3D printing entity model generation method based on half-side and half-surface data structure

The invention provides a half-side and half-surface data structure-based 3D printing entity model generation method. The method comprises the following steps of 1, constructing basic grid data; step 2, constructing a semi-surface link element; step 3, constructing a half link element and constructing a half ring; step 4, complementing missing member attributes in all the existing objects by the completed content; and 5, carrying out topological structure inspection on the constructed entity grid according to a construction rule to ensure that the corresponding relationship between the contained topological information and the link elements is correct and complete, and if no problem exists, completing the construction of the entity grid. Through the steps, a spline entity model construction process based on a half-side and half-surface data structure can be completed, and the constructed spline entity model not only can completely express a geometric topological structure of the entity model, but also has the