KR20140045102A - Three-dimensional modeling system using parametric data - Google Patents

Abstract

The present invention is a three-dimensional modeling system using parametric data including an input module for user input; an output module for information representation; a storage module storing parametric data corresponding to an object; and a control module receiving a selection of an object for three-dimensional modeling through the input module, creating a command option window through the input module and outputting the command option window to the output module, receiving a user input through the input module by using the output command option window, storing data values included in the parametric data in the storage module, creating a shape corresponding to the object according to the user input through the input module with reference to the data values stored in the storage module and output the shape to the output module. According to the present invention, efficiency of memory use can be increased, and convenience and accuracy of the data change can be provided. [Reference numerals] (10) Input module; (20) Storage module; (30) Output mudlue; (40) Control module

Description

Three-dimensional modeling system using parametric data}

The present invention relates to a modeling technique, and more particularly, in shaping a three-dimensional shape of an object in a virtual space inside a computer, an object is created, changed, and represented by using parametric data. A three-dimensional modeling system using parametric data.

3D modeling technology is a technology for analyzing, designing, and simulating objects in the real world.The 3D modeling program automatically creates objects according to user input and partially partitions, enlarges, reduces, rotates, Allows connection with other objects, creation of lines or faces, etc.

Such a program expresses design information stored in a computer on a display device to assist a user in designing while visually confirming the design information, thereby allowing a relatively simple three-dimensional shape of a curved surface to be designed.

A conventional three-dimensional modeling program forms a three-dimensional object through a series of predefined sequential command steps. That is, when the user clicks on an icon provided on the program, a command procedure for creating a 3D object is started, and the user inputs a command title or an option for the command using a mouse or a keyboard according to the command procedure. .

In this case, the conventional 3D modeling program receives an input for an option of each command in a dialog manner, and stores the input value corresponding to the member variable on each command class. In the process of executing a command corresponding to the object, the corresponding shape is directly displayed on the screen by referring to data of each variable.

However, such a conventional program needs to generate a dialog resource file corresponding to each instruction in order to implement the instruction, thereby increasing the allocated memory and increasing the computational burden.

In addition, when resource changes occur, class member variables are changed, resulting in inefficiency, additional cost of performing the corresponding process, unified management of data is difficult, and there is a limit that increases the probability of mistakes by developers.

An object of the present invention for solving the above problems is to provide a three-dimensional modeling system using parametric data that can improve the convenience of data change and efficiently use the memory by using a parametric data structure.

A three-dimensional modeling system using the parametric data of the present invention for achieving the above object, the input module for user input, the output module for information representation, storage for storing parametric data corresponding to the object A module and an object for 3D modeling through the input module, and generates a command option window by referring to the parametric data stored in the storage module and outputs the command option window to the output module. Receives a user input through the input module to store the data value included in the parametric data in the storage module, the object in accordance with the user input through the input module with reference to the data value stored in the storage module It includes a control module for generating a shape corresponding to the output to the output module .

In the three-dimensional modeling system using the parametric data of the present invention, the parametric data is characterized in that it comprises one or more of data values, data types, strings, whether the connection with other objects to represent the object. .

In the three-dimensional modeling system using the parametric data of the present invention, the command option window is characterized in that to provide an interface for inputting the data value or information on the connection with the other object.

In the three-dimensional modeling system using the parametric data of the present invention, the parametric data is characterized in that it is configured to refer to other information via a specific information.

In the three-dimensional modeling system using the parametric data of the present invention, the parametric data is characterized by including a pointer value indicating the other information.

In the three-dimensional modeling system using the parametric data of the present invention, the parametric data is characterized in that it comprises an index representing the data, it is configured to refer to the other information via the index.

In the 3D modeling system using the parametric data of the present invention, the parametric data is configured so that different objects can refer to the different information in common by using the index.

In the three-dimensional modeling system using the parametric data of the present invention, the control module is characterized by expressing the shape as a Bezier curve, Bezier surface, NonUniform Rational B-Spline (NURBS) curve or NURBS surface.

In the three-dimensional modeling system using the parametric data of the present invention, the control module is characterized in that for outputting the two-dimensional shape of the generated object in accordance with the input through the input module to the output module.

According to the 3D modeling system using parametric data according to the present invention, the following effects can be expected.

First, the convenience of data change is provided by using a parametric data structure in the design of three-dimensional objects.

Second, the parametric data of the present invention can increase the efficiency of memory use by configuring the data into a dictionary map data structure so as to share redundant information between different objects, thereby reducing the computational load.

Third, the parametric data supports variable data change, which makes it easy to add and delete option information.

1 is a block diagram of a three-dimensional modeling system using parametric data according to an embodiment of the present invention.
FIG. 2 is an exemplary diagram illustrating an interface of a program that provides 3D modeling according to the embodiment of FIG. 1.
3 is an exemplary diagram illustrating parametric data constructed according to the embodiment of FIG. 1.
4 is a flowchart of a 3D modeling method using parametric data according to an embodiment of the present invention.

In the following description, only parts necessary for understanding the embodiments of the present invention will be described, and the description of other parts will be omitted so as not to obscure the gist of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor is not limited to the meaning of the terms in order to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

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

1 is a block diagram of a three-dimensional modeling system 100 using parametric data according to an embodiment of the present invention.

Referring to FIG. 1, the 3D modeling system 100 of the present embodiment includes an input module 10, a storage module 20, an output module 30, and a control module 40.

At this time, the three-dimensional modeling system 100 according to the present embodiment is a function to support the design and shape of the type of objects, such as buildings or internal equipment in a virtual space, and has a user input, output and arithmetic function The device may be mounted on a computer, a notebook, a personal digital assistant (PDA), a smart phone, or the like.

The input module 10 provides a plurality of keys for manipulation of the 3D modeling system 100, and receives a selection signal according to a user's key selection and transmits the selection signal to the control module 40. The input module 10 may include an input device such as a mouse, a keyboard, a touch pad, or a touch screen.

The storage module 20 is a storage function for storing parametric data corresponding to each object in the 3D modeling system 100.

Parametric data refers to data having a structure associated with each other by using a parameter. The parametric data of the present invention is configured to refer to other information through specific information among various pieces of information included in the parametric data.

In this case, the parametric data may include information such as a data value for representing an object, a data type, a string, and whether or not it is connected to another object, and specific information by using a pointer value that functions as a double parameter. May refer to other information, and may be configured to refer to other information by using a corresponding index after separately generating a parameter such as an index.

The parametric data of the present embodiment may include information about various kinds of objects. In this case, when the pointer value or the index parameter is the same in the data of different objects, the corresponding information becomes the same.

That is, the parametric data in the present embodiment may include a pointer value indicating the related information so that specific information may refer to other information. In the case of data representing different objects, the same pointer value may be used. The same information can be referred to using.

In this way, rather than storing the information for each object separately, by storing the duplicated information for each object only once, and by using a parameter in expressing the shape of each object, the storage of the storage module 20 You can save space.

In addition, the storage module 20 may store a program necessary for controlling the operation of the 3D modeling system 100 and data generated during the execution of the program, and may include a volatile memory device or a nonvolatile memory device.

The output module 30 serves to express information in the 3D modeling system 100 and may include a visual display device such as a CRT monitor, an LCD monitor, or a touch screen monitor. In this case, the touch screen monitor simultaneously functions as a display device and an input device.

The output module 30 may display various function menus executed in the 3D modeling system 100 and a work window for designing shapes of objects.

The control module 40 controls the overall operation of the 3D modeling system 100 including the input module 10, the storage module 20, and the output module 30, and may include a computing device therefor. have.

The control module 40 outputs a menu for designing the shape of the object through the output module 30, and then receives the input module 10 from the user to select an object for 3D modeling. For example, the control module 40 may receive a selection of an object by detecting a click of a specific icon on the program menu through the input module 10.

Thereafter, the control module 40 refers to the parametric data corresponding to the selected object in the storage module 20 to generate a command option window for receiving an option corresponding to the object and express it to the output module 30. . That is, when a specific object to be designed by the user is selected, the control module 40 identifies a portion that needs to be inputted by the user in order to express the shape of the object, and opens a command option window for allowing the user to input information. To provide.

For example, the parametric data corresponding to the selected object contains information fields such as data values, data types, strings, and whether to connect to other objects, such as the width, height, thickness, and material of the object. If a user input is required to form a shape by connecting to a data value such as a color or another object, the control module 40 can input information on the data value or whether to connect to another object in the command option window. Provides an interface.

Subsequently, when various information is input through the command option window using the input module 10, the control module 40 stores the information input to the storage module 20, wherein the parametric data is stored through the specific information. It may be configured to refer to other information, and may include a pointer value indicating corresponding other information.

In this case, the control module 40 may generate an index indicating the data corresponding to the object and store the index together with the parametric data of the object, and may refer to other information through the index.

In this embodiment, the data of the parametric structure is generated and stored in this manner, so that even if some data is changed, only the data of the corresponding part is changed, so that other data connected by using a parameter may not be affected. It provides convenience and accuracy in designing the shape of an object.

In addition, the parametric data stores data shared by different objects only once in a memory in the storage module 20, and when multiple objects have the same pointer value or index, the information can be commonly referred to to store the memory. Space can be used efficiently.

In this embodiment, the parametric data may refer to other information through specific information or an index. In this case, the parametric data corresponding to each object may be configured as a dictionary map data structure.

After the control module 40 stores the parametric data on the object to be designed by the user through this process, the shape of the object is generated according to a user input through a keyboard or a mouse of the input module 10, and the output module Output to 30 to check visually.

At this time, the control module 40 automatically generates a bezier curve / surface, a nonuniform Rational B-Spline (NURBS) curve / surface, etc. according to a user input through the input module 10 and output module 30. It can be displayed on the screen.

Bezier curve (surface) is a curve (surface) that indirectly defines the derivatives of both ends of a curve, using the position of both endpoints and the derivatives of two other points that are not on the curve to represent a three-dimensional curve. NURBS curves (curves) are referred to as non-uniform free B-spline curves (curves) and refer to B-spline curves or surfaces defined by a series of weighting control points and one or more note vectors. In the present invention, it is possible to model the three-dimensional object in this way.

An interface of a program providing three-dimensional modeling according to the present invention will be described in more detail with reference to FIG. 2.

FIG. 2 is an exemplary diagram illustrating an interface of a program that provides 3D modeling according to the embodiment of FIG. 1. The program of the present embodiment supports the design of buildings and internal facilities as 3D objects, and the technical spirit of the present invention is not limited thereto.

Referring to FIG. 2, the program interface according to the present embodiment includes a ribbon menu 1, a work menu 2, a command menu 3, a command option window 4, a property window 5, and a shape screen 6. It includes.

The ribbon 1 provides a selection window for basic operations in a program that provides three-dimensional modeling, and may include an icon for selecting a function by clicking with a mouse. In this case, the user may select an object to be designed through the ribbon 1.

The work menu 2 enables work management on the floor of the building, the structure of the building, the internal facilities, etc., in relation to the work object.

The command menu 3 supports the selection of lines, faces, etc. for designing objects.

The command menu 3 of the present embodiment supports automatic generation of bezier curves (surfaces), nonuniform Rational b-spline (NURBS) curves (surfaces), etc. according to user input through a mouse or keyboard. do.

The command option window (4) is connected to other objects or data values such as width, height, thickness, material, color, etc. of the parametric data of the selected object through the ribbon (1) to directly input by the user. Provides an interface for entering information about. The information entered through the command options window 4 is then referenced to create the object.

The property window 5 is a window indicating the property of the object to be designed.

The shape screen 6 represents a three-dimensional modeling shape of an object designed by the user. The shape screen 6 may be a variety of forms in which the user may visually recognize the object, such as enlargement / reduction, rotation, and combination / separation of each object. Provide visual information.

A process of referring to each information included in the parametric data according to the present invention will be described in more detail with reference to FIG. 3.

3 is an exemplary diagram illustrating parametric data constructed according to the embodiment of FIG. 1.

Referring to FIG. 3, a command option window 4 is located at the top, and tables are located at both sides of the bottom thereof, and information included in the table is matched with a dictionary map data structure using an index.

"Wall" on the left side of the command options window 4 at the top means that the object of 3D modeling is a wall, and "Unconnected" of "Height Type" means that the wall is not connected to another object. Height "indicates that the height value of the wall is" 4000 ", and" Chain "provides an interface that allows you to choose whether to specify a continuous specification for specifying the start and end points of the object shape.

On the right side of the lower left table, the data "Wall" represents an object, the corresponding index is set to "0", and the data type is "String". At this time, it can be seen that the index "0" is located in the right table, and the corresponding string is blank.

In addition, the index corresponding to the data "0" of the lower left table is "10" and the data type is "Integer". At this time, the index "10" is located in the table on the right side and the corresponding string is "Height Type". At this time, since the index corresponding to the data "0" in the lower left table is "10", when searching for the string corresponding to the index "10" in the table on the right, it can be seen that the string is "Height Type".

The rest of the data is configured in the same manner, and according to the present embodiment, it is possible to refer to the string corresponding to the corresponding index in the right table according to the index value of the lower left table.

In this case, the table on the right side may be information that is jointly referenced by other objects. In this case, the other object may set an index in the parametric data in this manner and refer to a string in the table on the right side using the index. It is possible.

In the present embodiment, the index is used to refer to the data. However, according to the present embodiment, other information may be referred to by means of information other than the index. In this case, a pointer value may be used.

A process of 3D modeling according to the present invention will be described in more detail with reference to FIG. 4.

4 is a flowchart of a 3D modeling method using parametric data according to an embodiment of the present invention.

Referring to FIG. 4, the 3D modeling system visually outputs a menu for shape design and then receives an object for design according to a user input (S1).

Thereafter, the 3D modeling system refers to parametric data corresponding to the selected object, and generates and outputs a command option window for selecting an option corresponding to the object (S2).

The parametric data in the present embodiment may include information fields such as data values, data types, strings, and whether to connect with other objects to represent an object, and the width, height, thickness, material, color, etc. of the double object. If user input is required to form a shape by connecting to the data value or other object of the 3D modeling system, the 3D modeling system provides an interface for inputting data value and information about connection to other objects through the command option window. to provide.

When various information is input through the command option window, the 3D modeling system stores the input information (S3).

In step S3, the parametric data may be configured to refer to other information through specific information, and the parametric data may include a pointer value indicating corresponding other information.

In addition, the parametric data in step S3 may include an index indicating data corresponding to the object, and the index serves to refer to other information through this.

After storing the data in step S3, the 3D modeling system generates a shape of the object and visually outputs the object with reference to the user input through the input device and the stored parametric data (S4).

3D modeling method according to an embodiment of the present invention described above is implemented in the form of program instructions that can be executed by various computer means may be recorded in a computer-readable recording medium. At this time, the computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination. On the other hand, the program instructions recorded on the recording medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software.

The computer-readable recording medium includes a magnetic recording medium such as a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical medium such as a CD-ROM and a DVD, a magnetic disk such as a floppy disk, A magneto-optical media, and a hardware device specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. The program instructions also include machine language code, such as those generated by the compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention.

It should be noted that the embodiments disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

1: ribbon
2: Action menu
3: Command Menu
4: Command Options window
5: Properties window
6: geometry screen
10: input module
20: storage module
30: output module
40: control module
100: 3D modeling system

Claims (9)

An input module for user input;
An output module for representing information;
A storage module for storing parametric data corresponding to the object;
After receiving an object for 3D modeling through the input module, the command option window is generated by referring to the parametric data stored in the storage module and output to the output module. Receives a user input through the input module and stores the data value included in the parametric data in the storage module, and corresponding to the object according to the user input through the input module with reference to the data value stored in the storage module A control module for generating a shape and outputting the shape to the output module;
Three-dimensional modeling system using parametric data comprising a. The method of claim 1,
The parametric data is a three-dimensional modeling system using parametric data, characterized in that it comprises one or more of the data value, data type, string, whether the connection with other objects to represent the object. 3. The method of claim 2,
The command option window is a 3D modeling system using a parametric data, characterized in that to provide an interface for receiving the input of the data value or information about the connection with the other object. The method of claim 1,
The parametric data is a three-dimensional modeling system using parametric data, characterized in that configured to refer to other information through a specific information. 5. The method of claim 4,
The parametric data is a three-dimensional modeling system using a parametric data, characterized in that it comprises a pointer value indicating the other information. 5. The method of claim 4,
The parametric data includes an index representing the data, and the 3D modeling system using the parametric data, characterized in that configured to refer to the other information via the index. The method according to claim 6,
The parametric data is a three-dimensional modeling system using a parametric data, characterized in that different objects can be configured to refer to the other information in common using the index. The method of claim 1,
The control module is a three-dimensional modeling system using parametric data, characterized in that to represent the shape as a Bezier curve, Bezier surface, NonUniform Rational B-Spline (NURBS) curve or NURBS surface. The method of claim 1,
The control module is a three-dimensional modeling system using parametric data, characterized in that for outputting the two-dimensional shape of the created object in accordance with the input through the input module.

Images