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author | Simon Rettberg | 2018-10-16 10:08:48 +0200 |
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committer | Simon Rettberg | 2018-10-16 10:08:48 +0200 |
commit | d3a98cf6cbc3bd0b9efc570f58e8812c03931c18 (patch) | |
tree | cbddf8e50f35a9c6e878a5bfe3c6d625d99e12ba /hacks/config/tessellimage.xml | |
download | xscreensaver-d3a98cf6cbc3bd0b9efc570f58e8812c03931c18.tar.gz xscreensaver-d3a98cf6cbc3bd0b9efc570f58e8812c03931c18.tar.xz xscreensaver-d3a98cf6cbc3bd0b9efc570f58e8812c03931c18.zip |
Original 5.40
Diffstat (limited to 'hacks/config/tessellimage.xml')
-rw-r--r-- | hacks/config/tessellimage.xml | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/hacks/config/tessellimage.xml b/hacks/config/tessellimage.xml new file mode 100644 index 0000000..f6e1a3c --- /dev/null +++ b/hacks/config/tessellimage.xml @@ -0,0 +1,66 @@ +<?xml version="1.0" encoding="ISO-8859-1"?> + +<screensaver name="tessellimage" _label="Tessellimage"> + + <command arg="-root"/> + + <video href="https://www.youtube.com/watch?v=JNgybysnYU8"/> + + <hgroup> + <vgroup> + <number id="delay" type="slider" arg="-delay %" + _label="Frame rate" _low-label="Low" _high-label="High" + low="0" high="100000" default="30000" + convert="invert"/> + + <number id="duration2" type="slider" arg="-duration2 %" + _label="Speed" _low-label="0.1 second" _high-label="4 seconds" + low="0.1" high="4.0" default="0.4"/> + + <number id="duration" type="slider" arg="-duration %" + _label="Duration" _low-label="10 seconds" _high-label="10 minutes" + low="10" high="600" default="120"/> + + <number id="depth" type="slider" arg="-max-depth %" + _label="Complexity" _low-label="Shallow" _high-label="Deep" + low="1000" high="100000" default="30000"/> + </vgroup> + + <vgroup> + + <select id="mode"> + <option id="random" _label="Delaunay or voronoi"/> + <option _label="Delaunay" arg-set="-mode delaunay"/> + <option _label="Voronoi" arg-set="-mode voronoi"/> + </select> + + <xscreensaver-image /> + + <boolean id="fill" _label="Fill screen" arg-unset="-no-fill-screen"/> + <boolean id="outline" _label="Outline triangles" arg-unset="-no-outline"/> + <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/> + + <xscreensaver-updater /> + </vgroup> + </hgroup> + + <_description> +Converts an image to triangles using Delaunay tessellation, or to +polygons using Voronoi tesselation, and animates the result at +various depths. + +More polygons 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 (which is +essentially edge detection or embossing). Then the Delaunay or +Voronoi 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. + +https://en.wikipedia.org/wiki/Delaunay_triangulation +https://en.wikipedia.org/wiki/Voronoi_diagram +https://en.wikipedia.org/wiki/Tessellation + +Written by Jamie Zawinski; 2014. + </_description> +</screensaver> |