Geometric modeling lofting data processing method and computer readable storage medium

The invention provides a geometric modeling lofting data processing method which comprises the following steps: establishing or importing a target modeling BIM model, and determining the position of a model site in the target modeling BIM model; calling an observation point density control rule; based on the target modeling BIM model and an observation point density control rule, model modeling observation points are extracted; on the basis of the positions of the model sites and model modeling observation points, connecting the model sites with the modeling observation points to form observation lines; calculating or extracting BIM data of a target modeling BIM model according to the observation line and extraction, calculation and unit conversion rules; calling a filtering rule, and generating a filtering result based on the calculated or extracted BIM data; extracting lofting site data; formatting the filtering result and the lofting site data according to the formatting rule; and outputting and generating