Home » Archimedes archive » Acorn Computing » 1993 05 Mega Disk.adf » 93_05 » Miscellany/TreeForm

Miscellany/TreeForm

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 Computing » 1993 05 Mega Disk.adf » 93_05
Filename: Miscellany/TreeForm
Read OK:
File size: 0EA1 bytes
Load address: 0000
Exec address: 0000
File contents
   10REM > TreeForm
   20
   30ON ERROR PRINT'REPORT$;" at line ";STR$ERL:END
   40PROCinit
   50REPEAT
   60PROCquest
   70REPEAT:end%=0
   80PROCplot
   90REPEAT:send%=0
  100SYS6,15,0:SYS6,120
  110OFF
  120CASE CHR$(GET) OF
  130WHEN "A","a" : PROCanim
  140WHEN "R" : r%+=1:IF r%>16 r%=16
  150WHEN "r" : r%-=1:IF r%<0 r%=0
  160WHEN "G" : g%+=1:IF g%>16 g%=16
  170WHEN "g" : g%-=1:IF g%<0 g%=0
  180WHEN "B" : b%+=1:IF b%>16 b%=16
  190WHEN "b" : b%-=1:IF b%<0 b%=0
  200WHEN "+","=" : brt%+=8:IF brt%>256-8 brt%=256-8
  210WHEN "-","_" : brt%-=8:IF brt%<0 brt%=0
  220WHEN "T","t" : tog%=tog%EOR255
  230WHEN " " : send%=1
  240WHEN "Q","q" : send%=2
  250WHEN "S","s" : OSCLI"ScreenSave Tree"+STR$~num%
  260WHEN "L","l" : PROCload
  270ENDCASE
  280PROCud_pal
  290UNTIL send%>0
  300UNTIL send%>1
  310UNTIL 0
  320END
  330
  340DEFPROCload
  350LOCAL ERROR
  360ON ERROR LOCAL MODE12:ENDPROC
  370MODE 12
  380INPUT'"Enter directory to load from (RETURN = @) : "dir$
  390IF dir$="" dir$="@"
  400OSCLI"Cat "+dir$
  410INPUT'"Enter filename to load : "f$
  420OSCLI"ScreenLoad "+dir$+"."+f$
  430ENDPROC
  440
  450DEFPROCanim
  460LOCAL nummm%,or%,og%,ob%,cr%,cg%,cb%,lr%,lg%,lb%,b%,a%
  470LOCAL ERROR
  480ON ERROR LOCAL ENDPROC
  490nummm%=15
  500or%=RND(255):og%=RND(255):ob%=RND(255)
  510REPEAT
  520cr%=RND(255):cg%=RND(255):cb%=RND(255)
  530FOR a%=0 TO nummm%
  540WAIT
  550FOR b%=1 TO 14
  560?pal%=b%+1:SYS7,11,pal%
  570?pal%=b%:SYS7,12,pal%
  580NEXT
  590lr%=cr%*a%/nummm%+or%*(nummm%-a%)/nummm%
  600lg%=cg%*a%/nummm%+og%*(nummm%-a%)/nummm%
  610lb%=cb%*a%/nummm%+ob%*(nummm%-a%)/nummm%
  620COLOUR 15,lr%,lg%,lb%
  630NEXT
  640or%=cr%:og%=cg%:ob%=cb%
  650UNTIL 0
  660ENDPROC
  670
  680DEFPROCquest
  690MODE 12
  700PRINT'"Enter mutation factor (0-100) : ";
  710PROCask(mut%,0,100)
  720PRINT"Enter angle of mutation (0-360) : ";
  730PROCask(amut%,0,360)
  740PRINT'"Enter angle (-360 - 360): ";
  750PROCask(sang%,-360,360)
  760PRINT'"Enter start length (0-8192): ";
  770PROCask(len%,0,8192)
  780PRINT"Enter length mutation (0-100): ";
  790PROCask(lmut%,0,100)
  800PRINT"Enter length change (0-100) : ";
  810PROCask(lch%,0,100)
  820PRINT'"Enter start thickness (0-256) : ";
  830PROCask(thick%,0,256)
  840PRINT'"Enter tree depth (1-15): ";
  850PROCask(depth%,1,15)
  860ENDPROC
  870
  880DEFPROCask(RETURN a,min,max)
  890LOCAL a$,b%,oa,x%,y%:oa=a
  900x%=POS:y%=VPOS
  910a$=STR$a
  920FOR b%=1 TO LENa$
  930SYS6,138,0,ASCMID$(a$,b%,1)
  940NEXT
  950INPUT""a
  960IF a<min OR a>max a=oa:PRINTTAB(x%,y%)STR$a;"     "
  970ENDPROC
  980
  990DEFPROCdraw(sx,sy,ang,dep%,length)
 1000LOCAL vx,vy,pos
 1010IF INKEY(-66) end%=-1
 1020IF dep%>depth% OR end% ENDPROC
 1030GCOL16-dep%
 1040vx=SINRADang
 1050vy=COSRADang
 1060PROCl(sx,sy,sx+vx*length,sy+vy*length)
 1070IF RND(100)<=mut% THEN
 1080pos=RND(1)
 1090PROCdraw(sx+vx*pos*length,sy+vy*pos*length,ang+(RND(2)*2-3)*RND(amut%),dep%+1,length*(RND(lmut%)+lch%)/100)
 1100ENDIF
 1110IF RND(100)<=mut% THEN
 1120PROCdraw(sx+vx*length,sy+vy*length,ang+((RND(2)*2-3)*RND(amut%)),dep%+1,length*(RND(lmut%)+lch%)/100)
 1130ELSE
 1140PROCdraw(sx+vx*length,sy+vy*length,ang+(sang%+RND(amut%/5)*(RND(2)*2-3)),dep%+1,length*(RND(lmut%)+lch%)/100)
 1150PROCdraw(sx+vx*length,sy+vy*length,ang-(sang%+RND(amut%/5)*(RND(2)*2-3)),dep%+1,length*(RND(lmut%)+lch%)/100)
 1160ENDIF
 1170ENDPROC
 1180
 1190DEFPROCl(x0%,y0%,x1%,y1%)
 1200LOCAL dx%,dy%,a%
 1210IF dep%>=2 PROCl2(x0%,y0%,x1%,y1%,dep%):ENDPROC
 1220dx%=x1%-x0%:dy%=y1%-y0%
 1230FOR a%=0 TO 3
 1240PROCl2(x0%+a%*dx%/4,y0%+a%*dy%/4,x0%+(a%+1)*dx%/4,y0%+(a%+1)*dy%/4,dep%+a%/4)
 1250NEXT
 1260ENDPROC
 1270
 1280DEFPROCl2(x0%,y0%,x1%,y1%,dep)
 1290!path%=2:path%!4=x0%:path%!8=y0%
 1300path%!12=8:path%!16=x1%:path%!20=y1%
 1310path%!24=4:path%!28=0
 1320SYS&40704,path%,0,trans%,0,thick%/dep,cap%,0
 1330ENDPROC
 1340LINE x0%,y0%,x1%,y1%
 1350ENDPROC
 1360
 1370DEFPROCplot
 1380MODE 20
 1390PROCud_pal
 1400PROCdraw(640*4,0,0,1,len%)
 1410ENDPROC
 1420
 1430DEFPROCud_pal
 1440LOCAL red%,grn%,blu%,col%
 1450FOR c%=1 TO 15
 1460red%=c%*r%+c%*r%/16
 1470grn%=c%*g%+c%*g%/16
 1480blu%=c%*b%+c%*b%/16
 1490red%+=brt%:IF red%>255 red%=255
 1500grn%+=brt%:IF grn%>255 grn%=255
 1510blu%+=brt%:IF blu%>255 blu%=255
 1520IF tog% col%=(16-c%) ELSE col%=c%
 1530COLOUR col%,red%,grn%,blu%
 1540NEXT
 1550COLOUR 0,0,64,128
 1560ENDPROC
 1570
 1580DEFPROCinit
 1590DIM pal% 5,trans% 24,cap% 4,path% 1024:num%=1:!cap%=0
 1600mut%=30:amut%=30:sang%=12:len%=512:lmut%=40:lch%=60:depth%=12
 1610r%=8:g%=16:b%=2:tog%=0:brt%=0
 1620trans%!0=1280*256/(1280*4) * &10000
 1630trans%!4=0:trans%!8=0
 1640trans%!12=1024*256/(1280*4) * &10000
 1650trans%!16=0:trans%!20=0
 1660thick%=64
 1670ENDPROC

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67� pal% 5,trans% 24,cap% 4,path% 1024:num%=1:!cap%=0
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T'trans%!0=1280*256/(1280*4) * &10000
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00000000  0d 00 0a 10 f4 20 3e 20  54 72 65 65 46 6f 72 6d  |..... > TreeForm|
00000010  0d 00 14 04 0d 00 1e 1d  ee 20 85 20 f1 27 f6 24  |......... . .'.$|
00000020  3b 22 20 61 74 20 6c 69  6e 65 20 22 3b c3 9e 3a  |;" at line ";..:|
00000030  e0 0d 00 28 09 f2 69 6e  69 74 0d 00 32 05 f5 0d  |...(..init..2...|
00000040  00 3c 0a f2 71 75 65 73  74 0d 00 46 0c f5 3a 65  |.<..quest..F..:e|
00000050  6e 64 25 3d 30 0d 00 50  09 f2 70 6c 6f 74 0d 00  |nd%=0..P..plot..|
00000060  5a 0d f5 3a 73 65 6e 64  25 3d 30 0d 00 64 14 c8  |Z..:send%=0..d..|
00000070  99 36 2c 31 35 2c 30 3a  c8 99 36 2c 31 32 30 0d  |.6,15,0:..6,120.|
00000080  00 6e 05 87 0d 00 78 0d  c8 8e 20 bd 28 a5 29 20  |.n....x... .(.) |
00000090  ca 0d 00 82 15 c9 20 22  41 22 2c 22 61 22 20 3a  |...... "A","a" :|
000000a0  20 f2 61 6e 69 6d 0d 00  8c 1f c9 20 22 52 22 20  | .anim..... "R" |
000000b0  3a 20 72 25 2b 3d 31 3a  e7 20 72 25 3e 31 36 20  |: r%+=1:. r%>16 |
000000c0  72 25 3d 31 36 0d 00 96  1d c9 20 22 72 22 20 3a  |r%=16..... "r" :|
000000d0  20 72 25 2d 3d 31 3a e7  20 72 25 3c 30 20 72 25  | r%-=1:. r%<0 r%|
000000e0  3d 30 0d 00 a0 1f c9 20  22 47 22 20 3a 20 67 25  |=0..... "G" : g%|
000000f0  2b 3d 31 3a e7 20 67 25  3e 31 36 20 67 25 3d 31  |+=1:. g%>16 g%=1|
00000100  36 0d 00 aa 1d c9 20 22  67 22 20 3a 20 67 25 2d  |6..... "g" : g%-|
00000110  3d 31 3a e7 20 67 25 3c  30 20 67 25 3d 30 0d 00  |=1:. g%<0 g%=0..|
00000120  b4 1f c9 20 22 42 22 20  3a 20 62 25 2b 3d 31 3a  |... "B" : b%+=1:|
00000130  e7 20 62 25 3e 31 36 20  62 25 3d 31 36 0d 00 be  |. b%>16 b%=16...|
00000140  1d c9 20 22 62 22 20 3a  20 62 25 2d 3d 31 3a e7  |.. "b" : b%-=1:.|
00000150  20 62 25 3c 30 20 62 25  3d 30 0d 00 c8 2f c9 20  | b%<0 b%=0.../. |
00000160  22 2b 22 2c 22 3d 22 20  3a 20 62 72 74 25 2b 3d  |"+","=" : brt%+=|
00000170  38 3a e7 20 62 72 74 25  3e 32 35 36 2d 38 20 62  |8:. brt%>256-8 b|
00000180  72 74 25 3d 32 35 36 2d  38 0d 00 d2 27 c9 20 22  |rt%=256-8...'. "|
00000190  2d 22 2c 22 5f 22 20 3a  20 62 72 74 25 2d 3d 38  |-","_" : brt%-=8|
000001a0  3a e7 20 62 72 74 25 3c  30 20 62 72 74 25 3d 30  |:. brt%<0 brt%=0|
000001b0  0d 00 dc 1d c9 20 22 54  22 2c 22 74 22 20 3a 20  |..... "T","t" : |
000001c0  74 6f 67 25 3d 74 6f 67  25 82 32 35 35 0d 00 e6  |tog%=tog%.255...|
000001d0  13 c9 20 22 20 22 20 3a  20 73 65 6e 64 25 3d 31  |.. " " : send%=1|
000001e0  0d 00 f0 17 c9 20 22 51  22 2c 22 71 22 20 3a 20  |..... "Q","q" : |
000001f0  73 65 6e 64 25 3d 32 0d  00 fa 29 c9 20 22 53 22  |send%=2...). "S"|
00000200  2c 22 73 22 20 3a 20 ff  22 53 63 72 65 65 6e 53  |,"s" : ."ScreenS|
00000210  61 76 65 20 54 72 65 65  22 2b c3 7e 6e 75 6d 25  |ave Tree"+.~num%|
00000220  0d 01 04 15 c9 20 22 4c  22 2c 22 6c 22 20 3a 20  |..... "L","l" : |
00000230  f2 6c 6f 61 64 0d 01 0e  05 cb 0d 01 18 0b f2 75  |.load..........u|
00000240  64 5f 70 61 6c 0d 01 22  0d fd 20 73 65 6e 64 25  |d_pal..".. send%|
00000250  3e 30 0d 01 2c 0d fd 20  73 65 6e 64 25 3e 31 0d  |>0..,.. send%>1.|
00000260  01 36 07 fd 20 30 0d 01  40 05 e0 0d 01 4a 04 0d  |.6.. 0..@....J..|
00000270  01 54 0a dd f2 6c 6f 61  64 0d 01 5e 07 ea 20 85  |.T...load..^.. .|
00000280  0d 01 68 0f ee 20 85 20  ea 20 eb 31 32 3a e1 0d  |..h.. . . .12:..|
00000290  01 72 08 eb 20 31 32 0d  01 7c 38 e8 27 22 45 6e  |.r.. 12..|8.'"En|
000002a0  74 65 72 20 64 69 72 65  63 74 6f 72 79 20 74 6f  |ter directory to|
000002b0  20 6c 6f 61 64 20 66 72  6f 6d 20 28 52 45 54 55  | load from (RETU|
000002c0  52 4e 20 3d 20 40 29 20  3a 20 22 64 69 72 24 0d  |RN = @) : "dir$.|
000002d0  01 86 16 e7 20 64 69 72  24 3d 22 22 20 64 69 72  |.... dir$="" dir|
000002e0  24 3d 22 40 22 0d 01 90  10 ff 22 43 61 74 20 22  |$="@"....."Cat "|
000002f0  2b 64 69 72 24 0d 01 9a  23 e8 27 22 45 6e 74 65  |+dir$...#.'"Ente|
00000300  72 20 66 69 6c 65 6e 61  6d 65 20 74 6f 20 6c 6f  |r filename to lo|
00000310  61 64 20 3a 20 22 66 24  0d 01 a4 1e ff 22 53 63  |ad : "f$....."Sc|
00000320  72 65 65 6e 4c 6f 61 64  20 22 2b 64 69 72 24 2b  |reenLoad "+dir$+|
00000330  22 2e 22 2b 66 24 0d 01  ae 05 e1 0d 01 b8 04 0d  |"."+f$..........|
00000340  01 c2 0a dd f2 61 6e 69  6d 0d 01 cc 36 ea 20 6e  |.....anim...6. n|
00000350  75 6d 6d 6d 25 2c 6f 72  25 2c 6f 67 25 2c 6f 62  |ummm%,or%,og%,ob|
00000360  25 2c 63 72 25 2c 63 67  25 2c 63 62 25 2c 6c 72  |%,cr%,cg%,cb%,lr|
00000370  25 2c 6c 67 25 2c 6c 62  25 2c 62 25 2c 61 25 0d  |%,lg%,lb%,b%,a%.|
00000380  01 d6 07 ea 20 85 0d 01  e0 0b ee 20 85 20 ea 20  |.... ...... . . |
00000390  e1 0d 01 ea 0d 6e 75 6d  6d 6d 25 3d 31 35 0d 01  |.....nummm%=15..|
000003a0  f4 24 6f 72 25 3d b3 28  32 35 35 29 3a 6f 67 25  |.$or%=.(255):og%|
000003b0  3d b3 28 32 35 35 29 3a  6f 62 25 3d b3 28 32 35  |=.(255):ob%=.(25|
000003c0  35 29 0d 01 fe 05 f5 0d  02 08 24 63 72 25 3d b3  |5)........$cr%=.|
000003d0  28 32 35 35 29 3a 63 67  25 3d b3 28 32 35 35 29  |(255):cg%=.(255)|
000003e0  3a 63 62 25 3d b3 28 32  35 35 29 0d 02 12 13 e3  |:cb%=.(255).....|
000003f0  20 61 25 3d 30 20 b8 20  6e 75 6d 6d 6d 25 0d 02  | a%=0 . nummm%..|
00000400  1c 06 c8 96 0d 02 26 0f  e3 20 62 25 3d 31 20 b8  |......&.. b%=1 .|
00000410  20 31 34 0d 02 30 1a 3f  70 61 6c 25 3d 62 25 2b  | 14..0.?pal%=b%+|
00000420  31 3a c8 99 37 2c 31 31  2c 70 61 6c 25 0d 02 3a  |1:..7,11,pal%..:|
00000430  18 3f 70 61 6c 25 3d 62  25 3a c8 99 37 2c 31 32  |.?pal%=b%:..7,12|
00000440  2c 70 61 6c 25 0d 02 44  05 ed 0d 02 4e 2c 6c 72  |,pal%..D....N,lr|
00000450  25 3d 63 72 25 2a 61 25  2f 6e 75 6d 6d 6d 25 2b  |%=cr%*a%/nummm%+|
00000460  6f 72 25 2a 28 6e 75 6d  6d 6d 25 2d 61 25 29 2f  |or%*(nummm%-a%)/|
00000470  6e 75 6d 6d 6d 25 0d 02  58 2c 6c 67 25 3d 63 67  |nummm%..X,lg%=cg|
00000480  25 2a 61 25 2f 6e 75 6d  6d 6d 25 2b 6f 67 25 2a  |%*a%/nummm%+og%*|
00000490  28 6e 75 6d 6d 6d 25 2d  61 25 29 2f 6e 75 6d 6d  |(nummm%-a%)/numm|
000004a0  6d 25 0d 02 62 2c 6c 62  25 3d 63 62 25 2a 61 25  |m%..b,lb%=cb%*a%|
000004b0  2f 6e 75 6d 6d 6d 25 2b  6f 62 25 2a 28 6e 75 6d  |/nummm%+ob%*(num|
000004c0  6d 6d 25 2d 61 25 29 2f  6e 75 6d 6d 6d 25 0d 02  |mm%-a%)/nummm%..|
000004d0  6c 14 fb 20 31 35 2c 6c  72 25 2c 6c 67 25 2c 6c  |l.. 15,lr%,lg%,l|
000004e0  62 25 0d 02 76 05 ed 0d  02 80 1b 6f 72 25 3d 63  |b%..v......or%=c|
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00000ea0  ff                                                |.|
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