An overly accurate description of a state machine is that it is a directed graph, consisting of a set of nodes and a corresponding set of transitionfunctions.
关于状态机的一个极度确切的描述是它是一个有向图形，由一组节点和一组相应的转移函数组成。
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Interface modes and their transitionfunctions are defined, and the related visualization presentations styles are described, such as reconstruction, replacement, geometry transition, filter and push.