In addition, the book covers subjects that are absent from Jim Blinn's list. Computer animation introduction Animation has many faces, as it covers any change of appearance or any visual effect that is time-based. Frame animation is animation inside a rectangular frame. The frame is typically rectangular and non-transparent. Sprite animation, in its simplest form, is a two-dimensional graphic object that moves across the display.
Sprites often can have transparent areas.
By using a mask or a transparent colour, sprites are not restricted to rectangular shapes. That said, nearly all sprite animation libraries and toolkits allow some form of internal animation. That is, in addition to moving a sprite around, the library allows you to change the appearance of the sprite, usually by attaching a new image to the sprite. We think that by combining both products, you can achieve very mobile sprites, or synchronized cartoon-like animations. In games and in many multimedia applications, the animations should adapt themselves to the environment, the program status or the user activity.