Home » Archimedes archive » Acorn User » AU 1994-10.adf » !StarInfo_StarInfo » VanMourik/BreederTex
VanMourik/BreederTex
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 » Archimedes archive » Acorn User » AU 1994-10.adf » !StarInfo_StarInfo |
| Filename: | VanMourik/BreederTex |
| Read OK: | ✔ |
| File size: | 0721 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
THE BREEDER CELLULAR AUTOMATON ------------------------------ TWO GENERATIONS OF THE AUTOMATON ARE ALWAYS ON DISPLAY. THE CURRENT GENERATED PATTERN IS BASED ON ITS STATIC TWIN. THE STATIC PATTERN IS THE GENERATION PREVIOUS TO THE CURRENT PATTERN. EVERY PIXEL IS PROCESSED IN AN EVALUATION ALGORITHM. IN THIS AUTOMATON IT TAKES THE FOLLOWING FORM; (P1+P2+P3+P4)MODT% (P1+P2+P3+P4) ARE THE COLOUR VALUES OF THE 4 NEIGHBOURING PIXELS. THE VALUE OF T% DEPENDS ON THE NUMBER OF COLOURS USED. THE RESULT OF THE EQUATION BECOMES THE COLOUR OF THE PIXEL UNDER EVALUATION IN THE CURRENT GENERATED PATTERN. THE SHAPE PRESENT BEFORE THE FIRST GENERATED PATTERN IS ARBITRARY. IT TURNS OUT THAT WHATEVER SEED PATTERN IS USED, ITS SHAPE APPEARS IN MULTIPLES AFTER SPECIFIC NUMBERS OF ITERATIONS. HENCE ITS NAME 'BREEDER'. IN THIS ROUTINE A COLOURED CIRCLE AND DISC ARE USED AS SEED SHAPES. BECAUSE OF THE SYMMETRICAL PROPERTIES OF THE CIRCLE AND DISC ONLY 1/8 OF THE PATTERN IS EVALUATED. SO AFTER A PIXEL'S COLOUR IS CALCULATED, THE SAME COLOUR-VALUE IS USED TO PLOT 8 PIXELS. THESE ARE (X,Y) (-X,Y) (X,-Y) (-X,-Y) (Y,X) (-Y,X) (Y,-X) (-Y,-X). WHEN THE ROUTINE IS STARTED, ONE IS GIVEN THE CHOICE OF EITHER 2, 4 OR 16 COLOURS USED IN THE PATTERN. THIS BECOMES THE VALUE OF T% USED IN THE EVALUATION ALGORITHM. THERE IS ALSO A CHOICE OF RESOLUTIONS. MORE COLOURS RESULTS IN AN INCREASED COMPLICATION OF THE PATTERNS. THIS IS JUST ONE EXAMPLE OF MANY POSSIBLE EVALUATION ALGORITHMS IN CELLULAR AUTOMATA. THE SECRET IS TO EXPERIMENT. SOMETIMES BEAUTIFUL PATTERNS EMERGE AND UNEXPECTED/INTERESTING PROCESSES EVOLVE. JEAN VAN MOURIK THIRD MILLENNIUM MILL COTTAGE DERWYDD AMMANFORD DYFED SA18 3LQ UNITED KINGDOM
00000000 0a 20 20 20 54 48 45 20 42 52 45 45 44 45 52 20 |. THE BREEDER | 00000010 43 45 4c 4c 55 4c 41 52 20 41 55 54 4f 4d 41 54 |CELLULAR AUTOMAT| 00000020 4f 4e 0a 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |ON. ----------| 00000030 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00000040 2d 2d 2d 2d 0a 0a 20 20 20 54 57 4f 20 47 45 4e |----.. TWO GEN| 00000050 45 52 41 54 49 4f 4e 53 20 4f 46 20 54 48 45 20 |ERATIONS OF THE | 00000060 41 55 54 4f 4d 41 54 4f 4e 20 41 52 45 20 41 4c |AUTOMATON ARE AL| 00000070 57 41 59 53 20 4f 4e 20 44 49 53 50 4c 41 59 2e |WAYS ON DISPLAY.| 00000080 20 20 54 48 45 20 43 55 52 52 45 4e 54 0a 20 20 | THE CURRENT. | 00000090 20 47 45 4e 45 52 41 54 45 44 20 50 41 54 54 45 | GENERATED PATTE| 000000a0 52 4e 20 49 53 20 42 41 53 45 44 20 4f 4e 20 49 |RN IS BASED ON I| 000000b0 54 53 20 53 54 41 54 49 43 20 54 57 49 4e 2e 20 |TS STATIC TWIN. | 000000c0 20 0a 20 20 20 54 48 45 20 53 54 41 54 49 43 20 | . THE STATIC | 000000d0 50 41 54 54 45 52 4e 20 49 53 20 54 48 45 20 47 |PATTERN IS THE G| 000000e0 45 4e 45 52 41 54 49 4f 4e 20 50 52 45 56 49 4f |ENERATION PREVIO| 000000f0 55 53 20 54 4f 20 54 48 45 20 43 55 52 52 45 4e |US TO THE CURREN| 00000100 54 20 50 41 54 54 45 52 4e 2e 0a 20 20 20 45 56 |T PATTERN.. EV| 00000110 45 52 59 20 50 49 58 45 4c 20 49 53 20 50 52 4f |ERY PIXEL IS PRO| 00000120 43 45 53 53 45 44 20 49 4e 20 41 4e 20 45 56 41 |CESSED IN AN EVA| 00000130 4c 55 41 54 49 4f 4e 20 41 4c 47 4f 52 49 54 48 |LUATION ALGORITH| 00000140 4d 2e 0a 20 20 20 49 4e 20 54 48 49 53 20 41 55 |M.. IN THIS AU| 00000150 54 4f 4d 41 54 4f 4e 20 49 54 20 54 41 4b 45 53 |TOMATON IT TAKES| 00000160 20 54 48 45 20 46 4f 4c 4c 4f 57 49 4e 47 20 46 | THE FOLLOWING F| 00000170 4f 52 4d 3b 20 28 50 31 2b 50 32 2b 50 33 2b 50 |ORM; (P1+P2+P3+P| 00000180 34 29 4d 4f 44 54 25 0a 20 20 20 28 50 31 2b 50 |4)MODT%. (P1+P| 00000190 32 2b 50 33 2b 50 34 29 20 41 52 45 20 54 48 45 |2+P3+P4) ARE THE| 000001a0 20 43 4f 4c 4f 55 52 20 56 41 4c 55 45 53 20 4f | COLOUR VALUES O| 000001b0 46 20 54 48 45 20 34 20 4e 45 49 47 48 42 4f 55 |F THE 4 NEIGHBOU| 000001c0 52 49 4e 47 20 50 49 58 45 4c 53 2e 0a 20 20 20 |RING PIXELS.. | 000001d0 54 48 45 20 56 41 4c 55 45 20 4f 46 20 54 25 20 |THE VALUE OF T% | 000001e0 44 45 50 45 4e 44 53 20 4f 4e 20 54 48 45 20 4e |DEPENDS ON THE N| 000001f0 55 4d 42 45 52 20 4f 46 20 43 4f 4c 4f 55 52 53 |UMBER OF COLOURS| 00000200 20 55 53 45 44 2e 0a 20 20 20 54 48 45 20 52 45 | USED.. THE RE| 00000210 53 55 4c 54 20 4f 46 20 54 48 45 20 45 51 55 41 |SULT OF THE EQUA| 00000220 54 49 4f 4e 20 42 45 43 4f 4d 45 53 20 54 48 45 |TION BECOMES THE| 00000230 20 43 4f 4c 4f 55 52 20 4f 46 20 54 48 45 20 50 | COLOUR OF THE P| 00000240 49 58 45 4c 20 55 4e 44 45 52 20 0a 20 20 20 45 |IXEL UNDER . E| 00000250 56 41 4c 55 41 54 49 4f 4e 20 49 4e 20 54 48 45 |VALUATION IN THE| 00000260 20 43 55 52 52 45 4e 54 20 47 45 4e 45 52 41 54 | CURRENT GENERAT| 00000270 45 44 20 50 41 54 54 45 52 4e 2e 0a 20 20 20 54 |ED PATTERN.. T| 00000280 48 45 20 53 48 41 50 45 20 50 52 45 53 45 4e 54 |HE SHAPE PRESENT| 00000290 20 42 45 46 4f 52 45 20 54 48 45 20 46 49 52 53 | BEFORE THE FIRS| 000002a0 54 20 47 45 4e 45 52 41 54 45 44 20 50 41 54 54 |T GENERATED PATT| 000002b0 45 52 4e 20 49 53 20 41 52 42 49 54 52 41 52 59 |ERN IS ARBITRARY| 000002c0 2e 0a 20 20 20 49 54 20 54 55 52 4e 53 20 4f 55 |.. IT TURNS OU| 000002d0 54 20 54 48 41 54 20 57 48 41 54 45 56 45 52 20 |T THAT WHATEVER | 000002e0 53 45 45 44 20 50 41 54 54 45 52 4e 20 49 53 20 |SEED PATTERN IS | 000002f0 55 53 45 44 2c 20 49 54 53 20 53 48 41 50 45 20 |USED, ITS SHAPE | 00000300 41 50 50 45 41 52 53 20 49 4e 20 0a 20 20 20 4d |APPEARS IN . M| 00000310 55 4c 54 49 50 4c 45 53 20 41 46 54 45 52 20 53 |ULTIPLES AFTER S| 00000320 50 45 43 49 46 49 43 20 4e 55 4d 42 45 52 53 20 |PECIFIC NUMBERS | 00000330 4f 46 20 49 54 45 52 41 54 49 4f 4e 53 2e 20 20 |OF ITERATIONS. | 00000340 48 45 4e 43 45 20 49 54 53 20 4e 41 4d 45 20 27 |HENCE ITS NAME '| 00000350 42 52 45 45 44 45 52 27 2e 0a 20 20 20 49 4e 20 |BREEDER'.. IN | 00000360 54 48 49 53 20 52 4f 55 54 49 4e 45 20 41 20 43 |THIS ROUTINE A C| 00000370 4f 4c 4f 55 52 45 44 20 43 49 52 43 4c 45 20 41 |OLOURED CIRCLE A| 00000380 4e 44 20 44 49 53 43 20 41 52 45 20 55 53 45 44 |ND DISC ARE USED| 00000390 20 41 53 20 53 45 45 44 20 53 48 41 50 45 53 2e | AS SEED SHAPES.| 000003a0 0a 20 20 20 42 45 43 41 55 53 45 20 4f 46 20 54 |. BECAUSE OF T| 000003b0 48 45 20 53 59 4d 4d 45 54 52 49 43 41 4c 20 50 |HE SYMMETRICAL P| 000003c0 52 4f 50 45 52 54 49 45 53 20 4f 46 20 54 48 45 |ROPERTIES OF THE| 000003d0 20 43 49 52 43 4c 45 20 41 4e 44 20 44 49 53 43 | CIRCLE AND DISC| 000003e0 20 4f 4e 4c 59 20 31 2f 38 0a 20 20 20 4f 46 20 | ONLY 1/8. OF | 000003f0 54 48 45 20 50 41 54 54 45 52 4e 20 49 53 20 45 |THE PATTERN IS E| 00000400 56 41 4c 55 41 54 45 44 2e 20 20 53 4f 20 41 46 |VALUATED. SO AF| 00000410 54 45 52 20 41 20 50 49 58 45 4c 27 53 20 43 4f |TER A PIXEL'S CO| 00000420 4c 4f 55 52 20 49 53 20 43 41 4c 43 55 4c 41 54 |LOUR IS CALCULAT| 00000430 45 44 2c 0a 20 20 20 54 48 45 20 53 41 4d 45 20 |ED,. THE SAME | 00000440 43 4f 4c 4f 55 52 2d 56 41 4c 55 45 20 49 53 20 |COLOUR-VALUE IS | 00000450 55 53 45 44 20 54 4f 20 50 4c 4f 54 20 38 20 50 |USED TO PLOT 8 P| 00000460 49 58 45 4c 53 2e 20 0a 20 20 20 54 48 45 53 45 |IXELS. . THESE| 00000470 20 41 52 45 20 28 58 2c 59 29 20 20 28 2d 58 2c | ARE (X,Y) (-X,| 00000480 59 29 20 20 28 58 2c 2d 59 29 20 20 28 2d 58 2c |Y) (X,-Y) (-X,| 00000490 2d 59 29 20 20 28 59 2c 58 29 20 20 28 2d 59 2c |-Y) (Y,X) (-Y,| 000004a0 58 29 20 20 28 59 2c 2d 58 29 20 20 28 2d 59 2c |X) (Y,-X) (-Y,| 000004b0 2d 58 29 2e 0a 20 20 20 57 48 45 4e 20 54 48 45 |-X).. WHEN THE| 000004c0 20 52 4f 55 54 49 4e 45 20 49 53 20 53 54 41 52 | ROUTINE IS STAR| 000004d0 54 45 44 2c 20 4f 4e 45 20 49 53 20 47 49 56 45 |TED, ONE IS GIVE| 000004e0 4e 20 54 48 45 20 43 48 4f 49 43 45 20 4f 46 20 |N THE CHOICE OF | 000004f0 45 49 54 48 45 52 20 32 2c 20 34 20 4f 52 20 31 |EITHER 2, 4 OR 1| 00000500 36 0a 20 20 20 43 4f 4c 4f 55 52 53 20 55 53 45 |6. COLOURS USE| 00000510 44 20 49 4e 20 54 48 45 20 50 41 54 54 45 52 4e |D IN THE PATTERN| 00000520 2e 20 20 54 48 49 53 20 42 45 43 4f 4d 45 53 20 |. THIS BECOMES | 00000530 54 48 45 20 56 41 4c 55 45 20 4f 46 20 54 25 20 |THE VALUE OF T% | 00000540 55 53 45 44 20 49 4e 20 54 48 45 0a 20 20 20 45 |USED IN THE. E| 00000550 56 41 4c 55 41 54 49 4f 4e 20 41 4c 47 4f 52 49 |VALUATION ALGORI| 00000560 54 48 4d 2e 20 20 20 54 48 45 52 45 20 49 53 20 |THM. THERE IS | 00000570 41 4c 53 4f 20 41 20 43 48 4f 49 43 45 20 4f 46 |ALSO A CHOICE OF| 00000580 20 52 45 53 4f 4c 55 54 49 4f 4e 53 2e 0a 20 20 | RESOLUTIONS.. | 00000590 20 4d 4f 52 45 20 43 4f 4c 4f 55 52 53 20 52 45 | MORE COLOURS RE| 000005a0 53 55 4c 54 53 20 49 4e 20 41 4e 20 49 4e 43 52 |SULTS IN AN INCR| 000005b0 45 41 53 45 44 20 43 4f 4d 50 4c 49 43 41 54 49 |EASED COMPLICATI| 000005c0 4f 4e 20 4f 46 20 54 48 45 20 50 41 54 54 45 52 |ON OF THE PATTER| 000005d0 4e 53 2e 0a 20 20 20 0a 20 20 20 54 48 49 53 20 |NS.. . THIS | 000005e0 49 53 20 4a 55 53 54 20 4f 4e 45 20 45 58 41 4d |IS JUST ONE EXAM| 000005f0 50 4c 45 20 4f 46 20 4d 41 4e 59 20 50 4f 53 53 |PLE OF MANY POSS| 00000600 49 42 4c 45 20 45 56 41 4c 55 41 54 49 4f 4e 20 |IBLE EVALUATION | 00000610 41 4c 47 4f 52 49 54 48 4d 53 0a 20 20 20 49 4e |ALGORITHMS. IN| 00000620 20 43 45 4c 4c 55 4c 41 52 20 41 55 54 4f 4d 41 | CELLULAR AUTOMA| 00000630 54 41 2e 20 20 54 48 45 20 53 45 43 52 45 54 20 |TA. THE SECRET | 00000640 49 53 20 54 4f 20 45 58 50 45 52 49 4d 45 4e 54 |IS TO EXPERIMENT| 00000650 2e 20 20 53 4f 4d 45 54 49 4d 45 53 20 0a 20 20 |. SOMETIMES . | 00000660 20 42 45 41 55 54 49 46 55 4c 20 50 41 54 54 45 | BEAUTIFUL PATTE| 00000670 52 4e 53 20 45 4d 45 52 47 45 20 41 4e 44 20 55 |RNS EMERGE AND U| 00000680 4e 45 58 50 45 43 54 45 44 2f 49 4e 54 45 52 45 |NEXPECTED/INTERE| 00000690 53 54 49 4e 47 20 50 52 4f 43 45 53 53 45 53 20 |STING PROCESSES | 000006a0 45 56 4f 4c 56 45 2e 0a 0a 20 20 20 4a 45 41 4e |EVOLVE... JEAN| 000006b0 20 56 41 4e 20 4d 4f 55 52 49 4b 0a 20 20 20 54 | VAN MOURIK. T| 000006c0 48 49 52 44 20 4d 49 4c 4c 45 4e 4e 49 55 4d 0a |HIRD MILLENNIUM.| 000006d0 20 20 20 4d 49 4c 4c 20 43 4f 54 54 41 47 45 0a | MILL COTTAGE.| 000006e0 20 20 20 44 45 52 57 59 44 44 0a 20 20 20 41 4d | DERWYDD. AM| 000006f0 4d 41 4e 46 4f 52 44 0a 20 20 20 44 59 46 45 44 |MANFORD. DYFED| 00000700 20 20 20 53 41 31 38 20 33 4c 51 0a 20 20 20 55 | SA18 3LQ. U| 00000710 4e 49 54 45 44 20 4b 49 4e 47 44 4f 4d 0a 20 20 |NITED KINGDOM. | 00000720 20 | | 00000721
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