In view of the complication in the modeling of movements nesting, this paper discusses how to decompose nonlinear movement as several simple linear and nonlinear movements' iteration applying the principium of plane coordinate relativity which determines the relationship of coordinates in the same plane,and the author reflects these ″nonlinear″ and ″linear″concepts to OOP's corresponding concepts such as class,object and inheritance,etc.Such kind of work greatly simplizes the plane simulation of nesting ...