bool   AddMesh(int obj,int mesh)
    Create a new mesh for current object. Before it you need initialize this object with InitObj(...) function.
    All mesh would have different material, so you want polygons with different material, make more mesh than one.
    
    Obj: the obj of last initobj .
    mesh: the next free mesh. you need ask it with GetMeshesNumber() function.

    Result:
    Success