17 "*captureStderr: True",
18 "*overlayTextForeground: #FFFF00",
19 "*overlayTextBackground: #000000",
20 "*overlayStderr: True",
21 "*font: *-medium-r-*-140-*-m-*",
22 "*sgiSaverExtension: True",
23 "*mitSaverExtension: False",
24 "*xidleExtension: True",
25 "*procInterrupts: True",
26 "*demoCommand: xscreensaver-demo",
27 "*prefsCommand: xscreensaver-demo -prefs",
28 "*helpURL: http://www.jwz.org/xscreensaver/man.html",
29 "*loadURL: netscape -remote 'openURL(%s)' || netscape '%s'",
30 "*manualCommand: xterm +sb -fg black -bg gray75 -T '%s manual' \
31 -e /bin/sh -c 'man \"%s\" || read foo'",
32 "*dateFormat: %d-%b-%y (%a); %I:%M %p",
33 "*installColormap: True",
35 \"Qix (solid)\" qix -root -solid -delay 0 -segments 100 \\n\
36 \"Qix (transparent)\" qix -root -count 4 -solid -transparent \\n\
37 \"Qix (linear)\" qix -root -count 5 -solid -transparent \
38 -linear -segments 250 -size 100 \\n\
39 - mono: \"Qix (xor)\" qix -root -linear -count 5 -size 200 \
40 -spread 30 -segments 75 -solid -xor \\n\
42 \"Attraction (balls)\" attraction -root -mode balls \\n\
43 \"Attraction (lines)\" attraction -root -mode lines -points 3 \
45 - \"Attraction (poly)\" attraction -root -mode polygons \\n\
46 \"Attraction (splines)\" attraction -root -mode splines -segments \
48 \"Attraction (orbital)\" attraction -root -mode lines -radius 300 \
49 -orbit -vmult 0.5 \\n\
55 rorschach -root -offset 7 \\n\
60 slidescreen -root \\n\
61 decayscreen -root \\n\
63 blitspin -root -grab \\n\
67 \"Ripples (oily)\" ripples -root -oily -light 2 \\n\
68 \"Ripples (stir)\" ripples -root -oily -light 2 -stir \\n\
69 \"Ripples (desktop)\" ripples -root -water -light 6 \\n\
84 \"Grav (trails)\" grav -root -trail -decay \\n\
99 goop -root -max-velocity 0.5 -elasticity \
102 \"Starfish (blob)\" starfish -root -blob \\n\
105 coral -root -delay 0 \\n\
107 triangle -root -delay 1 \\n\
114 kaleidescope -root \\n\
116 xlyap -root -randomize \\n\
120 interference -root \\n\
121 truchet -root -randomize \\n\
127 \"RD-Bomb (mobile)\" rd-bomb -root -speed 1 -size 0.1 \\n\
136 \"Wander (spots)\" wander -root -advance 0 -size 10 -circles \
137 True -length 10000 -reset 100000 \\n\
141 petri -root -size 2 -count 20 \\n\
142 \"Petri 2\" petri -root -minlifespeed 0.02 \
143 -maxlifespeed 0.03 -minlifespan 1 \
144 -maxlifespan 1 -instantdeathchan 0 \
145 -minorchan 0 -anychan 0.3 \\n\
151 xspirograph -root \\n\
152 color: bubbles -root \\n\
153 default-n: webcollage -root \\n\
154 default-n: \"WebCollage (whacked)\" \
155 webcollage -root -filter \
156 'vidwhacker -stdin -stdout' \\n\
157 - default-n: vidwhacker -root \\n\
160 GL: superquadrics -root \\n\
161 GL: morph3d -root \\n\
163 GL: moebius -root \\n\
164 GL: stairs -root \\n\
166 GL: sproingies -root \\n\
168 GL: atlantis -root \\n\
169 GL: lament -root \\n\
170 GL: bubble3d -root \\n\
171 GL: glplanet -root \\n\
172 GL: pulsar -root \\n\
173 - GL: \"Pulsar (textures)\" \
174 pulsar -root -texture -mipmap \
175 -texture_quality -light -fog \\n\
176 GL: extrusion -root \\n\
177 GL: sierpinski3d -root \\n\
179 - xdaliclock -root -builtin3 -cycle \\n\
180 - default-n: xearth -nofork -nostars -ncolors 50 \
181 -night 3 -wait 0 -timewarp 400.0 -pos \
183 - ssystem -fullscreen :32 \\n\
184 - xmountains -b -M -Z 0 -r 1 \\n\
185 - \"XMountains (top)\" xmountains -b -M -Z 0 -r 1 -m \\n\
186 - xaos -root -autopilot -incoloring -1 \
187 -nogui -outcoloring -1 \\n\
191 - electricsheep \\n",
192 "XScreenSaver.pointerPollTime: 5",
193 "XScreenSaver.initialDelay: 0",
194 "XScreenSaver.windowCreationTimeout: 30",
195 "XScreenSaver.bourneShell: /bin/sh",
196 "*Dialog.headingFont: *-times-bold-r-*-*-*-180-*-*-*-iso8859-1",
197 "*Dialog.bodyFont: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
198 "*Dialog.labelFont: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
199 "*Dialog.buttonFont: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
200 "*Dialog.dateFont: *-courier-medium-r-*-*-*-80-*-*-*-iso8859-1",
201 "*Dialog.foreground: #000000",
202 "*Dialog.background: #BFBFBF",
203 "*Dialog.Button.foreground: #000000",
204 "*Dialog.Button.background: #D0D0D0",
205 "*Dialog.text.foreground: #000000",
206 "*Dialog.text.background: #FFFFFF",
207 "*Dialog.logo.foreground: #FF0000",
208 "*Dialog.logo.background: #FFFFFF",
209 "*Dialog.topShadowColor: #E7E7E7",
210 "*Dialog.bottomShadowColor: #737373",
211 "*Dialog.logo.width: 200",
212 "*Dialog.logo.height: 200",
213 "*Dialog.internalBorderWidth: 30",
214 "*Dialog.borderWidth: 1",
215 "*Dialog.shadowThickness: 4",
216 "*passwd.heading.label: XScreenSaver %s",
217 "*passwd.body.label: This display is locked.",
218 "*passwd.user.label: User:",
219 "*passwd.passwd.label: Password:",
220 "*passwd.passwdFont: *-courier-medium-r-*-*-*-140-*-*-*-iso8859-1",
221 "*passwd.thermometer.width: 8",
222 "*splash.heading.label: XScreenSaver %s",
223 "*splash.body.label: Copyright © 1991-1999 by",
224 "*splash.body2.label: Jamie Zawinski <jwz@jwz.org>",
225 "*splash.demo.label: Demo",
226 "*splash.prefs.label: Prefs",
227 "*splash.help.label: Help",
228 "*fontList: *-helvetica-medium-r-*-*-*-120-*-*-*-iso8859-1",
229 "*demoDialog*label1.fontList: *-helvetica-medium-r-*-*-*-140-*-*-*-iso8859-1",
230 "*cmdText.fontList: *-courier-medium-r-*-*-*-120-*-*-*-iso8859-1",
231 "*label0.fontList: *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1",
232 "XScreenSaver*doc.fontList: *-helvetica-medium-r-*-*-*-100-*-*-*-iso8859-1",
233 "*foreground: #000000",
234 "*background: #C0C0C0",
235 "*XmTextField.foreground: #000000",
236 "*XmTextField.background: #FFFFFF",
237 "*list.foreground: #000000",
238 "*list.background: #FFFFFF",
239 "*ApplicationShell.title: XScreenSaver",
240 "*warning.title: XScreenSaver",
241 "*warning_popup.title: XScreenSaver",
242 "*allowShellResize: True",
243 "*autoUnmanage: False",
244 "*menubar*file.labelString: File",
245 "*menubar*file.mnemonic: F",
246 "*file.blank.labelString: Blank Screen Now",
247 "*file.blank.mnemonic: B",
248 "*file.lock.labelString: Lock Screen Now",
249 "*file.lock.mnemonic: L",
250 "*file.kill.labelString: Kill Daemon",
251 "*file.kill.mnemonic: K",
252 "*file.restart.labelString: Restart Daemon",
253 "*file.restart.mnemonic: R",
254 "*file.exit.labelString: Exit",
255 "*file.exit.mnemonic: E",
256 "*menubar*edit.labelString: Edit",
257 "*menubar*edit.mnemonic: E",
258 "*edit.cut.labelString: Cut",
259 "*edit.cut.mnemonic: u",
260 "*edit.copy.labelString: Copy",
261 "*edit.copy.mnemonic: C",
262 "*edit.paste.labelString: Paste",
263 "*edit.paste.mnemonic: P",
264 "*menubar*help.labelString: Help",
265 "*menubar*help.mnemonic: H",
266 "*help.about.labelString: About...",
267 "*help.about.mnemonic: A",
268 "*help.docMenu.labelString: Documentation...",
269 "*help.docMenu.mnemonic: D",
270 "*demoTab.marginWidth: 10",
271 "*optionsTab.marginWidth: 10",
272 "*XmScrolledWindow.topOffset: 10",
273 "*XmScrolledWindow.leftOffset: 10",
274 "*demoTab.topOffset: 4",
275 "*form1.bottomOffset: 10",
276 "*form3.leftOffset: 10",
277 "*form3.rightOffset: 10",
278 "*frame.topOffset: 10",
279 "*frame.bottomOffset: 10",
280 "*enabled.topOffset: 10",
281 "*visLabel.topOffset: 10",
282 "*combo.topOffset: 10",
283 "*form4.bottomOffset: 4",
284 "*hr.bottomOffset: 4",
285 "*XmComboBox.marginWidth: 0",
286 "*XmComboBox.marginHeight: 0",
287 "*demo.marginWidth: 30",
288 "*demo.marginHeight: 4",
289 "*man.marginWidth: 10",
290 "*man.marginHeight: 4",
291 "*down.leftOffset: 40",
292 "*down.marginWidth: 4",
293 "*down.marginHeight: 4",
294 "*up.marginWidth: 4",
295 "*up.marginHeight: 4",
296 "*frame.traversalOn: False",
297 "*list.automaticSelection: True",
298 "*list.visibleItemCount: 20",
300 "*combo.columns: 11",
301 "*demoTab.labelString: Graphics Demos",
302 "*optionsTab.labelString: Screensaver Options",
303 "*down.labelString: \\\\/ ",
304 "*up.labelString: /\\\\ ",
305 "*frameLabel.labelString: ",
306 "*cmdLabel.labelString: Command Line:",
307 "*cmdLabel.alignment: ALIGNMENT_BEGINNING",
308 "*enabled.labelString: Enabled",
309 "*visLabel.labelString: Visual:",
310 "*visLabel.alignment: ALIGNMENT_END",
311 "*visLabel.leftOffset: 20",
312 "*demo.labelString: Demo",
313 "*man.labelString: Documentation...",
314 "*done.labelString: Quit",
315 "*preferencesLabel.labelString: XScreenSaver Parameters",
316 "*timeoutLabel.labelString: Saver Timeout",
317 "*cycleLabel.labelString: Cycle Timeout",
318 "*fadeSecondsLabel.labelString: Fade Duration",
319 "*fadeTicksLabel.labelString: Fade Ticks",
320 "*lockLabel.labelString: Lock Timeout",
321 "*passwdLabel.labelString: Password Timeout",
322 "*preferencesForm*XmTextField.columns: 8",
323 "*verboseToggle.labelString: Verbose",
324 "*cmapToggle.labelString: Install Colormap",
325 "*fadeToggle.labelString: Fade Colormap",
326 "*unfadeToggle.labelString: Unfade Colormap",
327 "*lockToggle.labelString: Require Password",
328 "*OK.marginWidth: 30",
329 "*OK.marginHeight: 4",
330 "*OK.leftOffset: 10",
331 "*OK.bottomOffset: 10",
332 "*Cancel.marginWidth: 30",
333 "*Cancel.marginHeight: 4",
334 "*Cancel.rightOffset: 10",
335 "*Cancel.bottomOffset: 10",
336 "*hacks.documentation.isInstalled: True",
337 "*hacks.grav.documentation: \
338 This program draws a simple orbital simulation. If you turn on \
339 trails, it looks kind of like a cloud-chamber photograph. Written by \
341 "*hacks.qix.documentation: \
342 This is the swiss army chainsaw of qix programs. It bounces a series \
343 of line segments around the screen, and uses variations on this basic \
344 motion pattern to produce all sorts of different presentations: line \
345 segments, filled polygons, overlapping translucent areas... Written \
347 "*hacks.attraction.documentation: \
348 Like qix, this uses a simple simple motion model to generate many \
349 different display modes. The control points attract each other up to \
350 a certain distance, and then begin to repel each other. The \
351 attraction/repulsion is proportional to the distance between any two \
352 particles, similar to the strong and weak nuclear forces. \
354 One of the most interesting ways to watch this hack is simply as \
355 bouncing balls, because their motions and interactions with each \
356 other are so odd. Sometimes two balls will get into a tight orbit \
357 around each other, to be interrupted later by a third, or by the edge \
358 of the screen. It looks quite chaotic. \
360 Written by Jamie Zawinski, based on Lisp code by John Pezaris.",
361 "*hacks.pyro.documentation: \
362 Pyro draws exploding fireworks. Blah blah blah. Written by Jamie \
364 "*hacks.helix.documentation: \
365 This repeatedly generates spirally string-art-ish patterns. Written \
367 "*hacks.pedal.documentation: \
368 This is sort of a combination spirograph/string-art. It generates a \
369 large, complex polygon, and lets the X server do the bulk of the work \
370 by giving it an even/odd winding rule. Written by Dale Moore, based \
371 on some ancient PDP-11 code.",
372 "*hacks.rorschach.documentation: \
373 This generates random inkblot patterns. The algorithm is deceptively \
374 simple for how well it works; it merely walks a dot around the screen \
375 randomly, and then reflects the image horizontally, vertically, or \
376 both. Any deep-seated neurotic tendencies which this program reveals \
377 are your own problem. Written by Jamie Zawinski.",
378 "*hacks.hopalong.documentation: \
379 This draws lacy fractal patterns, based on iteration in the imaginary \
380 plane, from a 1986 Scientific American article. Mostly written by \
382 "*hacks.greynetic.documentation: \
383 This draws random colored and stippled rectangles. Written by Jamie \
385 "*hacks.xroger.documentation: \
386 The XScreenSaver logo. Don't you hate it? So do I. Would you like \
387 to design a new logo for XScreenSaver? If so, send jwz your \
389 "*hacks.imsmap.name: IMSmap",
390 "*hacks.imsmap.documentation: \
391 This generates random cloud-like patterns. It looks quite different \
392 in monochrome and color. The basic idea is to take four points on \
393 the edge of the image, and assign each a random ``elevation''. Then \
394 find the point between them, and give it a value which is the average \
395 of the other four, plus some small random offset. Then coloration is \
396 done based on elevation. \
398 The color selection is done by binding the elevation to either hue, \
399 saturation, or brightness, and assigning random values to the others. \
400 The ``brightness'' mode tends to yield cloudlike patterns, and the \
401 others tend to generate images that look like heat-maps or CAT-scans. \
402 Written by Juergen Nickelsen and Jamie Zawinski.",
403 "*hacks.slidescreen.name: SlideScreen",
404 "*hacks.slidescreen.documentation: \
405 This grabs an image of whatever is on your screen, divides it into a \
406 grid, and then randomly shuffles the squares around as if it was one \
407 of those annoying ``16-puzzle'' games, where there is a grid of \
408 squares, one of which is missing. I hate trying to solve those \
409 puzzles, but watching one permute itself is more amusing. Written by \
411 "*hacks.decayscreen.name: DecayScreen",
412 "*hacks.decayscreen.documentation: \
413 This grabs an image of whatever is on your screen, and makes it melt. \
414 You've no doubt seen this effect before, but no screensaver would \
415 really be complete without it. It works best if there's something \
416 colorful visible. Warning, if the effect continues after the screen \
417 saver is off, seek medical attention. Written by David Wald and \
420 A number of these screenhacks have the ability to take an image of \
421 your desktop and manipulate it in some way. On SGI systems, these \
422 programs are able to (at random) pull their source image from the \
423 system's video input instead! This works nicely if you leave some \
424 some random television station plugged in.",
425 "*hacks.jigsaw.documentation: \
426 This grabs a screen image, carves it up into a jigsaw puzzle, \
427 shuffles it, and then solves the puzzle. This works especially well \
428 when you feed it an external video signal instead of letting it grab \
429 the screen image (actually, I guess this is generally true...) When \
430 it is grabbing a video image, it is sometimes pretty hard to guess \
431 what the image is going to look like once the puzzle is solved. \
432 Written by Jamie Zawinski.",
433 "*hacks.blitspin.name: BlitSpin",
434 "*hacks.blitspin.documentation: \
435 The ``blitspin'' hack repeatedly rotates a bitmap by 90 degrees by \
436 using logical operations: the bitmap is divided into quadrants, and \
437 the quadrants are shifted clockwise. Then the same thing is done \
438 again with progressively smaller quadrants, except that all \
439 sub-quadrants of a given size are rotated in parallel. Written by \
440 Jamie Zawinski based on some cool SmallTalk code seen in in Byte \
443 As you watch it, the image appears to dissolve into static and then \
444 reconstitute itself, but rotated. You can provide the image to use, \
445 as an XBM or XPM file, or tell it to grab a screen image and rotate \
447 "*hacks.slip.documentation: \
448 This program throws some random bits on the screen, then sucks them \
449 through a jet engine and spews them out the other side. To avoid \
450 turning the image completely to mush, every now and then it will and \
451 then it interjects some splashes of color into the scene, or go into \
452 a spin cycle, or stretch the image like taffy, or (this is my \
453 addition) grab an image of your current desktop to chew on. \
454 Originally written by Scott Draves; whacked on by Jamie Zawinski.",
455 "*hacks.distort.documentation: \
456 This hack grabs an image of the screen, and then lets a transparent \
457 lens wander around the screen, magnifying whatever is underneath. \
458 Written by Jonas Munsin.",
459 "*hacks.spotlight.documentation: \
460 Draws a spotlight scanning across a black screen, illumnating the \
461 underlying desktop when it passes. Written by Rick Schultz.",
462 "*hacks.hypercube.documentation: \
463 This displays 2D projections of the sequence of 3D objects which are \
464 the projections of the 4D analog to the cube: as a square is composed \
465 of four lines, each touching two others; and a cube is composed of \
466 six squares, each touching four others; a hypercube is composed of \
467 eight cubes, each touching six others. To make it easier to \
468 visualize the rotation, it uses a different color for the edges of \
469 each face. Don't think about it too long, or your brain will melt. \
470 Written by Joe Keane, Fritz Mueller, and Jamie Zawinski.",
471 "*hacks.halo.documentation: \
472 This draws trippy psychedelic circular patterns that hurt to look at. \
473 It can also animate the control-points, but that takes a lot of CPU \
474 and bandwidth. Written by Jamie Zawinski.",
475 "*hacks.maze.documentation: \
476 This is the ancient X maze demo, modified to work with xscreensaver. \
477 It generates a random maze, then solves it with visual feedback. \
478 Originally by Jim Randell; modified by a cast of thousands.",
479 "*hacks.noseguy.documentation: \
480 A little man with a big nose wanders around your screen saying \
481 things. The things which he says can come from a file, or from an \
482 external program like `zippy' or `fortune'. This was extracted from \
483 `xnlock' by Dan Heller. Colorized by Jamie Zawinski.",
484 "*hacks.flame.documentation: \
485 Another iterative fractal generator. Written by Scott Draves.",
486 "*hacks.lmorph.name: LMorph",
487 "*hacks.lmorph.documentation: \
488 This generates random spline-ish line drawings and morphs between \
489 them. Written by Sverre H. Huseby and Glenn T. Lines.",
490 "*hacks.deco.documentation: \
491 This one subdivides and colors rectangles randomly. It looks kind of \
492 like Brady-Bunch-era rec-room wall paneling. (Raven says: ``this \
493 screensaver is ugly enough to peel paint.'') Written by Jamie \
494 Zawinski, inspired by Java code by Michael Bayne.",
495 "*hacks.moire.documentation: \
496 This one draws cool circular interference patterns. Most of the \
497 circles you see aren't explicitly rendered, but show up as a result \
498 of interactions between the other pixels that were drawn. Written by \
499 Jamie Zawinski, inspired by Java code by Michael Bayne. As he \
500 pointed out, the beauty of this one is that the heart of the display \
501 algorithm can be expressed with just a pair of loops and a handful of \
502 arithmetic, giving it a high ``display hack metric''.",
503 "*hacks.moire2.documentation: \
504 Another example of the fun you can have with moire \
505 interference patterns; this hack generates fields of concentric \
506 circles or ovals, and combines the planes with various operations. \
507 The planes are moving independently of one another, causing the \
508 interference lines to ``spray.'' Written by Jamie Zawinski.",
509 "*hacks.lightning.documentation: \
510 This one draws crackling fractal lightning bolts. It's simple, \
511 direct, and to the point. If only it had sound... Written by Keith \
513 "*hacks.strange.documentation: \
514 This draws strange attractors: it's a colorful, \
515 unpredictably-animating field of dots that swoops and twists around. \
516 The motion is very nice. Written by Massimino Pascal.",
517 "*hacks.spiral.documentation: \
518 Moving circular patterns, by Peter Schmitzberger. Moving circular \
519 patterns means moire; interference patterns, of course.",
520 "*hacks.laser.documentation: \
521 Moving radiating lines, that look vaguely like scanning laser beams. \
522 Written by Pascal Pensa. (Frankie say: relax.)",
523 "*hacks.grav.documentation: \
524 This program draws a simple orbital simulation. If you turn on \
525 trails, it looks kind of like a cloud-chamber photograph. Written \
527 "*hacks.drift.documentation: \
528 How could one possibly describe this except as ``drifting recursive \
529 fractal cosmic flames?'' Another fine hack from the Scott Draves \
530 collection of fine hacks.",
531 "*hacks.ifs.name: IFS",
532 "*hacks.ifs.documentation: \
533 This one draws spinning, colliding iterated-function-system images. \
534 Written by Massimino Pascal.",
535 "*hacks.julia.documentation: \
536 This one draws spinning, animating (are you detecting a pattern here \
537 yet?) explorations of the Julia set. You've probably seen static \
538 images of this fractal form before, but it's a lot of fun to watch in \
539 motion as well. One interesting thing is that there is a small \
540 swinging dot passing in front of the image, which indicates the \
541 control point from which the rest of the image was generated. \
542 Written by Sean McCullough.",
543 "*hacks.penrose.documentation: \
544 Draws quasiperiodic tilings; think of the implications on modern \
545 formica technology. Written by Timo Korvola. \
547 In April 1997, Sir Roger Penrose, a British math professor who has \
548 worked with Stephen Hawking on such topics as relativity, black \
549 holes, and whether time has a beginning, filed a \
550 copyright-infringement lawsuit against the Kimberly-Clark \
551 Corporation, which Penrose said copied a pattern he created (a \
552 pattern demonstrating that ``a nonrepeating pattern could exist in \
553 nature'') for its Kleenex quilted toilet paper. Penrose said he \
554 doesn't like litigation but, ``When it comes to the population of \
555 Great Britain being invited by a multinational to wipe their bottoms \
556 on what appears to be the work of a Knight of the Realm, then a last \
557 stand must be taken.'' \
559 As reported by News of the Weird #491, 4-jul-1997.",
560 "*hacks.sierpinski.documentation: \
561 This draws the two-dimensional variant of the recursive Sierpinski \
562 triangle fractal. Written by Desmond Daignault.",
563 "*hacks.braid.documentation: \
564 Draws random color-cycling inter-braided concentric circles. Written \
566 "*hacks.galaxy.documentation: \
567 This draws spinning galaxies, which then collide and scatter their \
568 stars to the, uh, four winds or something. Originally an Amiga \
569 program by Uli Siegmund.",
570 "*hacks.bouboule.documentation: \
571 This draws what looks like a spinning, deforming baloon with \
572 varying-sized spots painted on its invisible surface. Written by \
574 "*hacks.swirl.documentation: \
575 More flowing, swirly patterns. This version is by M. Dobie and R. \
576 Taylor, but you might have seen a Mac program similar to this called \
577 FlowFazer. There is also a cool Java applet of a similar concept",
578 "*hacks.flag.documentation: \
579 This draws a waving colored flag, that undulates its way around the \
580 screen. The trick is the flag can contain arbitrary text and images. \
581 By default, it displays either the current system name and OS \
582 type, or a picture of ``Bob,'' but you can replace the text or the \
583 image with a command-line option. Written by Charles Vidal and Jamie \
585 "*hacks.sphere.documentation: \
586 Another of the classic screenhacks of the distant past, this one \
587 draws shaded spheres in multiple colors. This hack traces its \
588 lineage back to Tom Duff in 1982.",
589 "*hacks.forest.documentation: \
590 This draws fractal trees. Written by Peter Baumung. Everybody loves \
592 "*hacks.lisa.documentation: \
593 This draws Lisajous loops, by Caleb Cullen. Remember that device \
594 they had the Phantom Zone prisoners in during their trial in \
595 Superman? I think that was one of these.",
596 "*hacks.lissie.documentation: \
597 Another Lissajous figure. This one draws the progress of circular \
598 shapes along a path. Written by Alexander Jolk.",
599 "*hacks.goop.documentation: \
600 This draws set of animating, transparent, amoeba-like blobs. The \
601 blobs change shape as they wander around the screen, and they are \
602 translucent, so you can see the lower blobs through the higher ones, \
603 and when one passes over another, their colors merge. Written by \
604 Jamie Zawinski. I got the idea for this from a cool mouse pad I \
605 have, which achieves the same kind of effect in real life by having \
606 several layers plastic with colored oil between them. Written by \
608 "*hacks.starfish.documentation: \
609 This generates a sequence of undulating, throbbing, star-like \
610 patterns which pulsate, rotate, and turn inside out. Another display \
611 mode uses these shapes to lay down a field of colors, which are then \
612 cycled. The motion is very organic. Written by Jamie Zawinski.",
613 "*hacks.munch.documentation: \\n\
620 As reported by HAKMEM, in 1962, Jackson Wright wrote the above PDP-1 \
621 code. That code still lives on in this screenhack, some 35 years \
622 later. The number of lines of enclosing code has increased \
623 substantially, however. This version is by Tim Showalter.",
624 "*hacks.fadeplot.name: FadePlot",
625 "*hacks.fadeplot.documentation: \
626 Draws what looks like a waving ribbon following a sinusoidal path. \
627 Written by Bas van Gaalen and Charles Vidal.",
628 "*hacks.coral.documentation: \
629 Simulates coral growth, albeit somewhat slowly. This image doesn't \
630 really do it justice. Written by Frederick Roeber.",
631 "*hacks.mountain.documentation: \
632 Generates random 3d plots that look vaguely mountainous. Written by \
634 "*hacks.triangle.documentation: \
635 Generates random mountain ranges using iterative subdivision of \
636 triangles. Written by Tobias Gloth.",
637 "*hacks.worm.documentation: \
638 An ancient xlock hack that draws multicolored worms that crawl around \
639 the screen. Written by Brad Taylor, Dave Lemke, Boris Putanec, and \
641 "*hacks.rotor.documentation: \
642 Another ancient xlock demo, this one by Tom Lawrence. It draws a \
643 line segment moving along a complex spiraling curve. I tweaked this \
644 to generate curvier lines, but still frames of it don't look like \
646 "*hacks.ant.documentation: \
647 A cellular automaton that is really a two-dimensional Turing machine: \
648 as the heads (``ants'') walk along the screen, they change pixel \
649 values in their path. Then, as they pass over changed pixels, their \
650 behavior is influenced. Written by David Bagley.",
651 "*hacks.demon.documentation: \
652 A cellular automaton that starts with a random field, and organizes \
653 it into stripes and spirals. Written by David Bagley.",
654 "*hacks.loop.documentation: \
655 This one produces loop-shaped colonies that spawn, age, and \
656 eventually die. Written by David Bagley.",
657 "*hacks.vines.documentation: \
658 This one generates a continuous sequence of small, curvy geometric \
659 patterns. It scatters them around your screen until it fills up, \
660 then it clears the screen and starts over. Written by Tracy Camp and \
662 "*hacks.kaleidescope.documentation: \
663 Another clone of an ancient meme, consisting largely of frenetic \
664 rotational motion of colored lines. This one is by Ron Tapia. The \
665 motion is nice, but I think it needs more solids, or perhaps just \
666 brighter colors. More variations in the rotational speed might help, \
668 "*hacks.xjack.documentation: \
669 This program behaves schizophrenically and makes a lot of typos. \
670 Written by Jamie Zawinski. If you haven't seen Stanley Kubrick's \
671 masterpiece, ``The Shining,'' you won't get it. Those who have \
672 describe this hack as ``inspired.''",
673 "*hacks.xlyap.documentation: \
674 This generates pretty fractal pictures by doing funky math involving \
675 the ``Lyapunov exponent.'' It has a cool interactive mode, too. \
676 Written by Ron Record.",
677 "*hacks.cynosure.documentation: \
678 A hack similar to `greynetic', but less frenetic. The first \
679 implementation was by Stephen Linhart; then Ozymandias G. Desiderata \
680 wrote a Java applet clone. That clone was discovered by Jamie \
681 Zawinski, and ported to C for inclusion here.",
682 "*hacks.flow.documentation: \
683 Another series of strange attractors: a flowing series of points, \
684 making strange rotational shapes. Written by Jeff Butterworth.",
685 "*hacks.epicycle.documentation: \
686 This program draws the path traced out by a point on the edge of a \
687 circle. That circle rotates around a point on the rim of another \
688 circle, and so on, several times. These were the basis for the \
689 pre-heliocentric model of planetary motion. Written by James \
691 "*hacks.interference.documentation: \
692 Another color-field hack, this one works by computing decaying \
693 sinusoidal waves, and allowing them to interfere with each other as \
694 their origins move. Written by Hannu Mallat.",
695 "*hacks.truchet.documentation: \
696 This draws line- and arc-based Truchet patterns that tile the screen. \
697 Written by Adrian Likins.",
698 "*hacks.bsod.name: BSOD",
699 "*hacks.bsod.documentation: \
700 BSOD stands for ``Blue Screen of Death.'' The finest in personal \
701 computer emulation, this hack simulates popular screen savers from a \
702 number of less robust operating systems. Written by Jamie Zawinski.",
703 "*hacks.crystal.documentation: \
704 Moving polygons, similar to a kaleidescope (more like a kaleidescope \
705 than the hack called `kaleid,' actually.) This one by Jouk Jansen.",
706 "*hacks.discrete.documentation: \
707 More ``discrete map'' systems, including new variants of Hopalong and \
708 Julia, and a few others. Written by Tim Auckland.",
709 "*hacks.kumppa.documentation: \
710 Spiraling, spinning, and very, very fast splashes of color rush \
711 toward the screen. Written by Teemu Suutari.",
712 "*hacks.rd-bomb.name: RD-Bomb",
713 "*hacks.rd-bomb.documentation: \
714 Another variation of the `Bomb' program by Scott Draves. This draws \
715 a grid of growing square-like shapes that, once they overtake each \
716 other, react in unpredictable ways. ``RD'' stands for \
717 reaction-diffusion.",
718 "*hacks.sonar.documentation: \
719 This program draws a simulation of a sonar screen. Written by \
720 default, it displays a random assortment of ``bogies'' on the screen, \
721 but if compiled properly, it can ping (pun intended) your local \
722 network, and actually plot the proximity of the other hosts on your \
723 network to you. It would be easy to make it monitor other sources of \
724 data, too. (Processes? Active network connections? CPU usage per \
725 user?) Written by Stephen Martin.",
726 "*hacks.t3d.name: T3D",
727 "*hacks.t3d.documentation: \
728 This draws a working analog clock composed of floating, throbbing \
729 bubbles. Written by Bernd Paysan.",
730 "*hacks.penetrate.documentation: \
731 This hack simulates the classic arcade game Missile Command. Written \
733 "*hacks.deluxe.documentation: \
734 This draws a pulsing sequence of stars, circles, and lines. It would \
735 look better if it was faster, but as far as I can tell, there is no \
736 way to make this be both: fast, and flicker-free. Yet another reason \
737 X sucks. Written by Jamie Zawinski.",
738 "*hacks.compass.documentation: \
739 This draws a compass, with all elements spinning about randomly, for \
740 that ``lost and nauseous'' feeling. Written by Jamie Zawinski.",
741 "*hacks.squiral.documentation: \
742 Draws a set of interacting, square-spiral-producing automata. The \
743 spirals grow outward until they hit something, then they go around \
744 it. Written by Jeff Epler.",
745 "*hacks.xflame.documentation: \
746 Draws a simulation of pulsing fire. It can also take an arbitrary \
747 image and set it on fire too. Written by Carsten Haitzler, hacked on \
749 "*hacks.wander.documentation: \
750 Draws a colorful random-walk, in various forms. Written by Rick \
752 "*hacks.critical.documentation: \
753 Draws a system of self-organizing lines. It starts out as random \
754 squiggles, but after a few iterations, order begins to appear. \
755 Written by Martin Pool.",
756 "*hacks.phosphor.documentation: \
757 Draws a simulation of an old terminal, with large pixels and \
758 long-sustain phosphor. It can run any program as a source of the text \
759 it displays. Written by Jamie Zawinski.",
760 "*hacks.xmatrix.documentation: \
761 A rendition of the text scrolls seen in the movie ``The Matrix.'' \
762 Written by Jamie Zawinski.",
763 "*hacks.petri.documentation: \
764 This simulates colonies of mold growing in a petri dish. Growing \
765 colored circles overlap and leave spiral interference in their wake. \
766 Written by Dan Bornstein.",
767 "*hacks.shadebobs.name: ShadeBobs",
768 "*hacks.shadebobs.documentation: \
769 This draws smoothly-shaded oscilating oval patterns, that look \
770 something like vapor trails or neon tubes. Written by Shane Smit.",
771 "*hacks.ccurve.name: C Curve",
772 "*hacks.ccurve.documentation: \
773 Generates self-similar linear fractals, including the classic ``C \
774 Curve.'' Written by Rick Campbell.",
775 "*hacks.blaster.documentation: \
776 Draws a simulation of flying space-combat robots (cleverly disguised \
777 as colored circles) doing battle in front of a moving star field. \
778 Written by Jonathan Lin.",
779 "*hacks.bumps.documentation: \
780 A bit like `Spotlight', except that instead of merely exposing part \
781 of your desktop, it creates a bump map from it. Basically, it \
782 3D-izes a roaming section of your desktop, based on color intensity. \
783 Written by Shane Smit.",
784 "*hacks.xteevee.name: XTeeVee",
785 "*hacks.xteevee.documentation: \
786 XTeeVee simulates various television problems, including static, \
787 loss of vertical hold, and a test pattern. By Greg Knauss.",
788 "*hacks.xspirograph.name: XSpiroGraph",
789 "*hacks.xspirograph.documentation: \
790 Simulates that pen-in-nested-plastic-gears toy from your childhood. \
792 "*hacks.webcollage.name: WebCollage",
793 "*hacks.webcollage.documentation: \
794 This program makes collages out of random images pulled off of the \
795 World Wide Web. It finds these images by doing random web searches, \
796 and then extracting images from the returned pages. It can also be \
797 set up to filter the images through the `VidWhacker' program, above, \
798 which looks really great. \
800 (Note that most of the images it finds are text, and not pictures. \
801 This is because most of the web is pictures of text. Which is pretty \
802 sad.) Written by Jamie Zawinski.",
803 "*hacks.vidwhacker.name: VidWhacker",
804 "*hacks.vidwhacker.documentation: \
805 This is actually just a shell script that grabs a frame of video from \
806 the system's video input, and then uses some PBM filters (chosen at \
807 random) to manipulate and recombine the video frame in various ways \
808 (edge detection, subtracting the image from a rotated version of \
809 itself, etc.) Then it displays that image for a few seconds, and \
810 does it again. This works really well if you just feed broadcast \
811 television into it. \
813 Currently, the three lines of the script that actually grab the \
814 source picture are SGI specific, but it should be trivial to adapt it \
815 to work on other systems that can grab video (please send me the \
816 changes if you do this...)",
817 "*hacks.rocks.documentation: \
818 This draws an animation of flight through an asteroid field, with \
819 changes in rotation and direction. It can also display 3D \
820 separations for red/blue glasses! Mostly written by Jamie Zawinski.",
821 "*hacks.bubbles.documentation: \
822 This simulates the kind of bubble formation that happens when water \
823 boils:small bubbles appear, and as they get closer to each other, \
824 they combine to form larger bubbles, which eventually pop. Written \
826 "*hacks.gears.documentation: \
827 This draws a set of turning, interlocking gears, rotating in three \
828 dimensions. Another GL hack, by Danny Sung, Brian Paul, and Ed \
830 "*hacks.superquadrics.documentation: \
831 Ed Mackey reports that he wrote the first version of this program in \
832 BASIC on a Commodore 64 in 1987, as a 320x200 black and white \
833 wireframe. Now it is GL and has specular reflections.",
834 "*hacks.morph3d.name: Morph3D",
835 "*hacks.morph3d.documentation: \
836 Another 3d shape-changing GL hack, by Marcelo Vianna. It has the \
837 same shiny-plastic feel as Superquadrics, as many computer-generated \
839 "*hacks.cage.documentation: \
840 This draws Escher's ``Impossible Cage,'' a 3d analog of a moebius \
841 strip, and rotates it in three dimensions. Written by Marcelo \
843 "*hacks.moebius.documentation: \
844 Another M. C. Escher hack by Marcelo Vianna, this one draws \
845 ``Moebius Strip II,'' a GL image of ants walking along the surface of \
847 "*hacks.stairs.documentation: \
848 by Marcelo Vianna's third Escher GL hack, this one draws an \
849 ``infinite'' staircase.",
850 "*hacks.pipes.documentation: \
851 If you've ever been in the same room with a Windows NT machine, \
852 you've probably seen this GL hack. This version is by Marcelo \
854 "*hacks.sproingies.documentation: \
855 Q-Bert meets Marble Madness! Written by Ed Mackey.",
856 "*hacks.rubik.documentation: \
857 Draws a Rubik's Cube that rotates in three dimensions and repeatedly \
858 shuffles and solves itself. Another fine GL hack by Marcelo Vianna.",
859 "*hacks.atlantis.documentation: \
860 This is xfishtank writ large: a GL animation of a number of sharks, \
861 dolphins, and whales. The swimming motions are great. Originally \
862 written by Mark Kilgard.",
863 "*hacks.lament.documentation: \
864 Animates a simulation of Lemarchand's Box, repeatedly solving itself. \
865 Requires OpenGL, and a machine with fast hardware support for texture \
866 maps. Warning: occasionally opens doors. Written by Jamie Zawinski.",
867 "*hacks.bubble3d.name: Bubble3D",
868 "*hacks.bubble3d.documentation: \
869 Draws a stream of rising, undulating 3D bubbles, rising toward the \
870 top of the screen, with nice specular reflections. Written by Richard \
872 "*hacks.glplanet.name: GLPlanet",
873 "*hacks.glplanet.documentation: \
874 Draws a planet bouncing around in space. Written by David Konerding. \
875 The built-in image is a map of the earth (extracted from `xearth'), \
876 but you can wrap any texture around the sphere, e.g., the planetary \
877 textures that come with `ssystem'.",
878 "*hacks.pulsar.documentation: \
879 Draws some intersecting planes, making use of alpha blending, fog, \
880 textures, and mipmaps, plus a ``frames per second'' meter so that you \
881 can tell how fast your graphics card is... Requires OpenGL. Written \
882 by David Konerding.",
883 "*hacks.extrusion.documentation: \
884 Draws various rotating extruded shapes that twist around, lengthen, \
885 and turn inside out. Created by David Konerding from the samples \
886 that come with the GL Extrusion library by Linas Vepstas.",
887 "*hacks.sierpinski3d.name: Sierpinski3D",
888 "*hacks.sierpinski3d.documentation: \
889 This draws the three-dimensional variant of the recursive Sierpinski \
890 triangle fractal, using GL. Written by Tim Robinson and Jamie Zawinski.",
891 "*hacks.ripples.documentation: \
892 This draws rippling interference patterns like splashing water. \
893 With the -water option, it manipulates your desktop image to look \
894 like something is dripping into it. Written by Tom Hammersley.",
895 "*hacks.xdaliclock.name: XDaliClock",
896 "*hacks.xdaliclock.documentation: \
897 XDaliClock draws a large digital clock, the numbers of which change by \
898 ``melting'' into their new shapes. Written by Jamie Zawinski. This \
899 is not included with the XScreenSaver package, but if you don't have \
900 it already, you can find it at <http://www.jwz.org/xdaliclock/>.",
901 "*hacks.xearth.documentation: \
902 XEarth draws an image of the Earth, as seen from your favorite vantage \
903 point in space, correctly shaded for the current position of the Sun. \
904 Written by Kirk Johnson. This is not included with the XScreenSaver \
905 package, but if you don't have it already, you can find it at \
906 <http://www.cs.colorado.edu/~tuna/xearth/>.",
907 "*hacks.ssystem.name: SSystem",
908 "*hacks.ssystem.documentation: \
909 SSystem is a GL Solar System simulator. It simulates flybys of Sun, \
910 the nine planets and a few major satellites, with four camera modes. \
911 Written by Raul Alonso. This is not included with the XScreenSaver \
912 package, but if you don't have it already, you can find it at \
913 <http://www1.las.es/~amil/ssystem/>.",
914 "*hacks.xmountains.documentation: \
915 XMountains generates realistic-looking fractal terrains of snow-capped \
916 mountains near water, with either a top view or a side view. \
917 Written by Stephen Booth. This is not included with the XScreenSaver \
918 package, but if you don't have it already, you can find it at \
919 <http://www.epcc.ed.ac.uk/~spb/xmountains/>. \
921 Be sure to compile it with -DVROOT or it won't work right when launched \
922 by the xscreensaver daemon.",
923 "*hacks.xaos.name: XaoS",
924 "*hacks.xaos.documentation: \
925 XaoS generates fast fly-through animations of the Mandelbrot and other \
926 fractal sets. Written by Thomas Marsh and Jan Hubicka. This is not \
927 included with the XScreenSaver package, but if you don't have it \
928 already, you can find it at <http://limax.paru.cas.cz/~hubicka/XaoS/>.",
929 "*hacks.xfishtank.name: XFishTank",
930 "*hacks.xfishtank.documentation: \
931 Fish! This is not included with the XScreenSaver package, but if you \
932 don't have it already, you can find it at \
933 <http://metalab.unc.edu/pub/Linux/X11/demos/>.",
934 "*hacks.xsnow.documentation: \
935 Draws falling snow and the occasional tiny Santa. By Rick Jansen. \
936 You can find it at <http://zoutmijn.bpa.nl/rick/Xsnow/>.",
937 "*hacks.goban.documentation: \
938 Replays historical games of go (aka wei-chi and baduk) on the screen. \
939 By Scott Draves. You can find it at <http://www.draves.org/goban/>.",
940 "*hacks.electricsheep.name: ElectricSheep",
941 "*hacks.electricsheep.documentation: \
942 ElectricSheep is an xscreensaver module that displays mpeg video of \
943 an animated fractal flame. In the background, it contributes render \
944 cycles to the next animation. Periodically it uploades completed \
945 frames to the server, where they are compressed for distribution to \
948 This program is recommended only if you have a high bandwidth \
949 connection to the Internet. \
951 By Scott Draves. You can find it at <http://www.electricsheep.org/>. \
952 See that web site for configuration information.",