You may be thinking that this is unnecessarily complicated... and you are probably right. Also this way of working with images leaves enough room to different hacks and creative tricks. Try to imagine that you are an upholster and by stretching and folding a fabric over a structure you can create better and new patterns and techniques.
![Eadweard's Muybridge study of motion](muybridge.jpg)
This level of craftsmanship links back to some of the first optical experiments ever made. For example on games *sprite animations* are very common, and is inevitably to see on it reminiscence to phenakistoscope, zoetrope and praxinoscope.
* What other optical toys can you re-create using textures?
* 你还可以使用纹理来再创造哪些其他的光学玩具吗?
In the next chapters we will learn how to do some image processing using shaders. You will note that finally the complexity of shader makes sense, because it was in a big sense designed to do this type of process. We will start doing some image operations!