[Retracted] Model of the Integration of the Building Interior with the Natural Environment Based on Nanomaterials and I.M. Pei’s Design Concept

Table 3

Elements of the spatial structure of the point cloud data inside the building.

Serial number	Key constituent	Instructions
1	IfcProject	Classes expressing all information about construction work
2	IfcSite	Information on all buildings
3	IfcBuilding	Classes describing building accessory information, excluding building geometry information
4	IfcBuildingStorey	A class describing information about the floor itself, including detailed geometric profiles of building components such as windows, doors, and walls, spatial relative position information, and correlation between the components