Home » Personal collection » Acorn ADFS disks » Electron » EUG_submission_1.ADF » ASG/Text
ASG/Text
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Personal collection » Acorn ADFS disks » Electron » EUG_submission_1.ADF |
| Filename: | ASG/Text |
| Read OK: | ✔ |
| File size: | 20A4 bytes |
| Load address: | 54206576 |
| Exec address: | D747865 |
File contents
�.........*.......*.......*.......*.......*.......*.......*.......*.......*.<
Autostereogram Generator
An autostereogram is a repeating pattern of dots which reveals a
convincing 3-dimensional illusion if viewed correctly. They have become
popularly known as "Magic Eye" pictures after the recent series of books,
and can also be found on posters in art shops. They are generated using
computer programs, so I set about writing a program to produce them on the
Electron.
I found a simple routine to do this, in the New Scientist magazine
last year, written in the "C" programming language, and understood enough
of it to write a version in BASIC. Unfortunately, this took over 4 hours
to run, and was only capable of producing images of very simple shapes, so
it soon became evident that a machine code version was needed. I have now
written a version which can produce virtually any image, and never takes
more than 45 minutes to run (it will often run in under 10). I admit this
is still slow - the program is held up by needing to use BASIC's RND
function to generate random numbers.
To produce an autostereogram, you will need a picture, to supply
the 3-D image that you will see. This can be a screen file in any graphics
mode (0,1,2,4,5), but must have a very clear outline, particularly on the
first one you try. The colours of the picture are used to tell the program
how far in front of the page each part of the image will appear - so don't
use them to make the picture look pretty or realistic. There is no concept
of colour in the illusions themselves.
If the picture is fairly simple, you can draw it just using BASIC's
grapics commands, and PLOT 85 to fill areas with colour, then save it
using "*SAVE <filename> 3000 8000" for a MODE 0,1 or 2 screen, or "*SAVE
<filename> 5800 8000" for a MODE 4 or 5 screen. However, it is probably
easier to use an art program such as Elkpaint (Electon User, October
1989). You will find a copy of this on the disc, with a couple of minor
improvements made to the load/save routine. The keys are as follows:
Z,X,*,? : Move cursor S : Store screen in memory
0-3 : Choose colour U : Swap to stored screen
SHIFT + 1-6 : Choose speed T : Text
B : Rubberband Q+W : Clear screen
C : Circle K : Save screen
E : Ellipse L : Load screen
R : Rectangle M : Magnify (cursors scroll view)
A then 1-5 : Brush mode F : Fill
P : Cut + paste ( use space bar to fix area to cut, drag box
to new position, press Return, then:
Space for a normal copy
H for a horizontal flip
V for a vertical flip
R to rotate (Z and X rotate about bottom
left corner, then space to fix)
Space : Confirm/fix/draw in brush and magnify modes
Return : Exit brush/magnify modes
When you have a picture ready, run the autostereogram generator.
You will first need to enter the filename of the source picture, and its
mode (this will be 5 if you used Elkpaint). Next, enter the filename you
wish to save the autostereogram under, and its mode (0 or 4). The dot
resolution in mode 0 is twice that in mode 4, but in my opinion, the
images are easier to see in mode 4. They are also much quicker to produce
in mode 4.
Next you must enter the "eye separation". This will be the distance
between the repeating patterns on the page, and hence relates to the
amount you have to cross your eyes to see the illusion (if you use my
screen dump, this will be in millimetres). I find it easiest to see the
images if I use an eye separation of about 20, though this is much less
than in most commercial autostereograms.
Next, you will be asked to enter an "elevation number" for each
logical colour used in the source picture. This is a measure of how far in
front of the page each part of the image will appear. The higher the
number, the more the illusion stands out, so you should enter 0 for the
background colour. I use a value of 4 for most images, though you can vary
this from about 2 to 10 to get a good 3-D effect. It is important that you
remember which logical colours you used for which parts of the picture. If
you use mode 0, you should double the values mentioned above (which refer
to mode 4). Similarly, if you alter the eye separation, you should change
the elevation numbers in approximately the same ratio.
Finally, you will be asked if you want a printed copy. I have
written my own single-shade screen dump for this purpose. This must be
saved in the same directory as the autostereogram generator, under the
filename "ScrDump" (sorry about the total lack of meaningful labels and
variable names in this program!). You may prefer to use the dump from
"Diagram", which I have also improved. This is twice as fast as mine, but,
the height of the printout is 25% less.
Now just sit back and wait for the result. This could take up to 45
minutes if you are using mode 0, so be patient if the computer appears to
be doing nothing for a long period.
All these parameters will sound rather complicated if you have
never actually seen an autostereogram before, but don't worry - just use
my suggested values to get you started. Then you can try varying them
later, one at a time, to see the effects.
You may be able to see the effect on your TV/monitor screen if it
is not too flickery, though it is generally easier on paper. My preferred
method is to stare blankly at the page, and slowly refocus my eyes until
two columns of the repeating pattern appear to merge into one. Then, if
you can hold your focus long enough on the merged pattern, the image
should lift out.
Other people prefer the following method: Hold the paper against
your face, and stare through it blankly. Slowly move the paper away from
your face without altering your focus, until the image appears, then wait
until it becomes clear. You will have to concentrate very hard to prevent
yourself from refocusing on the image as it appears.
Another method is to place a reflective surface over the page, and
focus on your reflection (a TV/monitor screen might also work). I have
never found this method useful myself.
You will probably find that you have to stare at them for a long
time before you see the effect for the first time (it took me several
hours), but it is well worth the wait. If you still can't see them, don't
worry - apparently an estimated 10% of the population can never see them.
The autostereograms produced by this program are not as effective
as the commercial ones (though they may be easier to see). This is partly
because they are black and white, and the patterns are not attractive in
themselves, as they are generated randomly. However, another serious
limitation is that the images you see are always parallel to the paper -
they can never slope towards or away from you. I have tried to make
sloping surfaces using a "staircase" effect - several narrow bands of mode
2 colours, with consecutive elevation numbers. However, the resolution of
mode 0 graphics was not really enough to make this successful.
You may wish to produce an autostereogram of a word, or short
phrase. If so, I have sent in a program to print large text on the
screen. This is based on the Banner Printing program from Electron User
(June 1989), and is described elsewhere on the disc.
If you produce an impressive image, send it in! Perhaps this could
be the basis of a future competition, (i.e "What object is shown in this
autostereogram?", with the source picture included on the following disc)
I have included an example of an autostereogram on the disc. The
source picture is also there, but you may prefer not to see this until you
have had a go at seeing the image. Good luck!
Matthew Ford.
00000000 81 2e 2e 2e 2e 2e 2e 2e 2e 2e 2a 2e 2e 2e 2e 2e |..........*.....| 00000010 2e 2e 2a 2e 2e 2e 2e 2e 2e 2e 2a 2e 2e 2e 2e 2e |..*.......*.....| * 00000040 2e 2e 2a 2e 2e 2e 2e 2e 2e 2e 2a 2e 3c 0d 20 20 |..*.......*.<. | 00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000060 20 20 20 20 20 20 41 75 74 6f 73 74 65 72 65 6f | Autostereo| 00000070 67 72 61 6d 20 47 65 6e 65 72 61 74 6f 72 0d 0d |gram Generator..| 00000080 20 20 20 20 20 20 20 41 6e 20 61 75 74 6f 73 74 | An autost| 00000090 65 72 65 6f 67 72 61 6d 20 69 73 20 61 20 72 65 |ereogram is a re| 000000a0 70 65 61 74 69 6e 67 1a 20 70 61 74 74 65 72 6e |peating. pattern| 000000b0 1a 20 6f 66 1a 20 64 6f 74 73 20 77 68 69 63 68 |. of. dots which| 000000c0 20 72 65 76 65 61 6c 73 20 61 0d 63 6f 6e 76 69 | reveals a.convi| 000000d0 6e 63 69 6e 67 1a 20 33 2d 64 69 6d 65 6e 73 69 |ncing. 3-dimensi| 000000e0 6f 6e 61 6c 1a 20 69 6c 6c 75 73 69 6f 6e 1a 20 |onal. illusion. | 000000f0 69 66 20 76 69 65 77 65 64 20 63 6f 72 72 65 63 |if viewed correc| 00000100 74 6c 79 2e 20 54 68 65 79 20 68 61 76 65 20 62 |tly. They have b| 00000110 65 63 6f 6d 65 0d 70 6f 70 75 6c 61 72 6c 79 20 |ecome.popularly | 00000120 6b 6e 6f 77 6e 20 61 73 20 22 4d 61 67 69 63 1a |known as "Magic.| 00000130 20 45 79 65 22 20 70 69 63 74 75 72 65 73 20 61 | Eye" pictures a| 00000140 66 74 65 72 20 74 68 65 20 72 65 63 65 6e 74 20 |fter the recent | 00000150 73 65 72 69 65 73 20 6f 66 20 62 6f 6f 6b 73 2c |series of books,| 00000160 0d 61 6e 64 20 63 61 6e 20 61 6c 73 6f 20 62 65 |.and can also be| 00000170 20 66 6f 75 6e 64 1a 20 6f 6e 1a 20 70 6f 73 74 | found. on. post| 00000180 65 72 73 1a 20 69 6e 20 61 72 74 20 73 68 6f 70 |ers. in art shop| 00000190 73 2e 20 54 68 65 79 20 61 72 65 20 67 65 6e 65 |s. They are gene| 000001a0 72 61 74 65 64 20 75 73 69 6e 67 0d 63 6f 6d 70 |rated using.comp| 000001b0 75 74 65 72 20 70 72 6f 67 72 61 6d 73 2c 20 73 |uter programs, s| 000001c0 6f 20 49 20 73 65 74 20 61 62 6f 75 74 20 77 72 |o I set about wr| 000001d0 69 74 69 6e 67 20 61 20 70 72 6f 67 72 61 6d 20 |iting a program | 000001e0 74 6f 20 70 72 6f 64 75 63 65 20 74 68 65 6d 20 |to produce them | 000001f0 6f 6e 20 74 68 65 0d 45 6c 65 63 74 72 6f 6e 2e |on the.Electron.| 00000200 0d 20 20 20 20 20 20 20 49 20 66 6f 75 6e 64 20 |. I found | 00000210 61 20 73 69 6d 70 6c 65 20 72 6f 75 74 69 6e 65 |a simple routine| 00000220 1a 20 74 6f 20 64 6f 20 74 68 69 73 2c 20 69 6e |. to do this, in| 00000230 20 74 68 65 20 4e 65 77 20 53 63 69 65 6e 74 69 | the New Scienti| 00000240 73 74 20 6d 61 67 61 7a 69 6e 65 0d 6c 61 73 74 |st magazine.last| 00000250 20 79 65 61 72 2c 20 77 72 69 74 74 65 6e 20 69 | year, written i| 00000260 6e 20 74 68 65 20 22 43 22 1a 20 70 72 6f 67 72 |n the "C". progr| 00000270 61 6d 6d 69 6e 67 20 6c 61 6e 67 75 61 67 65 2c |amming language,| 00000280 20 61 6e 64 20 75 6e 64 65 72 73 74 6f 6f 64 20 | and understood | 00000290 65 6e 6f 75 67 68 0d 6f 66 20 69 74 20 74 6f 20 |enough.of it to | 000002a0 77 72 69 74 65 20 61 20 76 65 72 73 69 6f 6e 20 |write a version | 000002b0 69 6e 1a 20 42 41 53 49 43 2e 1a 20 55 6e 66 6f |in. BASIC.. Unfo| 000002c0 72 74 75 6e 61 74 65 6c 79 2c 20 74 68 69 73 20 |rtunately, this | 000002d0 74 6f 6f 6b 20 6f 76 65 72 20 34 20 68 6f 75 72 |took over 4 hour| 000002e0 73 0d 74 6f 20 72 75 6e 2c 20 61 6e 64 20 77 61 |s.to run, and wa| 000002f0 73 20 6f 6e 6c 79 20 63 61 70 61 62 6c 65 20 6f |s only capable o| 00000300 66 20 70 72 6f 64 75 63 69 6e 67 20 69 6d 61 67 |f producing imag| 00000310 65 73 20 6f 66 20 76 65 72 79 20 73 69 6d 70 6c |es of very simpl| 00000320 65 20 73 68 61 70 65 73 2c 20 73 6f 0d 69 74 20 |e shapes, so.it | 00000330 73 6f 6f 6e 20 62 65 63 61 6d 65 20 65 76 69 64 |soon became evid| 00000340 65 6e 74 20 74 68 61 74 20 61 20 6d 61 63 68 69 |ent that a machi| 00000350 6e 65 20 63 6f 64 65 20 76 65 72 73 69 6f 6e 1a |ne code version.| 00000360 20 77 61 73 20 6e 65 65 64 65 64 2e 20 49 20 68 | was needed. I h| 00000370 61 76 65 20 6e 6f 77 0d 77 72 69 74 74 65 6e 20 |ave now.written | 00000380 61 20 76 65 72 73 69 6f 6e 20 77 68 69 63 68 20 |a version which | 00000390 63 61 6e 20 70 72 6f 64 75 63 65 20 76 69 72 74 |can produce virt| 000003a0 75 61 6c 6c 79 20 61 6e 79 20 69 6d 61 67 65 2c |ually any image,| 000003b0 20 61 6e 64 1a 20 20 6e 65 76 65 72 20 74 61 6b | and. never tak| 000003c0 65 73 0d 6d 6f 72 65 20 74 68 61 6e 20 34 35 20 |es.more than 45 | 000003d0 6d 69 6e 75 74 65 73 20 74 6f 20 72 75 6e 20 28 |minutes to run (| 000003e0 69 74 20 77 69 6c 6c 20 6f 66 74 65 6e 20 72 75 |it will often ru| 000003f0 6e 20 69 6e 1a 20 75 6e 64 65 72 20 31 30 29 2e |n in. under 10).| 00000400 20 49 20 61 64 6d 69 74 20 74 68 69 73 0d 69 73 | I admit this.is| 00000410 1a 20 73 74 69 6c 6c 1a 20 73 6c 6f 77 20 2d 20 |. still. slow - | 00000420 74 68 65 20 70 72 6f 67 72 61 6d 20 69 73 20 68 |the program is h| 00000430 65 6c 64 20 75 70 20 62 79 20 6e 65 65 64 69 6e |eld up by needin| 00000440 67 20 74 6f 1a 20 75 73 65 1a 20 42 41 53 49 43 |g to. use. BASIC| 00000450 27 73 1a 20 20 52 4e 44 0d 66 75 6e 63 74 69 6f |'s. RND.functio| 00000460 6e 20 74 6f 20 67 65 6e 65 72 61 74 65 20 72 61 |n to generate ra| 00000470 6e 64 6f 6d 20 6e 75 6d 62 65 72 73 2e 0d 20 20 |ndom numbers.. | 00000480 20 20 20 20 20 54 6f 20 70 72 6f 64 75 63 65 20 | To produce | 00000490 61 6e 20 61 75 74 6f 73 74 65 72 65 6f 67 72 61 |an autostereogra| 000004a0 6d 2c 20 79 6f 75 1a 20 77 69 6c 6c 1a 20 6e 65 |m, you. will. ne| 000004b0 65 64 1a 20 61 20 70 69 63 74 75 72 65 2c 20 74 |ed. a picture, t| 000004c0 6f 20 73 75 70 70 6c 79 0d 74 68 65 20 33 2d 44 |o supply.the 3-D| 000004d0 20 69 6d 61 67 65 20 74 68 61 74 20 79 6f 75 20 | image that you | 000004e0 77 69 6c 6c 20 73 65 65 2e 20 54 68 69 73 20 63 |will see. This c| 000004f0 61 6e 20 62 65 20 61 20 73 63 72 65 65 6e 20 66 |an be a screen f| 00000500 69 6c 65 20 69 6e 20 61 6e 79 20 67 72 61 70 68 |ile in any graph| 00000510 69 63 73 0d 6d 6f 64 65 20 28 30 2c 31 2c 32 2c |ics.mode (0,1,2,| 00000520 34 2c 35 29 2c 20 62 75 74 20 6d 75 73 74 20 68 |4,5), but must h| 00000530 61 76 65 20 61 20 76 65 72 79 20 63 6c 65 61 72 |ave a very clear| 00000540 1a 20 6f 75 74 6c 69 6e 65 2c 20 70 61 72 74 69 |. outline, parti| 00000550 63 75 6c 61 72 6c 79 20 6f 6e 20 74 68 65 0d 66 |cularly on the.f| 00000560 69 72 73 74 20 6f 6e 65 20 79 6f 75 20 74 72 79 |irst one you try| 00000570 2e 20 54 68 65 20 63 6f 6c 6f 75 72 73 20 6f 66 |. The colours of| 00000580 20 74 68 65 20 70 69 63 74 75 72 65 20 61 72 65 | the picture are| 00000590 20 75 73 65 64 20 74 6f 20 74 65 6c 6c 20 74 68 | used to tell th| 000005a0 65 20 70 72 6f 67 72 61 6d 0d 68 6f 77 20 66 61 |e program.how fa| 000005b0 72 20 69 6e 20 66 72 6f 6e 74 20 6f 66 20 74 68 |r in front of th| 000005c0 65 20 70 61 67 65 20 65 61 63 68 20 70 61 72 74 |e page each part| 000005d0 20 6f 66 20 74 68 65 20 69 6d 61 67 65 20 77 69 | of the image wi| 000005e0 6c 6c 20 61 70 70 65 61 72 20 2d 20 73 6f 20 64 |ll appear - so d| 000005f0 6f 6e 27 74 0d 75 73 65 20 74 68 65 6d 20 74 6f |on't.use them to| 00000600 20 6d 61 6b 65 20 74 68 65 20 70 69 63 74 75 72 | make the pictur| 00000610 65 20 6c 6f 6f 6b 20 70 72 65 74 74 79 20 6f 72 |e look pretty or| 00000620 20 72 65 61 6c 69 73 74 69 63 2e 20 54 68 65 72 | realistic. Ther| 00000630 65 20 69 73 20 6e 6f 20 63 6f 6e 63 65 70 74 0d |e is no concept.| 00000640 6f 66 20 63 6f 6c 6f 75 72 20 69 6e 20 74 68 65 |of colour in the| 00000650 20 69 6c 6c 75 73 69 6f 6e 73 20 74 68 65 6d 73 | illusions thems| 00000660 65 6c 76 65 73 2e 0d 20 20 20 20 20 20 20 49 66 |elves.. If| 00000670 20 74 68 65 20 70 69 63 74 75 72 65 20 69 73 20 | the picture is | 00000680 66 61 69 72 6c 79 20 73 69 6d 70 6c 65 2c 20 79 |fairly simple, y| 00000690 6f 75 20 63 61 6e 20 64 72 61 77 20 69 74 20 6a |ou can draw it j| 000006a0 75 73 74 20 75 73 69 6e 67 20 42 41 53 49 43 27 |ust using BASIC'| 000006b0 73 0d 67 72 61 70 69 63 73 20 63 6f 6d 6d 61 6e |s.grapics comman| 000006c0 64 73 2c 20 61 6e 64 20 50 4c 4f 54 20 38 35 1a |ds, and PLOT 85.| 000006d0 20 74 6f 1a 20 66 69 6c 6c 1a 20 61 72 65 61 73 | to. fill. areas| 000006e0 1a 20 77 69 74 68 1a 20 63 6f 6c 6f 75 72 2c 20 |. with. colour, | 000006f0 74 68 65 6e 20 73 61 76 65 20 69 74 0d 75 73 69 |then save it.usi| 00000700 6e 67 20 22 2a 53 41 56 45 20 3c 66 69 6c 65 6e |ng "*SAVE <filen| 00000710 61 6d 65 3e 20 33 30 30 30 20 38 30 30 30 22 20 |ame> 3000 8000" | 00000720 66 6f 72 20 61 20 4d 4f 44 45 20 30 2c 31 20 6f |for a MODE 0,1 o| 00000730 72 1a 20 32 1a 20 73 63 72 65 65 6e 2c 20 6f 72 |r. 2. screen, or| 00000740 20 22 2a 53 41 56 45 0d 3c 66 69 6c 65 6e 61 6d | "*SAVE.<filenam| 00000750 65 3e 1a 20 35 38 30 30 20 38 30 30 30 22 20 66 |e>. 5800 8000" f| 00000760 6f 72 20 61 20 4d 4f 44 45 20 34 20 6f 72 20 35 |or a MODE 4 or 5| 00000770 20 73 63 72 65 65 6e 2e 20 48 6f 77 65 76 65 72 | screen. However| 00000780 2c 20 69 74 1a 20 69 73 1a 20 70 72 6f 62 61 62 |, it. is. probab| 00000790 6c 79 0d 65 61 73 69 65 72 20 74 6f 1a 20 75 73 |ly.easier to. us| 000007a0 65 1a 20 61 6e 1a 20 61 72 74 1a 20 70 72 6f 67 |e. an. art. prog| 000007b0 72 61 6d 1a 20 73 75 63 68 1a 20 61 73 20 45 6c |ram. such. as El| 000007c0 6b 70 61 69 6e 74 20 28 45 6c 65 63 74 6f 6e 20 |kpaint (Electon | 000007d0 55 73 65 72 2c 20 4f 63 74 6f 62 65 72 0d 31 39 |User, October.19| 000007e0 38 39 29 2e 20 59 6f 75 20 77 69 6c 6c 20 66 69 |89). You will fi| 000007f0 6e 64 20 61 20 63 6f 70 79 20 6f 66 20 74 68 69 |nd a copy of thi| 00000800 73 1a 20 6f 6e 1a 20 74 68 65 1a 20 64 69 73 63 |s. on. the. disc| 00000810 2c 20 77 69 74 68 20 61 20 63 6f 75 70 6c 65 20 |, with a couple | 00000820 6f 66 20 6d 69 6e 6f 72 0d 69 6d 70 72 6f 76 65 |of minor.improve| 00000830 6d 65 6e 74 73 20 6d 61 64 65 20 74 6f 20 74 68 |ments made to th| 00000840 65 20 6c 6f 61 64 2f 73 61 76 65 20 72 6f 75 74 |e load/save rout| 00000850 69 6e 65 2e 20 54 68 65 20 6b 65 79 73 20 61 72 |ine. The keys ar| 00000860 65 20 61 73 20 66 6f 6c 6c 6f 77 73 3a 0d 20 20 |e as follows:. | 00000870 20 20 20 20 20 5a 2c 58 2c 2a 2c 3f 20 3a 20 4d | Z,X,*,? : M| 00000880 6f 76 65 20 63 75 72 73 6f 72 20 20 20 20 20 20 |ove cursor | 00000890 20 20 53 20 3a 20 53 74 6f 72 65 20 73 63 72 65 | S : Store scre| 000008a0 65 6e 20 69 6e 20 6d 65 6d 6f 72 79 0d 20 20 20 |en in memory. | 000008b0 20 20 20 20 20 20 20 20 30 2d 33 20 3a 20 43 68 | 0-3 : Ch| 000008c0 6f 6f 73 65 20 63 6f 6c 6f 75 72 20 20 20 20 20 |oose colour | 000008d0 20 55 20 3a 20 53 77 61 70 20 74 6f 20 73 74 6f | U : Swap to sto| 000008e0 72 65 64 20 73 63 72 65 65 6e 0d 20 20 20 53 48 |red screen. SH| 000008f0 49 46 54 20 2b 20 31 2d 36 20 3a 20 43 68 6f 6f |IFT + 1-6 : Choo| 00000900 73 65 20 73 70 65 65 64 20 20 20 20 20 20 20 54 |se speed T| 00000910 20 3a 20 54 65 78 74 0d 20 20 20 20 20 20 20 20 | : Text. | 00000920 20 20 20 20 20 42 20 3a 20 52 75 62 62 65 72 62 | B : Rubberb| 00000930 61 6e 64 20 20 20 20 20 20 20 51 2b 57 20 3a 20 |and Q+W : | 00000940 43 6c 65 61 72 20 73 63 72 65 65 6e 0d 20 20 20 |Clear screen. | 00000950 20 20 20 20 20 20 20 20 20 20 43 20 3a 20 43 69 | C : Ci| 00000960 72 63 6c 65 20 20 20 20 20 20 20 20 20 20 20 20 |rcle | 00000970 20 4b 20 3a 20 53 61 76 65 20 73 63 72 65 65 6e | K : Save screen| 00000980 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 45 20 |. E | 00000990 3a 20 45 6c 6c 69 70 73 65 20 20 20 20 20 20 20 |: Ellipse | 000009a0 20 20 20 20 20 4c 20 3a 20 4c 6f 61 64 20 73 63 | L : Load sc| 000009b0 72 65 65 6e 0d 20 20 20 20 20 20 20 20 20 20 20 |reen. | 000009c0 20 20 52 20 3a 20 52 65 63 74 61 6e 67 6c 65 20 | R : Rectangle | 000009d0 20 20 20 20 20 20 20 20 20 4d 20 3a 20 4d 61 67 | M : Mag| 000009e0 6e 69 66 79 20 28 63 75 72 73 6f 72 73 20 73 63 |nify (cursors sc| 000009f0 72 6f 6c 6c 20 76 69 65 77 29 0d 20 20 20 20 41 |roll view). A| 00000a00 20 74 68 65 6e 20 31 2d 35 20 3a 20 42 72 75 73 | then 1-5 : Brus| 00000a10 68 20 6d 6f 64 65 20 20 20 20 20 20 20 20 20 46 |h mode F| 00000a20 20 3a 20 46 69 6c 6c 0d 20 20 20 20 20 20 20 20 | : Fill. | 00000a30 20 20 20 20 20 50 20 3a 20 43 75 74 20 2b 20 70 | P : Cut + p| 00000a40 61 73 74 65 20 28 20 75 73 65 20 73 70 61 63 65 |aste ( use space| 00000a50 20 62 61 72 20 74 6f 20 66 69 78 20 61 72 65 61 | bar to fix area| 00000a60 20 74 6f 20 63 75 74 2c 20 64 72 61 67 20 62 6f | to cut, drag bo| 00000a70 78 20 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |x . | 00000a80 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000a90 20 20 20 74 6f 20 6e 65 77 20 70 6f 73 69 74 69 | to new positi| 00000aa0 6f 6e 2c 20 70 72 65 73 73 20 52 65 74 75 72 6e |on, press Return| 00000ab0 2c 20 74 68 65 6e 3a 0d 20 20 20 20 20 20 20 20 |, then:. | 00000ac0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000ad0 20 20 20 20 20 20 20 53 70 61 63 65 20 66 6f 72 | Space for| 00000ae0 20 61 20 6e 6f 72 6d 61 6c 20 63 6f 70 79 0d 20 | a normal copy. | 00000af0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000b00 20 20 20 20 20 20 20 20 20 20 20 20 20 20 48 20 | H | 00000b10 66 6f 72 20 61 20 68 6f 72 69 7a 6f 6e 74 61 6c |for a horizontal| 00000b20 20 66 6c 69 70 0d 20 20 20 20 20 20 20 20 20 20 | flip. | 00000b30 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000b40 20 20 20 20 20 56 20 66 6f 72 20 61 20 76 65 72 | V for a ver| 00000b50 74 69 63 61 6c 20 66 6c 69 70 0d 20 20 20 20 20 |tical flip. | 00000b60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000b70 20 20 20 20 20 20 20 20 20 20 52 20 74 6f 20 72 | R to r| 00000b80 6f 74 61 74 65 20 28 5a 20 61 6e 64 20 58 20 72 |otate (Z and X r| 00000b90 6f 74 61 74 65 20 61 62 6f 75 74 20 62 6f 74 74 |otate about bott| 00000ba0 6f 6d 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |om. | 00000bb0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000bc0 20 20 20 6c 65 66 74 20 63 6f 72 6e 65 72 2c 20 | left corner, | 00000bd0 74 68 65 6e 20 73 70 61 63 65 20 74 6f 20 66 69 |then space to fi| 00000be0 78 29 0d 20 20 20 20 20 20 20 20 20 53 70 61 63 |x). Spac| 00000bf0 65 20 3a 20 43 6f 6e 66 69 72 6d 2f 66 69 78 2f |e : Confirm/fix/| 00000c00 64 72 61 77 20 69 6e 20 62 72 75 73 68 20 61 6e |draw in brush an| 00000c10 64 20 6d 61 67 6e 69 66 79 20 6d 6f 64 65 73 0d |d magnify modes.| 00000c20 20 20 20 20 20 20 20 20 52 65 74 75 72 6e 20 3a | Return :| 00000c30 20 45 78 69 74 20 62 72 75 73 68 2f 6d 61 67 6e | Exit brush/magn| 00000c40 69 66 79 20 6d 6f 64 65 73 0d 0d 20 20 20 20 20 |ify modes.. | 00000c50 20 20 57 68 65 6e 20 79 6f 75 20 68 61 76 65 20 | When you have | 00000c60 61 20 70 69 63 74 75 72 65 1a 20 72 65 61 64 79 |a picture. ready| 00000c70 2c 1a 20 72 75 6e 1a 20 74 68 65 20 61 75 74 6f |,. run. the auto| 00000c80 73 74 65 72 65 6f 67 72 61 6d 20 67 65 6e 65 72 |stereogram gener| 00000c90 61 74 6f 72 2e 0d 59 6f 75 20 77 69 6c 6c 20 66 |ator..You will f| 00000ca0 69 72 73 74 20 6e 65 65 64 20 74 6f 20 65 6e 74 |irst need to ent| 00000cb0 65 72 20 74 68 65 20 66 69 6c 65 6e 61 6d 65 1a |er the filename.| 00000cc0 20 6f 66 1a 20 74 68 65 20 73 6f 75 72 63 65 20 | of. the source | 00000cd0 70 69 63 74 75 72 65 2c 20 61 6e 64 20 69 74 73 |picture, and its| 00000ce0 0d 6d 6f 64 65 20 28 74 68 69 73 20 77 69 6c 6c |.mode (this will| 00000cf0 20 62 65 20 35 20 69 66 20 79 6f 75 20 75 73 65 | be 5 if you use| 00000d00 64 20 45 6c 6b 70 61 69 6e 74 29 2e 20 4e 65 78 |d Elkpaint). Nex| 00000d10 74 2c 1a 20 65 6e 74 65 72 1a 20 74 68 65 20 66 |t,. enter. the f| 00000d20 69 6c 65 6e 61 6d 65 20 79 6f 75 0d 77 69 73 68 |ilename you.wish| 00000d30 1a 20 74 6f 1a 20 73 61 76 65 1a 20 74 68 65 20 |. to. save. the | 00000d40 61 75 74 6f 73 74 65 72 65 6f 67 72 61 6d 20 75 |autostereogram u| 00000d50 6e 64 65 72 2c 20 61 6e 64 20 69 74 73 20 6d 6f |nder, and its mo| 00000d60 64 65 20 28 30 20 6f 72 20 34 29 2e 1a 20 54 68 |de (0 or 4).. Th| 00000d70 65 1a 20 64 6f 74 0d 72 65 73 6f 6c 75 74 69 6f |e. dot.resolutio| 00000d80 6e 20 69 6e 20 6d 6f 64 65 20 30 1a 20 69 73 1a |n in mode 0. is.| 00000d90 20 74 77 69 63 65 1a 20 74 68 61 74 1a 20 69 6e | twice. that. in| 00000da0 1a 20 6d 6f 64 65 1a 20 34 2c 20 62 75 74 20 69 |. mode. 4, but i| 00000db0 6e 20 6d 79 20 6f 70 69 6e 69 6f 6e 2c 20 74 68 |n my opinion, th| 00000dc0 65 0d 69 6d 61 67 65 73 20 61 72 65 20 65 61 73 |e.images are eas| 00000dd0 69 65 72 20 74 6f 20 73 65 65 20 69 6e 20 6d 6f |ier to see in mo| 00000de0 64 65 20 34 2e 20 54 68 65 79 20 61 72 65 1a 20 |de 4. They are. | 00000df0 61 6c 73 6f 20 6d 75 63 68 20 71 75 69 63 6b 65 |also much quicke| 00000e00 72 20 74 6f 20 70 72 6f 64 75 63 65 0d 69 6e 20 |r to produce.in | 00000e10 6d 6f 64 65 20 34 2e 0d 20 20 20 20 20 20 4e 65 |mode 4.. Ne| 00000e20 78 74 20 79 6f 75 20 6d 75 73 74 20 65 6e 74 65 |xt you must ente| 00000e30 72 20 74 68 65 1a 20 22 65 79 65 20 73 65 70 61 |r the. "eye sepa| 00000e40 72 61 74 69 6f 6e 22 2e 20 54 68 69 73 20 77 69 |ration". This wi| 00000e50 6c 6c 20 62 65 20 74 68 65 20 64 69 73 74 61 6e |ll be the distan| 00000e60 63 65 0d 62 65 74 77 65 65 6e 20 74 68 65 20 72 |ce.between the r| 00000e70 65 70 65 61 74 69 6e 67 20 70 61 74 74 65 72 6e |epeating pattern| 00000e80 73 20 6f 6e 20 74 68 65 1a 20 70 61 67 65 2c 1a |s on the. page,.| 00000e90 20 61 6e 64 1a 20 68 65 6e 63 65 1a 20 72 65 6c | and. hence. rel| 00000ea0 61 74 65 73 1a 20 74 6f 1a 20 74 68 65 0d 61 6d |ates. to. the.am| 00000eb0 6f 75 6e 74 1a 20 79 6f 75 1a 20 68 61 76 65 1a |ount. you. have.| 00000ec0 20 74 6f 1a 20 63 72 6f 73 73 1a 20 79 6f 75 72 | to. cross. your| 00000ed0 20 65 79 65 73 20 74 6f 20 73 65 65 20 74 68 65 | eyes to see the| 00000ee0 20 69 6c 6c 75 73 69 6f 6e 20 28 69 66 20 79 6f | illusion (if yo| 00000ef0 75 20 75 73 65 20 6d 79 0d 73 63 72 65 65 6e 20 |u use my.screen | 00000f00 64 75 6d 70 2c 20 74 68 69 73 20 77 69 6c 6c 20 |dump, this will | 00000f10 62 65 20 69 6e 1a 20 6d 69 6c 6c 69 6d 65 74 72 |be in. millimetr| 00000f20 65 73 29 2e 1a 20 49 1a 20 66 69 6e 64 20 69 74 |es).. I. find it| 00000f30 20 65 61 73 69 65 73 74 20 74 6f 20 73 65 65 20 | easiest to see | 00000f40 74 68 65 0d 69 6d 61 67 65 73 20 69 66 20 49 20 |the.images if I | 00000f50 75 73 65 20 61 6e 20 65 79 65 20 73 65 70 61 72 |use an eye separ| 00000f60 61 74 69 6f 6e 20 6f 66 20 61 62 6f 75 74 1a 20 |ation of about. | 00000f70 32 30 2c 1a 20 74 68 6f 75 67 68 1a 20 74 68 69 |20,. though. thi| 00000f80 73 20 69 73 20 6d 75 63 68 20 6c 65 73 73 0d 74 |s is much less.t| 00000f90 68 61 6e 20 69 6e 20 6d 6f 73 74 20 63 6f 6d 6d |han in most comm| 00000fa0 65 72 63 69 61 6c 20 61 75 74 6f 73 74 65 72 65 |ercial autostere| 00000fb0 6f 67 72 61 6d 73 2e 0d 20 20 20 20 20 20 4e 65 |ograms.. Ne| 00000fc0 78 74 2c 20 79 6f 75 20 77 69 6c 6c 20 62 65 20 |xt, you will be | 00000fd0 61 73 6b 65 64 1a 20 74 6f 1a 20 65 6e 74 65 72 |asked. to. enter| 00000fe0 1a 20 61 6e 1a 20 22 65 6c 65 76 61 74 69 6f 6e |. an. "elevation| 00000ff0 1a 20 6e 75 6d 62 65 72 22 20 66 6f 72 20 65 61 |. number" for ea| 00001000 63 68 0d 6c 6f 67 69 63 61 6c 20 63 6f 6c 6f 75 |ch.logical colou| 00001010 72 20 75 73 65 64 20 69 6e 20 74 68 65 20 73 6f |r used in the so| 00001020 75 72 63 65 20 70 69 63 74 75 72 65 2e 20 54 68 |urce picture. Th| 00001030 69 73 20 69 73 20 61 20 6d 65 61 73 75 72 65 20 |is is a measure | 00001040 6f 66 20 68 6f 77 20 66 61 72 20 69 6e 0d 66 72 |of how far in.fr| 00001050 6f 6e 74 1a 20 6f 66 1a 20 74 68 65 20 70 61 67 |ont. of. the pag| 00001060 65 20 65 61 63 68 20 70 61 72 74 20 6f 66 20 74 |e each part of t| 00001070 68 65 20 69 6d 61 67 65 20 77 69 6c 6c 1a 20 61 |he image will. a| 00001080 70 70 65 61 72 2e 1a 20 54 68 65 1a 20 68 69 67 |ppear.. The. hig| 00001090 68 65 72 1a 20 74 68 65 0d 6e 75 6d 62 65 72 2c |her. the.number,| 000010a0 20 74 68 65 20 6d 6f 72 65 1a 20 74 68 65 1a 20 | the more. the. | 000010b0 69 6c 6c 75 73 69 6f 6e 1a 20 73 74 61 6e 64 73 |illusion. stands| 000010c0 20 6f 75 74 2c 20 73 6f 20 79 6f 75 20 73 68 6f | out, so you sho| 000010d0 75 6c 64 20 65 6e 74 65 72 20 30 20 66 6f 72 20 |uld enter 0 for | 000010e0 74 68 65 0d 62 61 63 6b 67 72 6f 75 6e 64 20 63 |the.background c| 000010f0 6f 6c 6f 75 72 2e 20 49 20 75 73 65 20 61 20 76 |olour. I use a v| 00001100 61 6c 75 65 20 6f 66 20 34 20 66 6f 72 20 6d 6f |alue of 4 for mo| 00001110 73 74 20 69 6d 61 67 65 73 2c 20 74 68 6f 75 67 |st images, thoug| 00001120 68 20 79 6f 75 20 63 61 6e 20 76 61 72 79 0d 74 |h you can vary.t| 00001130 68 69 73 20 66 72 6f 6d 20 61 62 6f 75 74 20 32 |his from about 2| 00001140 20 74 6f 20 31 30 20 74 6f 20 67 65 74 20 61 20 | to 10 to get a | 00001150 67 6f 6f 64 20 33 2d 44 20 65 66 66 65 63 74 2e |good 3-D effect.| 00001160 20 49 74 20 69 73 20 69 6d 70 6f 72 74 61 6e 74 | It is important| 00001170 20 74 68 61 74 20 79 6f 75 0d 72 65 6d 65 6d 62 | that you.rememb| 00001180 65 72 20 77 68 69 63 68 20 6c 6f 67 69 63 61 6c |er which logical| 00001190 20 63 6f 6c 6f 75 72 73 20 79 6f 75 20 75 73 65 | colours you use| 000011a0 64 20 66 6f 72 20 77 68 69 63 68 20 70 61 72 74 |d for which part| 000011b0 73 20 6f 66 20 74 68 65 20 70 69 63 74 75 72 65 |s of the picture| 000011c0 2e 20 49 66 0d 79 6f 75 20 75 73 65 20 6d 6f 64 |. If.you use mod| 000011d0 65 20 30 2c 20 79 6f 75 20 73 68 6f 75 6c 64 1a |e 0, you should.| 000011e0 20 64 6f 75 62 6c 65 20 74 68 65 20 76 61 6c 75 | double the valu| 000011f0 65 73 20 6d 65 6e 74 69 6f 6e 65 64 20 61 62 6f |es mentioned abo| 00001200 76 65 20 28 77 68 69 63 68 20 72 65 66 65 72 0d |ve (which refer.| 00001210 74 6f 20 6d 6f 64 65 20 34 29 2e 20 53 69 6d 69 |to mode 4). Simi| 00001220 6c 61 72 6c 79 2c 20 69 66 20 79 6f 75 20 61 6c |larly, if you al| 00001230 74 65 72 1a 20 74 68 65 20 65 79 65 20 73 65 70 |ter. the eye sep| 00001240 61 72 61 74 69 6f 6e 2c 20 79 6f 75 20 73 68 6f |aration, you sho| 00001250 75 6c 64 20 63 68 61 6e 67 65 0d 74 68 65 20 65 |uld change.the e| 00001260 6c 65 76 61 74 69 6f 6e 20 6e 75 6d 62 65 72 73 |levation numbers| 00001270 20 69 6e 20 61 70 70 72 6f 78 69 6d 61 74 65 6c | in approximatel| 00001280 79 20 74 68 65 20 73 61 6d 65 20 72 61 74 69 6f |y the same ratio| 00001290 2e 0d 20 20 20 20 20 20 20 46 69 6e 61 6c 6c 79 |.. Finally| 000012a0 2c 20 79 6f 75 20 77 69 6c 6c 20 62 65 20 61 73 |, you will be as| 000012b0 6b 65 64 1a 20 69 66 1a 20 79 6f 75 1a 20 77 61 |ked. if. you. wa| 000012c0 6e 74 1a 20 61 1a 20 70 72 69 6e 74 65 64 1a 20 |nt. a. printed. | 000012d0 63 6f 70 79 2e 20 49 20 68 61 76 65 0d 77 72 69 |copy. I have.wri| 000012e0 74 74 65 6e 1a 20 6d 79 1a 20 6f 77 6e 1a 20 73 |tten. my. own. s| 000012f0 69 6e 67 6c 65 2d 73 68 61 64 65 1a 20 73 63 72 |ingle-shade. scr| 00001300 65 65 6e 20 64 75 6d 70 20 66 6f 72 20 74 68 69 |een dump for thi| 00001310 73 20 70 75 72 70 6f 73 65 2e 20 54 68 69 73 20 |s purpose. This | 00001320 6d 75 73 74 20 62 65 0d 73 61 76 65 64 20 69 6e |must be.saved in| 00001330 20 74 68 65 20 73 61 6d 65 20 64 69 72 65 63 74 | the same direct| 00001340 6f 72 79 1a 20 61 73 1a 20 74 68 65 1a 20 61 75 |ory. as. the. au| 00001350 74 6f 73 74 65 72 65 6f 67 72 61 6d 1a 20 67 65 |tostereogram. ge| 00001360 6e 65 72 61 74 6f 72 2c 20 75 6e 64 65 72 20 74 |nerator, under t| 00001370 68 65 0d 66 69 6c 65 6e 61 6d 65 1a 20 22 53 63 |he.filename. "Sc| 00001380 72 44 75 6d 70 22 20 28 73 6f 72 72 79 20 61 62 |rDump" (sorry ab| 00001390 6f 75 74 20 74 68 65 20 74 6f 74 61 6c 20 6c 61 |out the total la| 000013a0 63 6b 20 6f 66 20 6d 65 61 6e 69 6e 67 66 75 6c |ck of meaningful| 000013b0 1a 20 6c 61 62 65 6c 73 1a 20 61 6e 64 0d 76 61 |. labels. and.va| 000013c0 72 69 61 62 6c 65 20 6e 61 6d 65 73 1a 20 69 6e |riable names. in| 000013d0 1a 20 74 68 69 73 1a 20 70 72 6f 67 72 61 6d 21 |. this. program!| 000013e0 29 2e 1a 20 59 6f 75 1a 20 6d 61 79 20 70 72 65 |).. You. may pre| 000013f0 66 65 72 20 74 6f 20 75 73 65 20 74 68 65 20 64 |fer to use the d| 00001400 75 6d 70 20 66 72 6f 6d 0d 22 44 69 61 67 72 61 |ump from."Diagra| 00001410 6d 22 2c 20 77 68 69 63 68 20 49 20 68 61 76 65 |m", which I have| 00001420 20 61 6c 73 6f 20 69 6d 70 72 6f 76 65 64 2e 20 | also improved. | 00001430 54 68 69 73 20 69 73 20 74 77 69 63 65 20 61 73 |This is twice as| 00001440 20 66 61 73 74 20 61 73 20 6d 69 6e 65 2c 20 62 | fast as mine, b| 00001450 75 74 2c 0d 74 68 65 20 68 65 69 67 68 74 20 6f |ut,.the height o| 00001460 66 20 74 68 65 20 70 72 69 6e 74 6f 75 74 20 69 |f the printout i| 00001470 73 20 32 35 25 20 6c 65 73 73 2e 0d 20 20 20 20 |s 25% less.. | 00001480 20 20 20 4e 6f 77 20 6a 75 73 74 20 73 69 74 20 | Now just sit | 00001490 62 61 63 6b 20 61 6e 64 20 77 61 69 74 20 66 6f |back and wait fo| 000014a0 72 20 74 68 65 20 72 65 73 75 6c 74 2e 20 54 68 |r the result. Th| 000014b0 69 73 20 63 6f 75 6c 64 20 74 61 6b 65 20 75 70 |is could take up| 000014c0 20 74 6f 20 34 35 0d 6d 69 6e 75 74 65 73 20 69 | to 45.minutes i| 000014d0 66 20 79 6f 75 20 61 72 65 20 75 73 69 6e 67 1a |f you are using.| 000014e0 20 6d 6f 64 65 20 30 2c 20 73 6f 20 62 65 20 70 | mode 0, so be p| 000014f0 61 74 69 65 6e 74 20 69 66 20 74 68 65 20 63 6f |atient if the co| 00001500 6d 70 75 74 65 72 20 61 70 70 65 61 72 73 20 74 |mputer appears t| 00001510 6f 0d 62 65 20 64 6f 69 6e 67 20 6e 6f 74 68 69 |o.be doing nothi| 00001520 6e 67 20 66 6f 72 20 61 20 6c 6f 6e 67 20 70 65 |ng for a long pe| 00001530 72 69 6f 64 2e 0d 20 20 20 20 20 20 20 41 6c 6c |riod.. All| 00001540 20 74 68 65 73 65 20 70 61 72 61 6d 65 74 65 72 | these parameter| 00001550 73 20 77 69 6c 6c 20 73 6f 75 6e 64 1a 20 72 61 |s will sound. ra| 00001560 74 68 65 72 1a 20 63 6f 6d 70 6c 69 63 61 74 65 |ther. complicate| 00001570 64 1a 20 69 66 1a 20 79 6f 75 1a 20 68 61 76 65 |d. if. you. have| 00001580 0d 6e 65 76 65 72 1a 20 61 63 74 75 61 6c 6c 79 |.never. actually| 00001590 1a 20 73 65 65 6e 20 61 6e 20 61 75 74 6f 73 74 |. seen an autost| 000015a0 65 72 65 6f 67 72 61 6d 20 62 65 66 6f 72 65 2c |ereogram before,| 000015b0 20 62 75 74 20 64 6f 6e 27 74 20 77 6f 72 72 79 | but don't worry| 000015c0 20 2d 20 6a 75 73 74 20 75 73 65 0d 6d 79 20 73 | - just use.my s| 000015d0 75 67 67 65 73 74 65 64 20 76 61 6c 75 65 73 1a |uggested values.| 000015e0 20 74 6f 1a 20 67 65 74 1a 20 79 6f 75 1a 20 73 | to. get. you. s| 000015f0 74 61 72 74 65 64 2e 1a 20 54 68 65 6e 20 79 6f |tarted.. Then yo| 00001600 75 20 63 61 6e 20 74 72 79 20 76 61 72 79 69 6e |u can try varyin| 00001610 67 20 74 68 65 6d 0d 6c 61 74 65 72 2c 20 6f 6e |g them.later, on| 00001620 65 20 61 74 20 61 20 74 69 6d 65 2c 20 74 6f 20 |e at a time, to | 00001630 73 65 65 20 74 68 65 20 65 66 66 65 63 74 73 2e |see the effects.| 00001640 0d 20 20 20 20 20 20 20 59 6f 75 20 6d 61 79 20 |. You may | 00001650 62 65 20 61 62 6c 65 20 74 6f 1a 20 73 65 65 1a |be able to. see.| 00001660 20 74 68 65 20 65 66 66 65 63 74 20 6f 6e 20 79 | the effect on y| 00001670 6f 75 72 20 54 56 2f 6d 6f 6e 69 74 6f 72 20 73 |our TV/monitor s| 00001680 63 72 65 65 6e 20 69 66 20 69 74 0d 69 73 20 6e |creen if it.is n| 00001690 6f 74 20 74 6f 6f 20 66 6c 69 63 6b 65 72 79 2c |ot too flickery,| 000016a0 20 74 68 6f 75 67 68 20 69 74 20 69 73 1a 20 67 | though it is. g| 000016b0 65 6e 65 72 61 6c 6c 79 20 65 61 73 69 65 72 20 |enerally easier | 000016c0 6f 6e 20 70 61 70 65 72 2e 20 4d 79 20 70 72 65 |on paper. My pre| 000016d0 66 65 72 72 65 64 0d 6d 65 74 68 6f 64 20 69 73 |ferred.method is| 000016e0 20 74 6f 20 73 74 61 72 65 20 62 6c 61 6e 6b 6c | to stare blankl| 000016f0 79 20 61 74 20 74 68 65 20 70 61 67 65 2c 1a 20 |y at the page,. | 00001700 61 6e 64 1a 20 73 6c 6f 77 6c 79 20 72 65 66 6f |and. slowly refo| 00001710 63 75 73 20 6d 79 20 65 79 65 73 20 75 6e 74 69 |cus my eyes unti| 00001720 6c 0d 74 77 6f 20 63 6f 6c 75 6d 6e 73 20 6f 66 |l.two columns of| 00001730 20 74 68 65 20 72 65 70 65 61 74 69 6e 67 20 70 | the repeating p| 00001740 61 74 74 65 72 6e 20 61 70 70 65 61 72 20 74 6f |attern appear to| 00001750 20 6d 65 72 67 65 20 69 6e 74 6f 1a 20 6f 6e 65 | merge into. one| 00001760 2e 1a 20 54 68 65 6e 2c 1a 20 69 66 0d 79 6f 75 |.. Then,. if.you| 00001770 1a 20 63 61 6e 1a 20 68 6f 6c 64 1a 20 79 6f 75 |. can. hold. you| 00001780 72 1a 20 66 6f 63 75 73 1a 20 6c 6f 6e 67 1a 20 |r. focus. long. | 00001790 65 6e 6f 75 67 68 20 6f 6e 20 74 68 65 20 6d 65 |enough on the me| 000017a0 72 67 65 64 20 70 61 74 74 65 72 6e 2c 20 74 68 |rged pattern, th| 000017b0 65 20 69 6d 61 67 65 0d 73 68 6f 75 6c 64 20 6c |e image.should l| 000017c0 69 66 74 20 6f 75 74 2e 0d 20 20 20 20 20 20 20 |ift out.. | 000017d0 4f 74 68 65 72 20 70 65 6f 70 6c 65 20 70 72 65 |Other people pre| 000017e0 66 65 72 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e |fer the followin| 000017f0 67 1a 20 6d 65 74 68 6f 64 3a 1a 20 48 6f 6c 64 |g. method:. Hold| 00001800 1a 20 74 68 65 20 70 61 70 65 72 20 61 67 61 69 |. the paper agai| 00001810 6e 73 74 0d 79 6f 75 72 20 66 61 63 65 2c 20 61 |nst.your face, a| 00001820 6e 64 20 73 74 61 72 65 20 74 68 72 6f 75 67 68 |nd stare through| 00001830 20 69 74 20 62 6c 61 6e 6b 6c 79 2e 20 53 6c 6f | it blankly. Slo| 00001840 77 6c 79 1a 20 6d 6f 76 65 1a 20 74 68 65 20 70 |wly. move. the p| 00001850 61 70 65 72 20 61 77 61 79 20 66 72 6f 6d 0d 79 |aper away from.y| 00001860 6f 75 72 20 66 61 63 65 20 77 69 74 68 6f 75 74 |our face without| 00001870 20 61 6c 74 65 72 69 6e 67 20 79 6f 75 72 20 66 | altering your f| 00001880 6f 63 75 73 2c 20 75 6e 74 69 6c 20 74 68 65 20 |ocus, until the | 00001890 69 6d 61 67 65 20 61 70 70 65 61 72 73 2c 1a 20 |image appears,. | 000018a0 74 68 65 6e 20 77 61 69 74 0d 75 6e 74 69 6c 20 |then wait.until | 000018b0 69 74 20 62 65 63 6f 6d 65 73 20 63 6c 65 61 72 |it becomes clear| 000018c0 2e 20 59 6f 75 20 77 69 6c 6c 20 68 61 76 65 20 |. You will have | 000018d0 74 6f 20 63 6f 6e 63 65 6e 74 72 61 74 65 20 76 |to concentrate v| 000018e0 65 72 79 20 68 61 72 64 1a 20 74 6f 20 70 72 65 |ery hard. to pre| 000018f0 76 65 6e 74 0d 79 6f 75 72 73 65 6c 66 20 66 72 |vent.yourself fr| 00001900 6f 6d 20 72 65 66 6f 63 75 73 69 6e 67 20 6f 6e |om refocusing on| 00001910 20 74 68 65 20 69 6d 61 67 65 20 61 73 20 69 74 | the image as it| 00001920 20 61 70 70 65 61 72 73 2e 0d 20 20 20 20 20 20 | appears.. | 00001930 20 41 6e 6f 74 68 65 72 20 6d 65 74 68 6f 64 20 | Another method | 00001940 69 73 20 74 6f 20 70 6c 61 63 65 20 61 20 72 65 |is to place a re| 00001950 66 6c 65 63 74 69 76 65 20 73 75 72 66 61 63 65 |flective surface| 00001960 20 6f 76 65 72 20 20 74 68 65 20 70 61 67 65 2c | over the page,| 00001970 20 61 6e 64 0d 66 6f 63 75 73 20 6f 6e 20 79 6f | and.focus on yo| 00001980 75 72 20 72 65 66 6c 65 63 74 69 6f 6e 20 28 61 |ur reflection (a| 00001990 1a 20 54 56 2f 6d 6f 6e 69 74 6f 72 1a 20 73 63 |. TV/monitor. sc| 000019a0 72 65 65 6e 1a 20 6d 69 67 68 74 1a 20 61 6c 73 |reen. might. als| 000019b0 6f 20 77 6f 72 6b 29 2e 20 49 20 68 61 76 65 0d |o work). I have.| 000019c0 6e 65 76 65 72 20 66 6f 75 6e 64 20 74 68 69 73 |never found this| 000019d0 20 6d 65 74 68 6f 64 20 75 73 65 66 75 6c 20 6d | method useful m| 000019e0 79 73 65 6c 66 2e 0d 20 20 20 20 20 20 20 59 6f |yself.. Yo| 000019f0 75 20 77 69 6c 6c 20 70 72 6f 62 61 62 6c 79 20 |u will probably | 00001a00 66 69 6e 64 20 74 68 61 74 1a 20 79 6f 75 1a 20 |find that. you. | 00001a10 68 61 76 65 1a 20 74 6f 20 73 74 61 72 65 20 61 |have. to stare a| 00001a20 74 20 74 68 65 6d 20 66 6f 72 20 61 20 6c 6f 6e |t them for a lon| 00001a30 67 0d 74 69 6d 65 20 62 65 66 6f 72 65 20 79 6f |g.time before yo| 00001a40 75 20 73 65 65 20 74 68 65 20 65 66 66 65 63 74 |u see the effect| 00001a50 20 66 6f 72 20 74 68 65 1a 20 66 69 72 73 74 1a | for the. first.| 00001a60 20 74 69 6d 65 1a 20 28 69 74 1a 20 74 6f 6f 6b | time. (it. took| 00001a70 1a 20 6d 65 20 73 65 76 65 72 61 6c 0d 68 6f 75 |. me several.hou| 00001a80 72 73 29 2c 20 62 75 74 20 69 74 20 69 73 20 77 |rs), but it is w| 00001a90 65 6c 6c 20 77 6f 72 74 68 20 74 68 65 20 77 61 |ell worth the wa| 00001aa0 69 74 2e 20 49 66 20 79 6f 75 20 73 74 69 6c 6c |it. If you still| 00001ab0 20 63 61 6e 27 74 20 73 65 65 1a 20 74 68 65 6d | can't see. them| 00001ac0 2c 20 64 6f 6e 27 74 0d 77 6f 72 72 79 20 2d 20 |, don't.worry - | 00001ad0 61 70 70 61 72 65 6e 74 6c 79 20 61 6e 20 65 73 |apparently an es| 00001ae0 74 69 6d 61 74 65 64 20 31 30 25 20 6f 66 20 74 |timated 10% of t| 00001af0 68 65 20 70 6f 70 75 6c 61 74 69 6f 6e 20 63 61 |he population ca| 00001b00 6e 20 6e 65 76 65 72 20 73 65 65 20 74 68 65 6d |n never see them| 00001b10 2e 0d 20 20 20 20 20 20 20 54 68 65 20 61 75 74 |.. The aut| 00001b20 6f 73 74 65 72 65 6f 67 72 61 6d 73 20 70 72 6f |ostereograms pro| 00001b30 64 75 63 65 64 20 62 79 20 74 68 69 73 1a 20 70 |duced by this. p| 00001b40 72 6f 67 72 61 6d 1a 20 61 72 65 20 6e 6f 74 20 |rogram. are not | 00001b50 61 73 20 65 66 66 65 63 74 69 76 65 0d 61 73 20 |as effective.as | 00001b60 74 68 65 20 63 6f 6d 6d 65 72 63 69 61 6c 20 6f |the commercial o| 00001b70 6e 65 73 20 28 74 68 6f 75 67 68 20 74 68 65 79 |nes (though they| 00001b80 20 6d 61 79 1a 20 62 65 20 65 61 73 69 65 72 20 | may. be easier | 00001b90 74 6f 20 73 65 65 29 2e 20 54 68 69 73 20 69 73 |to see). This is| 00001ba0 20 70 61 72 74 6c 79 0d 62 65 63 61 75 73 65 20 | partly.because | 00001bb0 74 68 65 79 20 61 72 65 20 62 6c 61 63 6b 20 61 |they are black a| 00001bc0 6e 64 20 77 68 69 74 65 2c 20 61 6e 64 20 74 68 |nd white, and th| 00001bd0 65 1a 20 70 61 74 74 65 72 6e 73 1a 20 61 72 65 |e. patterns. are| 00001be0 20 6e 6f 74 20 61 74 74 72 61 63 74 69 76 65 20 | not attractive | 00001bf0 69 6e 0d 74 68 65 6d 73 65 6c 76 65 73 2c 1a 20 |in.themselves,. | 00001c00 61 73 1a 20 74 68 65 79 1a 20 61 72 65 1a 20 67 |as. they. are. g| 00001c10 65 6e 65 72 61 74 65 64 1a 20 72 61 6e 64 6f 6d |enerated. random| 00001c20 6c 79 2e 1a 20 48 6f 77 65 76 65 72 2c 20 61 6e |ly.. However, an| 00001c30 6f 74 68 65 72 20 73 65 72 69 6f 75 73 0d 6c 69 |other serious.li| 00001c40 6d 69 74 61 74 69 6f 6e 20 69 73 20 74 68 61 74 |mitation is that| 00001c50 20 74 68 65 20 69 6d 61 67 65 73 20 79 6f 75 20 | the images you | 00001c60 73 65 65 1a 20 61 72 65 1a 20 61 6c 77 61 79 73 |see. are. always| 00001c70 20 70 61 72 61 6c 6c 65 6c 20 74 6f 20 74 68 65 | parallel to the| 00001c80 20 70 61 70 65 72 20 2d 0d 74 68 65 79 1a 20 63 | paper -.they. c| 00001c90 61 6e 1a 20 6e 65 76 65 72 20 73 6c 6f 70 65 20 |an. never slope | 00001ca0 74 6f 77 61 72 64 73 20 6f 72 20 61 77 61 79 20 |towards or away | 00001cb0 66 72 6f 6d 20 79 6f 75 2e 1a 20 49 1a 20 68 61 |from you.. I. ha| 00001cc0 76 65 1a 20 74 72 69 65 64 1a 20 74 6f 1a 20 6d |ve. tried. to. m| 00001cd0 61 6b 65 0d 73 6c 6f 70 69 6e 67 20 73 75 72 66 |ake.sloping surf| 00001ce0 61 63 65 73 20 75 73 69 6e 67 20 61 20 22 73 74 |aces using a "st| 00001cf0 61 69 72 63 61 73 65 22 20 65 66 66 65 63 74 20 |aircase" effect | 00001d00 2d 20 73 65 76 65 72 61 6c 20 6e 61 72 72 6f 77 |- several narrow| 00001d10 20 62 61 6e 64 73 20 6f 66 20 6d 6f 64 65 0d 32 | bands of mode.2| 00001d20 20 63 6f 6c 6f 75 72 73 2c 20 77 69 74 68 1a 20 | colours, with. | 00001d30 63 6f 6e 73 65 63 75 74 69 76 65 20 65 6c 65 76 |consecutive elev| 00001d40 61 74 69 6f 6e 20 6e 75 6d 62 65 72 73 2e 20 48 |ation numbers. H| 00001d50 6f 77 65 76 65 72 2c 20 74 68 65 20 72 65 73 6f |owever, the reso| 00001d60 6c 75 74 69 6f 6e 20 6f 66 0d 6d 6f 64 65 20 30 |lution of.mode 0| 00001d70 20 67 72 61 70 68 69 63 73 20 77 61 73 20 6e 6f | graphics was no| 00001d80 74 20 72 65 61 6c 6c 79 20 65 6e 6f 75 67 68 20 |t really enough | 00001d90 74 6f 20 6d 61 6b 65 20 74 68 69 73 20 73 75 63 |to make this suc| 00001da0 63 65 73 73 66 75 6c 2e 0d 20 20 20 20 20 20 20 |cessful.. | 00001db0 59 6f 75 20 6d 61 79 20 77 69 73 68 20 74 6f 20 |You may wish to | 00001dc0 70 72 6f 64 75 63 65 1a 20 61 6e 1a 20 61 75 74 |produce. an. aut| 00001dd0 6f 73 74 65 72 65 6f 67 72 61 6d 1a 20 6f 66 1a |ostereogram. of.| 00001de0 20 61 1a 20 77 6f 72 64 2c 1a 20 6f 72 20 73 68 | a. word,. or sh| 00001df0 6f 72 74 0d 70 68 72 61 73 65 2e 1a 20 49 66 1a |ort.phrase.. If.| 00001e00 20 73 6f 2c 1a 20 49 20 68 61 76 65 20 73 65 6e | so,. I have sen| 00001e10 74 20 69 6e 20 61 20 20 70 72 6f 67 72 61 6d 20 |t in a program | 00001e20 74 6f 20 70 72 69 6e 74 1a 20 6c 61 72 67 65 1a |to print. large.| 00001e30 20 74 65 78 74 1a 20 6f 6e 1a 20 74 68 65 0d 73 | text. on. the.s| 00001e40 63 72 65 65 6e 2e 20 54 68 69 73 20 69 73 20 62 |creen. This is b| 00001e50 61 73 65 64 1a 20 6f 6e 1a 20 74 68 65 1a 20 42 |ased. on. the. B| 00001e60 61 6e 6e 65 72 20 50 72 69 6e 74 69 6e 67 20 70 |anner Printing p| 00001e70 72 6f 67 72 61 6d 20 66 72 6f 6d 20 45 6c 65 63 |rogram from Elec| 00001e80 74 72 6f 6e 20 55 73 65 72 0d 28 4a 75 6e 65 20 |tron User.(June | 00001e90 31 39 38 39 29 2c 20 61 6e 64 20 69 73 20 64 65 |1989), and is de| 00001ea0 73 63 72 69 62 65 64 20 65 6c 73 65 77 68 65 72 |scribed elsewher| 00001eb0 65 20 6f 6e 20 74 68 65 20 64 69 73 63 2e 0d 20 |e on the disc.. | 00001ec0 20 20 20 20 20 20 49 66 20 79 6f 75 20 70 72 6f | If you pro| 00001ed0 64 75 63 65 20 61 6e 20 69 6d 70 72 65 73 73 69 |duce an impressi| 00001ee0 76 65 1a 20 69 6d 61 67 65 2c 20 73 65 6e 64 20 |ve. image, send | 00001ef0 69 74 20 69 6e 21 20 50 65 72 68 61 70 73 20 74 |it in! Perhaps t| 00001f00 68 69 73 20 63 6f 75 6c 64 0d 62 65 20 74 68 65 |his could.be the| 00001f10 20 62 61 73 69 73 20 6f 66 20 61 20 66 75 74 75 | basis of a futu| 00001f20 72 65 1a 20 63 6f 6d 70 65 74 69 74 69 6f 6e 2c |re. competition,| 00001f30 1a 20 28 69 2e 65 20 22 57 68 61 74 20 6f 62 6a |. (i.e "What obj| 00001f40 65 63 74 20 69 73 20 73 68 6f 77 6e 20 69 6e 20 |ect is shown in | 00001f50 74 68 69 73 0d 61 75 74 6f 73 74 65 72 65 6f 67 |this.autostereog| 00001f60 72 61 6d 3f 22 2c 20 77 69 74 68 20 74 68 65 20 |ram?", with the | 00001f70 73 6f 75 72 63 65 20 70 69 63 74 75 72 65 20 69 |source picture i| 00001f80 6e 63 6c 75 64 65 64 20 6f 6e 20 74 68 65 20 66 |ncluded on the f| 00001f90 6f 6c 6c 6f 77 69 6e 67 20 64 69 73 63 29 0d 20 |ollowing disc). | 00001fa0 20 20 20 20 20 20 49 20 68 61 76 65 20 69 6e 63 | I have inc| 00001fb0 6c 75 64 65 64 20 61 6e 20 65 78 61 6d 70 6c 65 |luded an example| 00001fc0 1a 20 6f 66 1a 20 61 6e 1a 20 61 75 74 6f 73 74 |. of. an. autost| 00001fd0 65 72 65 6f 67 72 61 6d 20 6f 6e 20 74 68 65 20 |ereogram on the | 00001fe0 64 69 73 63 2e 20 54 68 65 0d 73 6f 75 72 63 65 |disc. The.source| 00001ff0 20 70 69 63 74 75 72 65 20 69 73 20 61 6c 73 6f | picture is also| 00002000 20 74 68 65 72 65 2c 20 62 75 74 20 79 6f 75 20 | there, but you | 00002010 6d 61 79 20 70 72 65 66 65 72 20 6e 6f 74 20 74 |may prefer not t| 00002020 6f 20 73 65 65 20 74 68 69 73 20 75 6e 74 69 6c |o see this until| 00002030 20 79 6f 75 0d 68 61 76 65 20 68 61 64 20 61 20 | you.have had a | 00002040 67 6f 20 61 74 20 73 65 65 69 6e 67 20 74 68 65 |go at seeing the| 00002050 20 69 6d 61 67 65 2e 20 47 6f 6f 64 20 6c 75 63 | image. Good luc| 00002060 6b 21 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |k!. | 00002070 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00002090 20 20 20 20 20 20 4d 61 74 74 68 65 77 20 46 6f | Matthew Fo| 000020a0 72 64 2e 0d |rd..| 000020a4
ASG/Text.m0
ASG/Text.m1
ASG/Text.m2
ASG/Text.m4
ASG/Text.m5
.