Based on the mesostructures of heterogeneous materials to partition meshes and using polygonal elements in finite element analysis
the numerical simulation based on real structures of materials can be realized. A geometric construction method of polygonal interpolation is presented. Constructing an aided polygon
the basis function expressions of polygonal interpolation are given using divergence theorem. The equivalence of geometric construction method and barycentric coordinates method by Floater is proved. The construction methods and properties of Wachspress interpolation
Laplace interpolation and mean value interpolation are compared and analyzed.