1 "#error Do not run app-defaults files through xrdb!",
2 "#error That does not do what you might expect.",
3 "#error Put this file in /usr/lib/X11/app-defaults/XScreenSaver instead.",
20 "*captureStderr: True",
21 "*overlayTextForeground: #FFFF00",
22 "*overlayTextBackground: #000000",
23 "*overlayStderr: True",
24 "*font: *-medium-r-*-140-*-m-*",
25 "*sgiSaverExtension: True",
26 "*mitSaverExtension: False",
27 "*xidleExtension: True",
28 "*procInterrupts: True",
29 "*demoCommand: xscreensaver-demo",
30 "*prefsCommand: xscreensaver-demo -prefs",
31 "*helpURL: http://www.jwz.org/xscreensaver/man.html",
32 "*loadURL: netscape -remote 'openURL(%s)' || netscape '%s'",
33 "*manualCommand: xterm +sb -fg black -bg gray75 -T '%s manual' \
34 -e /bin/sh -c 'man \"%s\" || read foo'",
35 "*dateFormat: %d-%b-%y (%a); %I:%M %p",
36 "*installColormap: True",
38 \"Qix (solid)\" qix -root -solid -delay 0 -segments 100 \\n\
39 \"Qix (transparent)\" qix -root -count 4 -solid -transparent \\n\
40 \"Qix (linear)\" qix -root -count 5 -solid -transparent \
41 -linear -segments 250 -size 100 \\n\
42 - mono: \"Qix (xor)\" qix -root -linear -count 5 -size 200 \
43 -spread 30 -segments 75 -solid -xor \\n\
45 \"Attraction (balls)\" attraction -root -mode balls \\n\
46 \"Attraction (lines)\" attraction -root -mode lines -points 3 \
48 - \"Attraction (poly)\" attraction -root -mode polygons \\n\
49 \"Attraction (splines)\" attraction -root -mode splines -segments \
51 \"Attraction (orbital)\" attraction -root -mode lines -radius 300 \
52 -orbit -vmult 0.5 \\n\
58 rorschach -root -offset 7 \\n\
62 slidescreen -root \\n\
63 decayscreen -root \\n\
65 blitspin -root -grab \\n\
69 \"Ripples (oily)\" ripples -root -oily -light 2 \\n\
70 \"Ripples (stir)\" ripples -root -oily -light 2 -stir \\n\
71 \"Ripples (desktop)\" ripples -root -water -light 6 \\n\
87 \"Grav (trails)\" grav -root -trail -decay \\n\
102 goop -root -max-velocity 0.5 -elasticity \
105 \"Starfish (blob)\" starfish -root -blob \\n\
108 coral -root -delay 0 \\n\
110 triangle -root -delay 1 \\n\
117 kaleidescope -root \\n\
119 xlyap -root -randomize \\n\
123 interference -root \\n\
124 truchet -root -randomize \\n\
130 \"RD-Bomb (mobile)\" rd-bomb -root -speed 1 -size 0.1 \\n\
139 \"Wander (spots)\" wander -root -advance 0 -size 10 -circles \
140 True -length 10000 -reset 100000 \\n\
144 petri -root -size 2 -count 20 \\n\
145 \"Petri 2\" petri -root -minlifespeed 0.02 \
146 -maxlifespeed 0.03 -minlifespan 1 \
147 -maxlifespan 1 -instantdeathchan 0 \
148 -minorchan 0 -anychan 0.3 \\n\
154 xspirograph -root \\n\
156 - \"NerveRot (dense)\" nerverot -root -count 1000 \\n\
157 - \"NerveRot (thick)\" nerverot -root -count 100 -line-width 4 \
158 -max-nerve-radius 0.8 -nervousness 0.5 -db \\n\
160 - \"Zoom (Fatbits)\" zoom -root \\n\
161 \"Zoom (Lenses)\" zoom -root -lenses \\n\
163 - \"RotZoomer (mobile)\" rotzoomer -root -move \\n\
164 whirlwindwarp -root \\n\
165 color: bubbles -root \\n\
166 default-n: webcollage -root \\n\
167 default-n: \"WebCollage (whacked)\" \
168 webcollage -root -filter \
169 'vidwhacker -stdin -stdout' \\n\
170 - default-n: vidwhacker -root \\n\
173 GL: \"Gears (planetary)\" gears -root -planetary \\n\
174 GL: superquadrics -root \\n\
175 GL: morph3d -root \\n\
177 GL: moebius -root \\n\
178 GL: stairs -root \\n\
180 GL: sproingies -root \\n\
182 GL: atlantis -root \\n\
183 GL: lament -root \\n\
184 GL: bubble3d -root \\n\
185 GL: glplanet -root \\n\
186 GL: pulsar -root \\n\
187 - GL: \"Pulsar (textures)\" \
188 pulsar -root -texture -mipmap \
189 -texture_quality -light -fog \\n\
190 GL: extrusion -root \\n\
191 GL: sierpinski3d -root \\n\
193 GL: stonerview -root \\n\
194 GL: starwars -root \\n\
195 GL: gltext -root \\n\
196 GL: \"GLText (clock)\" gltext -text \"%A%n%d %b %Y%n%r\" -root \\n\
197 GL: \"Molecule\" molecule -root \\n\
198 GL: \"Molecule (lumpy)\" molecule -root -no-bonds -no-labels \\n\
199 GL: dangerball -root \\n\
201 - xdaliclock -root -builtin3 -cycle \\n\
202 - default-n: xearth -nofork -nostars -ncolors 50 \
203 -night 3 -wait 0 -timewarp 400.0 -pos \
205 - ssystem -fullscreen :32 \\n\
206 - xmountains -b -M -Z 0 -r 1 \\n\
207 - \"XMountains (top)\" xmountains -b -M -Z 0 -r 1 -m \\n\
208 - xaos -root -autopilot -incoloring -1 \
209 -nogui -outcoloring -1 \\n\
210 - xfishtank -d -s \\n\
215 "XScreenSaver.pointerPollTime: 5",
216 "XScreenSaver.initialDelay: 0",
217 "XScreenSaver.windowCreationTimeout: 30",
218 "XScreenSaver.bourneShell: /bin/sh",
219 "*Dialog.headingFont: *-times-bold-r-*-*-*-180-*-*-*-iso8859-1",
220 "*Dialog.bodyFont: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
221 "*Dialog.labelFont: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
222 "*Dialog.buttonFont: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
223 "*Dialog.dateFont: *-courier-medium-r-*-*-*-80-*-*-*-iso8859-1",
224 "*Dialog.foreground: #000000",
225 "*Dialog.background: #BFBFBF",
226 "*Dialog.Button.foreground: #000000",
227 "*Dialog.Button.background: #D0D0D0",
228 "*Dialog.text.foreground: #000000",
229 "*Dialog.text.background: #FFFFFF",
230 "*passwd.thermometer.foreground: #FF0000",
231 "*passwd.thermometer.background: #FFFFFF",
232 "*Dialog.topShadowColor: #E7E7E7",
233 "*Dialog.bottomShadowColor: #737373",
234 "*Dialog.logo.width: 210",
235 "*Dialog.logo.height: 210",
236 "*Dialog.internalBorderWidth: 30",
237 "*Dialog.borderWidth: 1",
238 "*Dialog.shadowThickness: 4",
239 "*passwd.heading.label: XScreenSaver %s",
240 "*passwd.body.label: This display is locked.",
241 "*passwd.user.label: User:",
242 "*passwd.passwd.label: Password:",
243 "*passwd.passwdFont: *-courier-medium-r-*-*-*-140-*-*-*-iso8859-1",
244 "*passwd.thermometer.width: 8",
245 "*splash.heading.label: XScreenSaver %s",
246 "*splash.body.label: Copyright © 1991-2001 by",
247 "*splash.body2.label: Jamie Zawinski <jwz@jwz.org>",
248 "*splash.demo.label: Demo",
249 "*splash.prefs.label: Prefs",
250 "*splash.help.label: Help",
251 "*fontList: *-helvetica-medium-r-*-*-*-120-*-*-*-iso8859-1",
252 "*demoDialog*label1.fontList: *-helvetica-medium-r-*-*-*-140-*-*-*-iso8859-1",
253 "*cmdText.fontList: *-courier-medium-r-*-*-*-120-*-*-*-iso8859-1",
254 "*label0.fontList: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
255 "XScreenSaver*doc.fontList: *-helvetica-medium-r-*-*-*-100-*-*-*-iso8859-1",
256 "*foreground: #000000",
257 "*background: #C0C0C0",
258 "*XmTextField.foreground: #000000",
259 "*XmTextField.background: #FFFFFF",
260 "*list.foreground: #000000",
261 "*list.background: #FFFFFF",
262 "*ApplicationShell.title: XScreenSaver",
263 "*warning.title: XScreenSaver",
264 "*warning_popup.title: XScreenSaver",
265 "*allowShellResize: True",
266 "*autoUnmanage: False",
267 "*menubar*file.labelString: File",
268 "*menubar*file.mnemonic: F",
269 "*file.blank.labelString: Blank Screen Now",
270 "*file.blank.mnemonic: B",
271 "*file.lock.labelString: Lock Screen Now",
272 "*file.lock.mnemonic: L",
273 "*file.kill.labelString: Kill Daemon",
274 "*file.kill.mnemonic: K",
275 "*file.restart.labelString: Restart Daemon",
276 "*file.restart.mnemonic: R",
277 "*file.exit.labelString: Exit",
278 "*file.exit.mnemonic: E",
279 "*menubar*edit.labelString: Edit",
280 "*menubar*edit.mnemonic: E",
281 "*edit.cut.labelString: Cut",
282 "*edit.cut.mnemonic: u",
283 "*edit.copy.labelString: Copy",
284 "*edit.copy.mnemonic: C",
285 "*edit.paste.labelString: Paste",
286 "*edit.paste.mnemonic: P",
287 "*menubar*help.labelString: Help",
288 "*menubar*help.mnemonic: H",
289 "*help.about.labelString: About...",
290 "*help.about.mnemonic: A",
291 "*help.docMenu.labelString: Documentation...",
292 "*help.docMenu.mnemonic: D",
293 "*demoTab.marginWidth: 10",
294 "*optionsTab.marginWidth: 10",
295 "*XmScrolledWindow.topOffset: 10",
296 "*XmScrolledWindow.leftOffset: 10",
297 "*demoTab.topOffset: 4",
298 "*form1.bottomOffset: 10",
299 "*form3.leftOffset: 10",
300 "*form3.rightOffset: 10",
301 "*frame.topOffset: 10",
302 "*frame.bottomOffset: 10",
303 "*enabled.topOffset: 10",
304 "*visLabel.topOffset: 10",
305 "*combo.topOffset: 10",
306 "*form4.bottomOffset: 4",
307 "*hr.bottomOffset: 4",
308 "*XmComboBox.marginWidth: 0",
309 "*XmComboBox.marginHeight: 0",
310 "*demo.marginWidth: 30",
311 "*demo.marginHeight: 4",
312 "*man.marginWidth: 10",
313 "*man.marginHeight: 4",
314 "*down.leftOffset: 40",
315 "*down.marginWidth: 4",
316 "*down.marginHeight: 4",
317 "*up.marginWidth: 4",
318 "*up.marginHeight: 4",
319 "*frame.traversalOn: False",
320 "*list.automaticSelection: True",
321 "*list.visibleItemCount: 20",
323 "*combo.columns: 11",
324 "*demoTab.labelString: Graphics Demos",
325 "*optionsTab.labelString: Screensaver Options",
326 "*down.labelString: \\\\/ ",
327 "*up.labelString: /\\\\ ",
328 "*frameLabel.labelString: ",
329 "*cmdLabel.labelString: Command Line:",
330 "*cmdLabel.alignment: ALIGNMENT_BEGINNING",
331 "*enabled.labelString: Enabled",
332 "*visLabel.labelString: Visual:",
333 "*visLabel.alignment: ALIGNMENT_END",
334 "*visLabel.leftOffset: 20",
335 "*demo.labelString: Demo",
336 "*man.labelString: Documentation...",
337 "*done.labelString: Quit",
338 "*preferencesLabel.labelString: XScreenSaver Parameters",
339 "*timeoutLabel.labelString: Saver Timeout",
340 "*cycleLabel.labelString: Cycle Timeout",
341 "*fadeSecondsLabel.labelString: Fade Duration",
342 "*fadeTicksLabel.labelString: Fade Ticks",
343 "*lockLabel.labelString: Lock Timeout",
344 "*passwdLabel.labelString: Password Timeout",
345 "*preferencesForm*XmTextField.columns: 8",
346 "*verboseToggle.labelString: Verbose",
347 "*cmapToggle.labelString: Install Colormap",
348 "*fadeToggle.labelString: Fade Colormap",
349 "*unfadeToggle.labelString: Unfade Colormap",
350 "*lockToggle.labelString: Require Password",
351 "*OK.marginWidth: 30",
352 "*OK.marginHeight: 4",
353 "*OK.leftOffset: 10",
354 "*OK.bottomOffset: 10",
355 "*Cancel.marginWidth: 30",
356 "*Cancel.marginHeight: 4",
357 "*Cancel.rightOffset: 10",
358 "*Cancel.bottomOffset: 10",
359 "*hacks.documentation.isInstalled: True",
360 "*hacks.qix.documentation: \
361 This is the swiss army chainsaw of qix programs. It bounces a series \
362 of line segments around the screen, and uses variations on this basic \
363 motion pattern to produce all sorts of different presentations: line \
364 segments, filled polygons, overlapping translucent areas... Written \
366 "*hacks.attraction.documentation: \
367 Like qix, this uses a simple simple motion model to generate many \
368 different display modes. The control points attract each other up to \
369 a certain distance, and then begin to repel each other. The \
370 attraction/repulsion is proportional to the distance between any two \
371 particles, similar to the strong and weak nuclear forces. \
373 One of the most interesting ways to watch this hack is simply as \
374 bouncing balls, because their motions and interactions with each \
375 other are so odd. Sometimes two balls will get into a tight orbit \
376 around each other, to be interrupted later by a third, or by the edge \
377 of the screen. It looks quite chaotic. \
379 Written by Jamie Zawinski, based on Lisp code by John Pezaris.",
380 "*hacks.pyro.documentation: \
381 Pyro draws exploding fireworks. Blah blah blah. Written by Jamie \
383 "*hacks.helix.documentation: \
384 This repeatedly generates spirally string-art-ish patterns. Written \
386 "*hacks.pedal.documentation: \
387 This is sort of a combination spirograph/string-art. It generates a \
388 large, complex polygon, and lets the X server do the bulk of the work \
389 by giving it an even/odd winding rule. Written by Dale Moore, based \
390 on some ancient PDP-11 code.",
391 "*hacks.rorschach.documentation: \
392 This generates random inkblot patterns. The algorithm is deceptively \
393 simple for how well it works; it merely walks a dot around the screen \
394 randomly, and then reflects the image horizontally, vertically, or \
395 both. Any deep-seated neurotic tendencies which this program reveals \
396 are your own problem. Written by Jamie Zawinski.",
397 "*hacks.hopalong.documentation: \
398 This draws lacy fractal patterns, based on iteration in the imaginary \
399 plane, from a 1986 Scientific American article. Mostly written by \
401 "*hacks.greynetic.documentation: \
402 This draws random colored and stippled rectangles. Written by Jamie \
404 "*hacks.imsmap.name: IMSmap",
405 "*hacks.imsmap.documentation: \
406 This generates random cloud-like patterns. It looks quite different \
407 in monochrome and color. The basic idea is to take four points on \
408 the edge of the image, and assign each a random ``elevation''. Then \
409 find the point between them, and give it a value which is the average \
410 of the other four, plus some small random offset. Then coloration is \
411 done based on elevation. \
413 The color selection is done by binding the elevation to either hue, \
414 saturation, or brightness, and assigning random values to the others. \
415 The ``brightness'' mode tends to yield cloudlike patterns, and the \
416 others tend to generate images that look like heat-maps or CAT-scans. \
417 Written by Juergen Nickelsen and Jamie Zawinski.",
418 "*hacks.slidescreen.name: SlideScreen",
419 "*hacks.slidescreen.documentation: \
420 This grabs an image of whatever is on your screen, divides it into a \
421 grid, and then randomly shuffles the squares around as if it was one \
422 of those annoying ``16-puzzle'' games, where there is a grid of \
423 squares, one of which is missing. I hate trying to solve those \
424 puzzles, but watching one permute itself is more amusing. Written by \
426 "*hacks.decayscreen.name: DecayScreen",
427 "*hacks.decayscreen.documentation: \
428 This grabs an image of whatever is on your screen, and makes it melt. \
429 You've no doubt seen this effect before, but no screensaver would \
430 really be complete without it. It works best if there's something \
431 colorful visible. Warning, if the effect continues after the screen \
432 saver is off, seek medical attention. Written by David Wald and \
435 A number of these screenhacks have the ability to take an image of \
436 your desktop and manipulate it in some way. On SGI systems, these \
437 programs are able to (at random) pull their source image from the \
438 system's video input instead! This works nicely if you leave some \
439 some random television station plugged in.",
440 "*hacks.jigsaw.documentation: \
441 This grabs a screen image, carves it up into a jigsaw puzzle, \
442 shuffles it, and then solves the puzzle. This works especially well \
443 when you feed it an external video signal instead of letting it grab \
444 the screen image (actually, I guess this is generally true...) When \
445 it is grabbing a video image, it is sometimes pretty hard to guess \
446 what the image is going to look like once the puzzle is solved. \
447 Written by Jamie Zawinski.",
448 "*hacks.blitspin.name: BlitSpin",
449 "*hacks.blitspin.documentation: \
450 The ``blitspin'' hack repeatedly rotates a bitmap by 90 degrees by \
451 using logical operations: the bitmap is divided into quadrants, and \
452 the quadrants are shifted clockwise. Then the same thing is done \
453 again with progressively smaller quadrants, except that all \
454 sub-quadrants of a given size are rotated in parallel. Written by \
455 Jamie Zawinski based on some cool SmallTalk code seen in in Byte \
458 As you watch it, the image appears to dissolve into static and then \
459 reconstitute itself, but rotated. You can provide the image to use, \
460 as an XBM or XPM file, or tell it to grab a screen image and rotate \
462 "*hacks.slip.documentation: \
463 This program throws some random bits on the screen, then sucks them \
464 through a jet engine and spews them out the other side. To avoid \
465 turning the image completely to mush, every now and then it will and \
466 then it interjects some splashes of color into the scene, or go into \
467 a spin cycle, or stretch the image like taffy, or (this is my \
468 addition) grab an image of your current desktop to chew on. \
469 Originally written by Scott Draves; whacked on by Jamie Zawinski.",
470 "*hacks.distort.documentation: \
471 This hack grabs an image of the screen, and then lets a transparent \
472 lens wander around the screen, magnifying whatever is underneath. \
473 Written by Jonas Munsin.",
474 "*hacks.spotlight.documentation: \
475 Draws a spotlight scanning across a black screen, illumnating the \
476 underlying desktop when it passes. Written by Rick Schultz.",
477 "*hacks.hypercube.documentation: \
478 This displays 2D projections of the sequence of 3D objects which are \
479 the projections of the 4D analog to the cube: as a square is composed \
480 of four lines, each touching two others; and a cube is composed of \
481 six squares, each touching four others; a hypercube is composed of \
482 eight cubes, each touching six others. To make it easier to \
483 visualize the rotation, it uses a different color for the edges of \
484 each face. Don't think about it too long, or your brain will melt. \
485 Written by Joe Keane, Fritz Mueller, and Jamie Zawinski.",
486 "*hacks.hyperball.documentation: \
487 Hyperball is to hypercube as dodecahedron is to cube: this displays \
488 a 2D projection of the sequence of 3D objects which are the projections \
489 of the 4D analog to the dodecahedron. Written by Joe Keane.",
490 "*hacks.halo.documentation: \
491 This draws trippy psychedelic circular patterns that hurt to look at. \
492 It can also animate the control-points, but that takes a lot of CPU \
493 and bandwidth. Written by Jamie Zawinski.",
494 "*hacks.maze.documentation: \
495 This is the ancient X maze demo, modified to work with xscreensaver. \
496 It generates a random maze, then solves it with visual feedback. \
497 Originally by Jim Randell; modified by a cast of thousands.",
498 "*hacks.noseguy.documentation: \
499 A little man with a big nose wanders around your screen saying \
500 things. The things which he says can come from a file, or from an \
501 external program like `zippy' or `fortune'. This was extracted from \
502 `xnlock' by Dan Heller. Colorized by Jamie Zawinski.",
503 "*hacks.flame.documentation: \
504 Another iterative fractal generator. Written by Scott Draves.",
505 "*hacks.lmorph.name: LMorph",
506 "*hacks.lmorph.documentation: \
507 This generates random spline-ish line drawings and morphs between \
508 them. Written by Sverre H. Huseby and Glenn T. Lines.",
509 "*hacks.deco.documentation: \
510 This one subdivides and colors rectangles randomly. It looks kind of \
511 like Brady-Bunch-era rec-room wall paneling. (Raven says: ``this \
512 screensaver is ugly enough to peel paint.'') Written by Jamie \
513 Zawinski, inspired by Java code by Michael Bayne.",
514 "*hacks.moire.documentation: \
515 This one draws cool circular interference patterns. Most of the \
516 circles you see aren't explicitly rendered, but show up as a result \
517 of interactions between the other pixels that were drawn. Written by \
518 Jamie Zawinski, inspired by Java code by Michael Bayne. As he \
519 pointed out, the beauty of this one is that the heart of the display \
520 algorithm can be expressed with just a pair of loops and a handful of \
521 arithmetic, giving it a high ``display hack metric''.",
522 "*hacks.moire2.documentation: \
523 Another example of the fun you can have with moire \
524 interference patterns; this hack generates fields of concentric \
525 circles or ovals, and combines the planes with various operations. \
526 The planes are moving independently of one another, causing the \
527 interference lines to ``spray.'' Written by Jamie Zawinski.",
528 "*hacks.lightning.documentation: \
529 This one draws crackling fractal lightning bolts. It's simple, \
530 direct, and to the point. If only it had sound... Written by Keith \
532 "*hacks.strange.documentation: \
533 This draws strange attractors: it's a colorful, \
534 unpredictably-animating field of dots that swoops and twists around. \
535 The motion is very nice. Written by Massimino Pascal.",
536 "*hacks.spiral.documentation: \
537 Moving circular patterns, by Peter Schmitzberger. Moving circular \
538 patterns means moire; interference patterns, of course.",
539 "*hacks.laser.documentation: \
540 Moving radiating lines, that look vaguely like scanning laser beams. \
541 Written by Pascal Pensa. (Frankie say: relax.)",
542 "*hacks.grav.documentation: \
543 This program draws a simple orbital simulation. If you turn on \
544 trails, it looks kind of like a cloud-chamber photograph. Written \
546 "*hacks.drift.documentation: \
547 How could one possibly describe this except as ``drifting recursive \
548 fractal cosmic flames?'' Another fine hack from the Scott Draves \
549 collection of fine hacks.",
550 "*hacks.ifs.name: IFS",
551 "*hacks.ifs.documentation: \
552 This one draws spinning, colliding iterated-function-system images. \
553 Written by Massimino Pascal.",
554 "*hacks.julia.documentation: \
555 This one draws spinning, animating (are you detecting a pattern here \
556 yet?) explorations of the Julia set. You've probably seen static \
557 images of this fractal form before, but it's a lot of fun to watch in \
558 motion as well. One interesting thing is that there is a small \
559 swinging dot passing in front of the image, which indicates the \
560 control point from which the rest of the image was generated. \
561 Written by Sean McCullough.",
562 "*hacks.penrose.documentation: \
563 Draws quasiperiodic tilings; think of the implications on modern \
564 formica technology. Written by Timo Korvola. \
566 In April 1997, Sir Roger Penrose, a British math professor who has \
567 worked with Stephen Hawking on such topics as relativity, black \
568 holes, and whether time has a beginning, filed a \
569 copyright-infringement lawsuit against the Kimberly-Clark \
570 Corporation, which Penrose said copied a pattern he created (a \
571 pattern demonstrating that ``a nonrepeating pattern could exist in \
572 nature'') for its Kleenex quilted toilet paper. Penrose said he \
573 doesn't like litigation but, ``When it comes to the population of \
574 Great Britain being invited by a multinational to wipe their bottoms \
575 on what appears to be the work of a Knight of the Realm, then a last \
576 stand must be taken.'' \
578 As reported by News of the Weird #491, 4-jul-1997.",
579 "*hacks.sierpinski.documentation: \
580 This draws the two-dimensional variant of the recursive Sierpinski \
581 triangle fractal. Written by Desmond Daignault.",
582 "*hacks.braid.documentation: \
583 Draws random color-cycling inter-braided concentric circles. Written \
585 "*hacks.galaxy.documentation: \
586 This draws spinning galaxies, which then collide and scatter their \
587 stars to the, uh, four winds or something. Originally an Amiga \
588 program by Uli Siegmund.",
589 "*hacks.bouboule.documentation: \
590 This draws what looks like a spinning, deforming baloon with \
591 varying-sized spots painted on its invisible surface. Written by \
593 "*hacks.swirl.documentation: \
594 More flowing, swirly patterns. This version is by M. Dobie and R. \
595 Taylor, but you might have seen a Mac program similar to this called \
596 FlowFazer. There is also a cool Java applet of a similar concept",
597 "*hacks.flag.documentation: \
598 This draws a waving colored flag, that undulates its way around the \
599 screen. The trick is the flag can contain arbitrary text and images. \
600 By default, it displays either the current system name and OS \
601 type, or a picture of ``Bob,'' but you can replace the text or the \
602 image with a command-line option. Written by Charles Vidal and Jamie \
604 "*hacks.sphere.documentation: \
605 Another of the classic screenhacks of the distant past, this one \
606 draws shaded spheres in multiple colors. This hack traces its \
607 lineage back to Tom Duff in 1982.",
608 "*hacks.forest.documentation: \
609 This draws fractal trees. Written by Peter Baumung. Everybody loves \
611 "*hacks.lisa.documentation: \
612 This draws Lisajous loops, by Caleb Cullen. Remember that device \
613 they had the Phantom Zone prisoners in during their trial in \
614 Superman? I think that was one of these.",
615 "*hacks.lissie.documentation: \
616 Another Lissajous figure. This one draws the progress of circular \
617 shapes along a path. Written by Alexander Jolk.",
618 "*hacks.goop.documentation: \
619 This draws set of animating, transparent, amoeba-like blobs. The \
620 blobs change shape as they wander around the screen, and they are \
621 translucent, so you can see the lower blobs through the higher ones, \
622 and when one passes over another, their colors merge. Written by \
623 Jamie Zawinski. I got the idea for this from a cool mouse pad I \
624 have, which achieves the same kind of effect in real life by having \
625 several layers plastic with colored oil between them. Written by \
627 "*hacks.starfish.documentation: \
628 This generates a sequence of undulating, throbbing, star-like \
629 patterns which pulsate, rotate, and turn inside out. Another display \
630 mode uses these shapes to lay down a field of colors, which are then \
631 cycled. The motion is very organic. Written by Jamie Zawinski.",
632 "*hacks.munch.documentation: \\n\
639 As reported by HAKMEM, in 1962, Jackson Wright wrote the above PDP-1 \
640 code. That code still lives on in this screenhack, some 35 years \
641 later. The number of lines of enclosing code has increased \
642 substantially, however. This version is by Tim Showalter.",
643 "*hacks.fadeplot.name: FadePlot",
644 "*hacks.fadeplot.documentation: \
645 Draws what looks like a waving ribbon following a sinusoidal path. \
646 Written by Bas van Gaalen and Charles Vidal.",
647 "*hacks.coral.documentation: \
648 Simulates coral growth, albeit somewhat slowly. This image doesn't \
649 really do it justice. Written by Frederick Roeber.",
650 "*hacks.mountain.documentation: \
651 Generates random 3d plots that look vaguely mountainous. Written by \
653 "*hacks.triangle.documentation: \
654 Generates random mountain ranges using iterative subdivision of \
655 triangles. Written by Tobias Gloth.",
656 "*hacks.worm.documentation: \
657 An ancient xlock hack that draws multicolored worms that crawl around \
658 the screen. Written by Brad Taylor, Dave Lemke, Boris Putanec, and \
660 "*hacks.rotor.documentation: \
661 Another ancient xlock demo, this one by Tom Lawrence. It draws a \
662 line segment moving along a complex spiraling curve. I tweaked this \
663 to generate curvier lines, but still frames of it don't look like \
665 "*hacks.ant.documentation: \
666 A cellular automaton that is really a two-dimensional Turing machine: \
667 as the heads (``ants'') walk along the screen, they change pixel \
668 values in their path. Then, as they pass over changed pixels, their \
669 behavior is influenced. Written by David Bagley.",
670 "*hacks.demon.documentation: \
671 A cellular automaton that starts with a random field, and organizes \
672 it into stripes and spirals. Written by David Bagley.",
673 "*hacks.loop.documentation: \
674 This one produces loop-shaped colonies that spawn, age, and \
675 eventually die. Written by David Bagley.",
676 "*hacks.vines.documentation: \
677 This one generates a continuous sequence of small, curvy geometric \
678 patterns. It scatters them around your screen until it fills up, \
679 then it clears the screen and starts over. Written by Tracy Camp and \
681 "*hacks.kaleidescope.documentation: \
682 Another clone of an ancient meme, consisting largely of frenetic \
683 rotational motion of colored lines. This one is by Ron Tapia. The \
684 motion is nice, but I think it needs more solids, or perhaps just \
685 brighter colors. More variations in the rotational speed might help, \
687 "*hacks.xjack.documentation: \
688 This program behaves schizophrenically and makes a lot of typos. \
689 Written by Jamie Zawinski. If you haven't seen Stanley Kubrick's \
690 masterpiece, ``The Shining,'' you won't get it. Those who have \
691 describe this hack as ``inspired.''",
692 "*hacks.xlyap.documentation: \
693 This generates pretty fractal pictures by doing funky math involving \
694 the ``Lyapunov exponent.'' It has a cool interactive mode, too. \
695 Written by Ron Record.",
696 "*hacks.cynosure.documentation: \
697 A hack similar to `greynetic', but less frenetic. The first \
698 implementation was by Stephen Linhart; then Ozymandias G. Desiderata \
699 wrote a Java applet clone. That clone was discovered by Jamie \
700 Zawinski, and ported to C for inclusion here.",
701 "*hacks.flow.documentation: \
702 Another series of strange attractors: a flowing series of points, \
703 making strange rotational shapes. Written by Jeff Butterworth.",
704 "*hacks.epicycle.documentation: \
705 This program draws the path traced out by a point on the edge of a \
706 circle. That circle rotates around a point on the rim of another \
707 circle, and so on, several times. These were the basis for the \
708 pre-heliocentric model of planetary motion. Written by James \
710 "*hacks.interference.documentation: \
711 Another color-field hack, this one works by computing decaying \
712 sinusoidal waves, and allowing them to interfere with each other as \
713 their origins move. Written by Hannu Mallat.",
714 "*hacks.truchet.documentation: \
715 This draws line- and arc-based Truchet patterns that tile the screen. \
716 Written by Adrian Likins.",
717 "*hacks.bsod.name: BSOD",
718 "*hacks.bsod.documentation: \
719 BSOD stands for ``Blue Screen of Death.'' The finest in personal \
720 computer emulation, this hack simulates popular screen savers from a \
721 number of less robust operating systems. Written by Jamie Zawinski.",
722 "*hacks.crystal.documentation: \
723 Moving polygons, similar to a kaleidescope (more like a kaleidescope \
724 than the hack called `kaleid,' actually.) This one by Jouk Jansen.",
725 "*hacks.discrete.documentation: \
726 More ``discrete map'' systems, including new variants of Hopalong and \
727 Julia, and a few others. Written by Tim Auckland.",
728 "*hacks.kumppa.documentation: \
729 Spiraling, spinning, and very, very fast splashes of color rush \
730 toward the screen. Written by Teemu Suutari.",
731 "*hacks.rd-bomb.name: RD-Bomb",
732 "*hacks.rd-bomb.documentation: \
733 Another variation of the `Bomb' program by Scott Draves. This draws \
734 a grid of growing square-like shapes that, once they overtake each \
735 other, react in unpredictable ways. ``RD'' stands for \
736 reaction-diffusion.",
737 "*hacks.sonar.documentation: \
738 This program draws a simulation of a sonar screen. Written by \
739 default, it displays a random assortment of ``bogies'' on the screen, \
740 but if compiled properly, it can ping (pun intended) your local \
741 network, and actually plot the proximity of the other hosts on your \
742 network to you. It would be easy to make it monitor other sources of \
743 data, too. (Processes? Active network connections? CPU usage per \
744 user?) Written by Stephen Martin.",
745 "*hacks.t3d.name: T3D",
746 "*hacks.t3d.documentation: \
747 This draws a working analog clock composed of floating, throbbing \
748 bubbles. Written by Bernd Paysan.",
749 "*hacks.penetrate.documentation: \
750 This hack simulates the classic arcade game Missile Command. Written \
752 "*hacks.deluxe.documentation: \
753 This draws a pulsing sequence of stars, circles, and lines. It would \
754 look better if it was faster, but as far as I can tell, there is no \
755 way to make this be both: fast, and flicker-free. Yet another reason \
756 X sucks. Written by Jamie Zawinski.",
757 "*hacks.compass.documentation: \
758 This draws a compass, with all elements spinning about randomly, for \
759 that ``lost and nauseous'' feeling. Written by Jamie Zawinski.",
760 "*hacks.squiral.documentation: \
761 Draws a set of interacting, square-spiral-producing automata. The \
762 spirals grow outward until they hit something, then they go around \
763 it. Written by Jeff Epler.",
764 "*hacks.xflame.documentation: \
765 Draws a simulation of pulsing fire. It can also take an arbitrary \
766 image and set it on fire too. Written by Carsten Haitzler, hacked on \
768 "*hacks.wander.documentation: \
769 Draws a colorful random-walk, in various forms. Written by Rick \
771 "*hacks.critical.documentation: \
772 Draws a system of self-organizing lines. It starts out as random \
773 squiggles, but after a few iterations, order begins to appear. \
774 Written by Martin Pool.",
775 "*hacks.phosphor.documentation: \
776 Draws a simulation of an old terminal, with large pixels and \
777 long-sustain phosphor. It can run any program as a source of the text \
778 it displays. Written by Jamie Zawinski.",
779 "*hacks.xmatrix.documentation: \
780 A rendition of the text scrolls seen in the movie ``The Matrix.'' \
781 Written by Jamie Zawinski.",
782 "*hacks.petri.documentation: \
783 This simulates colonies of mold growing in a petri dish. Growing \
784 colored circles overlap and leave spiral interference in their wake. \
785 Written by Dan Bornstein.",
786 "*hacks.shadebobs.name: ShadeBobs",
787 "*hacks.shadebobs.documentation: \
788 This draws smoothly-shaded oscilating oval patterns, that look \
789 something like vapor trails or neon tubes. Written by Shane Smit.",
790 "*hacks.ccurve.name: C Curve",
791 "*hacks.ccurve.documentation: \
792 Generates self-similar linear fractals, including the classic ``C \
793 Curve.'' Written by Rick Campbell.",
794 "*hacks.blaster.documentation: \
795 Draws a simulation of flying space-combat robots (cleverly disguised \
796 as colored circles) doing battle in front of a moving star field. \
797 Written by Jonathan Lin.",
798 "*hacks.bumps.documentation: \
799 A bit like `Spotlight', except that instead of merely exposing part \
800 of your desktop, it creates a bump map from it. Basically, it \
801 3D-izes a roaming section of your desktop, based on color intensity. \
802 Written by Shane Smit.",
803 "*hacks.xteevee.name: XTeeVee",
804 "*hacks.xteevee.documentation: \
805 XTeeVee simulates various television problems, including static, \
806 loss of vertical hold, and a test pattern. By Greg Knauss.",
807 "*hacks.xspirograph.name: XSpiroGraph",
808 "*hacks.xspirograph.documentation: \
809 Simulates that pen-in-nested-plastic-gears toy from your childhood. \
811 "*hacks.nerverot.name: NerveRot",
812 "*hacks.nerverot.documentation: \
813 Draws different shapes composed of nervously vibrating squiggles, \
814 as if seen through a camera operated by a monkey on crack. \
816 "*hacks.webcollage.name: WebCollage",
817 "*hacks.webcollage.documentation: \
818 This program makes collages out of random images pulled off of the \
819 World Wide Web. It finds these images by doing random web searches, \
820 and then extracting images from the returned pages. It can also be \
821 set up to filter the images through the `VidWhacker' program, above, \
822 which looks really great. \
824 (Note that most of the images it finds are text, and not pictures. \
825 This is because most of the web is pictures of text. Which is pretty \
826 sad.) Written by Jamie Zawinski.",
827 "*hacks.vidwhacker.name: VidWhacker",
828 "*hacks.vidwhacker.documentation: \
829 This is actually just a shell script that grabs a frame of video from \
830 the system's video input, and then uses some PBM filters (chosen at \
831 random) to manipulate and recombine the video frame in various ways \
832 (edge detection, subtracting the image from a rotated version of \
833 itself, etc.) Then it displays that image for a few seconds, and \
834 does it again. This works really well if you just feed broadcast \
835 television into it. \
837 Currently, the three lines of the script that actually grab the \
838 source picture are SGI specific, but it should be trivial to adapt it \
839 to work on other systems that can grab video (please send me the \
840 changes if you do this...)",
841 "*hacks.rocks.documentation: \
842 This draws an animation of flight through an asteroid field, with \
843 changes in rotation and direction. It can also display 3D \
844 separations for red/blue glasses! Mostly written by Jamie Zawinski.",
845 "*hacks.bubbles.documentation: \
846 This simulates the kind of bubble formation that happens when water \
847 boils:small bubbles appear, and as they get closer to each other, \
848 they combine to form larger bubbles, which eventually pop. Written \
850 "*hacks.gears.documentation: \
851 This draws sets of turning, interlocking gears, rotating in three \
852 dimensions. Another GL hack, by Danny Sung, Brian Paul, Ed Mackey, \
853 and Jamie Zawinski.",
854 "*hacks.superquadrics.documentation: \
855 Ed Mackey reports that he wrote the first version of this program in \
856 BASIC on a Commodore 64 in 1987, as a 320x200 black and white \
857 wireframe. Now it is GL and has specular reflections.",
858 "*hacks.morph3d.name: Morph3D",
859 "*hacks.morph3d.documentation: \
860 Another 3d shape-changing GL hack, by Marcelo Vianna. It has the \
861 same shiny-plastic feel as Superquadrics, as many computer-generated \
863 "*hacks.cage.documentation: \
864 This draws Escher's ``Impossible Cage,'' a 3d analog of a moebius \
865 strip, and rotates it in three dimensions. Written by Marcelo \
867 "*hacks.moebius.documentation: \
868 Another M. C. Escher hack by Marcelo Vianna, this one draws \
869 ``Moebius Strip II,'' a GL image of ants walking along the surface of \
871 "*hacks.stairs.documentation: \
872 by Marcelo Vianna's third Escher GL hack, this one draws an \
873 ``infinite'' staircase.",
874 "*hacks.pipes.documentation: \
875 If you've ever been in the same room with a Windows NT machine, \
876 you've probably seen this GL hack. This version is by Marcelo \
878 "*hacks.sproingies.documentation: \
879 Q-Bert meets Marble Madness! Written by Ed Mackey.",
880 "*hacks.rubik.documentation: \
881 Draws a Rubik's Cube that rotates in three dimensions and repeatedly \
882 shuffles and solves itself. Another fine GL hack by Marcelo Vianna.",
883 "*hacks.atlantis.documentation: \
884 This is xfishtank writ large: a GL animation of a number of sharks, \
885 dolphins, and whales. The swimming motions are great. Originally \
886 written by Mark Kilgard.",
887 "*hacks.lament.documentation: \
888 Animates a simulation of Lemarchand's Box, repeatedly solving itself. \
889 Requires OpenGL, and a machine with fast hardware support for texture \
890 maps. Warning: occasionally opens doors. Written by Jamie Zawinski.",
891 "*hacks.bubble3d.name: Bubble3D",
892 "*hacks.bubble3d.documentation: \
893 Draws a stream of rising, undulating 3D bubbles, rising toward the \
894 top of the screen, with nice specular reflections. Written by Richard \
896 "*hacks.glplanet.name: GLPlanet",
897 "*hacks.glplanet.documentation: \
898 Draws a planet bouncing around in space. Written by David Konerding. \
899 The built-in image is a map of the earth (extracted from `xearth'), \
900 but you can wrap any texture around the sphere, e.g., the planetary \
901 textures that come with `ssystem'.",
902 "*hacks.pulsar.documentation: \
903 Draws some intersecting planes, making use of alpha blending, fog, \
904 textures, and mipmaps, plus a ``frames per second'' meter so that you \
905 can tell how fast your graphics card is... Requires OpenGL. Written \
906 by David Konerding.",
907 "*hacks.extrusion.documentation: \
908 Draws various rotating extruded shapes that twist around, lengthen, \
909 and turn inside out. Created by David Konerding from the samples \
910 that come with the GL Extrusion library by Linas Vepstas.",
911 "*hacks.sierpinski3d.name: Sierpinski3D",
912 "*hacks.sierpinski3d.documentation: \
913 This draws the three-dimensional variant of the recursive Sierpinski \
914 triangle fractal, using GL. Written by Tim Robinson and Jamie Zawinski.",
915 "*hacks.ripples.documentation: \
916 This draws rippling interference patterns like splashing water. \
917 With the -water option, it manipulates your desktop image to look \
918 like something is dripping into it. Written by Tom Hammersley.",
919 "*hacks.gflux.name: GFlux",
920 "*hacks.gflux.documentation: \
921 Draws a rippling waves on a rotating wireframe grid, using GL. \
922 Written by Josiah Pease.",
923 "*hacks.xrayswarm.name: XRaySwarm",
924 "*hacks.xrayswarm.documentation: \
925 Draws a few swarms of critters flying around the screen, with nicely \
926 faded color trails behind them. Written by Chris Leger.",
927 "*hacks.zoom.documentation: \
928 Zooms in on a part of the screen and then moves around. With the \
929 -lenses option the result is like looking through many overlapping \
930 lenses rather than just a simple zoom. Written by James Macnicol.",
931 "*hacks.whirlwindwarp.name: WhirlwindWarp",
932 "*hacks.whirlwindwarp.documentation: \
933 Floating stars are acted upon by a mixture of simple 2D \
934 forcefields. The strength of each forcefield changes \
935 continuously, and it is also switched on and off at random. \
936 By Paul 'Joey' Clark.",
937 "*hacks.rotzoomer.name: RotZoomer",
938 "*hacks.rotzoomer.documentation: \
939 Creates a collage of rotated and scaled portions of the \
940 screen. Written by Claudio Matsuoka.",
941 "*hacks.stonerview.name: StonerView",
942 "*hacks.stonerview.documentation: \
943 Chains of colorful squares dance around each other in complex spiral \
944 patterns. Written by Andrew Plotkin, based on SGI's `electropaint' \
946 "*hacks.starwars.name: StarWars",
947 "*hacks.starwars.documentation: \
948 Draws a stream of text slowly scrolling into the distance at an \
949 angle, over a star field, like at the beginning of the movie of the \
950 same name. Written by Jamie Zawinski and Claudio Matauoka.",
951 "*hacks.gltext.name: GLText",
952 "*hacks.gltext.documentation: \
953 Displays a few lines of text spinning around in a solid 3D font. \
954 Written by Jamie Zawinski.",
955 "*hacks.molecule.documentation: \
956 Draws several different representations of molecules. Some common \
957 molecules are built in, and it can also read PDB (Protein Data Base) \
958 files as input. Written by Jamie Zawinski.",
959 "*hacks.dangerball.name: DangerBall",
960 "*hacks.dangerball.documentation: \
961 Draws a ball that periodically extrudes many random spikes. Ouch! \
962 Written by Jamie Zawinski.",
963 "*hacks.xdaliclock.name: XDaliClock",
964 "*hacks.xdaliclock.documentation: \
965 XDaliClock draws a large digital clock, the numbers of which change by \
966 ``melting'' into their new shapes. Written by Jamie Zawinski. This \
967 is not included with the XScreenSaver package, but if you don't have \
968 it already, you can find it at <http://www.jwz.org/xdaliclock/>.",
969 "*hacks.xearth.documentation: \
970 XEarth draws an image of the Earth, as seen from your favorite vantage \
971 point in space, correctly shaded for the current position of the Sun. \
972 Written by Kirk Johnson. This is not included with the XScreenSaver \
973 package, but if you don't have it already, you can find it at \
974 <http://www.cs.colorado.edu/~tuna/xearth/>.",
975 "*hacks.ssystem.name: SSystem",
976 "*hacks.ssystem.documentation: \
977 SSystem is a GL Solar System simulator. It simulates flybys of Sun, \
978 the nine planets and a few major satellites, with four camera modes. \
979 Written by Raul Alonso. This is not included with the XScreenSaver \
980 package, but if you don't have it already, you can find it at \
981 <http://www1.las.es/~amil/ssystem/>.",
982 "*hacks.xmountains.documentation: \
983 XMountains generates realistic-looking fractal terrains of snow-capped \
984 mountains near water, with either a top view or a side view. \
985 Written by Stephen Booth. This is not included with the XScreenSaver \
986 package, but if you don't have it already, you can find it at \
987 <http://www.epcc.ed.ac.uk/~spb/xmountains/>. \
989 Be sure to compile it with -DVROOT or it won't work right when launched \
990 by the xscreensaver daemon.",
991 "*hacks.xaos.name: XaoS",
992 "*hacks.xaos.documentation: \
993 XaoS generates fast fly-through animations of the Mandelbrot and other \
994 fractal sets. Written by Thomas Marsh and Jan Hubicka. This is not \
995 included with the XScreenSaver package, but if you don't have it \
996 already, you can find it at <http://limax.paru.cas.cz/~hubicka/XaoS/>.",
997 "*hacks.xfishtank.name: XFishTank",
998 "*hacks.xfishtank.documentation: \
999 Fish! This is not included with the XScreenSaver package, but if you \
1000 don't have it already, you can find it at \
1001 <http://metalab.unc.edu/pub/Linux/X11/demos/>.",
1002 "*hacks.xsnow.documentation: \
1003 Draws falling snow and the occasional tiny Santa. By Rick Jansen. \
1004 You can find it at <http://www.euronet.nl/~rja/Xsnow/>.",
1005 "*hacks.goban.documentation: \
1006 Replays historical games of go (aka wei-chi and baduk) on the screen. \
1007 By Scott Draves. You can find it at <http://www.draves.org/goban/>.",
1008 "*hacks.electricsheep.name: ElectricSheep",
1009 "*hacks.electricsheep.documentation: \
1010 ElectricSheep is an xscreensaver module that displays mpeg video of \
1011 an animated fractal flame. In the background, it contributes render \
1012 cycles to the next animation. Periodically it uploades completed \
1013 frames to the server, where they are compressed for distribution to \
1016 This program is recommended only if you have a high bandwidth \
1017 connection to the Internet. \
1019 By Scott Draves. You can find it at <http://www.electricsheep.org/>. \
1020 See that web site for configuration information.",
1021 "*hacks.cosmos.documentation: \
1022 Draws fireworks and zooming, fading flares. By Tom Campbell. \
1023 You can find it at <http://www.mindspring.com/~campbell/cosmos/>.",
projects / xscreensaver / blob