Method for displaying space information of IFC model component on Web

Abstract

The invention discloses a method for displaying component space information of an IFC model on the Web, which comprises the following steps: 1) in IFC modeling, carrying out space naming on a component of the model by adopting a space identifier; 2) analyzing the IFC file in a BIM engine to obtain graphic data and spatial structure information of the model; 3) generating a 3D model from the IFC file, attaching the spatial name extracted from the IFC file to the 3D model, assembling a tree structure through a regular expression according to the identifier of the spatial name, and storing the tree structure into a storage library; 4) calling a tree structure of the storage library data, taking a spatial name contained in a tree node as an index, traversing all components in the 3D model, andfinding a component matched with the index; and displaying the spatial information by hovering a component in the 3D model. The method overcomes the difficulties that the IFC Web display cannot obtain the space structure tree and the regional model component cannot be selected, and has the advantages that the range is gradually narrowed from large to small for viewing, the model component is quickly positioned, the affiliation information of the model component is displayed, and the model operation is carried out.

Description

technical field [0001] The invention belongs to the technical field of intelligent buildings, and relates to a method for displaying space information of IFC model components on the Web. Background technique [0002] IFC (Industry Foundation Classes) is a general file (data conversion format) for BIM models in the field of intelligent buildings, which enables the conversion and exchange of models between various engineering software, and its core lies in information description and information communication. It provides geometric information for drawing models and tree structure information by model type, but does not provide spatial tree structure information. [0003] At present, the tree structure of family type can be generated by parsing IFC, such as family IfcDoor, IfcSlab, IfcWall, IfcWindow, etc., to generate tree structure and space tags classified by door, floor, wall, window, etc., from the space of the structure If the spatial information and spatial tree struct...

AI Technical Summary

Problems solved by technology

[0003] At present, the tree structure of family type can be generated by parsing IFC, such as family IfcDoor, IfcSlab, IfcWall, IfcWindow, etc., to generate tree structure and space tags classified by door, floor, wall, window, etc., from the space of the structure The spatial information and spatial tree structure of the model cannot be extracted from the markup, so it is impossible to interact with the model according to the easy-to-understand interaction methods in life

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