Ask a master, what is the difference between traditional tween, tween animation and tween shape in flash? When are all kinds of tween animations used?

To tell the truth, I have talked too much one by one. Simply put, there are four animation types in modern Flash CS4, namely frame-by-frame animation, tween animation, traditional tween and tween shape.

Frame-by-frame animation is composed of many single continuous key frames, which can show continuous and smooth movements, but it will occupy a lot of memory and workload. Interpolation animation is a new animation method and a new type of CS4. CS4 automatically records the key frames of animation, that is, it can change the "trajectory" of material movement under the condition of creating tween animation on the stage; The traditional tweening is based on the difference in size, position, rotation, tilt and transparency of the same object in two key frames. For a material in the zoom stage, you add a key frame in the first 1 frame to confirm the position of the material, and then insert a key frame in the 20th frame to move the material, change the size, transparency, etc. , and then insert and create it in any frame between frame 1 and frame 20. Tween shape animation is the process of calculating the "difference" of "vector" graphics between different frames, that is, how to change between two different graphics, such as the change between a square and a circle. You can insert keyframes between different frames, then draw rectangles and circles on the stage of the two keyframes respectively, and then create tween shapes.