Home » Archimedes archive » Acorn User » AU 1998-12.adf » Regulars » StarInfo/Vibe/MANDALA

StarInfo/Vibe/MANDALA

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 1998-12.adf » Regulars
Filename: StarInfo/Vibe/MANDALA
Read OK: ✔
File size: 05EA bytes
Load address: 0000
Exec address: 0000
File contents
   10REM > MANDALA
   20
   30MODE21:OFF
   40V%=10
   50FORI%=660TO60STEP-60:V%=10-V%
   60REPEAT:R1%=RND(255):G1%=RND(255):B1%=RND(255):UNTILR1%+G1%+B1%<=63
   70REPEAT:R2%=RND(255):G2%=RND(255):B2%=RND(255):UNTILR2%+G2%+B2%>=256
   80REPEAT:R3%=RND(255):G3%=RND(255):B3%=RND(255):UNTILR3%+G3%+B3%<=63
   90REPEAT:R4%=RND(255):G4%=RND(255):B4%=RND(255):UNTILR4%+G4%+B4%>=256
  100FORN%=0TO359STEP20:T1=RAD(N%+V%):T2=RAD(N%+20+V%)
  110X1%=I%*SINT1+640:Y1%=I%*COST1+512
  120X2%=I%*SINT2+640:Y2%=I%*COST2+512
  130PROCFLARE(X1%,Y1%,X2%,Y2%,2.8,R1%,G1%,B1%,R2%,G2%,B2%)
  140PROCFLARE(X2%,Y2%,X1%,Y1%,2.8,R3%,G3%,B3%,R4%,G4%,B4%)
  150SWAP R1%,R3%:SWAP G1%,G3%:SWAP B1%,B3%
  160SWAP R2%,R4%:SWAP G2%,G4%:SWAP B2%,B4%
  170NEXT,
  180END
  190
  200DEFPROCFLARE(X1%,Y1%,X2%,Y2%,Z,R1%,G1%,B1%,R2%,B2%,G2%)
  210LOCAL XE,YE,D,SI,XC%,YC%,XA%,YA%,N%,TX1,TX2,TY1,TY2,R,G,B
  220XC%=(X1%+X2%)/2:YC%=(Y1%+Y2%)/2
  230XE=X2%-X1%:YE=Y2%-Y1%:D=SQR(XE^2+YE^2):XE=XE/D:YE=YE/D:SI=DEGASN(XE)
  240IF YE<=0 SI=180-SI ELSE SI=360+SI
  250IF SI>360 SI=SI-360
  260D=D*Z:XA%=XC%+D*SINRAD(SI+270):YA%=YC%+D*COSRAD(SI+270)
  270TX1=X1%:TY1=Y1%
  280FORN%=1TO32
  290R=((32-N%)*R1%+N%*R2%)/32:G=((32-N%)*G1%+N%*G2%)/32
  300B=((32-N%)*B1%+N%*B2%)/32:PROCRGB(R,G,B)
  310TX2=TX1:TY2=TY1
  320TX1=((32-N%)*X1%+N%*XA%)/32
  330TY1=((32-N%)*Y1%+N%*YA%)/32
  340MOVETX1,TY1:MOVETX2,TY2:PLOT85,XC%,YC%
  350NEXT
  360TX1=X2%:TY1=Y2%
  370FORN%=1TO32
  380R=((32-N%)*R1%+N%*R2%)/32:G=((32-N%)*G1%+N%*G2%)/32
  390B=((32-N%)*B1%+N%*B2%)/32:PROCRGB(R,G,B)
  400TX2=TX1:TY2=TY1
  410TX1=((32-N%)*X2%+N%*XA%)/32
  420TY1=((32-N%)*Y2%+N%*YA%)/32
  430MOVETX1,TY1:MOVETX2,TY2:PLOT85,XC%,YC%
  440NEXT
  450ENDPROC
  460
  470DEFPROCRGB(R%,G%,B%)
  480LOCAL C%:C%=(R%<<8)+(G%<<16)+(B%<<24)
  490SYS "ColourTrans_SetGCOL",C%,,,&100,0
  500ENDPROC


� > MANDALA

	�21:�
(	V%=10
2�I%=660�60�-60:V%=10-V%
<7�:R1%=�(255):G1%=�(255):B1%=�(255):�R1%+G1%+B1%<=63
F8�:R2%=�(255):G2%=�(255):B2%=�(255):�R2%+G2%+B2%>=256
P7�:R3%=�(255):G3%=�(255):B3%=�(255):�R3%+G3%+B3%<=63
Z8�:R4%=�(255):G4%=�(255):B4%=�(255):�R4%+G4%+B4%>=256
d+�N%=0�359�20:T1=�(N%+V%):T2=�(N%+20+V%)
n!X1%=I%*�T1+640:Y1%=I%*�T1+512
x!X2%=I%*�T2+640:Y2%=I%*�T2+512
�7�FLARE(X1%,Y1%,X2%,Y2%,2.8,R1%,G1%,B1%,R2%,G2%,B2%)
�7�FLARE(X2%,Y2%,X1%,Y1%,2.8,R3%,G3%,B3%,R4%,G4%,B4%)
�$Ȕ R1%,R3%:Ȕ G1%,G3%:Ȕ B1%,B3%
�$Ȕ R2%,R4%:Ȕ G2%,G4%:Ȕ B2%,B4%
��,
��
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�6��FLARE(X1%,Y1%,X2%,Y2%,Z,R1%,G1%,B1%,R2%,B2%,G2%)
�9� XE,YE,D,SI,XC%,YC%,XA%,YA%,N%,TX1,TX2,TY1,TY2,R,G,B
�#XC%=(X1%+X2%)/2:YC%=(Y1%+Y2%)/2
�BXE=X2%-X1%:YE=Y2%-Y1%:D=�(XE^2+YE^2):XE=XE/D:YE=YE/D:SI=��(XE)
�!� YE<=0 SI=180-SI � SI=360+SI
�� SI>360 SI=SI-360
3D=D*Z:XA%=XC%+D*��(SI+270):YA%=YC%+D*��(SI+270)
TX1=X1%:TY1=Y1%
�N%=1�32
"7R=((32-N%)*R1%+N%*R2%)/32:G=((32-N%)*G1%+N%*G2%)/32
,)B=((32-N%)*B1%+N%*B2%)/32:�RGB(R,G,B)
6TX2=TX1:TY2=TY1
@TX1=((32-N%)*X1%+N%*XA%)/32
JTY1=((32-N%)*Y1%+N%*YA%)/32
T!�TX1,TY1:�TX2,TY2:�85,XC%,YC%
^�
hTX1=X2%:TY1=Y2%
r�N%=1�32
|7R=((32-N%)*R1%+N%*R2%)/32:G=((32-N%)*G1%+N%*G2%)/32
�)B=((32-N%)*B1%+N%*B2%)/32:�RGB(R,G,B)
�TX2=TX1:TY2=TY1
�TX1=((32-N%)*X2%+N%*XA%)/32
�TY1=((32-N%)*Y2%+N%*YA%)/32
�!�TX1,TY1:�TX2,TY2:�85,XC%,YC%
��
��
�
���RGB(R%,G%,B%)
�%� C%:C%=(R%<<8)+(G%<<16)+(B%<<24)
�(ș "ColourTrans_SetGCOL",C%,,,&100,0
��
�
00000000  0d 00 0a 0f f4 20 3e 20  4d 41 4e 44 41 4c 41 0d  |..... > MANDALA.|
00000010  00 14 04 0d 00 1e 09 eb  32 31 3a 87 0d 00 28 09  |........21:...(.|
00000020  56 25 3d 31 30 0d 00 32  1b e3 49 25 3d 36 36 30  |V%=10..2..I%=660|
00000030  b8 36 30 88 2d 36 30 3a  56 25 3d 31 30 2d 56 25  |.60.-60:V%=10-V%|
00000040  0d 00 3c 37 f5 3a 52 31  25 3d b3 28 32 35 35 29  |..<7.:R1%=.(255)|
00000050  3a 47 31 25 3d b3 28 32  35 35 29 3a 42 31 25 3d  |:G1%=.(255):B1%=|
00000060  b3 28 32 35 35 29 3a fd  52 31 25 2b 47 31 25 2b  |.(255):.R1%+G1%+|
00000070  42 31 25 3c 3d 36 33 0d  00 46 38 f5 3a 52 32 25  |B1%<=63..F8.:R2%|
00000080  3d b3 28 32 35 35 29 3a  47 32 25 3d b3 28 32 35  |=.(255):G2%=.(25|
00000090  35 29 3a 42 32 25 3d b3  28 32 35 35 29 3a fd 52  |5):B2%=.(255):.R|
000000a0  32 25 2b 47 32 25 2b 42  32 25 3e 3d 32 35 36 0d  |2%+G2%+B2%>=256.|
000000b0  00 50 37 f5 3a 52 33 25  3d b3 28 32 35 35 29 3a  |.P7.:R3%=.(255):|
000000c0  47 33 25 3d b3 28 32 35  35 29 3a 42 33 25 3d b3  |G3%=.(255):B3%=.|
000000d0  28 32 35 35 29 3a fd 52  33 25 2b 47 33 25 2b 42  |(255):.R3%+G3%+B|
000000e0  33 25 3c 3d 36 33 0d 00  5a 38 f5 3a 52 34 25 3d  |3%<=63..Z8.:R4%=|
000000f0  b3 28 32 35 35 29 3a 47  34 25 3d b3 28 32 35 35  |.(255):G4%=.(255|
00000100  29 3a 42 34 25 3d b3 28  32 35 35 29 3a fd 52 34  |):B4%=.(255):.R4|
00000110  25 2b 47 34 25 2b 42 34  25 3e 3d 32 35 36 0d 00  |%+G4%+B4%>=256..|
00000120  64 2b e3 4e 25 3d 30 b8  33 35 39 88 32 30 3a 54  |d+.N%=0.359.20:T|
00000130  31 3d b2 28 4e 25 2b 56  25 29 3a 54 32 3d b2 28  |1=.(N%+V%):T2=.(|
00000140  4e 25 2b 32 30 2b 56 25  29 0d 00 6e 21 58 31 25  |N%+20+V%)..n!X1%|
00000150  3d 49 25 2a b5 54 31 2b  36 34 30 3a 59 31 25 3d  |=I%*.T1+640:Y1%=|
00000160  49 25 2a 9b 54 31 2b 35  31 32 0d 00 78 21 58 32  |I%*.T1+512..x!X2|
00000170  25 3d 49 25 2a b5 54 32  2b 36 34 30 3a 59 32 25  |%=I%*.T2+640:Y2%|
00000180  3d 49 25 2a 9b 54 32 2b  35 31 32 0d 00 82 37 f2  |=I%*.T2+512...7.|
00000190  46 4c 41 52 45 28 58 31  25 2c 59 31 25 2c 58 32  |FLARE(X1%,Y1%,X2|
000001a0  25 2c 59 32 25 2c 32 2e  38 2c 52 31 25 2c 47 31  |%,Y2%,2.8,R1%,G1|
000001b0  25 2c 42 31 25 2c 52 32  25 2c 47 32 25 2c 42 32  |%,B1%,R2%,G2%,B2|
000001c0  25 29 0d 00 8c 37 f2 46  4c 41 52 45 28 58 32 25  |%)...7.FLARE(X2%|
000001d0  2c 59 32 25 2c 58 31 25  2c 59 31 25 2c 32 2e 38  |,Y2%,X1%,Y1%,2.8|
000001e0  2c 52 33 25 2c 47 33 25  2c 42 33 25 2c 52 34 25  |,R3%,G3%,B3%,R4%|
000001f0  2c 47 34 25 2c 42 34 25  29 0d 00 96 24 c8 94 20  |,G4%,B4%)...$.. |
00000200  52 31 25 2c 52 33 25 3a  c8 94 20 47 31 25 2c 47  |R1%,R3%:.. G1%,G|
00000210  33 25 3a c8 94 20 42 31  25 2c 42 33 25 0d 00 a0  |3%:.. B1%,B3%...|
00000220  24 c8 94 20 52 32 25 2c  52 34 25 3a c8 94 20 47  |$.. R2%,R4%:.. G|
00000230  32 25 2c 47 34 25 3a c8  94 20 42 32 25 2c 42 34  |2%,G4%:.. B2%,B4|
00000240  25 0d 00 aa 06 ed 2c 0d  00 b4 05 e0 0d 00 be 04  |%.....,.........|
00000250  0d 00 c8 36 dd f2 46 4c  41 52 45 28 58 31 25 2c  |...6..FLARE(X1%,|
00000260  59 31 25 2c 58 32 25 2c  59 32 25 2c 5a 2c 52 31  |Y1%,X2%,Y2%,Z,R1|
00000270  25 2c 47 31 25 2c 42 31  25 2c 52 32 25 2c 42 32  |%,G1%,B1%,R2%,B2|
00000280  25 2c 47 32 25 29 0d 00  d2 39 ea 20 58 45 2c 59  |%,G2%)...9. XE,Y|
00000290  45 2c 44 2c 53 49 2c 58  43 25 2c 59 43 25 2c 58  |E,D,SI,XC%,YC%,X|
000002a0  41 25 2c 59 41 25 2c 4e  25 2c 54 58 31 2c 54 58  |A%,YA%,N%,TX1,TX|
000002b0  32 2c 54 59 31 2c 54 59  32 2c 52 2c 47 2c 42 0d  |2,TY1,TY2,R,G,B.|
000002c0  00 dc 23 58 43 25 3d 28  58 31 25 2b 58 32 25 29  |..#XC%=(X1%+X2%)|
000002d0  2f 32 3a 59 43 25 3d 28  59 31 25 2b 59 32 25 29  |/2:YC%=(Y1%+Y2%)|
000002e0  2f 32 0d 00 e6 42 58 45  3d 58 32 25 2d 58 31 25  |/2...BXE=X2%-X1%|
000002f0  3a 59 45 3d 59 32 25 2d  59 31 25 3a 44 3d b6 28  |:YE=Y2%-Y1%:D=.(|
00000300  58 45 5e 32 2b 59 45 5e  32 29 3a 58 45 3d 58 45  |XE^2+YE^2):XE=XE|
00000310  2f 44 3a 59 45 3d 59 45  2f 44 3a 53 49 3d 9d 98  |/D:YE=YE/D:SI=..|
00000320  28 58 45 29 0d 00 f0 21  e7 20 59 45 3c 3d 30 20  |(XE)...!. YE<=0 |
00000330  53 49 3d 31 38 30 2d 53  49 20 8b 20 53 49 3d 33  |SI=180-SI . SI=3|
00000340  36 30 2b 53 49 0d 00 fa  16 e7 20 53 49 3e 33 36  |60+SI..... SI>36|
00000350  30 20 53 49 3d 53 49 2d  33 36 30 0d 01 04 33 44  |0 SI=SI-360...3D|
00000360  3d 44 2a 5a 3a 58 41 25  3d 58 43 25 2b 44 2a b5  |=D*Z:XA%=XC%+D*.|
00000370  b2 28 53 49 2b 32 37 30  29 3a 59 41 25 3d 59 43  |.(SI+270):YA%=YC|
00000380  25 2b 44 2a 9b b2 28 53  49 2b 32 37 30 29 0d 01  |%+D*..(SI+270)..|
00000390  0e 13 54 58 31 3d 58 31  25 3a 54 59 31 3d 59 31  |..TX1=X1%:TY1=Y1|
000003a0  25 0d 01 18 0c e3 4e 25  3d 31 b8 33 32 0d 01 22  |%.....N%=1.32.."|
000003b0  37 52 3d 28 28 33 32 2d  4e 25 29 2a 52 31 25 2b  |7R=((32-N%)*R1%+|
000003c0  4e 25 2a 52 32 25 29 2f  33 32 3a 47 3d 28 28 33  |N%*R2%)/32:G=((3|
000003d0  32 2d 4e 25 29 2a 47 31  25 2b 4e 25 2a 47 32 25  |2-N%)*G1%+N%*G2%|
000003e0  29 2f 33 32 0d 01 2c 29  42 3d 28 28 33 32 2d 4e  |)/32..,)B=((32-N|
000003f0  25 29 2a 42 31 25 2b 4e  25 2a 42 32 25 29 2f 33  |%)*B1%+N%*B2%)/3|
00000400  32 3a f2 52 47 42 28 52  2c 47 2c 42 29 0d 01 36  |2:.RGB(R,G,B)..6|
00000410  13 54 58 32 3d 54 58 31  3a 54 59 32 3d 54 59 31  |.TX2=TX1:TY2=TY1|
00000420  0d 01 40 1f 54 58 31 3d  28 28 33 32 2d 4e 25 29  |..@.TX1=((32-N%)|
00000430  2a 58 31 25 2b 4e 25 2a  58 41 25 29 2f 33 32 0d  |*X1%+N%*XA%)/32.|
00000440  01 4a 1f 54 59 31 3d 28  28 33 32 2d 4e 25 29 2a  |.J.TY1=((32-N%)*|
00000450  59 31 25 2b 4e 25 2a 59  41 25 29 2f 33 32 0d 01  |Y1%+N%*YA%)/32..|
00000460  54 21 ec 54 58 31 2c 54  59 31 3a ec 54 58 32 2c  |T!.TX1,TY1:.TX2,|
00000470  54 59 32 3a f0 38 35 2c  58 43 25 2c 59 43 25 0d  |TY2:.85,XC%,YC%.|
00000480  01 5e 05 ed 0d 01 68 13  54 58 31 3d 58 32 25 3a  |.^....h.TX1=X2%:|
00000490  54 59 31 3d 59 32 25 0d  01 72 0c e3 4e 25 3d 31  |TY1=Y2%..r..N%=1|
000004a0  b8 33 32 0d 01 7c 37 52  3d 28 28 33 32 2d 4e 25  |.32..|7R=((32-N%|
000004b0  29 2a 52 31 25 2b 4e 25  2a 52 32 25 29 2f 33 32  |)*R1%+N%*R2%)/32|
000004c0  3a 47 3d 28 28 33 32 2d  4e 25 29 2a 47 31 25 2b  |:G=((32-N%)*G1%+|
000004d0  4e 25 2a 47 32 25 29 2f  33 32 0d 01 86 29 42 3d  |N%*G2%)/32...)B=|
000004e0  28 28 33 32 2d 4e 25 29  2a 42 31 25 2b 4e 25 2a  |((32-N%)*B1%+N%*|
000004f0  42 32 25 29 2f 33 32 3a  f2 52 47 42 28 52 2c 47  |B2%)/32:.RGB(R,G|
00000500  2c 42 29 0d 01 90 13 54  58 32 3d 54 58 31 3a 54  |,B)....TX2=TX1:T|
00000510  59 32 3d 54 59 31 0d 01  9a 1f 54 58 31 3d 28 28  |Y2=TY1....TX1=((|
00000520  33 32 2d 4e 25 29 2a 58  32 25 2b 4e 25 2a 58 41  |32-N%)*X2%+N%*XA|
00000530  25 29 2f 33 32 0d 01 a4  1f 54 59 31 3d 28 28 33  |%)/32....TY1=((3|
00000540  32 2d 4e 25 29 2a 59 32  25 2b 4e 25 2a 59 41 25  |2-N%)*Y2%+N%*YA%|
00000550  29 2f 33 32 0d 01 ae 21  ec 54 58 31 2c 54 59 31  |)/32...!.TX1,TY1|
00000560  3a ec 54 58 32 2c 54 59  32 3a f0 38 35 2c 58 43  |:.TX2,TY2:.85,XC|
00000570  25 2c 59 43 25 0d 01 b8  05 ed 0d 01 c2 05 e1 0d  |%,YC%...........|
00000580  01 cc 04 0d 01 d6 13 dd  f2 52 47 42 28 52 25 2c  |.........RGB(R%,|
00000590  47 25 2c 42 25 29 0d 01  e0 25 ea 20 43 25 3a 43  |G%,B%)...%. C%:C|
000005a0  25 3d 28 52 25 3c 3c 38  29 2b 28 47 25 3c 3c 31  |%=(R%<<8)+(G%<<1|
000005b0  36 29 2b 28 42 25 3c 3c  32 34 29 0d 01 ea 28 c8  |6)+(B%<<24)...(.|
000005c0  99 20 22 43 6f 6c 6f 75  72 54 72 61 6e 73 5f 53  |. "ColourTrans_S|
000005d0  65 74 47 43 4f 4c 22 2c  43 25 2c 2c 2c 26 31 30  |etGCOL",C%,,,&10|
000005e0  30 2c 30 0d 01 f4 05 e1  0d ff                    |0,0.......|
000005ea

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