In motion simulations, video games and animation films, lots of interactions between characters and virtual environments are needed. Even though realistic motion data can be derived from MoCap system, motion editing and synthesis, animators must adapt these motion data to specific virtual environment manually, which is a boring and time-consuming job. Here we propose a framework to program the movements of characters and generate navigation animations in virtual environment. Given a virtual environment, a visual user interface is provided for animators to interactively generate motion scripts, describing the characters' movements in this scene and finally used to retrieve motion clips from MoCap database and generate navigation animations automatically. This framework also provides flexible mechanism for animators to get varied resulting animations by configurable table of motion bias coefficients and interactive visual user interface.
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