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提出一个桌面虚拟环境下的笔式三维交互框架，包含交互原语和交互任务构造两个核心组件。
Including two main components for generating interaction primitives and interaction tasks, an architecture for pen-based 3D interaction in desktop virtual environment is proposed.
针对笔式三维建模技术的交互特征，提出一种隐式映射机制。
A kind of implicit mapping mechanism was proposed according to the characteristics of pen-based three-dimensional modeling technology.
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