Examples of sprite sheet generation tools found on Internet are TexturePacker™, Zwoptex™ and SWFSheet. Sprite sheet generation tools are becoming more common because game development for devices and the web is currently a big business and sprite sheets are used in a lot of game development engines. The user or developer could then point to each category using pixel co-ordinates as locations. The transparency aids in applying a background color using, for example, Cascading Style Sheets (CSS), as necessary to imply different states of the same image, for example, hover state, selected state. Often sprites are uploaded into a picture server in a desired format, for example as a transparent Portable Networks Graphic (PNG). Some programming languages allow the creation of sophisticated interactive movies and allow a user to interact with the animation by manipulating sprites in the movie, triggering changes in the movie by clicking on a sprite, or even by opening a web site in a browser window. The sprite may include user adjustable dynamic visual elements. A computer graphics sprite may be a two-dimensional or three-dimensional image or animation that is integrated into a larger scene.
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