapter to a hard disk (HD), flexible disk (FD), or PCMCIA card slot for storing a boot program, various applications, font data, user files, editing files, various data, and the like. Controls access to an external memory 411 such as a compact flash (registered trademark) memory.

  Reference numeral 408 denotes a communication I / F controller that is connected to and communicates with an external device via the network (communication line) 300, and executes communication control processing in the network. For example, communication using TCP / IP is possible.

  Note that the CPU 401 enables display on the CRT by executing, for example, outline font rasterization processing on the display information area in the RAM 403. In addition, the CPU 401 enables a user instruction with a mouse cursor (not shown) on the CRT.

Various programs to be described later for realizing the present invention are recorded in the external memory 411 of the information processing apparatus 100, and are executed by the CPU 401 by being loaded into the RAM 403 as necessary. Further, various data files and data tables used at the time of executing the program are also stored in the external memory 411 or the information device 100, and detailed description thereof will be described later.
FIG. 3 will be described.
FIG. 3 is a main flowchart processed by the information processing apparatus 100 representing an example in the embodiment of the present invention.
FIG. 3 includes a CAD application and a CAD add-on.

A CAD user is a designer who operates various CAD applications using a mouse or a keyboard. The CAD application is general-purpose 3D CAD software such as CATIA (registered trademark), NX (registered trademark), or SolidWorks (registered trademark). However, it is limited to those having a history function. The CAD add-on is installed by developing additional functions in the above-mentioned various CAD applications programmatically.

We wanted to create a blend (fillet, arc surface) for the shape that CAD users had drawn so far. However, the blend knew that the blend shape of the finally formed intersection differs depending on the selection order of edges. Therefore, instead of creating a normal blend, we decided to conduct a blend simulation in order to select the blend that is easiest to work with.
In step S101, the CAD user presses a button 301 shown in FIG.

  In step S102, the information processing apparatus 100 activates and displays the blend simulation screen of FIG. FIG. 6 is developed with a CAD add-on, and when the button 301 is pressed, the screen of FIG. 6 is activated. If the blend simulation button is erroneously activated, the button 602 closes it.

  In step S103, the CAD user selects a plurality of edges (sides to be blended) 302 shown in FIG. This includes edges that have already been blended by CAD users in the past.

  In step S104, the CAD user finishes selecting an edge (side to be blended). At this time, a plurality of edges are selected by the CAD user.

  In step S105, the CAD user presses the start button 601 in FIG. If only one edge (side to be blended) is selected, the blend simulation does not function even when the start button 601 is pressed, and an error screen (not shown) is displayed.

In step S <b> 106, the information processing apparatus 100 selects a plurality of locations 302 having intersections from the target portions where the blend surface processing of the three-dimensional model displayed by the application can be performed, as an edge portion for executing the blend surface processing ( Accept as (side to be blended) (accepting means). Next, the information processing apparatus 100 determines whether any of the edges selected in S103 has already been subjected to blend processing. If it is determined that there is (Yes), the process proceeds to S107. If it is determined that there is no (No), the process proceeds to S108.
The plurality of places that can be received by the receiving means are three or more edge portions where intersections exist with each other as shown in FIG.

In step S107, the information processing apparatus 100 searches and extracts the shape of the edge before blending stored in the shape history data. The extracted shape is the upper diagram of FIG. That is, all the edges that have already been blended are returned to the state before blending.
In step S108, the information processing apparatus 100 accepts the number of sides of the edge selected in S103.

  In step S109, the information processing apparatus 100 calculates the total number of combinations in the order of processing the edges selected in S103. A detailed sub-flowchart of this calculation will be described with reference to FIG.

  In step S110, the information processing apparatus 100 reads the three-dimensional model of the shape A and the shape B stored in the calculation result shape storage table. Next, priority is determined when shapes A and B are compared based on the data stored in the ease of processing data. This processability data is constructed and stored as a database of methods that are actually easy to work on site. For example, data indicating that the arc shape is easier to process than the pointed data is stored in the processability data, and each has a priority. This data varies depending on the industry and company. After determining the priority order of the shapes, the information processing apparatus 100 displays the shapes having the same volume as calculated in FIG. 4 as shown in FIG. Shape 1 is a shape with high priority preparation (easiest to process), and shape 2 is a shape with slightly lower priority (hard to process). Thereafter, the shape with low priority preparation is obtained.

In other words, the information processing apparatus 100 displays the three-dimensional models grouped in S207 as a three-dimensional model simulation after completion of the blend surface processing on all the edge portions received in S106. (Simulation display means).
In step S111, the CAD user selects the check button 501 to select the shape 1 from the displayed shapes.
In step S112, the CAD user presses an OK button 502 in FIG. If the simulation result is different from the expected result, the close button 503 is selected.
In step S113, the information processing apparatus 100 instructs the CAD application to determine the shape selected in S112 as the shape in which the final intersection is blended.
FIG. 4 will be described.
FIG. 4 is a flowchart processed by the information processing apparatus 100 that represents an example of the embodiment of the present invention.

  In step S <b> 201, the information processing apparatus 100 executes blend surface processing that can be operated by the user with respect to the received plurality of edge portions when the blend surface processing has been completed for all the edge portions received in step S <b> 106. An execution order pattern in which the order is changed is specified (specifying means).

In this step, the information processing apparatus 100 instructs the CAD application to temporarily create a shape when the selected edge is blended in a batch step (1 step). When three sides are selected as shown in FIG. 7, the combination of blending procedures is as follows, for example.
・ Blend of side A, side B and side C simultaneously

As described above, the information processing apparatus 100 sets the execution order when the blended surface processing is simultaneously performed on the plurality of received edge portions when the blended surface processing is completed for all the received multiple edge portions. Extracted as a pattern (first extracting means). Next, the information processing apparatus 100 calculates the volume of the final three-dimensional model created when the execution order pattern specified in S201 is executed (volume calculation means).
All three-dimensional models of the above combinations are temporarily created, and the volume (volume) of each three-dimensional model is calculated and stored in the RAM.

  In step S202, the information processing apparatus 100 determines whether n edges selected in S108 for calculating the total number of combinations have been reached. R starts from three. If it is determined that n = r has been reached, the process proceeds to S206.

  In step S203, the information processing apparatus 100 executes blend surface processing that can be operated by the user for the received edge portions when the blend surface processing is completed for all the edge portions received in step S106. An execution order pattern in which the order is changed is specified (specifying means).

In this step, the information processing apparatus 100 instructs the CAD application to temporarily create a shape in the case where the blend processing is performed in the step (3 steps) in which the selected edges are cut one by one. When three sides are selected as shown in FIG. 7, the combination of blending procedures is as follows, for example.
-Blend side A-Blend side B-Blend side C-Blend side A-Blend side C-Blend side B-Blend side B-Blend side A-Blend side C-Blend side B -> Blend side C-Blend side A-Blend side C-Blend side A-Blend side B-Blend side C-Blend side B-Blend side A

As described above, when the blending surface processing is completed for all the received edge portions, the information processing apparatus 100 executes the blending surface processing for each of the received edge portions. The execution order in this case is extracted as an execution order pattern (second extraction means). Next, the information processing apparatus 100 calculates the volume of the final three-dimensional model created when the execution order pattern specified in S203 is executed (volume calculation means).
All three-dimensional models of the above combinations are temporarily created, and the volume (volume) of each three-dimensional model is calculated and stored in the RAM.

In step S204, the information processing apparatus 100 executes blend surface processing that can be operated by the user for the received edge portions when the blend surface processing has been completed for all the edge portions received in step S106. An execution order pattern in which the order is changed is specified (specifying means). In this step, the information processing apparatus 100 instructs the CAD application to temporarily create a shape that has been blended in a step (two steps) in which two or more selected edges are collected. When three sides are selected as shown in FIG. 7, the combination of blending procedures is as follows, for example.
・ Blend side A and side B are blended simultaneously → Side C is blended ・ Side side A and side C are blended simultaneously → Side B is blended ・ Side side B and side C are blended simultaneously → Side A is blended blend

As described above, when the blend surface processing is completed for all the received edge portions, the information processing apparatus 100 performs the blend surface processing by cutting every two of the received edge portions. The execution order in this case is extracted as an execution order pattern (third extraction means). Next, the information processing apparatus 100 calculates the volume of the final three-dimensional model created when the execution order pattern specified in S204 is executed (volume calculation means).
All three-dimensional models of the above combinations are temporarily created, and the volume (volume) of each three-dimensional model is calculated and stored in the RAM.

In step S <b> 205, the information processing apparatus 100 executes blend surface processing that can be operated by the user with respect to the received plurality of edge portions when the execution of blend surface processing has been completed for all the edge portions received in step S <b> 106. An execution order pattern in which the order is changed is specified (specifying means). In this step, the information processing apparatus 100 further instructs the CAD application to temporarily create a blended shape by changing the order of the steps (two steps) summarized in step S204. When three sides are selected as shown in FIG. 7, the combination of blending procedures is as follows, for example.
・ Blend side C → Blend side A and side B simultaneously ・ Blend side B → Blend side A and side C simultaneously ・ Blend side A → Both side B and side C simultaneously blend

  As described above, when the blend surface processing is completed for all the received edge portions, the information processing apparatus 100 performs the blend surface processing by cutting every two of the received edge portions. The execution order in this case is extracted as an execution order pattern (third extraction means). Next, the information processing apparatus 100 calculates the volume of the final three-dimensional model created when the execution order pattern specified in S205 is executed (volume calculation means).

  All three-dimensional models of the above combinations are temporarily created, and the volume (volume) of each three-dimensional model is calculated and stored in the RAM. The calculation of S203 to S205 is repeated until it is determined in S202 that n edges selected in S108 are reached.

  In step S206, the information processing apparatus 100 uses a blended shape created in S201, S203, S204, and S205 excluding the maximum shape on the basis of the shape of the maximum volume from all the shapes. A differential set operation of a Boolean operation, which is a basic technique in CGS (Constructive Solid Geometry) expression, which is one method of solid modeling, is performed. Thereby, a differential shape can be obtained from S201, S203, S204, and S205 excluding the maximum volume shape and the maximum shape shown in FIG. Data is stored in the difference shape memory in S206.

In step S207, the information processing apparatus 100 calculates the same volume (calculated) by having the same shape among the volumes (volumes) of the three-dimensional models of all combinations stored in step S201, step S203, step S204, and step S205. 3D models having the same volume are grouped (grouping means).
At this time, the volume value of the difference shape obtained in S206 is calculated and digitized to facilitate grouping.
In this way, shapes having the same differential volume value from the maximum volume shape may be grouped as a three-dimensional model having the same shape.
For example, as a work step of the shape A in FIG.
-Blend side A-Blend side C-Blend side B-Blend side C-Blend side A-Blend side B-Blend side A and side C simultaneously-Blend side B together And
For example, as a work step of the shape B in FIG.
・ Blend side A, side B, and side C are blended simultaneously. ・ Bend side B is blended. → Side A is blended. → Side C is blended. ・ Side B is blended. It becomes.

In step S208, the information processing apparatus 100 determines the three-dimensional model that is the shape A in FIG. 8, determines the three-dimensional model that is the shape B in FIG. 8, and calculates the three-dimensional model of the determined shapes A and B. Store in the result shape storage table.
FIG. 5 will be described.
FIG. 5 shows a display screen in the present invention. The information processing apparatus 100 is displaying in S101.
Reference numeral 300 denotes general-purpose 3D CAD software.

Reference numeral 301 denotes a button developed by an add-on. Usually, in addition to these buttons, icons of PC (CAD) applications having various functions are displayed.
302 represents a selected edge of the target solid.
FIG. 6 will be described.
FIG. 6 shows a display screen in the present invention. The information processing apparatus 100 is displaying in S102.
Reference numeral 601 denotes a button for starting a blend simulation.
Reference numeral 602 denotes a button for closing after starting the blend simulation by mistake due to an operation error.
FIG. 7 will be described.
This is an image of the internal processing in S207.

It should be noted that the execution sequence pattern of the internal process in FIG. 7 is at least among the execution sequence patterns in which the execution order of the blend surface processing that can be operated by the user with respect to the plurality of received edge portions specified by the specifying unit in S110 is changed. One or more execution order patterns may be divided and displayed as execution order patterns respectively corresponding to the grouped three-dimensional models (execution order pattern display means). In this way, the user can grasp which execution order pattern results in the final shape. Furthermore, the execution order pattern displayed by the execution order pattern display means is the simplest if the one with the fewest number of operation procedures when the blend surface processing is completed is displayed on all the received edge portions. It is also possible to learn a simplified operation procedure.
FIG. 8 will be described.
FIG. 8 shows a display screen in the present invention. The information processing apparatus 100 is displaying in S110.

In 501, the shape of the displayed blend simulation result is selected. Similar functions include check boxes, select boxes, and radio buttons.
Reference numeral 502 denotes a button that adopts the blend simulation result obtained in 501 and actually changes the shape of the solid model.
Reference numeral 503 denotes a button used when canceling and closing without using the calculation result by the blend simulation displayed in 501.

  Reference numeral 504 denotes a shape that is most easily processed as solid modeling that can be easily processed with reference to the data of ease of processing among the calculation results obtained by the blend simulation.

  Reference numeral 505 denotes a shape that is easy to process next to 504 as solid modeling that is easy to process with reference to the data of the processability data among the calculation results obtained by the blend simulation.

  Further, the program according to the present invention is a program that allows a computer to execute the processing method of the flowcharts shown in FIGS. 3 and 4, and the storage medium according to the present invention is a program that allows the computer to execute the processing method of FIGS. Is stored in the external memory 411 of the information processing apparatus 100.

  As described above, a recording medium that records a program that implements the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU or MPU) of the system or apparatus stores the program stored in the recording medium. It goes without saying that the object of the present invention can also be achieved by executing the reading.

  In this case, the program itself read from the recording medium realizes the novel function of the present invention, and the recording medium storing the program constitutes the present invention.

  As a recording medium for supplying the program, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, DVD-ROM, magnetic tape, nonvolatile memory card, ROM, EEPROM, silicon A disk or the like can be used.

  Further, by executing the program read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (operating system) operating on the computer based on an instruction of the program is actually It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the processing and the processing is included.

  Furthermore, after the program read from the recording medium is written to the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, the function expansion board is based on the instructions of the program code. It goes without saying that the case where the CPU or the like provided in the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

  Further, the present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. Needless to say, the present invention can be applied to a case where the present invention is achieved by supplying a program to a system or apparatus. In this case, by reading a recording medium storing a program for achieving the present invention into the system or apparatus, the system or apparatus can enjoy the effects of the present invention.

Furthermore, by downloading and reading a program for achieving the present invention from a server, database, etc. on a network by a communication program, the system or apparatus can enjoy the effects of the present invention.
In addition, all the structures which combined each embodiment mentioned above and its modification are also included in this invention.

100 Information processing device (client terminal)
401 CPU
402 ROM
403 RAM (storage unit)
411 External memory (storage unit)

Claims (7)

A blending unit that creates a 3D model, a display unit that displays the created 3D model, and a blend surface processing command that instructs blend surface processing to be performed on a target surface of a blend surface that blends the displayed 3D model A support device that is used in a three-dimensional model creation application comprising processing execution means, and requests the application to execute the blend surface processing,
Accepting means for accepting a plurality of locations with intersections from the target location of the three-dimensional model displayed by the application as edge portions for executing the blend surface processing;
An execution order pattern in which the execution order of the blend surface processing that can be operated by the user with respect to the received edge portions when the blend surface processing is completed for all the received edge portions of the plurality of locations. Identifying means for identifying
Volume calculating means for calculating the volume of the three-dimensional model created when the specified execution order pattern is executed;
Grouping means for grouping three-dimensional models having the same calculated volume in the specified execution order pattern;
Simulation display means for displaying the grouped three-dimensional models in a comparable manner as a simulation of the three-dimensional model after the blend surface processing is completed on all of the received plurality of edge portions,
A support apparatus comprising: The plurality of locations that can be received by the receiving means are three or more edge portions,
When execution of the blend surface processing is completed for all of the received plurality of edge portions, the execution order when the received plurality of edge portions are simultaneously executed with the blend surface processing is extracted as the execution order pattern. First extracting means for
Execution order in the case where the blend surface processing is executed by chopping every one of the received edge portions when the blend surface processing is completed for all of the received plurality of edge portions. Second extracting means for extracting as an execution order pattern;
Execution order in the case where the blend surface processing is executed in every two places in the received plurality of edge portions when the execution of the blend surface processing is completed for all of the received plurality of edge portions. A third extraction means for extracting the execution order pattern as the execution order pattern;
The support apparatus according to claim 1, further comprising: At least one execution order pattern among the execution order patterns in which the execution order of the blend surface processing that can be operated by the user with respect to the received plurality of edge portions specified by the specifying means is grouped is grouped. Execution order pattern display means for classifying and displaying the execution order patterns corresponding to the three-dimensional models respectively;
The support apparatus according to claim 1, further comprising:   The execution order pattern displayed by the execution order pattern display means is characterized in that the number of operation procedures when the blend surface processing is completed at all the received edge portions is the smallest. The support device according to claim 3. A blending unit that creates a 3D model, a display unit that displays the created 3D model, and a blend surface processing command that instructs blend surface processing to be performed on a target surface of a blend surface that blends the displayed 3D model A control method by a support device that is used in a three-dimensional model creation application comprising processing execution means, and requests the application to execute the blend surface processing,
An accepting step in which the accepting means of the support device accepts a plurality of locations with intersections as edge portions for executing the blend surface processing from the target location of the three-dimensional model displayed by the application,
When the blending surface processing is completed for all of the received plurality of edge portions, the specifying unit of the support apparatus executes the blending surface processing that can be operated by the user with respect to the received plurality of edge portions. A specific process that identifies an execution order pattern that reorders the order; and
A volume calculation step in which the volume calculation means of the support device calculates the volume of the three-dimensional model created when the specified execution order pattern is executed;
A grouping step in which the grouping means of the support device groups three-dimensional models having the same calculated volume in the identified execution order pattern;
The simulation display means of the support device can compare the grouped three-dimensional models as simulations of the three-dimensional model after the blend surface processing has been completed on all the received edge portions. A simulation display process to display;
The control method characterized by including. program.
A blending unit that creates a 3D model, a display unit that displays the created 3D model, and a blend surface processing command that instructs blend surface processing to be performed on a target surface of a blend surface that blends the displayed 3D model A program that can be read and executed by a support device that is used in a three-dimensional model creation application including processing execution means, and requests the application to execute the blend surface processing,
The support device,
Accepting means for accepting a plurality of locations with intersections from the target location of the three-dimensional model displayed by the application as edge portions for executing the blend surface processing;
An execution order pattern in which the execution order of the blend surface processing that can be operated by the user with respect to the received edge portions when the blend surface processing is completed for all the received edge portions of the plurality of locations. Identifying means for identifying
Volume calculating means for calculating the volume of the three-dimensional model created when the specified execution order pattern is executed;
Grouping means for grouping three-dimensional models having the same calculated volume in the specified execution order pattern;
Simulation display means for displaying the grouped three-dimensional models in a comparable manner as a simulation of the three-dimensional model after the blend surface processing is completed on all of the received plurality of edge portions,
A program characterized by making it function. Creating means for creating a three-dimensional model;
Display means for displaying the created three-dimensional model;
Blend processing execution means for instructing that the blend surface processing is executed on the target portion of the blend surface for blending the three-dimensional model to be displayed;
Accepting means for receiving a plurality of locations with intersections from the target location of the displayed three-dimensional model as edge portions for executing the blend surface processing;
An execution order pattern in which the execution order of the blend surface processing that can be operated by the user with respect to the received edge portions when the blend surface processing is completed for all the received edge portions of the plurality of locations. Identifying means for identifying
Volume calculating means for calculating the volume of the three-dimensional model created when the specified execution order pattern is executed;
Grouping means for grouping three-dimensional models having the same calculated volume in the specified execution order pattern;
Simulation display means for displaying the grouped three-dimensional models in a comparable manner as a simulation of the three-dimensional model after the blend surface processing is completed on all of the received plurality of edge portions,
A three-dimensional model display device comprising:

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