1 .TH XScreenSaver 1 "" "X Version 11"
3 tessellimage - Converts an image to triangles using Delaunay tessellation.
6 [\-display \fIhost:display.screen\fP]
7 [\-visual \fIvisual\fP]
10 [\-delay \fInumber\fP]
11 [\-duration \fInumber\fP]
12 [\-duration2 \fInumber\fP]
13 [\-max-depth \fInumber\fP]
18 Converts an image to triangles using Delaunay tessellation, and animates
19 the result at various depths. More triangles are allocated to visually
20 complex parts of the image. This is accomplished by first computing the
21 first derivative of the image: the distance between each pixel and its
22 neighbors. Then the Delaunay control points are chosen by selecting those
23 pixels whose distance value is above a certain threshold: those are the
24 pixels that have the largest change in color/brightness.
27 .B \-visual \fIvisual\fP
28 Specify which visual to use. Legal values are the name of a visual class,
29 or the id number (decimal or hex) of a specific visual.
32 Draw on a newly-created window. This is the default.
35 Draw on the root window.
37 .B \-delay \fInumber\fP
38 Per-frame delay, in microseconds. Default: 30000 (0.03 seconds).
40 .B \-duration \fInumber\fP
41 Length of time until loading a new image. Default: 2 minutes.
43 .B \-duration2 \fInumber\fP
44 Length of time until increasing or decreasing the triangulation depth.
47 .B \-max-depth \fInumber\fP
48 The maximum number of triangles to render. Default: 40000.
50 .B \-outline | \-no-outline
51 Whether to outline the triangles.
53 .B \-fill-screen | \-no-fill-screen
54 Whether to zoom in on the image to completely fill the screen,
58 Whether to show a frames-per-second display at the bottom of the screen.
63 to get the default host and display number.
66 to get the name of a resource file that overrides the global resources
67 stored in the RESOURCE_MANAGER property.
72 Copyright \(co 2014 by Jamie Zawinski. Permission to use, copy, modify,
73 distribute, and sell this software and its documentation for any purpose is
74 hereby granted without fee, provided that the above copyright notice appear
75 in all copies and that both that copyright notice and this permission notice
76 appear in supporting documentation. No representations are made about the
77 suitability of this software for any purpose. It is provided "as is" without
78 express or implied warranty.