Study on Modeling Technology Based on Polygon Transform

As one of the 3D modeling key technology, polygon transform have some operation and manipulation methods which can be applied neatly and confirmed by the characteristic of practical model. Polygon transform methods such as inserting vertex, inserting polygon, extrusion, transition join, triangulation and iterative triangulation algorithm and so on are discussed by using practical examples of reverse modeling in this paper. The experiment results show that using these methods synthetically have an effect on constructing and transforming complicated 3D model. We can thin polygons, redefine new local models, extrude polygon outwards or inwards and largen or reduce selective polygon borderline, form a new rolling polygon which joins on the original model, and subsection polygon into triangles by defining new borders inside the polygon.