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