Home » Archimedes archive » Acorn User » AU 1998-09.adf » Regulars » StarInfo/Wareham/!Julia/!Help
StarInfo/Wareham/!Julia/!Help
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 1998-09.adf » Regulars |
| Filename: | StarInfo/Wareham/!Julia/!Help |
| Read OK: | ✔ |
| File size: | 03BD bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Julia Trails - By RJW ~~~~~~~~~~~~~~~~~~~~~ Julia Trails was based on a Unix screen-saver that I have on my Linux machine. It was most impressive but it had one major drawback, it didn't run under RISC OS. I therefore decided to port it to my trusty A5000. The result is not a direct port, rather my interpretation of it. The program is best viewed than described but briefly it displays a morph between different julia sets along with a fade-trail. When you run the program it will ask you if you wish to display the position on the screen corresponding to the julia set on the screen. Press 'Y' if you wish to see it. The program can work in both high (MODE 27) and low (MODE 9) screen modes. It automatically detects which is available to you and asks if this option is OK. Note, the high resolution mode is fairly slow on my machine and so is probably only suitable for use on A7000s & RISC PCs. About Me ~~~~~~~~ E-Mail : rjwareham@hotmail.com
00000000 4a 75 6c 69 61 20 54 72 61 69 6c 73 20 2d 20 42 |Julia Trails - B| 00000010 79 20 52 4a 57 0a 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e |y RJW.~~~~~~~~~~| 00000020 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 0a 20 4a 75 6c |~~~~~~~~~~~. Jul| 00000030 69 61 20 54 72 61 69 6c 73 20 77 61 73 20 62 61 |ia Trails was ba| 00000040 73 65 64 20 6f 6e 20 61 20 55 6e 69 78 20 73 63 |sed on a Unix sc| 00000050 72 65 65 6e 2d 73 61 76 65 72 20 74 68 61 74 0a |reen-saver that.| 00000060 49 20 68 61 76 65 20 6f 6e 20 6d 79 20 4c 69 6e |I have on my Lin| 00000070 75 78 20 6d 61 63 68 69 6e 65 2e 20 49 74 20 77 |ux machine. It w| 00000080 61 73 20 6d 6f 73 74 20 69 6d 70 72 65 73 73 69 |as most impressi| 00000090 76 65 0a 62 75 74 20 69 74 20 68 61 64 20 6f 6e |ve.but it had on| 000000a0 65 20 6d 61 6a 6f 72 20 64 72 61 77 62 61 63 6b |e major drawback| 000000b0 2c 20 69 74 20 64 69 64 6e 27 74 20 72 75 6e 20 |, it didn't run | 000000c0 75 6e 64 65 72 0a 52 49 53 43 20 4f 53 2e 20 49 |under.RISC OS. I| 000000d0 20 74 68 65 72 65 66 6f 72 65 20 64 65 63 69 64 | therefore decid| 000000e0 65 64 20 74 6f 20 70 6f 72 74 20 69 74 20 74 6f |ed to port it to| 000000f0 20 6d 79 20 74 72 75 73 74 79 0a 41 35 30 30 30 | my trusty.A5000| 00000100 2e 20 54 68 65 20 72 65 73 75 6c 74 20 69 73 20 |. The result is | 00000110 6e 6f 74 20 61 20 64 69 72 65 63 74 20 70 6f 72 |not a direct por| 00000120 74 2c 20 72 61 74 68 65 72 20 6d 79 0a 69 6e 74 |t, rather my.int| 00000130 65 72 70 72 65 74 61 74 69 6f 6e 20 6f 66 20 69 |erpretation of i| 00000140 74 2e 0a 20 54 68 65 20 70 72 6f 67 72 61 6d 20 |t.. The program | 00000150 69 73 20 62 65 73 74 20 76 69 65 77 65 64 20 74 |is best viewed t| 00000160 68 61 6e 20 64 65 73 63 72 69 62 65 64 20 62 75 |han described bu| 00000170 74 0a 62 72 69 65 66 6c 79 20 69 74 20 64 69 73 |t.briefly it dis| 00000180 70 6c 61 79 73 20 61 20 6d 6f 72 70 68 20 62 65 |plays a morph be| 00000190 74 77 65 65 6e 20 64 69 66 66 65 72 65 6e 74 20 |tween different | 000001a0 6a 75 6c 69 61 0a 73 65 74 73 20 61 6c 6f 6e 67 |julia.sets along| 000001b0 20 77 69 74 68 20 61 20 66 61 64 65 2d 74 72 61 | with a fade-tra| 000001c0 69 6c 2e 0a 20 57 68 65 6e 20 79 6f 75 20 72 75 |il.. When you ru| 000001d0 6e 20 74 68 65 20 70 72 6f 67 72 61 6d 20 69 74 |n the program it| 000001e0 20 77 69 6c 6c 20 61 73 6b 20 79 6f 75 20 69 66 | will ask you if| 000001f0 20 79 6f 75 0a 77 69 73 68 20 74 6f 20 64 69 73 | you.wish to dis| 00000200 70 6c 61 79 20 74 68 65 20 70 6f 73 69 74 69 6f |play the positio| 00000210 6e 20 6f 6e 20 74 68 65 20 73 63 72 65 65 6e 20 |n on the screen | 00000220 0a 63 6f 72 72 65 73 70 6f 6e 64 69 6e 67 20 74 |.corresponding t| 00000230 6f 20 74 68 65 20 6a 75 6c 69 61 20 73 65 74 20 |o the julia set | 00000240 6f 6e 20 74 68 65 20 73 63 72 65 65 6e 2e 20 50 |on the screen. P| 00000250 72 65 73 73 0a 27 59 27 20 69 66 20 79 6f 75 20 |ress.'Y' if you | 00000260 77 69 73 68 20 74 6f 20 73 65 65 20 69 74 2e 0a |wish to see it..| 00000270 20 54 68 65 20 70 72 6f 67 72 61 6d 20 63 61 6e | The program can| 00000280 20 77 6f 72 6b 20 69 6e 20 62 6f 74 68 20 68 69 | work in both hi| 00000290 67 68 20 28 4d 4f 44 45 20 32 37 29 20 61 6e 64 |gh (MODE 27) and| 000002a0 0a 6c 6f 77 20 28 4d 4f 44 45 20 39 29 20 73 63 |.low (MODE 9) sc| 000002b0 72 65 65 6e 20 6d 6f 64 65 73 2e 20 49 74 20 61 |reen modes. It a| 000002c0 75 74 6f 6d 61 74 69 63 61 6c 6c 79 20 64 65 74 |utomatically det| 000002d0 65 63 74 73 0a 77 68 69 63 68 20 69 73 20 61 76 |ects.which is av| 000002e0 61 69 6c 61 62 6c 65 20 74 6f 20 79 6f 75 20 61 |ailable to you a| 000002f0 6e 64 20 61 73 6b 73 20 69 66 20 74 68 69 73 20 |nd asks if this | 00000300 6f 70 74 69 6f 6e 0a 69 73 20 4f 4b 2e 20 4e 6f |option.is OK. No| 00000310 74 65 2c 20 74 68 65 20 68 69 67 68 20 72 65 73 |te, the high res| 00000320 6f 6c 75 74 69 6f 6e 20 6d 6f 64 65 20 69 73 20 |olution mode is | 00000330 66 61 69 72 6c 79 0a 73 6c 6f 77 20 6f 6e 20 6d |fairly.slow on m| 00000340 79 20 6d 61 63 68 69 6e 65 20 61 6e 64 20 73 6f |y machine and so| 00000350 20 69 73 20 70 72 6f 62 61 62 6c 79 20 6f 6e 6c | is probably onl| 00000360 79 20 73 75 69 74 61 62 6c 65 0a 66 6f 72 20 75 |y suitable.for u| 00000370 73 65 20 6f 6e 20 41 37 30 30 30 73 20 26 20 52 |se on A7000s & R| 00000380 49 53 43 20 50 43 73 2e 0a 0a 41 62 6f 75 74 20 |ISC PCs...About | 00000390 4d 65 0a 7e 7e 7e 7e 7e 7e 7e 7e 0a 0a 45 2d 4d |Me.~~~~~~~~..E-M| 000003a0 61 69 6c 20 3a 20 72 6a 77 61 72 65 68 61 6d 40 |ail : rjwareham@| 000003b0 68 6f 74 6d 61 69 6c 2e 63 6f 6d 0a 0a |hotmail.com..| 000003bd
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