CN104392035B - A kind of urban three-dimensional modeling method of sing on web - Google Patents
A kind of urban three-dimensional modeling method of sing on web Download PDFInfo
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Abstract
The present invention relates to the urban three-dimensional modeling method of a kind of sing on web.The present invention manages module in parametrization, selects from site for service according to city type of ground objects and imports parameter set, manages parameter set concentratedly and edit；In site for service module, DXF formatted file is uploaded onto the server with the form of project original document；In automatic modeling module, obtain the project original DXF file that user uploads onto the server, DXF form is converted into SHP form, read the style coding of SHP pel, then read other parameter informations the automatic modeling of SHP pel.Parameter management and parametric modeling are separated by the present invention, centre is connected by Web, make user need only carry out simple parameter management operations in familiar AutoCAD software platform, the parametric modeling process of complexity is then automatically performed by the automatic modeling module being positioned at service end, reduces the technical threshold of user.
Description
Technical field
The invention belongs to Computer-aided Design Technology field, relate to the urban three-dimensional modeling method of a kind of sing on web.
Background technology
Digital city represents the developing direction of urban informationization, is the important means promoting whole national information.Since entering 21 century, digital city has obtained developing faster, it has also become one of the most potential current strategic high-tech sector.In the types of applications system of digital city; D Urban model the most gradually replaces two dimension city map, becomes the fundamental geospatial information expression-form of the numerous areas such as urban planning, city management, public safety, Heritage reservation, communication navigation, travel in holiday, military and national defense, video display amusement.The structure of conventional three-dimensional city model relies primarily on business-like computer aided design software, use the mode that a large amount of man-machine interactively models, which exist for large scale City scenarios fabrication cycle length, cost is high, it is big to update difficulty, poor in timeliness, to problems such as the dependency of modeling Personnel Skill Levels are strong, it has also become one of important bottleneck of restriction numeral urban development.
To this end, emerged many rapid modeling technology for City scenarios in recent years, it is based especially on parameterized modeling technique, in large scale City scenarios models, shows powerful ability.But there is higher technical threshold in such technology, is mainly manifested in: it is driven modeling by formalization or structurized grammar rule, and therefore user must grasp specific computer language, and need to possess certain program capability；City type of ground objects is rich and varied, it is necessary to set up huge grammar rule storehouse, the complex space form in the ability approaching to reality world；With conventional two-dimensional city model data-linkage difficulty, editor's inconvenience.These problems the most seriously constrain the parametric technology application in cybercity construction field, hinder existing two dimension city map to the conversion of D Urban model.
In order to preferably service for digital city, City scenarios three-dimensional modeling must solve three big problems: how to improve the modeling efficiency of City scenarios；How to reduce the technical threshold of user；How to reduce the cost that City scenarios updates and safeguards.It is thus desirable to the software system of a kind of " separation of taking part in building " is to solve problem above.Described " separation of taking part in building " refers to that parameter management is separated with parametric modeling, and centre is connected with Web.So user only need to manage parameter in being familiar with AutoCAD software platform, and the parametric modeling process of complexity is fully encapsulated in service end, and achieves procedure and the automatization of height.So, the technical threshold of user on the one hand can be greatly reduced, on the other hand can make full use of the advantage of parametric technology.
Summary of the invention
Present invention aim at: for the problems referred to above present in existing City scenarios three-dimensional modeling process, it is provided that the urban three-dimensional modeling method of a kind of sing on web, the technical threshold of user can be reduced, improve modeling efficiency, reduce model maintenance cost.
A kind of urban three-dimensional modeling method of sing on web, system involved by the method includes: parameter management module, parameter set can be imported from site for service, parameter set is managed concentratedly and edits, the AutoCAD pel and parameter set that represent city atural object can also be associated with the form of attribute block, and as required these attribute blocks be managed and edit.Site for service module, it is provided that style library inquiry and editor, project original document are uploaded, project status and progress queries, threedimensional model file download function.Automatic modeling module, utilizes file format converter tools and CGA rule base, generates threedimensional model automatically and quickly.
Parameter management can be separated by the method with parametric modeling, reduces user's technical threshold, improves modeling efficiency, reduces modeling cost, and it comprises the following steps:
In described parametrization management module, select from site for service according to city type of ground objects and import parameter set, parameter set is managed concentratedly and edits, and the AutoCAD pel and parameter set that represent city atural object are associated with the form of attribute block, these attribute blocks can be managed and edit, after completing, save as DXF formatted file；In described site for service module, DXF formatted file is uploaded onto the server with the form of project original document, project name, generation time, process state and progress, original document download link and model file download link information can be checked；In described automatic modeling module, obtain the project original DXF file that user uploads onto the server, DXF form is converted into SHP form, and it is conducted into CityEngine platform, read the style coding of SHP pel, retrieve and assign CGA rule file, then read other parameter informations the automatic modeling of SHP pel, derive threedimensional model file afterwards to server, cleaning project document；Finally at described site for service, user is downloaded by link and obtains final city threedimensional model file.
The invention have the advantages that:
1) parameter management and parametric modeling are separated by the present invention, centre is connected by Web, make user need only carry out simple parameter management operations in familiar AutoCAD software platform, the parametric modeling process of complexity is then automatically performed by the automatic modeling module being positioned at service end, reduces the technical threshold of user.
2) present invention is cybercity construction system based on parametric technology, the high efficiency of parametric technology and motility, make this system be adapted to different scale, different accuracy and different types of City scenarios modeling requirement, improve modeling efficiency, reduce model maintenance cost.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is each functional block diagram of the cybercity construction system that the present invention provides.
Fig. 2 is the modeling method flow chart of cybercity construction system described in Fig. 1.
Fig. 3 is the flow chart of the parameter management module of the present invention.
Fig. 4 is the flow chart of the site for service module of the present invention.
Fig. 5 is the flow chart of the automatic modeling module of the present invention.
Detailed description of the invention
Referring to Fig. 1, the embodiment of the present invention provides the functional block diagram of a kind of cybercity construction system 100.Described cybercity construction system is for quickly setting up, safeguard and update digitized city threedimensional model.
Described city threedimensional model includes the nature in certain area coverage and space-artifact key element, such as building, road, plot, greening, landscape effect, pedestrian, automobile, massif and water system.
The cybercity construction system 100 of described a kind of sing on web is realized by three modules, is parameter management module 10, site for service module 20 and automatic modeling module 30 respectively.
Described parameter management module 10 is embedded in AutoCAD software platform with the form of plug-in unit.Parameter set can be imported from site for service, parameter set is managed concentratedly and edits, the AutoCAD pel and parameter set that represent city atural object are associated with the form of attribute block, and these attribute blocks can be managed and edit.
Including three below submodule: parameter organization and administration submodule, mainly in the form of a list parameter set is managed, can import, derive, preserve and separately deposit parameter set, can increase in lists, delete parameter and parameter is ranked up, it is also possible to editing parameter value；Parameter association submodule, AutoCAD pel can be associated together with the form of attribute block with the parameter set in list, it is possible to parameter set and the correlation form of multiple pels, parameter set location mode, the text importing size of parameter set in pel is set and chooses whether display parameters collection；Attribute block management submodule, can revert to common pel by the attribute block of associated errors, it is possible in dependence block, extracting parameter collection is to list, and from an attribute block, duplication property set is to another attribute block, and dynamically checks parameter set with mouse.
Described parameter set is the set of multiple different parameters, and each parameter comprises again parameter name, prompt text and three contents of parameter value.
The process that described pel associates with parameter set is: get parms the parameter set in organization and administration submodule, and each parameter is generated an attribute definition object；Determine coordinate and the display font size size of attribute definition object；Attribute definition object and pel are added current choice set simultaneously, and thus create attribute block.Now each parameter in parameter set becomes one in attribute block and depends on pel and attribute that value can be edited, thus achieves associating of parameter and pel.
Described parameter set includes with the correlation form of multiple pels: stand alone type, the most each pel is individually associated with one group of parameter set, forms multiple attribute block；Monoblock type, the most multiple pels are jointly associated with one group of parameter set, form an attribute block.
Described parameter set location mode in pel includes: self-action, i.e. with the geometric center of pel for original point position parameter set；Manual type, i.e. uses the mode of man-machine interactively manually to determine the coordinate in pel of parameter set.
Style storehouse and project library can be managed concentratedly by described site for service module 20, are the intermediate mediums of contact between parameter management module and automatic modeling module.
Including following two submodule: style library management submodule, style storehouse can be browsed and inquire about by user, create the style storehouse of oneself, it is possible to directly parameter set, to Installed System Memory, is conveniently imported to parameter management module by duplication genre parameters collection from style storehouse.Style can be created, edits, deletes and inquire about operation by manager, it is possible to increase, delete and revise style storehouse classification；Project library management submodule, user can newly-built, suspend, terminate, inquire about and restoration project, can be with queried for items state and progress, and the threedimensional model file finally handled well by the link download in project.Manager can suspend, terminates, inquire about and restoration project, renewal item state and progress, it is possible to the precedence that adjusted iterm processes.
Described style, is a kind of special style of city space key element.Each style in style storehouse, comprises style picture, style numbering, collection number of times, genre category, key word, parameter set and remark information.Described style numbering is with unique string representation indicated.
Described style, its parameter set must comprise one for the parameter identifying this style, this parameter value be this style style numbering.
Described project status, comprise pending, process in, complete, paused four types.Project library management submodule comprises all items under aforementioned four status list, each list storage and management corresponding state.
Described automatic modeling module 30 utilizes file format converter tools and CGA(Computer
Generated Architecture) rule base, generate threedimensional model automatically and quickly.
nullDescribed generation threedimensional model process: obtain the project original DXF file that need to process，According to the type of graphics primitive object in DXF file，The attribute block object of all wire is converted into the SHP formatted file of Polyline type，The attribute block object of all planars is converted into the SHP formatted file of Polygon type，Then SHP formatted file is imported CityEngine platform，The style coding of each SHP pel is obtained from the attribute field of file，CGA rule file of the same name is retrieved accordingly from CGA rule base，And it is assigned to this SHP pel，Read other parameter values of SHP pel，Substitute into CGA rule file and carry out automatic modeling，Finally the threedimensional model file generated is derived to server，Cleaning project document，Prepare for next project.
Described CGA rule file, is a kind of definition and the computer script of driven object generation process.Rule file in CGA rule base and the style one_to_one corresponding in style storehouse, and the filename of CGA rule file is consistent with the style of corresponding style coding, the rule needed for facilitating the later stage reversely to retrieve in CGA rule base.
Referring to Fig. 2, for the modeling method flow chart described in cybercity construction system 100 of the present invention, described modeling method comprises the following steps:
Step 1: on any one the pc machine that can access site for service, uses WWW browser and inputs correct reference address (such as http: // 192.168.3.212/login.aspx) and can show login interface.The username and password of system default is client.
Step 2: interface, style storehouse will be initially entered behind login service website.Can retrieve satisfactory style by search box, click on arbitrary style icon and can check the details of this style, style can be added in the style storehouse of oneself by user as required.Afterwards the parameter set of required style is imported in the parameter management module of AutoCAD, and this parameter set is associated with the form of attribute block with the AutoCAD pel representing city atural object.
The details of described style include: style picture, style numbering, collection number of times, genre category, key word, parameter set and remark information.
Step 3: constantly repeat previous step, until all pels to be modeled all are associated with relevant parameter collection.As required these attribute blocks can be modified afterwards, inquire about, replicate and recovery operation.Finally preserve into DXF formatted file.
Step 4: Sign-On services website again, enters project library interface.A newly-built project, uploads above-mentioned DXF formatted file as project original document, cuit title, project overview and remark information.Now this project just enters the pending list of project library, and waiting for server processes.User can inquire about the details of this project, state and progress.
Step 5: automatic modeling module obtains the project original DXF file of server end, DXF form is converted into SHP form, imports to CityEngine platform afterwards, line parameterization of going forward side by side models, again threedimensional model is derived to server, finally clear up project document, prepare for next project.
Described parametric modeling process: obtain the style coding of each SHP pel from the attribute field of SHP formatted file, CGA rule file of the same name is retrieved accordingly from CGA rule base, and it is assigned to this SHP pel, read other parameter values of SHP pel, substitute into CGA rule file and carry out automatic modeling.
Step 6: user's Sign-On services Website Module, enters project library interface, finds respective items purpose download link completing in list, downloads the city threedimensional model file generated.
Segment each functional module below, explain the concrete function of the present invention.
Refer to Fig. 3, for the parameter management module 10 of a kind of cybercity construction system 100 of the present invention, including following submodule flow process: 1) parameter organization and administration, can import, derive, preserve parameter set, content of parameter can be edited；2) parameter association, associates the AutoCAD pel representing city atural object with the form of attribute block with parameter set；3) attribute block management, attribute block can be modified parameter value, dynamic queries, duplication parameter set and revert to common primitive operation.
Refer to Fig. 4, site for service module 20 for a kind of cybercity construction system 100 of the present invention, including following submodule flow process: 1) project library management, user's grassroot project, upload project original document, afterwards can be with the state of queried for items and progress, band service end can download to city threedimensional model eventually through link after having processed, and manager can be with queried for items details, edit item state and progress, searching user's information and management threedimensional model file；Style library management, user can inquire about style storehouse, the details browsing style, derive the parameter set of style, manages oneself style storehouse；Manager can add new style, edit style details and managerial style storehouse type.
Described style, has unique style coding, and its naming rule can only comprise: 0-9, a-z, A-Z, _.
Refer to Fig. 5, for the automatic modeling module 30 of a kind of cybercity construction system 100 of the present invention, comprise the following steps: 1) import a project original document；2) convert file formats, is converted into SHP formatted file by DXF file；3) SHP formatted file is imported CityEngine software platform；4) the style coding of SHP pel is obtained；5) retrieve and assign CGA rule file；6) read other parameter values and substitute into CGA rule file；6) automatic modeling；7) reduced model file is to server；8) cleaning project document.
Described CGA rule file, the style coding of its filename style corresponding with site for service is consistent.
Described retrieval also assigns CGA rule file process: 1) read the parameter value representing style coding from SHP pel；2) according to this parameter value, from CGA rule base, CGA rule file of the same name is searched for；3) by the rule of this pel
File parameter is appointed as this CGA rule file, so that this pel is referred to this rule file and carries out automatic modeling.
In a word, the implementation method of the cybercity construction system of sing on web can be separated with parametric modeling by parameter management, centre is connected by Web, domestic consumer is enable to be absorbed in conceptual design and parameter management, the parametric modeling of complexity is then encapsulated in increasingly automated, the service end of procedure, thus reduce the technical threshold of user, improve cybercity construction efficiency, reduce model maintenance cost.
Claims (1)
1. a urban three-dimensional modeling method for sing on web, the method use cybercity construction system, described cybercity construction system, including
Parameter management module, imports parameter set from site for service, manages parameter set concentratedly and edit, the AutoCAD pel and parameter set that represent city atural object being associated with the form of attribute block, and be managed these attribute blocks as required and edit；
Site for service module, it is provided that style library inquiry and editor, project original document are uploaded, project status and progress queries, threedimensional model file download function；
Automatic modeling module, utilizes file format converter tools and CGA rule base, generates threedimensional model automatically and quickly；
It is characterized in that:
In described parametrization management module, select from site for service according to city type of ground objects and import parameter set, parameter set is managed concentratedly and edits, and the AutoCAD pel and parameter set that represent city atural object are associated with the form of attribute block, these attribute blocks can be managed and edit, after completing, save as DXF formatted file；In described site for service module, DXF formatted file is uploaded onto the server with the form of project original document, project name, generation time, process state and progress, original document download link and model file download link information can be checked；In described automatic modeling module, obtain the project original DXF file that user uploads onto the server, DXF form is converted into SHP form, and it is conducted into CityEngine platform, read the style coding of SHP pel, retrieve and assign CGA rule file, then read other parameter informations the automatic modeling of SHP pel, derive threedimensional model file afterwards to server, cleaning project document；Finally at described site for service, user is downloaded by link and obtains final city threedimensional model file.
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| CN107481306B (en) * | 2017-07-05 | 2022-11-29 | 国网山东省电力公司 | Three-dimensional interaction method |
| CN108416149B (en) * | 2018-03-13 | 2022-07-22 | 杭州新迪数字工程系统有限公司 | CAD-independent three-dimensional part real-time modeling method, terminal and storage medium |
| CN110660124A (en) * | 2019-08-15 | 2020-01-07 | 广东康云科技有限公司 | Three-dimensional model modeling and editing system and method |
| CN111161417A (en) * | 2019-12-16 | 2020-05-15 | 广东省国土资源技术中心 | Method for constructing three-dimensional data model based on real estate registration result |
| CN116991795B (en) * | 2023-06-27 | 2024-05-17 | 中国船舶集团有限公司第七一九研究所 | Automatic light-weight processing method and system for three-dimensional model |
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