CN110704920A - Revit model-based online lightweight method and system - Google Patents
Revit model-based online lightweight method and system Download PDFInfo
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- CN110704920A CN110704920A CN201910918974.0A CN201910918974A CN110704920A CN 110704920 A CN110704920 A CN 110704920A CN 201910918974 A CN201910918974 A CN 201910918974A CN 110704920 A CN110704920 A CN 110704920A
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Abstract
The invention provides an online lightweight method and system based on a Revit model, wherein the method comprises the following steps: installing an interface plug-in on the Revit model; and the Revit model performs data interaction with the server side through the interface plug-in. According to the method and the device, the interface plug-in is installed on the Revit model, so that the lightweight of the model data can be put at the terminal for processing, the server only needs to receive the data after the lightweight, the data transmission quantity between the server and the terminal is effectively reduced, and the model data transmission efficiency is improved.
Description
Technical Field
The invention relates to the field of building information modeling, in particular to an online lightweight method and system based on a Revit model.
Background
The light-weight Building of the Building industry starts with the light weight of Building Information Models (BIMs). The maximum value of BIM lies in the cooperation, which is needed among different posts, different specialties and multiple parties, and the most basic work is to integrate multiple professional models into a full-professional model.
When the building information model is modeled, the original design model retains a lot of information in the design process, the model is large in size, after a plurality of professional models are integrated, the size can be increased by orders of magnitude, and the requirements on hardware are very strict. With the comprehensive popularization of smart phones and tablet computers, basic hardware conditions of mobile office work are already met. However, the BIM model has not kept pace with the data size of hundreds of M and G, which is a huge challenge to the processing capability and network traffic of mobile devices, and therefore, the data weight reduction of these models is the only way to meet the needs of mobile office.
Most of the existing solutions for the Revit light weight are carried out based on remote servers in different places, specifically, a user submits a design result file to the server, and the server installs a Revit product to carry out light weight analysis and convert the product into a model which can be seen by a computer or a mobile terminal. The process needs to transmit large-capacity files, and meanwhile, the server also needs to install Revit software with different versions to adapt to Revit model files transmitted by different clients, so that the problems of slow data transmission, complex operation and incapability of meeting the requirements of mobile office work exist.
Disclosure of Invention
Therefore, an online lightweight technical scheme based on a Revit model is needed to be provided for solving the problems of slow data transmission, complex operation and incapability of meeting the requirements of mobile office in the existing Revit lightweight scheme.
To achieve the above object, the inventors provide an online weight reduction method based on a Revit model, the method comprising the steps of:
installing an interface plug-in on the Revit model;
and the Revit model performs data interaction with the server side through the interface plug-in.
Further, the "Revit model performs data interaction with the server through the interface plug-in" includes:
sending the model data to an analysis server through an interface plug-in;
and the analysis server receives the model data for analysis and stores the analyzed model data in a storage unit of the server.
Further, the "Revit model performs data interaction with the server through the interface plug-in" includes:
and when the server receives a data acquisition request sent by the interface plug-in, calling corresponding model data from a storage unit of the server and sending the model data to the interface plug-in.
Further, the method further comprises:
and when the server receives a data acquisition request sent by the terminal, calling corresponding model data from a storage unit of the server and sending the model data to the terminal for display.
Further, the terminals include a first terminal and a second terminal, and the method includes:
when a first terminal and a server side perform data interaction online, interactive data are synchronously displayed on a second terminal;
or, when the second terminal and the server perform data interaction online, the interactive data is synchronously displayed at the first terminal.
Further, the method comprises:
sending a control instruction to a server through the first terminal or the second terminal;
and the server side forwards the control instruction to the interface plug-in so as to control the Revit model to execute corresponding operation.
Further, the model data comprises geometric description information and non-geometric information.
Further, the interface plug-in is obtained by:
building a Revit plug-in development framework according to the standard requirements of the Revit model;
setting a configuration file in the original Revit model as an installation package program to be automatically executed;
and a plurality of interactive buttons are set by self-definition, and the interactive function with the server is realized by receiving an operation instruction through each interactive button.
Further, "building a Revit plug-in development framework according to the specification requirements of the Revit model" includes:
an API file referencing Revit;
defining an action handling property as manual;
declaring a class that inherits the external command interface of the Revit API;
the reload command performs an action.
The inventor also provides an online lightweight system based on the Revit model, which comprises a terminal and a server, wherein the terminal and the server are used for executing the method.
The online lightweight method and system based on the Revit model in the technical scheme comprise the following steps: installing an interface plug-in on the Revit model; and the Revit model performs data interaction with the server side through the interface plug-in. According to the method and the device, the interface plug-in is installed on the Revit model, so that the lightweight of the model data can be put at the terminal for processing, the server only needs to receive the data after the lightweight, the data transmission quantity between the server and the terminal is effectively reduced, and the model data transmission efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of an online lightweight system based on a Revit model according to an embodiment of the present invention;
fig. 2 is a flowchart of an online lightweight method based on a Revit model according to an embodiment of the present invention;
FIG. 3 is a flow chart of an online weight reduction method based on a Revit model according to another embodiment of the present invention;
FIG. 4 is a flowchart of an online weight reduction method based on a Revit model according to another embodiment of the present invention;
description of reference numerals:
1. a first terminal;
10. revit modeling software; 101. a Revit plug-in;
2. a server side; 201. a storage unit;
3. and a second terminal.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 2 is a schematic diagram of an online lightweight system based on a Revit model according to an embodiment of the present invention. The method comprises the following steps:
the process first proceeds to step S201 to install an interface plug-in on the Revit model.
The Revit modeling software is fully called Autodesk Revit Architecture software and is specially constructed for Building Information Model (BIM). BIM is an integrated process built on the basis of coordinated, reliable project information from design, construction to operation. By employing BIM, building companies can design and draw innovative projects using consistent information throughout the process, and can also support better communication by accurately visualizing building appearance, simulating real performance to let project parties know cost, construction period, and environmental impact.
Preferably, the Revit model software is installed at a PC end of the user, and the user can model the building information through the PC end to obtain a model required by the user. However, the existing Revit model software has no communication function, the transmission of modeling data needs to be completed by relying on other communication software, the transmitted data is limited to original modeling data, the data transmission efficiency is affected due to large data volume, and in order to solve the problems, the Revit model software has the communication function by installing corresponding interface plug-ins in the Revit model software, so that the transmission of the modeling data after being lightened is realized, and meanwhile, the requirement of mobile office is met.
And then, the step S202 is carried out, namely, the Revit model carries out data interaction with the server side through the interface plug-in.
In this embodiment, the interface plug-in specifically implements the following functions: (1) deriving a Revit model; (2) lightening the geometric data of the model; (3) merging and serializing the lightweight data; (4) uploading the lightweight data to a server; (5) and connecting with the server in real time, and synchronously executing the commands transmitted by the server.
As shown in fig. 4, the interface plug-in is obtained by:
firstly, step S401 is carried out, and a Revit plug-in development framework is built according to the specification requirement of the Revit model. Then, step S402 is carried out, and the configuration file in the original Revit model is set as an installation package program to be automatically executed; and then, step S403 is carried out to set a plurality of interactive buttons in a self-defined manner, and the interactive function with the server is realized by receiving operation instructions through the interactive buttons.
As shown in fig. 3, step S401 specifically includes:
the process first advances to step S301 to refer to the API file of Revit. The API files of Revit are RevitAPI.dll and RevitAPI.dll.
Then, the process proceeds to step S302 to define the action process characteristic as manual. Namely, the action processing characteristic Transaction in the Revit model software is Manual.
Then step S303 is entered to declare a class, inheriting the external command interface of the Revit API. The external command interface of the Revit API is IexternalCommand.
And then proceeds to step S304 to reload the command execution action.
Specifically, the action command of step S304 may be implemented by designing several buttons with interactive functions, and when the user clicks these buttons, the corresponding operation instruction is triggered to implement the corresponding interactive function. The interactive button function specifically includes:
(1) deriving a Revit model;
the derived information includes geometric description information or non-geometric information including project information, element information, material information, and attribute information. The project information includes a designer name of the design model, a subject of the design model, a completion time, and hierarchical information of the model. The element information includes information on each component in the model data, each component name, component type (window, door, wall, etc.), and ID value, parent-child relationship value, etc. of Revitd. The material information includes information of various renderings, color information, and the like at the time of modeling. The attribute information includes textual description information of each element component in the model data. The geometric description information comprises member ID, geometric position and geometric information.
(2) Lightening the geometric data of the model;
specifically, the redundant geometric primitives are deleted, and the small geometric primitives are merged. In practical applications, a plurality of triangles are used to describe a geometric solid, and a triangle is called a geometric primitive.
(3) Merging and serializing the lightweight data;
the received non-geometric information and the geometric information after the weight reduction are merged and serialized into a file.
(4) Splitting and compressing files (namely splitting and compressing original data);
(5) uploading the lightweight data to a server in batches;
(6) and the plug-in runs a submodule which is connected with the server in real time and synchronously executes the command transmitted by the server.
In some embodiments, the "Revit model performs data interaction with the server through the interface plug-in" includes: sending the model data to an analysis server through an interface plug-in; and the analysis server receives the model data for analysis and stores the analyzed model data in a storage unit of the server.
The main function of the analysis server is to analyze the processed model data transmitted by the subsystem. The method comprises the following implementation steps:
(1) decompressing the file uploaded by the client, and deserializing the model information;
(2) storing the project information;
(3) storing material information;
(4) parsing model data, the model data including elemental building block information, geometric information, and attribute information.
The analysis process is as follows:
the method comprises the following steps: reading all the elements;
step two: matching the upper-floor relation for each element, namely matching each element with the stored project information level information through the floor name, and assigning a level ID;
step three: generating tree structure information according to the element hierarchical relationship and the element type group;
step four: reading all the geometric description information;
step five: removing redundant point information in the geometric description information;
step six: coarsening primitive information according to the parameter values, namely combining triangles, wherein one triangle is a primitive;
step seven: judging whether the oblique angle of the adjacent graphic elements is larger than a preset angle value, if so, adding a scribing line between the adjacent graphic elements so as to distinguish the two graphic elements by the displayed rhombus angle, wherein the preset angle value can be set as required actually, and can be 20 degrees for example;
step eight: matching the geometric object with the element (matching the element ID in the third step with the element ID in the first step);
step nine: matching the geometric objects with materials (matching through stored material information);
step ten: giving color values to the geometry according to the ninth step and the stored material information;
step eleven: and storing tree structure information, element basic information, geometric information and attribute information.
The data storage mode of the model data on the server is as follows: the geometric information is stored in a file, and other information is stored in a database. Because for display, a batch of data is transmitted to the front-end page and then displayed after geometric transformation, and the subsequent operations are all viewed from the front-end page without interaction with the back-end data device, the information is stored by a file and transmitted to the front end by a file stream when the front-end displays items. Other information belongs to query information, and the data volume is extremely large, and the information is acquired from the back end when the front end needs the information, so that the information is stored in the database.
In short, the storage unit of the server includes a database storage unit and a file storage unit, and the database storage unit is used for storing non-geometric information, so that a user can call information such as query model attributes at any time. The file storage unit is used for storing geometric description information, and data are transmitted between the server and the terminal in a file stream mode, so that a user can conveniently view the BIM three-dimensional geometric model.
In some embodiments, the "Revit model performs data interaction with the server through the interface plug-in" includes: and when the server receives a data acquisition request sent by the interface plug-in, calling corresponding model data from a storage unit of the server and sending the model data to the interface plug-in.
The server side and the terminal carry out data interaction, and the main functions are as follows: (1) for delivering data to a user query; (2) the data are transmitted in real time as the intermediary between the user display end and the Revit modeling end.
The method comprises the following concrete steps:
(1) assigning a unique value as a client identifier so as to facilitate the interaction of the information of the service end and the client;
(2) transmitting geometric information data of the model at one time;
(3) as a service, waiting for a command to transmit the attribute information of the element component (when receiving the acquisition geometry information, the back end asynchronously loads the attribute information floor information of the modified model into the cache);
(4) as a service, a third party command (computer modeled by Revit software) is waited for, and the client side is controlled to work in a display mode (such as moving a viewpoint and displaying a single component).
In certain embodiments, the method further comprises: and when the server receives a data acquisition request sent by the terminal, calling corresponding model data from a storage unit of the server and sending the model data to the terminal for display.
Preferably, the terminal includes a first terminal and a second terminal, and the method includes:
when a first terminal and a server side perform data interaction online, interactive data are synchronously displayed on a second terminal; or, when the second terminal and the server perform data interaction online, the interactive data is synchronously displayed at the first terminal. The method comprises the following steps: sending a control instruction to a server through the first terminal or the second terminal; and the server side forwards the control instruction to the interface plug-in so as to control the Revit model to execute corresponding operation.
The terminal is a web browser of a personal computer or mobile equipment, the mobile equipment comprises but is not limited to a mobile phone, a tablet and the like, and the terminal is mainly used for displaying model data and providing basic operation for the model data, and particularly displaying a complete geometric model analyzed by a server. Besides displaying the model data, the terminal also displays model information corresponding to the model data, wherein the model information comprises project information, tree structure information, element construction information and the like.
In addition, the terminal is also used for sending commands and interacting with other terminals (including a Revit client and a Web client). And the terminal is also used for waiting for commands sent by other terminals to interact with other clients (including the Revit client and the Web client).
As shown in fig. 1, the present invention further provides an online lightweight system based on a Revit model, which includes a terminal and a server, and the terminal and the server are configured to execute the method as described above.
Specifically, the terminals include a first terminal 1 and a second terminal 3, the first terminal 1 and the second terminal 3 are respectively connected with the server 2, preferably, the first terminal 1 is a PC equipped with Revit modeling software 10, and the second terminal is an electronic device with data display and operation functions, and may be a web browser of the PC or a mobile device. The Revit modeling software 10 is provided with a Revit plug-in 101, the server 2 comprises a storage unit 201, the Revit modeling software 10 realizes data interaction with the server through the Revit plug-in 101, the server stores the analyzed data in the storage unit 201 of the server, and when receiving a data acquisition instruction of the first terminal 1, the data acquisition instruction is sent to the first terminal 1. Meanwhile, the second terminal 3 may also synchronously display data currently displayed on the first terminal, and the second terminal may also actively initiate a control instruction to the server to control model data in a storage unit of the server, so as to change the model data in the Revit modeling software 10 on the first terminal 1. Therefore, through interaction between the terminals and the server, the function of controlling model data by the terminals can be realized, multiple users can complete modeling tasks in a collaborative mode conveniently, and modeling efficiency is improved.
The data flow among several subsystems involved in the invention is as follows: firstly, the Revit plug-in analyzes the lightweight split compressed file and transmits the file through a one-key transmission function on the Revit plug-in. Then the model analysis server further analyzes the model data and stores the model data in the data storage subsystem; and then the data storage server provides data to the model data server, and the model data server extracts the data from the data storage server according to the demand command of each terminal and transmits the data to the Web lightweight display terminal.
And under the online condition, the user displays data interaction between the end and the database. The server transmits the geometric data of the model to the display end; the display end sends a command for requesting non-geometric information data of the BIM model; and the display terminal sends a command for requesting synchronous data to the modeling PC terminal.
Under the online condition, the modeling PC terminal transmits command data to the server to request synchronous data to the display terminal; or the modeling PC side waits for a command from the server to control the model operation of the Revit modeling software in real time.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (10)
1. An online lightweight method based on a Revit model, characterized by comprising the steps of:
installing an interface plug-in on the Revit model;
and the Revit model performs data interaction with the server side through the interface plug-in.
2. The online lightweight method according to claim 1, wherein the step of enabling the Revit model to perform data interaction with the server through the interface plug-in comprises the following steps:
sending the model data to an analysis server through an interface plug-in;
and the analysis server receives the model data for analysis and stores the analyzed model data in a storage unit of the server.
3. The online lightweight method according to claim 2, wherein the step of enabling the Revit model to perform data interaction with the server through the interface plug-in comprises the following steps:
and when the server receives a data acquisition request sent by the interface plug-in, calling corresponding model data from a storage unit of the server and sending the model data to the interface plug-in.
4. The online lightening method of claim 2, further comprising:
and when the server receives a data acquisition request sent by the terminal, calling corresponding model data from a storage unit of the server and sending the model data to the terminal for display.
5. The online lightening method of claim 2, wherein the terminal comprises a first terminal and a second terminal, the method comprising:
when a first terminal and a server side perform data interaction online, interactive data are synchronously displayed on a second terminal;
or, when the second terminal and the server perform data interaction online, the interactive data is synchronously displayed at the first terminal.
6. The online lightening method of claim 5, wherein the method comprises:
sending a control instruction to a server through the first terminal or the second terminal;
and the server side forwards the control instruction to the interface plug-in so as to control the Revit model to execute corresponding operation.
7. The online weight reduction method according to claim 1, wherein the model data includes geometric description information and non-geometric information.
8. An online lightening method according to any one of claims 1 to 7, wherein the interface plug-in is obtained by:
building a Revit plug-in development framework according to the standard requirements of the Revit model;
setting a configuration file in the original Revit model as an installation package program to be automatically executed;
and a plurality of interactive buttons are set by self-definition, and the interactive function with the server is realized by receiving an operation instruction through each interactive button.
9. The online lightweight method according to claim 8, wherein the building of the Revit plug-in development framework according to the specification requirements of the Revit model comprises:
an API file referencing Revit;
defining an action handling property as manual;
declaring a class that inherits the external command interface of the Revit API;
the reload command performs an action.
10. An online lightweight system based on a Revit model, characterized in that the system comprises a terminal and a server, the terminal and the server are used for executing the method according to any one of claims 1 to 9.
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