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14.6 Animated (video) texture mapping

Many recent computer games use animated texture maps, for example, to map an MPEG video clip onto the face of a cube. 3D accelerator hardware is also starting to support video textures. Drawing animated textures is at present problematic in Java 3D because, although you can draw into an ImageComponent and use it as a texture image, the ImageComponent is copied into texture memory. Java 3D 1.2 should go some way to addressing this issue, but performance problems are likely to remain an issue for some time.


For very simple texture animations (a few frames), each frame of the animation can be pasted (either at runtime or as a preprocess) into a composite texture image. At runtime the texture coordinates of vertices can be modified to cycle through the various frames of the animation.