B/S Based 2D Sketch System

Computers are so important tools used in classroom. Yet most of them provide static slides in the project mode, which are not attractive to children, especially to the younger ones. This paper presents a 2D freehand sketching system. Unlike the traditional 2D animation tools, which are created by experts, it helps novices create a wide range of animations quickly. 2D coordinate input for generating strokes on a user-share like 2D canvas, which makes it possible that novice can sketch freehand in 2D space and make animations with no limitation. The system is based on B/S, which is possible for participants make animations together, especially for classroom teaching. A novel optimization points resampling enabled participants to transfer data much effectively. It also supports translation, rotation, scale and other important motions of sketching animation. The track based method made creating animations as easy as drawing. Teachers with this system could design and created their own animation quickly, and will have a good interaction with students.