摘要: Sketch-based applications are rapidly gaining popularity in 3D modelling because of the intuitive pen-and-paper metaphor. Even inexperienced users with little computer graphics and digital design background can use them to create models rapidly. However, development sketch-based is usually difficult time consuming. In this paper, we present a framework for simplifying applications. The integrates existing techniques sketch processing pipeline input, state-machine defining parameters modes, customised event handler. modular means that functionality be easily extended future. Experimental results suggest easy implemented functionalities work correctly.