摘要: Geometric representation associated with computer-assisted modeling has proven to be very usefull visualize and understand the structure behavior of a wide spectrum entities (Foley et al. 1990). But if we examine scope current 3D geometric models, notice that they tend embrace static view information structure. In this chapter, are particularly interested in stating requirements for complex environments mobile components. Such approach integrate dynamic these components such specific goals can acheived space time. A key requirement is provide relative motions addressed through use hierarchical modeling.