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