KR101762629B1 - User view visualization method and system for BIM design and monitoring in 3D BIM virtual space - Google Patents

Abstract

Disclosed are a user view visualization method and a user view visualization system to design and monitor building information modeling (BIM) in a three-dimensional (3D) BIM virtual space. According to one embodiment of the present invention, a method to visualize a user view in a client including a display unit wherein a main map and a navigator map for a project space are displayed at the same time comprises the following steps of: (a) receiving user input on the navigator map; (b) extracting 2D coordinates corresponding to the user input; (c) inferring 3D coordinates of a camera from the 2D coordinates; (d) moving the camera to the 3D coordinates, and then extracting and storing the position and viewing direction of the camera; (e) determining whether an object corresponding to the user input exists in the viewing direction; and (f) displaying a screen in accordance with a view of the camera on the main map when the object exists, and switching the viewing direction to make the object placed in the viewing direction and then displaying a screen in accordance with the view of the camera on the main map when the object does not exist.

Description

Technical Field [0001] The present invention relates to a visualization method and a visualization system of a user view for designing and monitoring BIM in a virtual 3D space,

The present invention relates to a visualization method and visualization system for a user view for BIM design and monitoring in a 3D BIM (Building Information Modeling) virtual space.

3D virtual reality is actively required for the designer of the design office, the architect of the construction site, the facility of the manufacturing industrial factory, and the facility manager to utilize the work. Many of the workers in the industrial field need a service model and a 3D graphic authoring tool that can collaborate in various tasks such as design, construction, and maintenance by accessing 3D virtual sites or factories at the same time. We have developed and serviced cloud-based 5D BIM authoring tools and are constantly researching and developing for 3D viewing through fast searching and location movement in infinite 3D space.

Generally, the navigator view of the 3D graphic model production program displays the position information of the 3D graphic model production program when the user clicks the corresponding position on the navigator view for the position where the user desires to move without operating the mouse by moving the mouse An operation method of moving the camera position of the main map and allowing the user to move easily is applied. However, moving the position of the camera does not change the direction in which the camera lens is viewed, so the desired 3D model does not appear in the main map.

Korean Patent Publication No. 10-2001-0064680 (published on July 11, 2001) - 3D virtual space web navigation service method

The present invention relates to a method and system for controlling a camera that determines a camera view to be displayed on a main map when a real-time user requests a high-speed movement of the camera through a navigator map, And provides a visualization method and a visualization system for providing a user view.

In the present invention, a user clicks a navigation map in a virtual space of a 3D BIM (Building Information Modeling) to rapidly move a user view to a desired space and position, and a BIM modeling object that the user designs or monitors is centered on a user view And to provide a visualization method and a visualization system of a user view for efficiently visualizing the user view.

Other objects of the present invention will become more apparent through the following preferred embodiments.

According to an aspect of the present invention, there is provided a method of visualizing a user view in a client including a display unit in which a main map and a navigator map for a project space are displayed together, the method comprising: (a) receiving user input on the navigator map; (b) extracting two-dimensional coordinates corresponding to the user input; (c) deducing camera three-dimensional coordinates from the two-dimensional coordinates; (d) extracting and storing the position and the view direction of the camera after moving the camera in the three-dimensional coordinates; (e) determining whether an object corresponding to the user input exists in the view direction; And (f) if the object exists, displaying a screen according to the view of the camera in the main map, and if the object does not exist, switching the view direction so that the object is positioned within the view direction And displaying a screen according to the view of the camera on the main map.

If an arbitrary object corresponding to the user input is selected, the step (c) includes the steps of: assigning a reference point coordinate of the selected object as a direction vector; Calculating temporary three-dimensional coordinates by combining the Z coordinates of the reference point coordinates and the X, Y coordinates of the two-dimensional coordinates; And calculating and extracting, as the three-dimensional coordinates of the camera, coordinates which are moved by a predetermined distance in the direction opposite to the direction vector in the temporary three-dimensional coordinates.

The reference point coordinates of the object may be provided to the server engine managing the 3D information management database.

If an empty space is selected without any object corresponding to the user input, the step (c) combines the estimated Z coordinate using the average value of the project space and the X and Y coordinates of the two-dimensional coordinate And calculating temporary three-dimensional coordinates.

If no empty space is selected and no object corresponding to the user input is selected, the step (c) may include combining the Z coordinate estimated using the reference point coordinates of the project space and the X and Y coordinates of the two-dimensional coordinate And calculating temporary three-dimensional coordinates.

The step (f) may switch the view direction of the camera to the reference point of the project space.

Between the steps (d) and (e), it is determined whether or not the camera overlaps with another object in the virtual space at the position, and when the overlap occurs, the position of the camera is changed within a predetermined correction range Step < / RTI >

In the step (f), if the object does not exist in the view direction, the reference point of the object is scanned while the view of the camera is rotated 360 degrees. If the reference point of the object is scanned, To the camera handle module with the direction vector of the camera.

The presence or absence of an object corresponding to the user input may be determined by determining whether a collision occurs within a predetermined distance by shooting an X-ray perpendicularly to the XY plane and determining that the detected object is selected by the user input have.

The project space may be a BIM (Building Information Modeling) -based 3D virtual space related to a project in which one or more clients can be designed and monitored.

According to another aspect of the present invention, there is provided a client engine for designing and monitoring a three-dimensional project space, comprising: a display unit for displaying a main map and a navigator map together; A user input for receiving user input for any location on the navigator map; Dimensional coordinates of a position corresponding to the user input, requesting the server engine for object information about the object corresponding to the position and receiving the transmitted information, and receiving three-dimensional coordinates of the camera based on the two- A navigator map processing module for inferring the navigation map; And a main map processing module for moving the camera corresponding to the three-dimensional coordinate, switching the view direction of the camera toward the object, and controlling the camera to display the camera view on the main map A client engine system is provided.

The navigator map processing module calculates temporary three-dimensional coordinates by combining the Z coordinate corresponding to the reference point information of the object and the X, Y coordinates of the two-dimensional coordinate when the object corresponding to the position exists, Dimensional coordinate of the camera by a predetermined distance in the direction opposite to the direction vector corresponding to the reference point information in the dimensional coordinates.

The navigator map processing module calculates the three-dimensional coordinates of the camera by combining the Z coordinate corresponding to the average value or the reference point of the project space and the X and Y coordinates of the two-dimensional coordinate when the object corresponding to the position does not exist And extracted.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to the present invention, when a user utilizes a method of moving a view easily and quickly by a mouse click in a navigator map, a method of eliminating a case in which objects (objects) are not seen along the direction of a camera lens, Has the effect of allowing objects (objects) to be checked easily and quickly in the 3D virtual space main map even if any empty space is clicked.

In addition, when the real-time user requests the high-speed movement of the camera through the navigator map, the camera which determines the camera view to be displayed on the main map is controlled and manipulated for the camera to provide an optimal view to the user .

In addition, in the virtual space of the 3D BIM, the user can click on the navigation map to quickly move the user view to the desired space and position, thereby effectively visualizing the BIM modeling object that the user designs or monitors at the center of the user view have.

FIG. 1 schematically illustrates a configuration of a user view visualization system according to an embodiment of the present invention.
2 is a flowchart of a method of visualizing a user view performed in a 3D navigator map processing module and a 3D virtual space main map processing module according to an embodiment of the present invention;
3 is a diagram illustrating a scenario in which a 3D camera position shift and a camera direction view are manipulated,
4 is a view showing a main map and a 3D navigator map screen of a 3D virtual authoring tool program,
FIG. 5 is a diagram illustrating a screen in which a camera position and a camera view direction in a 3D virtual space main map are manipulated by a user by clicking on a user's mouse in the 3D navigator map,
FIGS. 6 and 7 are diagrams for explaining a correlation between a 3D navigator map and a camera position in a 3D virtual space; FIG.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

As described above, there is a problem that the 3D model to be checked by the user does not appear in the main map because the direction of the camera lens is not changed when moving the position of the camera. Hereinafter, a user view visualization method and apparatus for solving the problem will be described.

2 is a block diagram illustrating a 3D navigator map processing module and a 3D virtual space main map processing module according to an exemplary embodiment of the present invention. Referring to FIG. 1, there is shown a user view visualization system according to an exemplary embodiment of the present invention. FIG. 3 is a view showing a scenario for operating a 3D camera position movement and a camera direction view, FIG. 4 is a diagram showing a main map of the 3D virtual authoring tool program and a 3D navigator map screen And FIG. 5 is an exemplary screen view in which a camera position and a camera view direction in a 3D virtual space main map are displayed by being manipulated by a user by clicking a user's mouse in the 3D navigator map, and FIGS. 6 and 7 are views showing a 3D navigator map, And the camera position in the space.

The visualization system of the user view according to an exemplary embodiment of the present invention includes a main map showing a camera view corresponding to a camera position and direction in a 3D virtual space, And a navigator map for guiding the view position. The camera view in the main map is switched according to a user input (e.g., a mouse click) in the navigator map, thereby preventing the objects located in the 3D virtual space from being invisible, thereby providing an optimal view to the user do.

In this specification, the 3D virtual space includes a building information modeling (BIM), which is a digital model that expresses the shape and properties of the facility by information so that all the information generated throughout the lifecycle of the facility can be utilized based on the 3D information model, Based virtual space. Hereinafter, it may be referred to as a virtual space or a BIM virtual space.

The project space refers to a virtual space related to any project in which a plurality of designers participate in the design and monitoring of facilities implemented by BIM.

The 3D object represents a facility or a facility that constitutes a facility itself or a facility designed in a virtual space. Hereinafter, the 3D object may also be referred to as a 3D model, an object, an object, a model, an object, and the like.

The user view visualization system according to the present embodiment includes a server operated by a visualization service provider and a client used by at least one visualization service user (BIM designer). The server may be implemented in the server engine 100, and the client may be implemented in the client engine 200.

The server engine 100 services (data storage, inquiry, processing, and the like) data that is connected to one or more clients and operated and processed.

The server engine 100 may include a 3D information management database 110, a connection management processing module 120, and a communication management processing module 130.

The connection management processing module 120 manages the connection status of the client. In detail, the progress log of a job is stored and managed in the 3D information management database 110 until the client logs out from the connection (Sing On). In addition, the connection management processing module 120 may perform various tasks such as group management, user management, authentication, access right, and security.

In addition, the connection management processing module 120 supports mutual data synchronization between clients. When the first user adds or changes an object in the project space, it can support synchronization so that the changed information is transmitted to the other users connected to the project space by reflecting the changed information in the background manner.

The communication management processing module 130 manages communication between the server and the client. Communication between the server and the client can be performed through a middleware of a multi-queue communication method. Accordingly, the communication management processing module 130 can provide functions such as communication connection and disconnection between the server and the client, data processing of the queue, communication protocol setting, and the like.

The 3D information management database 110 may store and manage information about 3D objects created by the 3D model authoring tool 300 or produced by a separate authoring tool. The 3D object information may include basic attribute information related to the shape of a mesh, a face, a polygon, and the like, and a user attribute value to be registered (input) when the user imports.

Also, when the user places the 3D object in the project space through the client, the location attribute information including the location coordinates, the direction values, and the reference point coordinates can also be stored and managed. In addition, additional attribute information for 3D objects such as date, registered user name, 3D object name, manager, characteristic, usage, size, maintenance, price, and the like can also be stored and managed.

When the server engine 100 receives the 3D object information request from the client engine 200, the server engine 100 searches the database 110 to find the location information (reference point information) of the 3D object, the current camera position in the virtual space, The client engine 200 can respond.

The client may be implemented as a client engine 200. In addition, the 3D model authoring tool 300 can also function as a client.

The 3D model authoring tool 300 is a tool for authoring a 3D object placed in a project space and is a tool for initially creating various 3D objects (i.e., a 3D model) managed by the server engine 100.

The 3D model authoring tool 300 may include a 3D model manager 310 and a reference point manager 320.

The 3D model management unit 310 is a part for creating a 3D object or editing a generated 3D object.

The reference point management unit 320 generates and sets a reference point (Pivot) of the 3D object when the 3D object is created by the 3D model management unit 310. [ The reference point may be referred to as a center point.

Since the 3D object is produced in the three-dimensional space, the reference point of the three-dimensional space becomes the reference point of the 3D object. That is, the reference point of the 3D model authoring tool 300 may be the reference point of the 3D object.

For example, if a user wants to set a reference point in a mobile phone when making a mobile phone as a 3D object, the user places the reference point in the front corner of the cell phone, the bottom corner at the back or the center of the cell phone at the origin of the 3D model authoring space When you create a model, that position becomes the reference point.

After completing the created 3D object and exporting it, its position becomes (0,0,0). When the 3D object is imported to the server engine 100 or the client engine 200, the 3D object is placed at a predetermined relative coordinate position with respect to the 3D reference point (absolute reference point) of the client engine 200. At this time, the distance and direction values of the 3D object are automatically generated from the vector up to the object reference point with respect to the absolute reference point.

A user (BIM designer) can create various 3D objects using the 3D model authoring tool 300 and register the 3D objects and their attribute information in the server engine 100.

In addition, the client may include a client engine 200. The client engine 200 provides a variety of camera views for a virtual space (project space) in which various 3D objects are arranged, thereby displaying a virtual reality to the user and providing a navigator map for moving at a high speed within the virtual space.

Referring to FIG. 4, a program screen 500 provided by the client engine 200 executing on the client is illustrated. The program screen 500 can be divided into a main area 502 occupying a relatively large area and a sub area 504 occupying a smaller area than the main area 502. The main area 502 includes a main map 510 and the navigator map 520 may be displayed in the sub-area 504.

The client engine 200 temporarily stores the current camera position and the camera view direction and calculates the camera position and camera view direction obtained by requesting information of the clicked object information from the server engine 100, Movement can be manipulated.

The client engine 200 includes a main map processing module 210 and a navigator map processing module 220. The user input unit 230 and the display unit 240 may be included.

The user input unit 230 receives a user input for selecting a user to view the camera view or a location to view the camera view.

The user input unit 230 may be a mouse and receive a user input through a mouse click when the cursor displayed on the display unit 240 reaches a target position. You can also receive user input through the keyboard instead of the mouse. Alternatively, the user input unit 230 and the display unit 240 may be touch screen panels to receive user input in a touch manner.

The display unit 240 displays a program screen 500 as shown in FIG. Or may be formed integrally with the user input unit 230 in the case of a touch screen panel.

Hereinafter, a method of visualizing the user view performed by the navigator map processing module 220 and the main map processing module 210 will be described in detail with reference to FIG.

(1) User input: User input is received through the user input unit 230. In this embodiment, the client can enable the design of the 3D object (e.g., BIM design) within the project space as the 3D model authoring tool 300. Alternatively, the client may function solely as a viewer, allowing only monitoring of the project space (e.g., BIM monitoring). In any case, the navigator map 520 implemented in the program screen allows the user to input a desired position in the infinite 3D virtual space to a desired position in a predetermined manner (e.g., mouse click, touch input, etc.). Hereinafter, for ease of understanding and explanation, it is assumed that a user input is made by mouse click.

2D coordinate extraction: Two-dimensional coordinates of the clicked position on the navigator map 520 may be extracted corresponding to the user input. The extracted two-dimensional coordinates may be transmitted to the navigator map processing module 220.

Since the inside of the navigator map 520 is related to the three-dimensional virtual space, the screen represented by the display unit 240 is displayed in two dimensions, so that it is possible to extract only the two-dimensional X and Y coordinates with respect to the user input. The extracted X, Y coordinates are stored in the temporary storage space of the memory.

(3) 3D coordinate calculation: The navigator map processing module 220 deduces the three-dimensional coordinates using the extracted two-dimensional coordinates. The 3D reasoning method is as follows.

When the user clicks a specific object in the navigator map, the X, Y, and Z coordinates of the reference point of the selected object are substituted into the direction vector. Then, the 3D coordinate can be calculated by combining the Z coordinate of the selected object with the X and Y coordinates based on the clicked two-dimensional coordinates. In the three-dimensional coordinates thus generated, the coordinates moved by a distance (eg, 10 m) specified in the direction opposite to the direction vector generated earlier are calculated and extracted as camera three-dimensional coordinates. Here, the reference point information of the object may be provided to the server engine 100 by request.

Or, if the user clicks an empty space in the navigator map, the Z coordinate can not be found because there is no selected object. In this case, the Z coordinate can be estimated using the average value of the project space. The average value of the project space means the average of the Z coordinates of the reference points of various objects belonging to the project space.

Alternatively, three-dimensional coordinates may be calculated using the Z coordinate of the reference point of the project space instead of the average value of the project space.

④ Extraction and storage of camera position and camera view direction: When the 3D coordinates are calculated, the camera is moved to the calculated coordinates within the virtual space. Then, the navigator map processing module 220 stores the current camera position in the position temporary variable (temp_pre_camera_pos) and stores it in the direction temporary variable (temp_pre_camera_vector) as the camera view direction vector. The current camera position and the camera view direction vector can be requested and provided to the server engine 100.

(5) Calculation of camera space and position coordinates to be moved: Then, the navigator map processing module 220 determines whether the camera arrangement at the position to be moved according to the previously calculated three-dimensional coordinates overlaps with other objects in the virtual space, thereby causing no problem in viewing. If there is no abnormality, the camera position coordinate value is kept in the temporary variable. If a problem occurs, it is possible to add a predetermined range of correction value (eg, 1 to 50 m) in the temporary temporary variable (temp_pre_camera_pos) Is confirmed through a finite routine thread. Then, the position coordinate value when the overlap is eliminated is updated to the temporary variable.

(6) Camera Movement: The main map processing module 210 extracts a temporary temporary variable and a temporary temporary variable temporarily stored in the navigator map processing module 220 and transmits a command to move the camera to the corresponding position in the actual virtual space, To the module. In addition, the camera handle module switches the camera view direction through the camera view direction vector information (directional temporary variable). Here, the camera handle module may be included in the main map processing module 210.

⑦ Determine whether an object exists in the camera view: Move the camera according to the operation in ⑥ and judge whether the object selected by the user exists in the actual camera view. The presence or absence of the object can be determined by determining whether the reference point coordinate of the object exists in the camera view. It can return true if it exists, or false if it does not.

⑧ Exist: If the object exists and true is returned, the API of the camera handle module is called.

⑨ ⑩ ⑩ ⑩ ⑩ /.................................. It rotates 360 degrees through the thread on the camera handle module and scans the object reference point of the position selected by the user. If a user-selected location is found during the scan, the scan is stopped and the retrieved vector information (changed camera view direction vector) is passed while calling the API of the camera handle module.

⑪ Apply main map: When the camera handle module is called and module processing is completed, the main map shows the object selected by the user and the process can be terminated normally.

⑫ User confirmation: The user can visually check the object and input necessary information again with the mouse or the like.

In the present embodiment, a formula for obtaining a camera movement and a lens direction in a three-dimensional virtual space when a mouse is clicked at a position where the user wants to move in the navigator map expressed in two dimensions will be described in more detail with reference to FIGS. 6 and 7 . Fig. 6 shows a navigator map, and Fig. 7 shows a virtual space.

(A) the position where the user clicked the mouse in the navigator map (see point 1 in Fig. 6)

X axis: Xm, Y axis: Ym

(B) The camera current position of the virtual space (see point 2 in FIG. 6 and point 12 in FIG. 7)

X axis: Xcam, Y axis: Ycam, Z axis: Zcam

(C) The value (position) converted to 3D from the mouse position (a) (see point 11 in Fig. 7)

X axis: Xm3, Y axis: Ym3, Z axis: Zm3

(D) Reference (center) position of the virtual space (see point 3 in Fig. 6 and point 13 in Fig. 7)

X axis position = Xcen, Y axis coordinate = Ycen, Z axis coordinate = Zcen

(E) Size and correction ratio of the navigator map

Wm: Width value, Hm: Height value, R: Correction factor when converting from 2D to 3D

(F) Obtaining the camera position in the virtual space Formula (Finding the position of point 11 in FIG. 7)

X axis coordinate: (Xm - (Wm / 2)) * R = Xm3 = Xcam

Y axis coordinate: (Ym - (Hm / 2)) * R = Ym3 = Ycam

Z coordinate: (fixed constant) = Zm3 = Zcam

If the point 11 position is present in the object after the step (f), the positional correction to the point 14 can be performed because it is overlapped with the camera. This position correction can be made by moving the camera lens direction (Angle) away from the reference position of the virtual space.

(G) Camera lens Angle calculation formula

dx = Xcen - Xcam

dy = Ycen - Ycam

dz = Zcen - Zcam

Lens X Angle: Acamx = tan-1 (dz / dy)

Lens Y Angle: Acamy = tan-1 (dz / dx)

(A) Obtaining camera movement formula

Moving camera X position: camPOSx = Xm3

Moving camera Y position: camPOSy = Ym3

Moving camera Z position: camPOSz = Zm3

Moving camera Angle: camAngleX = Acamx

Moving camera Angle: camAngleY = Acamy

Through the above processes, the camera position moves from point 12 to point 14, and at the point 14, the camera lens focus is rotated so that the angle can be set so that the camera focus always looks at the reference point of the object (point 11).

According to the present embodiment, the user can easily and quickly move the camera to a desired position in a wide three-dimensional virtual space using the navigator map, and can confirm the desired object through the main map in one operation.

In the conventional case, even if the camera is moved within the virtual space, the direction of the camera lens is kept unchanged, and the user moves the camera so that the object to be searched exists on the side or back of the camera lens. There is a problem that the camera view of the map causes an invisible result. However, according to the present exemplary embodiment, the focus movement is performed such that the direction of the camera lens is directed to the object (3D model) selected by the user along with the movement of the camera, so that user view visualization with improved convenience can be performed. In this case, even if the user moves to any position through the navigator map, since the camera lens always looks at the object, the user can easily operate the camera lens and the convenience of BIM design and monitoring can be improved.

Referring to FIG. 3, there is shown a scenario in which a camera position and direction view are manipulated using a user, a navigator map, a client engine, a server engine, and a main map. The user performs a user input in a navigator map by a mouse click, a touch input, or the like (S400).

The user input is confirmed through the navigator map 520 and the user input position coordinate is checked (S405). ismouse_event () is a function that checks whether user input such as a mouse click is present, and is an id for identifying an event and a pixel information about a user input position coordinate.

(Id, size, posX, ...) from the server engine 100 when the specific object is selected, through the navigator map 520. (S410-S415 ). If a specific object is not selected, it may request base point information on the project space instead of the object coordinate information. The server engine 100 can receive a request, retrieve a database, and extract and respond to object coordinate information (pos_object_res (id, size, posX, ...), S420 to S425). Here, the object coordinate information may be a reference point coordinate of the object.

When the client engine 200 receives a response from the server engine 100, the client engine 200 calculates the camera position and the camera view direction based on the response. It is determined whether or not an object exists in the camera view, and if not, the camera view direction is switched. When an object exists in the camera view, the camera is rendered (S430). The calculation of the camera position and the view direction, and the switching of the view direction have been described in detail in the foregoing. (Camera_no, posX, ...), rendercam_view_vector (cam_no, posX, ...), S435 to S440) can be displayed by the user through the main map 510.

Although the navigator map 520 and the main map 510 are shown separately implemented as the client engine 200 in the drawing, the navigator map processing module 220 and the main map processing module 210 are installed in the client engine 200 And S410 may be processes performed in the client engine 200. [

Another method of switching the camera view direction in this embodiment is to use the Z coordinate of the pixel position that is clicked according to the user input and the Z coordinate of the extracted reference point (the reference point of the object space or the project space) , The camera is moved to that position, the vector of the moved camera is designated, and the vector direction can be input as a median value of the project space. In this way, even if the user moves the camera by clicking on a certain position of the navigator map, the direction of the camera lens looks at the center of the project space, so that no object can be seen in the main map.

In this embodiment, the position (the pixel coordinates Point (X, Y) of the monitor) clicked by the user in the navigator map is the object that the user wants to view.

In the case of other existing programs, the camera is moved to that position. In this case, the problem may be that the camera position is too close to the object or the user can not see or observe the object, so it is necessary to move back and forth and backward by using the direction key in the main map again, In the embodiment, the camera can be moved backward at a predetermined distance (settable) so that the camera can see the position clicked by the user, thereby securing the viewing distance. You can also manipulate the camera lens to look at the object's reference point by clicking on it.

However, if the user clicks the blank space without clicking the object, it may not be able to recognize the position of the object. In this case, it is determined that the user has clicked the camera position in consideration of the viewing distance, And manipulate the direction of the camera lens to the entire project space center point (the reference point of the predefined space (the place where the cube type zone is set) before the user models).

Also, in this embodiment, when the navigator map is clicked, it is determined whether there is an object at the clicked position. Since the monitor image is 2D (X, Y), the X-ray is shot in the vertical direction (perpendicular to the XY plane) to confirm the collision within a certain distance (within the predefined space). If a collision is detected, the user can determine that the object has been captured.

When the user takes an empty space, the object is not detected. Therefore, the user does not want to view the object but decides to move the camera position. In this case, the user looks at the center point of the space defined in advance.

In addition, when the user wants to see the desired object, it is assumed that the object is taken. When the empty space is taken, the camera is moved to the position and the camera is operated by the direction key again. Can be manipulated to look at the center point of the project space.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

100: Server Engine 110: 3D Information Management Database
120: connection management processing module 130: communication management processing module
200: client engine 210: main map processing module
220: navigator map processing module 230: user input
240: Display unit 300: 3D model authoring tool
310: 3D model management unit 320:

Claims (13)

CLAIMS 1. A method of visualizing a user view in a client including a display portion in which a main map and a navigator map for a project space are displayed,
(a) receiving user input on the navigator map;
(b) extracting two-dimensional coordinates corresponding to the user input;
(c) deducing camera three-dimensional coordinates from the two-dimensional coordinates;
(d) extracting and storing the position and the view direction of the camera after moving the camera in the three-dimensional coordinates;
(e) determining whether an object corresponding to the user input exists in the view direction; And
(f) displaying a screen according to a view of the camera in the main map when the object exists, and switching the view direction so that the object is located within the view direction when the object does not exist, Displaying a screen according to a view of the camera on a main map,
The step (f)
If the object does not exist in the view direction, the reference point of the object is scanned while the view of the camera is rotated by 360 degrees. If the reference point of the object is scanned, the scan is stopped, And passing it to the camera handle module in a direction vector.
The method according to claim 1,
If any object corresponding to the user input is selected,
The step (c)
Assigning a reference point coordinate of the selected object as a direction vector;
Calculating temporary three-dimensional coordinates by combining the Z coordinates of the reference point coordinates and the X, Y coordinates of the two-dimensional coordinates;
And calculating and extracting coordinates of the camera moved in a predetermined distance in the direction opposite to the direction vector in the temporary three-dimensional coordinates as the three-dimensional coordinates of the camera.
3. The method of claim 2,
Wherein the reference point coordinates of the object are provided to the server engine managing the 3D information management database by being requested.
The method according to claim 1,
If an empty space is selected without any object corresponding to the user input,
Wherein the step (c) includes calculating temporal three-dimensional coordinates by combining the Z coordinate estimated using an average value of the project space and the X and Y coordinates of the two-dimensional coordinate.
The method according to claim 1,
If an empty space is selected without any object corresponding to the user input,
Wherein the step (c) includes calculating temporal three-dimensional coordinates by combining the estimated Z coordinate using the reference point coordinates of the project space and the X and Y coordinates of the two-dimensional coordinate.
The method according to claim 4 or 5,
Wherein the step (f) switches the view direction of the camera toward the reference point of the project space.
The method according to claim 1,
Between the steps (d) and (e)
Determining whether the camera overlaps with another object in the project space at the position, and changing the position of the camera within a predetermined correction range when overlapping occurs.
delete The method according to claim 1,
The presence or absence of an object corresponding to the user input is determined by determining whether or not a collision occurs within a predetermined distance by shooting an X-ray perpendicularly to the XY plane and determining that the detected object is selected by the user input A method of visualizing a user view.
The method according to claim 1,
Wherein the project space is a BIM (Building Information Modeling) -based 3D virtual space related to a project in which one or more clients can be designed and monitored.
A client engine system for design and monitoring of a three-dimensional project space,
A display unit for displaying the main map and the navigator map together;
A user input for receiving user input for any location on the navigator map;
Dimensional coordinates of a position corresponding to the user input, requesting the server engine for object information about the object corresponding to the position and receiving the transmitted information, and receiving three-dimensional coordinates of the camera based on the two- A navigator map processing module for inferring the navigation map; And
A main map processing module for moving the camera corresponding to the three-dimensional coordinates, switching the view direction of the camera toward the object, and controlling the camera to display the view of the camera on the main map However,
The navigator map processing module calculates the three-dimensional coordinates of the camera by combining the Z coordinate corresponding to the average value or the reference point of the project space and the X and Y coordinates of the two-dimensional coordinate when the object corresponding to the position does not exist And extracting the client engine system.
12. The method of claim 11,
The navigator map processing module calculates temporary three-dimensional coordinates by combining the Z coordinate corresponding to the reference point information of the object and the X, Y coordinates of the two-dimensional coordinate when the object corresponding to the position exists, Dimensional coordinates of the camera by a predetermined distance in a direction opposite to a direction vector corresponding to the reference point information in the 3D coordinates.
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