Roof modeling method and device

A modeling method and vertex technology, applied in 3D modeling, image data processing, special data processing applications, etc., can solve the problems of no eaves processing method, lack of methods for dealing with degradation situations, and secret technology implementation
CN110598331AActive Publication Date: 2019-12-20GLODON CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GLODON CO LTD
Publication Date
2019-12-20

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Abstract

The invention discloses a roof modeling method and device. The method comprises: preprocessing an input outer wall contour line, dispersing an arc in the outer wall contour line, calculating and generating a straight skeleton of the roof according to the preprocessed and discretized polygons, calculating a Z coordinate of a straight skeleton node, generating a wireframe and roof polyhedron model based on the generated straight skeleton and coordinates thereof, generating a conical surface when the input outer wall contour line contains an arc, generating a roof lower surface model, and generating eaves. The situations of arcs, gable walls and different slope angles are processed through a reinforced straight skeleton algorithm, the roof model can be efficiently and accurately generated, and a roof modeling mode which is stable, reliable and capable of meeting different requirements of users can be achieved.
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Description

technical field

[0001] The application belongs to the technical field of computer building modeling, and in particular relates to a roof modeling method and device. Background technique

[0002] Roof modeling is an indispensable and important part of architectural modeling. A stable, efficient and accurate roof modeling method is conducive to improving the performance and stability of the architectural modeling system. Roof modeling generally takes the closed two-dimensional contour line (located in the xoy plane) formed by the centerline of the building's exterior wall as input, and the output is a solid model of the roof. Each side of the contour line corresponds to a slope angle (defining the angle between the roof surface and the roof bottom surface), each side and its corresponding slope angle define a roof plane, and all roof planes constitute the roof surface. The upper and lower surfaces of the roof define the solid model of the roof.

[0003] Roof modeling is imp...

Claims

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