Method and system for generating plane profile diagram based on building model and storage medium

Abstract

The invention belongs to the field of digital modeling display, and particularly relates to a method and system for generating a plane profile diagram based on a building model and a storage medium. In the prior art, a plane profile diagram generated according to a building model generally contains all primitives, three-dimensional and two-dimensional synchronous rendering inevitably adds additional pressure to a rendering engine, and height cutting is difficult to realize accurately. Based on a building model as a rendering object, attributes of all primitives are obtained through file analysis corresponding to a rendering object, or the primitives in a building model are classified through a method of customizing extended data by a user, and then the filtered primitives are rendered fromthe perspective of a top view to generate a plane contour map through a filtering rule customized by the user. The method does not increase the pressure of three-dimensional rendering, does not entangle the problem of plane generation height, does not need to worry about the problem of splitting from the middle of a primitive, and supports two-dimensional and three-dimensional linkage.

Description

technical field [0001] The invention belongs to the field of digital modeling and display, and in particular relates to a method, system and storage medium for generating a plane outline drawing based on a building model. Background technique [0002] In the process of browsing complex rendered models, especially architectural models, in addition to viewing 3D renderings, it is often necessary to view in combination with plan views in order to locate or determine local details. In addition, according to different usage scenarios, the plane outline diagram generated from the architectural model is also different, and it is not necessary to display all the primitives in the rendered model. [0003] At present, there are usually two methods for generating plane outline drawings based on architectural models: one is to perform two-dimensional rendering of all or part of the graphic elements while performing three-dimensional rendering of the architectural model; the other is to ...

AI Technical Summary

Problems solved by technology

[0005] (1) The plane outline diagram generated based on the architectural model usually contains all the graphics elements, and the graphics elements with rendering value are not filtered out according to the actual needs;

[0006] (2) Perform 2D plane rendering while 3D rendering, which will inevitably add extra pressure to the rendering engine;

[0007] (3) The difficulty in

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