Research on design methods of coordinate transformation and navigation in virtual maintains system

The transformation matrix between local coordinate and world coordinate of virtual maintain system was designed, and the methods of coordinate transformation among different objects were given this article. A viewpoint transformation function was designed, and the location and direction of viewpoint could be controlled conveniently. A logical detaching algorithm of nodes was put forward, it could free relationship of administrative subordination between nodes, and the problem of motion interconnection between detached node and father node was solved, the model of navigation was reasonable and interactive operation was really true.