面向对象技术在机械系统运动图形仿真中的应用①

Application ofObject-Oriented Technique to GraphSimulation of Mechanical System Motion

The method usingObject-Oriented Programming Technique to build the geometric model of mechanical systemsis introduced. There are two kinds of objects in the geometric model of a mechanicalsystem the graphs and the joints(that is, constraints). The basic graph class which hasthe common attributes of all graphs is constructed. Then, different graph classes, such asthe box class, the cylinder class, the circle class, and so on, are derived from the basicgraph class. These classes inherit all the attributes belonging to the basic graph class.The joints are special graphs, so the basic joint class also can be derived from the basicgraph class. All joint classes inherit all the attributes of the basic graph class and thebasic joint class. This method is highly efficient, and easy to realize and to expand.