CN113987650A

CN113987650A - Beam model generation method and device and computer equipment

Info

Publication number: CN113987650A
Application number: CN202111275757.8A
Authority: CN
Inventors: 尤勇敏; 其他发明人请求不公开姓名
Original assignee: Jiuling Jiangsu Digital Intelligent Technology Co Ltd
Current assignee: Jiuling Jiangsu Digital Intelligent Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-01-28

Abstract

The application relates to a method and a device for generating a beam model and computer equipment. The method comprises the following steps: extracting a beam primitive from a two-dimensional drawing of a target building; analyzing and processing the beam graphics primitives to obtain beam information; the beam information comprises position information and size information of a plurality of beam side lines; and generating a beam model of the target building according to the beam information. By adopting the method, the time cost and the labor cost can be saved in the turnover work.

Description

Beam model generation method and device and computer equipment

Technical Field

The application relates to the technical field of computer-aided building design, in particular to a method and a device for generating a beam model and computer equipment.

Background

In the construction industry, two-dimensional drawings of buildings are usually drawn using CAD (Computer Aided Design).

In the related art, when a three-dimensional model is built according to a two-dimensional drawing, a designer mainly performs manual rollover. This work is not only high and loaded down with trivial details repeatability, and manual placing is very easy to appear the error moreover, and time cost, human cost are all very high.

Disclosure of Invention

In view of the above, it is necessary to provide a method, an apparatus and a computer device for generating a beam model, which can save time cost and labor cost in the rollover work.

A method of generating a beam model, the method comprising:

extracting a beam primitive from a two-dimensional drawing of a target building;

analyzing and processing the beam graphics primitives to obtain beam information; the beam information comprises position information and size information of a plurality of beam side lines;

and generating a beam model of the target building according to the beam information.

In one embodiment, the analyzing and processing the beam primitive to obtain the beam information includes:

analyzing and processing the beam graphics primitives to obtain position information of a plurality of beam side lines, and determining a plurality of first line segment sets according to the position information of the plurality of beam side lines; each first line set comprises beam side lines with the same extension direction;

for each first line segment set, dividing the first line segment set into a plurality of collinear sets; each collinear set comprises at least one beam side line positioned on the same straight line;

for any collinear set, finding out another collinear set adjacent to the collinear set, orthographically projecting the beam edge line in the two collinear sets to a target plane, and obtaining the size information of the beam edge line according to the projection result; the distance between the beam side lines of the two collinear sets is smaller than a preset distance threshold;

and obtaining beam information according to the position information and the size information of the plurality of beam side lines.

In one embodiment, the analyzing the beam primitive to obtain the position information of the beam edges, and determining the first line sets according to the position information of the beam edges includes:

analyzing and processing the beam graphics primitives to obtain a plurality of beam blocks, and determining first position information of a plurality of beam edges in the plurality of beam blocks;

determining second position information of beam boundary lines outside the plurality of beam blocks;

a plurality of first line segment sets are determined according to the first position information and the second position information.

In one embodiment, the orthographically projecting the beam edge lines in the two collinear sets to the target plane and obtaining the size information of the beam edge lines according to the projection result includes:

determining beam lines outside the beam blocks in the first line segment set as a second line segment set;

selecting a first beam side line and a second beam side line from the second line segment set; the first beam edge line and the second beam edge line respectively belong to two adjacent collinear sets;

orthographic projection is carried out on the first beam side line and the second beam side line to a target plane, and a first projection corresponding to the first beam side line and a second projection corresponding to the second beam side line are obtained;

and if the first projection completely covers the second projection and the first beam side line is longer than the second beam side line, the second beam side line is prolonged to be as long as the first beam side line to obtain beam side line length information.

In one embodiment, after obtaining the first projection corresponding to the first beam edge and the second projection corresponding to the second beam edge, the method further includes:

if the first projection part covers the second projection, searching an X-th beam side line from a collinear set where a shorter one of the first beam side line and the second beam side line is located; the longer one of the first beam side line and the second beam side line is a comparison base line, and an overlapping part is formed between orthographic projections of the X-th beam side line and the comparison base line on the target plane;

in the extending direction of the X-th beam side line, determining the starting point of the first X-th beam side line as the starting point of the extending beam side line, and determining the end point of the last X-th beam side line as the end point of the extending beam side line;

drawing the extension beam side line into the collinear set where the X-th beam side line is located;

and obtaining the length information of the beam side line according to the extension beam side line.

In one embodiment, the extracting the beam primitive from the two-dimensional drawing of the target building includes:

selecting a target layer corresponding to a preset beam mark in a two-dimensional drawing of a target building;

and determining the primitives in the target layer as beam primitives.

A method of generating a beam model, the method comprising:

obtaining beam information according to the position information and the size information of the plurality of beam side lines;

acquiring a target floor corresponding to the beam information;

and generating a beam model of the target building according to the target floor and the beam information.

An apparatus for generating a beam model, the apparatus comprising:

the primitive extraction module is used for extracting beam primitives from a two-dimensional drawing of a target building;

the beam primitive analysis module is used for analyzing and processing the beam primitives to obtain beam information; the beam information comprises position information and size information of a plurality of beam side lines;

and the model generation module is used for generating a beam model of the target building according to the beam information.

In one embodiment, the beam primitive analysis module includes:

the line segment set determining submodule is used for analyzing and processing the beam graphics primitives to obtain position information of a plurality of beam edge lines and determining a plurality of first line segment sets according to the position information of the beam edge lines; each first line set comprises beam side lines with the same extension direction;

the collinear set determining submodule is used for dividing each first line segment set into a plurality of collinear sets; each collinear set comprises at least one beam side line positioned on the same straight line;

the projection sub-module is used for searching out another collinear set adjacent to the collinear set for any collinear set, orthographically projecting the beam edge in the two collinear sets to a target plane, and obtaining the size information of the beam edge according to the projection result; the distance between the beam side lines of the two collinear sets is smaller than a preset distance threshold;

and the beam information determining submodule is used for obtaining beam information according to the position information and the size information of the plurality of beam side lines.

In one embodiment, the line segment set determining submodule is specifically configured to analyze and process a beam primitive to obtain a plurality of beam blocks, and determine first position information of a plurality of beam edges in the plurality of beam blocks; determining second position information of beam boundary lines outside the plurality of beam blocks; a plurality of first line segment sets are determined according to the first position information and the second position information.

In one embodiment, the projection submodule is specifically configured to determine beam lines outside the beam blocks in the first line segment set as a second line segment set; selecting a first beam side line and a second beam side line from the second line segment set; the first beam edge line and the second beam edge line respectively belong to two adjacent collinear sets; orthographic projection is carried out on the first beam side line and the second beam side line to a target plane, and a first projection corresponding to the first beam side line and a second projection corresponding to the second beam side line are obtained; and if the first projection completely covers the second projection and the first beam side line is longer than the second beam side line, the second beam side line is prolonged to be as long as the first beam side line to obtain beam side line length information.

In one embodiment, the projection submodule is further configured to search an X-th beam edge line from a collinear set where a shorter one of the first beam edge line and the second beam edge line is located if the first projection portion covers the second projection; the longer one of the first beam side line and the second beam side line is a comparison base line, and an overlapping part is formed between orthographic projections of the X-th beam side line and the comparison base line on the target plane; in the extending direction of the X-th beam side line, determining the starting point of the first X-th beam side line as the starting point of the extending beam side line, and determining the end point of the last X-th beam side line as the end point of the extending beam side line; drawing the extension beam side line into the collinear set where the X-th beam side line is located; and obtaining the length information of the beam side line according to the extension beam side line.

In one embodiment, the primitive extraction module is specifically configured to select a target layer corresponding to a preset beam mark in a two-dimensional drawing of a target building; and determining the primitives in the target layer as beam primitives.

An apparatus for generating a beam model, the apparatus comprising:

the line segment set determining module is used for analyzing and processing the beam graphics primitives to obtain position information of a plurality of beam side lines and determining a plurality of first line segment sets according to the position information of the plurality of beam side lines; each first line set comprises beam side lines with the same extension direction;

a collinear set determining module, configured to divide the first line segment set into a plurality of collinear sets for each first line segment set; each collinear set comprises at least one beam side line positioned on the same straight line;

the projection module is used for searching out another collinear set adjacent to the collinear set for any collinear set, orthographically projecting the beam edge in the two collinear sets to a target plane, and obtaining the size information of the beam edge according to the projection result; the distance between the beam side lines of the two collinear sets is smaller than a preset distance threshold;

the beam information determining module is used for obtaining beam information according to the position information and the size information of the plurality of beam side lines;

the floor acquisition module is used for acquiring a target floor corresponding to the beam information;

and the model generation module is used for generating a beam model of the target building according to the target floor and the beam information.

A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:

According to the beam model generation method, the beam model generation device and the computer equipment, a beam primitive is extracted from a two-dimensional drawing of a target building; analyzing and processing the beam graphics primitives to obtain beam information; and generating a beam model of the target building according to the beam information. Through this disclosed embodiment, the beam model of target building can be generated according to the two-dimensional drawing of target building to computer equipment, compares with the manual mould that turns over among the prior art, can reduce designer's work, avoids manual placing to appear the error to time cost and human cost have been saved.

Drawings

FIG. 1 is a diagram of an application environment of a method for generating a beam model according to an embodiment;

FIG. 2 is a schematic flow chart diagram of a method for generating a beam model in one embodiment;

FIG. 3a is a diagram illustrating an interface for extracting primitives, according to an embodiment;

FIG. 3b is a schematic illustration of a beam in a two-dimensional drawing of an embodiment;

FIG. 3c is a schematic view of a beam in a three-dimensional model in one embodiment;

FIG. 4 is a schematic flow chart diagram illustrating the steps of analyzing and processing a beam primitive in one embodiment;

FIG. 5a is a schematic view of a beam block in one embodiment;

FIG. 5b is a schematic illustration of a first set of segments, a collinear set, in one embodiment;

FIG. 5c is a schematic view of an exemplary elongated beam edge;

FIG. 5d is one of the schematic diagrams of connecting wires in one embodiment;

FIG. 5e is a second schematic diagram of the connecting lines in one embodiment;

FIG. 5f is a schematic illustration of a projection in one embodiment;

FIG. 6 is a schematic flow chart diagram illustrating a method for generating a beam model according to another embodiment;

FIG. 7 is a block diagram showing a structure of a beam model generating apparatus according to an embodiment;

fig. 8 is a block diagram showing a structure of a beam model generating apparatus according to another embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The beam model generation method provided by the application can be applied to the computer equipment shown in FIG. 1. The computer device comprises a processor, a memory, a network interface, a database, a display screen and an input device which are connected through a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing various entity models and related information of the entity models in the following embodiments, and specific descriptions about the various entity models and related information of the entity models are provided in the following embodiments. The network interface of the computer device may be used to communicate with other devices outside over a network connection. Optionally, the computer device may be a server, a desktop, a personal digital assistant, other terminal devices such as a tablet computer, a mobile phone, and the like, or a cloud or a remote server, and the specific form of the computer device is not limited in the embodiment of the present application. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like. Of course, the input device and the display screen may not belong to a part of the computer device, and may be external devices of the computer device.

Those skilled in the art will appreciate that the architecture shown in fig. 1 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

It should be noted that the execution subject of the method embodiments described below may be a beam model generation apparatus, and the apparatus may be implemented as part or all of the computer device described above by software, hardware, or a combination of software and hardware. The following method embodiments are described by taking the execution subject as the computer device as an example.

In one embodiment, as shown in fig. 2, a method for generating a beam model is provided, which is described by taking the method as an example for being applied to the computer device in fig. 1, and includes the following steps:

step 101, extracting a beam primitive from a two-dimensional drawing of a target building.

The two-dimensional drawing of the target building can be drawn by adopting CAD and is stored in a preset format. Optionally, the preset format is DWG, which is not limited in this disclosure.

The method comprises the steps that computer equipment obtains a two-dimensional drawing of a target building in advance, and then the two-dimensional drawing with a preset format is analyzed by utilizing ODA (open Design alliance) to obtain related data of the target building; and then, extracting the beam primitives from the related data of the target building.

The ODA described above is a non-profit group with 1100 members in more than 40 countries. ODA is directed to facilitating format exchange of open, industry-standard CAD data and legacy CAD data. ODA develops a core platform Teigha for technical graphic applications, which supports data exchange between dwg, dgn, stl, pdf. Multiple platforms supported by Teigha: windows, Mac, Unix, Linux, etc. ODA members can develop their own applications using C + +, NET, and ActiveX interfaces. The ODA is aimed at developing a core graphic technology library, and a software developer concentrates on application development. As well as ITC, are member-oriented.

The process of extracting the beam primitive from the data related to the target building may include: selecting a target layer corresponding to a preset beam mark in a two-dimensional drawing of a target building; and determining the primitives in the target layer as beam primitives. As shown in fig. 3a, if the computer device automatically clicks "BEAM", the target layer where the BEAM primitive is located is displayed in the interface.

102, analyzing and processing the beam graphics primitives to obtain beam information; the beam information includes position information and size information of a plurality of beam edge lines.

After the beam primitives are extracted, the beam primitives are analyzed, analyzed and processed by computer equipment, and the position information of each beam side line can be obtained; further, size information such as the length and the width of each beam side line can be calculated according to the position information of the beam side lines; and finally, the computer equipment collects the position information and the size information of the plurality of beam side lines to obtain beam information.

In one embodiment, the computer device may further determine a beam center line and the like according to the beam edge line, which is not limited in the embodiments of the present disclosure.

And 103, generating a beam model of the target building according to the beam information.

After the beam information is obtained, the computer equipment calls Revit, and the Revit obtains a target floor corresponding to the beam information; and generating a beam model of the target building according to the target floor and the beam information. Wherein, the beam in the two-dimensional drawing is shown in fig. 3b, and the three-dimensional beam model is shown in fig. 3 c.

For example, Revit determines the shape and size of the beam from the beam information and generates a beam entity in the target floor. The embodiment of the disclosure does not limit how the Revit generates the entity, and can be set according to actual conditions.

The target floor can be set by a user or a default setting, and after the computer equipment acquires the target floor, the information such as column height, wall height and the like can be determined according to the target floor, and whether the beam entity is reasonably verified.

The above Revit is the name of a series of software available from Autodesk. The Revit series software is constructed for a Building Information Model (BIM) and can help architects to design, build and maintain buildings with better quality and higher energy efficiency.

In the method for generating the beam model, a beam primitive is extracted from a two-dimensional drawing of a target building; analyzing and processing the beam graphics primitives to obtain beam information; and generating a beam model of the target building according to the beam information. Through this disclosed embodiment, the beam model of target building can be generated according to the two-dimensional drawing of target building to computer equipment, compares with the manual mould that turns over among the prior art, can reduce designer's work, avoids manual placing to appear the error to time cost and human cost have been saved.

In one embodiment, the method relates to an implementation process for analyzing and processing beam primitives to obtain beam information. On the basis of the above embodiment, as shown in fig. 4, an embodiment of the present disclosure may include the following steps:

step 201, analyzing and processing the beam primitive to obtain position information of a plurality of beam edge lines, and determining a plurality of first line segment sets according to the position information of the plurality of beam edge lines, wherein each first line segment set comprises beam edge lines with consistent extension directions.

The method comprises the steps that computer equipment analyzes and processes beam primitives to obtain a plurality of beam blocks (blocks), and first position information of a plurality of beam edges in the plurality of beam blocks is determined as shown in fig. 5 a; determining second position information of beam boundary lines outside the plurality of beam blocks; a plurality of first line segment sets are determined according to the first position information and the second position information.

As shown in fig. 5b, the beam primitives are analyzed and processed to obtain position information of beam edges a, b, c, d, e, f, g, h, i, j, k, and l. The beam edge lines extend in the same direction to form a first line set S. By analogy, other first line segment sets can be obtained.

Step 202, for each first line segment set, dividing the first line segment set into a plurality of collinear sets; each collinear set includes at least one collinear beam edge.

As shown in fig. 5b, for the first line segment set S, there are 2 beam edge lines on the same straight line with the beam edge line a, forming a collinear set a; 1 beam edge line is positioned on the same straight line with the beam edge line B to form a collinear set B; 3 beam edge lines which are positioned on the same straight line with the beam edge line C form a collinear set C; 3 beam edge lines which are positioned on the same straight line with the beam edge line e form a collinear set D; 3 beam side lines which are positioned on the same straight line with the beam side line g form a collinear set E; and 3 beam edge lines which are positioned on the same straight line with the beam edge line j form a collinear set E.

Step 203, for any collinear set, finding out another collinear set adjacent to the collinear set, orthographically projecting the beam edge in the two collinear sets to a target plane, and obtaining size information of the beam edge according to a projection result; and the distance between the beam side lines of the two collinear sets is smaller than a preset distance threshold.

As shown in fig. 5B, for the collinear set a, if the beam edge line distance between the collinear set B and the collinear set a is found to be smaller than the preset distance threshold, it is determined that the collinear set B is a collinear set adjacent to the collinear set a. In practical application, the preset distance threshold value can be set according to the beam width, and the preset distance threshold value is not limited in the embodiment of the disclosure.

And after finding out a collinear set B adjacent to the collinear set A, projecting the beam edge line in the collinear set A and the beam edge line in the collinear set B to a target plane in an orthographic mode, and obtaining size information of the beam edge line according to a projection result. Wherein the target plane may be the ground.

In one embodiment, the process of orthographically projecting the beam edge lines in the two collinear sets to the target plane and obtaining the size information of the beam edge lines according to the projection result may include: determining beam lines outside the beam blocks in the first line segment set as a second line segment set; selecting a first beam side line and a second beam side line from the second line segment set; the first beam edge line and the second beam edge line respectively belong to two adjacent collinear sets; orthographic projection is carried out on the first beam side line and the second beam side line to a target plane, and a first projection corresponding to the first beam side line and a second projection corresponding to the second beam side line are obtained; and if the first projection completely covers the second projection and the first beam side line is longer than the second beam side line, the second beam side line is prolonged to be as long as the first beam side line to obtain beam side line length information.

As shown in fig. 5b, a beam side line a and a beam side line b are selected from the second line segment set, and the beam side line a and the beam side line b are projected to the ground to obtain a first projection corresponding to the beam side line a and a second projection corresponding to the beam side line b. Since the first projection in fig. 5b completely covers the second projection, and the first beam edge a is longer than the second beam edge b, that is, the first projection is a superset of the second projection, the beam edge b is extended to be as long as the beam edge a, and the lengths of the two beam edges of one beam are obtained, as shown in fig. 5 c.

Then, the beam edge line a is removed from the collinear set a, the beam edge line B is removed from the collinear set B, and the beam edge lines a and B are removed from the first line set S. And then the rest beam side lines in the collinear set are subjected to projection comparison according to the mode.

In one embodiment, after obtaining the first projection corresponding to the first beam edge line and the second projection corresponding to the second beam edge line, the method may further include: and if the first projection is completely overlapped with the second projection, determining the length information of the beam side line according to the first beam side line and the second beam side line.

In one embodiment, after obtaining the first projection corresponding to the first beam edge line and the second projection corresponding to the second beam edge line, the method may further include: if the first projection part covers the second projection, searching an X-th beam side line from a collinear set where a shorter one of the first beam side line and the second beam side line is located; the longer one of the first beam side line and the second beam side line is a comparison base line, and an overlapping part is formed between orthographic projections of the X-th beam side line and the comparison base line on the target plane; in the extending direction of the X-th beam side line, determining the starting point of the first X-th beam side line as the starting point of the extending beam side line, and determining the end point of the last X-th beam side line as the end point of the extending beam side line; drawing the extension beam side line into the collinear set where the X-th beam side line is located; and obtaining the length information of the beam side line according to the extension beam side line.

As shown in fig. 5b, a beam side line g and a beam side line k are selected from the second line segment set, and the beam side line g and the beam side line k are projected to the ground to obtain a first projection corresponding to the beam side line g and a second projection corresponding to the beam side line k. Since the first projection partially covers the second projection (the first projection is a subset of the second projection in fig. 5 c), the xth beam edge lines h and i are found from the collinear set E where the shorter beam edge line g is located. In the process, the longer beam edge line k is a comparison base line, and the X-th beam edge lines h and i and the beam edge line k have overlapped parts on the orthographic projection of the ground. In the extending direction of the beam side lines h and i, the starting point of the beam side line g is determined as the starting point of the extended beam side line m, the end point of the beam side line i is determined as the end point of the extended beam side line m, and as shown in fig. 5d, the extended beam side line m is drawn into the collinear set E where the beam side lines h and i are located.

Then, the beam side line k is shorter than the extension beam side line m, the extension beam side line m is used as a comparison baseline, the beam side line l is found out according to the above manner, and the extension beam side line n is determined, as shown in fig. 5 e. And finally, obtaining the length information of one beam according to the boundary lines m and n of the delay beams.

The computer device then removes the beam edges g, h, and i from the collinear set E, the beam edges k and l from the collinear set F, and the beam edges g, h, i, k, and l from the first set of segments S. And then the rest beam side lines in the collinear set are subjected to projection comparison according to the mode.

It will be appreciated that orthographic projection of the beam edges in the two collinear sets onto the target plane results in projection results including, but not limited to, partial coincidence, complete coincidence, superset and subset as shown in fig. 5 f.

After the size information of the plurality of beam boundary lines is determined according to one first line set, the size information of the plurality of beam boundary lines in each first line set can be obtained by analyzing other first line sets according to the method.

And step 204, obtaining beam information according to the position information and the size information of the plurality of beam side lines.

And the computer equipment collects the position information and the size information of the plurality of beam side lines to obtain beam information.

In the above embodiment, the beam primitive is analyzed and processed to obtain the position information of the plurality of beam edges, and a plurality of first line segment sets are determined according to the position information of the plurality of beam edges; for each first line segment set, dividing the first line segment set into a plurality of collinear sets; for any collinear set, finding out another collinear set adjacent to the collinear set, orthographically projecting the beam edge line in the two collinear sets to a target plane, and obtaining the size information of the beam edge line according to the projection result; and obtaining beam information according to the position information and the size information of the plurality of beam side lines. Through the embodiment of the disclosure, the computer equipment can automatically analyze the beam information according to the beam primitive, so that a basis is provided for the subsequent automatic generation of the beam entity, and the time cost and the labor cost are saved.

In one embodiment, as shown in fig. 6, a method for generating a beam model is provided, which is described by taking the method as an example applied to the computer in fig. 1, and includes the following steps:

step 301, extracting a beam primitive from a two-dimensional drawing of a target building.

In one embodiment, a target layer corresponding to a preset beam mark in a two-dimensional drawing of a target building is selected; and determining the primitives in the target layer as beam primitives.

Step 302, analyzing and processing the beam primitive to obtain position information of a plurality of beam edge lines, and determining a plurality of first line segment sets according to the position information of the plurality of beam edge lines.

And each first line set comprises beam side lines with the same extension direction.

In one embodiment, a beam primitive is analyzed and processed to obtain a plurality of beam blocks, and first position information of a plurality of beam edges in the plurality of beam blocks is determined; determining second position information of beam boundary lines outside the plurality of beam blocks; a plurality of first line segment sets are determined according to the first position information and the second position information.

Step 303, for each first line segment set, dividing the first line segment set into a plurality of collinear sets.

Each collinear set comprises at least one beam side line positioned on the same straight line;

and 304, for any collinear set, finding out another collinear set adjacent to the collinear set, orthographically projecting the beam edge in the two collinear sets to the target plane, and obtaining the size information of the beam edge according to the projection result.

And the distance between the beam side lines of the two collinear sets is smaller than a preset distance threshold.

In one embodiment, the beam lines outside the beam blocks in the first line segment set are determined as a second line segment set; selecting a first beam side line and a second beam side line from the second line segment set; the first beam edge line and the second beam edge line respectively belong to two adjacent collinear sets; orthographic projection is carried out on the first beam side line and the second beam side line to a target plane, and a first projection corresponding to the first beam side line and a second projection corresponding to the second beam side line are obtained; and if the first projection completely covers the second projection and the first beam side line is longer than the second beam side line, the second beam side line is prolonged to be as long as the first beam side line to obtain beam side line length information.

In one embodiment, if the first projection part covers the second projection, searching an X-th beam edge line from a collinear set where a shorter one of the first beam edge line and the second beam edge line is located; the longer one of the first beam side line and the second beam side line is a comparison base line, and an overlapping part is formed between orthographic projections of the X-th beam side line and the comparison base line on the target plane; in the extending direction of the X-th beam side line, determining the starting point of the first X-th beam side line as the starting point of the extending beam side line, and determining the end point of the last X-th beam side line as the end point of the extending beam side line; drawing the extension beam side line into the collinear set where the X-th beam side line is located; and determining the length information of the beam side line according to the extension beam side line.

And 305, obtaining beam information according to the position information and the size information of the plurality of beam side lines.

And step 306, acquiring a target floor corresponding to the beam information.

And 307, generating a beam model of the target building according to the target floor and the beam information.

In the above embodiment, the computer device extracts the beam primitive from the two-dimensional drawing of the target building, then performs analysis processing on the beam primitive to obtain beam information, and finally generates the beam model of the target building according to the beam information. In the process, the computer automatically extracts, analyzes and generates the beam model, and compared with the manual turnover in the prior art, the time cost and the labor cost are saved.

It should be understood that although the steps in the flowcharts of fig. 2 to 6 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps of fig. 2-6 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.

In one embodiment, as shown in fig. 7, there is provided a beam model generation apparatus including:

the primitive extraction module 401 is configured to extract a beam primitive from a two-dimensional drawing of a target building;

a beam primitive analysis module 402, configured to analyze and process the beam primitive to obtain beam information; the beam information comprises position information and size information of a plurality of beam side lines;

and a model generating module 403, configured to generate a beam model of the target building according to the beam information.

In one embodiment, the beam primitive analysis module 402 includes:

In one embodiment, the projection submodule is further configured to search an X-th beam edge line from a collinear set where a shorter one of the first beam edge line and the second beam edge line is located if the first projection portion covers the second projection; the longer one of the first beam side line and the second beam side line is a comparison base line, and an overlapping part is formed between orthographic projections of the X-th beam side line and the comparison base line on the target plane; in the extending direction of the X-th beam side line, determining the starting point of the first X-th beam side line as the starting point of the extending beam side line, and determining the end point of the last X-th beam side line as the end point of the extending beam side line; drawing the extension beam side line into the collinear set where the X-th beam side line is located; and determining the length information of the beam side line according to the extension beam side line.

In one embodiment, the primitive extraction module 401 is specifically configured to select a target layer corresponding to a preset beam mark in a two-dimensional drawing of a target building; and determining the primitives in the target layer as beam primitives.

In one embodiment, as shown in fig. 8, there is provided a beam model generation apparatus including:

the primitive extraction module 501 is used for extracting beam primitives from a two-dimensional drawing of a target building;

the line segment set determining module 502 is configured to analyze and process the beam primitive to obtain position information of a plurality of beam edge lines, and determine a plurality of first line segment sets according to the position information of the plurality of beam edge lines; each first line set comprises beam side lines with the same extension direction;

a collinear set determining module 503, configured to, for each first line segment set, divide the first line segment set into a plurality of collinear sets; each collinear set comprises at least one beam side line positioned on the same straight line;

the projection module 504 is configured to find, for any collinear set, another collinear set adjacent to the collinear set, orthographically project a beam edge of the two collinear sets to the target plane, and obtain size information of the beam edge according to a projection result; the distance between the beam side lines of the two collinear sets is smaller than a preset distance threshold;

a beam information determining module 505, configured to obtain beam information according to position information and size information of a plurality of beam boundary lines;

a floor acquisition module 506, configured to acquire a target floor corresponding to the beam information;

and the model generating module 507 is used for generating a beam model of the target building according to the target floor and the beam information.

For specific definition of the beam model generation device, reference may be made to the above definition of the beam model generation method, which is not described herein again. The modules in the beam model generating device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:

In one embodiment, the processor, when executing the computer program, performs the steps of:

and determining the length information of the beam side line according to the extension beam side line.

and determining the primitives in the target layer as beam primitives.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:

In one embodiment, the computer program when executed by the processor implements the steps of:

and determining the primitives in the target layer as beam primitives.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method of generating a beam model, the method comprising:

2. The method of claim 1, wherein analyzing the beam primitive to obtain the beam information comprises:

analyzing and processing the beam graphics primitive to obtain position information of a plurality of beam side lines, and determining a plurality of first line segment sets according to the position information of the plurality of beam side lines; each first line set comprises the beam side lines with the same extending direction;

for each of the first sets of segments, dividing the first set of segments into a plurality of collinear sets; each collinear set comprises at least one beam edge line positioned on the same straight line;

for any collinear set, finding out another collinear set adjacent to the collinear set, orthographically projecting the beam side line in the two collinear sets to a target plane, and obtaining size information of the beam side line according to a projection result; the distance between the beam edge lines of the two collinear sets is smaller than a preset distance threshold;

and obtaining the beam information according to the position information and the size information of the plurality of beam side lines.

3. The method of claim 2, wherein analyzing the beam primitive to obtain position information of a plurality of beam edges, and determining a plurality of first line sets according to the position information of the plurality of beam edges comprises:

analyzing and processing the beam graphics primitive to obtain a plurality of beam blocks, and determining first position information of a plurality of beam edges in the plurality of beam blocks;

determining second position information of a beam edge line outside the plurality of beam blocks;

determining the plurality of first line segment sets according to the first position information and the second position information.

4. The method of claim 3, wherein the orthographically projecting the beam edge lines in the two collinear sets to a target plane and obtaining size information of the beam edge lines according to the projection result comprises:

determining a beam line outside the beam block in the first line segment set as a second line segment set;

orthographic projection is carried out on the first beam side line and the second beam side line to the target plane, and a first projection corresponding to the first beam side line and a second projection corresponding to the second beam side line are obtained;

and if the first projection completely covers the second projection and the first beam side line is longer than the second beam side line, the second beam side line is prolonged to be as long as the first beam side line to obtain the beam side line length information.

5. The method of claim 4, wherein after said obtaining a first projection corresponding to said first beam edge and a second projection corresponding to said second beam edge, said method further comprises:

if the first projection part covers the second projection, searching an X-th beam edge line from a collinear set where a shorter one of the first beam edge line and the second beam edge line is located; wherein the longer one of the first beam side line and the second beam side line is a comparison baseline, and an overlapping part exists between orthographic projections of the X-th beam side line and the comparison baseline on the target plane;

drawing the extension beam side line into a collinear set where the X-th beam side line is located;

6. The method of claim 1, wherein extracting the beam primitives from the two-dimensional drawing of the target building comprises:

selecting a target layer corresponding to a preset beam mark in the two-dimensional drawing of the target building;

and determining the graphic elements in the target graphic layer as the beam graphic elements.

7. A method of generating a beam model, the method comprising:

analyzing and processing the beam graphics primitives to obtain position information of a plurality of beam side lines, and determining a plurality of first line segment sets according to the position information of the plurality of beam side lines; each first line set comprises the beam side lines with the same extending direction;

acquiring a target floor corresponding to the beam information;

8. An apparatus for generating a beam model, the apparatus comprising:

and the model generation module is used for generating the beam model of the target building according to the beam information.

9. An apparatus for generating a beam model, the apparatus comprising:

the line segment set determining module is used for analyzing and processing the beam graphics primitives to obtain position information of a plurality of beam side lines and determining a plurality of first line segment sets according to the position information of the plurality of beam side lines; each first line set comprises the beam side lines with the same extending direction;

a collinear set determining module configured to, for each of the first line segment sets, divide the first line segment set into a plurality of collinear sets; each collinear set comprises at least one beam edge line positioned on the same straight line;

the projection module is used for searching out another collinear set adjacent to the collinear set for any collinear set, orthographically projecting the beam edge in the two collinear sets to a target plane, and obtaining size information of the beam edge according to a projection result; the distance between the beam edge lines of the two collinear sets is smaller than a preset distance threshold;

the beam information determining module is used for obtaining the beam information according to the position information and the size information of the plurality of beam side lines;

10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.