3D Image Files. ASCII formatted 3D positional chart with additional graphical data for 3D environments (objects) meshes.
The X file extension is related to a very old program called Application Visualisation Software (AVS) that was sold by Stardent in early 90s. An *.x file is bitmap image crated in AVS. The AVS image format is pretty straightforward. It consists of an 8 byte header followed by a,r,g,b per pixel, ordered top to bottom, left to right. (a == alpha, r == red, g = reen, b == blue) Each colour/alpha component is 1 unsigned byte. The header simply consists of the width and height of the image, each as 4 byte unsigned integers. Note the format assumes a byte ordering as per SGI/Macintosh/Motorola processors, if reading an AVS image from a machine with the opposite byte ordering then the appropriate byte swapping is required.
Display or import an image to or from an X11 server.
Source code written in the Lex programming language (a standard lexical analyzer for Unix). May be processed with the lex utility included with most Unix distributions to generate a C program.
Text file with parameters for X-file animations
The X file extension is used to refer to compression algorithm data files used in the SuperDisk computer program. X files enable compression and reduced file size by replacing repetitive and redundant text data with a much smaller code. X files can be accessed and edited with the appropriate software.