tessellimage(6) XScreenSaver manual tessellimage(6) NAME tessellimage - Converts an image to triangles using Delaunay tessellation. SYNOPSIS tessellimage [--display host:display.screen] [--visual visual] [--window] [--root] [--window-id number] [--delay number] [--duration number] [--dura- tion2 number] [--max-depth number] [--max-resolution pixels] [--no-outline] [--no-fill-screen] [--fps] DESCRIPTION Converts an image to triangles using Delaunay tessellation, and animates the result at various depths. More triangles are allocated to visually com- plex parts of the image. This is accomplished by first computing the first derivative of the image: the distance between each pixel and its neighbors. Then the Delaunay control points are chosen by selecting those pixels whose distance value is above a certain threshold: those are the pixels that have the largest change in color/brightness. OPTIONS --visual visual Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual. --window Draw on a newly-created window. This is the default. --root Draw on the root window. --window-id number Draw on the specified window. --delay number Per-frame delay, in microseconds. Default: 30000 (0.03 seconds). --duration number Length of time until loading a new image. Default: 2 minutes. --duration2 number Length of time until increasing or decreasing the triangulation depth. Default: 0.4 seconds. --max-depth number The maximum number of triangles to render. Default: 40000. --max-resolution pixels The size of the loaded image will be constrained to this width or height, to reduce the number of pixels examined. Think of it as an initial low-pass filter. Default 1024. --outline | --no-outline Whether to outline the triangles. --fill-screen | --no-fill-screen Whether to zoom in on the image to completely fill the screen, or to center it. --fps | --no-fps Whether to show a frames-per-second display at the bottom of the screen. ENVIRONMENT DISPLAY to get the default host and display number. XENVIRONMENT to get the name of a resource file that overrides the global re- sources stored in the RESOURCE_MANAGER property. XSCREENSAVER_WINDOW The window ID to use with --root. SEE ALSO X(1), xscreensaver(1) COPYRIGHT Copyright (C) 2014-2018 by Jamie Zawinski. Permission to use, copy, mod- ify, distribute, and sell this software and its documentation for any pur- pose is hereby granted without fee, provided that the above copyright no- tice appear in all copies and that both that copyright notice and this per- mission notice appear in supporting documentation. No representations are made about the suitability of this software for any purpose. It is pro- vided "as is" without express or implied warranty. AUTHOR Jamie Zawinski. X Version 11 6.15 (30-Mar-2026) tessellimage(6)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | SEE ALSO | COPYRIGHT | AUTHOR
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