A parametric structured modeling design method based on bim and gis

Abstract

The present invention provides a parametric structured modeling and design method based on BIM and GIS, using parametric and structured to construct three-dimensional scenes, which solves the problem of updating the model about design, position positioning, and parameter changes in tiny scenes. Constructive problems of the scene; the steps are as follows: build a parameter-based 3D model library; select the corresponding model from the 3D model library and construct it; regard the building shell as a frame object, and regard the objects in the building as sub-objects of the frame object, Describe the position information of the frame object through the geodetic coordinate system, establish the position space information of the sub-object through the descriptive position information, attachment relationship, relative position relationship, and topological relationship; parametrically construct the sub-object; use the topological relationship to construct objects with topological associations; Use interaction to transfer the relationship between objects; use the surface information of the frame object to construct its collision surface; obtain internal and external attributes to realize customized queries and operations.

Description

technical field [0001] The invention relates to a modeling technology of a three-dimensional solid scene, in particular to a parametric structured modeling design method based on BIM and GIS. Background technique [0002] In the traditional GIS (Geographic Information System) field, the concept of layers is usually used to manage spatial entities. Each layer manages the same type of objects, and there is a loosely coupled relationship between layers. Similarly, 3DGIS (three-dimensional spatial geographic information system) generally adopts this idea, and divides the three-dimensional solid scene into various layers such as terrain, image, vector, label, and model. The advantage of this method is that it is convenient for data collection, processing, and analysis of similar objects such as clustering, spatiotemporal association, and trend. But it becomes very unmanageable when dealing with highly structured or tiny (e.g. indoor, underground) scenes. [0003] In the field ...

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Problems solved by technology

[0005] The present invention provides a parametric structured modeling and design method based on BIM and GIS, using the two characteristics of parametric and structured to construct a three-dimensional scene combining BIM and GIS, and solves the problem of design and location in tiny scenes. Orientation, update of the model by parameter changes, and constructive issues of the scene

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