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Two-dimensional and three-dimensional linkage and superposition display method based on structured BIM model

A superimposed display and structured technology, applied in the field of data processing, can solve the problems of incomplete division of geometric reuse, not beautiful, lack of component information in two-dimensional drawings, etc., to achieve the effect of linkage interaction and browsing, and preserve integrity

Active Publication Date: 2020-01-14
水利部水利水电规划设计总院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the material or texture of the original model is not saved, the display of the model lacks professionalism and is not beautiful enough, which completely loses the original intention of the designer; only the current 3D view is read, and the camera information is missing, so the view cannot be effectively positioned and the view information is incomplete ;Geometric reuse division is not thorough, so that the file compression rate is low, and the reading speed is greatly reduced; geometric reuse does not consider the material, resulting in unreal component display, and the subsequent modification operation is not flexible enough; the lack of component information in 2D drawings makes two-dimensional The superimposed display and interaction of dimensional drawings and 3D views, and the effective information of components cannot be viewed in 2D drawings

Method used

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  • Two-dimensional and three-dimensional linkage and superposition display method based on structured BIM model
  • Two-dimensional and three-dimensional linkage and superposition display method based on structured BIM model
  • Two-dimensional and three-dimensional linkage and superposition display method based on structured BIM model

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Experimental program
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Effect test

Embodiment approach

[0112] According to a preferred embodiment of the present invention, step 2 traverses component information in three-dimensional space, including the following sub-steps:

[0113] Sub-step 2-1, traversing the components in the three-dimensional space, saving the component ID and component name; 114, the traversal method includes but not limited to the traversal of the Revit export interface IExportContext.

[0114] Among them, any component has one and only one component ID, that is, the same component has the same ID in 3D space and 2D drawing.

[0115] Substep 2-2, read component attributes;

[0116] Wherein, the attribute of the component includes the attribute of the current component and the attribute of the component type to which the component belongs. As a component in an actual project, there are design information, actual engineering information, etc., which all belong to component attributes. At the same time, the attribute information of the component is read to ...

Embodiment 1

[0225]In the application desktop software, the 3D view and the 2D drawing can only exist as side-by-side windows at the same time, but in the BIM platform, the superimposed display in the same window can be realized. Such as Figure 6 and Figure 8 shown.

Embodiment 2

[0227] The source files (Revit) numbered 1-4 are respectively processed according to the method of the present invention, and converted into the structured storage file Pbc supported by the BIM platform in the present invention, and the file opening time before and after processing is shown in Table 1.

[0228] Table 1:

[0229]

[0230] It can be seen from Table 1 that after being processed by the method of the present invention, the opening time of the BIM file is significantly shortened, and efficient and fast opening is realized, which once again proves that the BIM file has completed lightweight processing.

[0231] Reasons for faster file open times after conversion include:

[0232] (1) In the present invention, images are used to store two-dimensional drawings, and are stored with base64 strings, so that the file structure is clearer, web service requests are reduced, and the loading speed is faster (that is, two files are sent less for each two-dimensional drawing)...

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Abstract

The invention discloses a two-dimensional and three-dimensional linkage and superposition display method based on a structured BIM (Building Information Model), which comprises the following steps of:reading and storing information of the BIM at a BIM storage end, including view information and component information in a three-dimensional view, and drawing information, component information and symbol information in a two-dimensional drawing; loading the information of the three-dimensional view and the information of the two-dimensional drawing at the BIM model display end at the same time,and therefore it is guaranteed that the position corresponding to the two-dimensional drawing can be located in the three-dimensional data browsing process; and when the two-dimensional drawing is viewed, positioning the position and the component in the three-dimensional space. In this way, the topological relation of the BIM model in the three-dimensional space and the visual interaction cooperation of the two-dimensional layout are achieved, and the overall understanding of the BIM model is deepened.

Description

technical field [0001] The invention belongs to the field of data processing, and relates to a method for storing two-dimensional and three-dimensional data of a BIM model and realizing data linkage and superimposed display on a BIM platform. Background technique [0002] BIM (Building Information Modeling) technology is based on the relevant information data of construction projects, simulates the real information of buildings through digital information, and realizes project supervision, property management, equipment management, and digitalization through three-dimensional building models. Processing, engineering management and other functions. [0003] However, in the entire cycle of a BIM project, from scheme, design, construction to operation and maintenance, a corresponding 3D model will be produced at each stage. As an integral part of the project, 2D drawings run through all stages of the project. Existing platforms usually focus more on the overall browsing of 3D...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06T17/10
CPCG06T17/10G06T2210/04
Inventor 刘志明刘辉薛友松
Owner 水利部水利水电规划设计总院
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