X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=hacks%2Ftessellimage.man;fp=hacks%2Ftessellimage.man;h=b2d6d55a6875ccabf6987308f181b957dd458c8c;hp=0000000000000000000000000000000000000000;hb=8afc01a67be4fbf3f1cc0fce9adf01b5289a21c6;hpb=3f1091236d800c43a3124c44c7da54e53f205b13

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+.TH XScreenSaver 1 "" "X Version 11"
+.SH NAME
+tessellimage - Converts an image to triangles using Delaunay tessellation.
+.SH SYNOPSIS
+.B tessellimage
+[\-display \fIhost:display.screen\fP]
+[\-visual \fIvisual\fP]
+[\-window]
+[\-root]
+[\-delay \fInumber\fP]
+[\-duration \fInumber\fP]
+[\-duration2 \fInumber\fP]
+[\-max-depth \fInumber\fP]
+[\-no-outline]
+[\-no-fill-screen]
+[\-fps]
+.SH 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. 
+.SH OPTIONS
+.TP 8
+.B \-visual \fIvisual\fP
+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.
+.TP 8
+.B \-window
+Draw on a newly-created window.  This is the default.
+.TP 8
+.B \-root
+Draw on the root window.
+.TP 8
+.B \-delay \fInumber\fP
+Per-frame delay, in microseconds.  Default: 30000 (0.03 seconds).
+.TP 8
+.B \-duration \fInumber\fP
+Length of time until loading a new image. Default: 2 minutes.
+.TP 8
+.B \-duration2 \fInumber\fP
+Length of time until increasing or decreasing the triangulation depth.
+Default: 0.4 seconds.
+.TP 8
+.B \-max-depth \fInumber\fP
+The maximum number of triangles to render.  Default: 40000.
+.TP 8
+.B \-outline | \-no-outline
+Whether to outline the triangles.
+.TP 8
+.B \-fill-screen | \-no-fill-screen
+Whether to zoom in on the image to completely fill the screen,
+or to center it.
+.TP 8
+.B \-fps | \-no-fps
+Whether to show a frames-per-second display at the bottom of the screen.
+.SH ENVIRONMENT
+.PP
+.TP 8
+.B DISPLAY
+to get the default host and display number.
+.TP 8
+.B XENVIRONMENT
+to get the name of a resource file that overrides the global resources
+stored in the RESOURCE_MANAGER property.
+.SH SEE ALSO
+.BR X (1),
+.BR xscreensaver (1)
+.SH COPYRIGHT
+Copyright \(co 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.
+.SH AUTHOR
+Jamie Zawinski.