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Diffstat (limited to 'hacks/config/sphereeversion.xml')
| -rw-r--r-- | hacks/config/sphereeversion.xml | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/hacks/config/sphereeversion.xml b/hacks/config/sphereeversion.xml new file mode 100644 index 0000000..365db9b --- /dev/null +++ b/hacks/config/sphereeversion.xml @@ -0,0 +1,98 @@ +<?xml version="1.0" encoding="UTF-8"?> + +<screensaver name="sphereeversion" _label="Sphere Eversion" gl="yes"> + + <video href="https://www.youtube.com/watch?v=CbmIggJ5GdA"/> + + <command arg="-root"/> + + <hgroup> + + <vgroup> + <number id="deform-speed" type="slider" arg="-deformation-speed %" + _label="Deformation speed" + _low-label="1.0" _high-label="100.0" + low="1.0" high="100.0" default="10.0"/> + + <select id="surface-order"> + <option id="random" _label="Random surface order"/> + <option id="2" _label="2" arg-set="-surface-order 2"/> + <option id="3" _label="3" arg-set="-surface-order 3"/> + <option id="4" _label="4" arg-set="-surface-order 4"/> + <option id="5" _label="5" arg-set="-surface-order 5"/> + </select> + </vgroup> + + <vgroup> + <select id="display-mode"> + <option id="random" _label="Random surface"/> + <option id="surface" _label="Solid surface" arg-set="-mode surface"/> + <option id="transparent" _label="Transparent surface" arg-set="-mode transparent"/> + </select> + + <select id="appearance"> + <option id="random" _label="Random pattern"/> + <option id="solid" _label="Solid object" arg-set="-appearance solid"/> + <option id="bands" _label="Parallel bands" arg-set="-appearance parallel-bands"/> + <option id="bands" _label="Meridian bands" arg-set="-appearance meridian-bands"/> + </select> + + <select id="graticule"> + <option id="random" _label="Random graticule"/> + <option id="bands" _label="With graticule" arg-set="-graticule on"/> + <option id="bands" _label="Without graticule" arg-set="-graticule off"/> + </select> + + <select id="colors"> + <option id="random" _label="Random coloration"/> + <option id="twosided" _label="Two-sided" arg-set="-colors two-sided"/> + <option id="rainbow" _label="Parallel colors" arg-set="-colors parallel"/> + <option id="rainbow" _label="Meridian colors" arg-set="-colors meridian"/> + </select> + + <select id="projection"> + <option id="random" _label="Random Projection"/> + <option id="perspective" _label="Perspective" arg-set="-projection perspective"/> + <option id="orthographic" _label="Orthographic" arg-set="-projection orthographic"/> + </select> + </vgroup> + + <vgroup> + <number id="speed-x" type="slider" arg="-speed-x %" + _label="X rotation speed" + _low-label="-4.0" _high-label="4.0" + low="-4.0" high="4.0" default="0.0"/> + + <number id="speed-y" type="slider" arg="-speed-y %" + _label="Y rotation speed" + _low-label="-4.0" _high-label="4.0" + low="-4.0" high="4.0" default="0.0"/> + + <number id="speed-z" type="slider" arg="-speed-z %" + _label="Z rotation speed" + _low-label="-4.0" _high-label="4.0" + low="-4.0" high="4.0" default="0.0"/> + </vgroup> + + <vgroup> + <xscreensaver-updater /> + <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/> + </vgroup> + + </hgroup> + + <_description> +Turns a sphere inside out: a smooth deformation (homotopy). During the +eversion, the deformed sphere is allowed to intersect itself transversally, +however, no creases or pinch points occur. + +Inspired by the following paper: Adam Bednorz, Witold Bednorz: +"Analytic sphere eversion using ruled surfaces", Differential Geometry +and its Applications 64:59-79, 2019. + +https://en.wikipedia.org/wiki/Sphere_eversion +https://mathworld.wolfram.com/SphereEversion.html + +Written by Carsten Steger; 2020. + </_description> +</screensaver> |