CAD drawing-based building indoor cross-floor space extraction method
An indoor space and extraction method technology, applied in geometric CAD, special data processing applications, instruments, etc., can solve the problems of no CAD cross-floor space extraction method, cross-floor space geometry extraction errors, etc., to improve algorithm efficiency and enhance accuracy. rate effect
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[0027] The steps of this embodiment are as follows:
[0028] (1) Extract the components enclosing the indoor space of the building from the CAD drawings through methods such as constraint network and sample-driven symbol recognition. These building components that play an enclosed role are the boundary components of the indoor space; read in the boundary components of the indoor space The two-dimensional geometry set B={B i ,i∈[0,n)}, B i Indicates the geometry of the i-th boundary component, n indicates the number of boundary components, and then calculates the union U of the boundary components of the indoor space through the boundary component set B; find the convex hull C of the union U of the boundary components enclosing the indoor space of the building ;Use the convex hull C and the union U of the boundary components enclosing the indoor space of the building to do the Boolean difference operation to obtain the corresponding polygon, which includes t...
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