NAME

       tessellimage - Converts an image to triangles using Delaunay tessellation.

SYNOPSIS

       tessellimage [-display host:display.screen] [-visual visual] [-window] [-root] [-delay number] [-duration
       number] [-duration2 number] [-max-depth number] [-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 complex 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.

       -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.

       -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  resources  stored  in  the
               RESOURCE_MANAGER property.

SEE ALSO

       X(1), xscreensaver(1)

COPYRIGHT

       Copyright  © 2014 by Jamie Zawinski.  Permission to use, copy, modify, distribute, and sell this software
       and its documentation for any purpose is hereby granted without fee, provided that  the  above  copyright
       notice  appear  in  all  copies  and that both that copyright notice and this permission notice appear in
       supporting documentation.  No representations are made about the suitability of  this  software  for  any
       purpose.  It is provided "as is" without express or implied warranty.

AUTHOR

       Jamie Zawinski.

X Version 11                                   5.36 (10-Oct-2016)                               tessellimage(6x)