一种草图动画工具的设计与实现

针对当前计算机在中小学课堂应用中采用静态幻灯片模式对学生缺乏吸引力、教学效率不高等不足，以及现有的动画制作工具对于大部分教师难以使用的问题，探讨了基于运动轨迹的动画制作方法、草图动画中的动作协调，以及形变算法在草图动画中的应用等问题，实现了一个草图动画制作工具。该草图动画制作工具支持平移、旋转、放缩等草图动画中常用的动作方式。基于运动轨迹的动画制作方法和简洁的用户界面使得设置动作像绘制物体一样简单。使用形变动画作为轨迹动画的补充方式，可制作出更加生动的动画。老师使用该工具可以快捷方便地制作出自己的动画。

Design and implementation of sketching animation tool

Computer has become an important tool used in classroom.Yet there are some limitations.Most of them provide static slides in the project mode,which are not attractive to children,especially to the younger ones.And most of current animation tools are too complicated to common teachers.Aimed at removing the complexity barrier and allowing teachers to create a wide variety of animations quickly,this paper did some researches on the method of track-based animation,motion coordination of sketching animation,and the method of morphing.It also proposed a sketching animation system.The system supported translation,rotation,scale and other important motions of sketching animation.The track-based method made creating animations as easy as drawing.Morphing,as a supplement,could support more vivid animations.Teachers with this system could design and created their own animation quickly.