Home » Archimedes archive » Acorn User » AU 1994-03.adf » !StarInfo_StarInfo » Turnbull/!Pyramid/Library/Display

Turnbull/!Pyramid/Library/Display

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 1994-03.adf » !StarInfo_StarInfo
Filename: Turnbull/!Pyramid/Library/Display
Read OK:
File size: 0DA7 bytes
Load address: 0000
Exec address: 0000
File contents
   10DEFPROCdisplay
   20LOCALerr$:err$="Display"
   30XR%=0:YR%=0:REPEAT
   40MOUSEX%,Y%,Z%:MOUSETO640,512:YR%=YR%+X%-640ANDM%:XR%=XR%+Y%-512ANDM%
   50type%=INKEY(0)-64:IFtype%>=1ANDtype%<=26THEN
   60*FX21
   70DA%=0:TA%=0:IFXR%>=512THENA%=XR%-1024ELSEA%=XR%
   80REPEAT:PROCidentity:PROCxrot(A%ANDM%):PROCyrot(YR%)
   90J%=matrix%:PROCfill(8):CALLdraw:PROCgoto:UNTILA%=TA%
  100DA%=0:TA%=0:IFYR%>=512THENA%=YR%-1024ELSEA%=YR%
  110REPEAT:PROCidentity:PROCyrot(A%ANDM%)
  120J%=matrix%:PROCfill(8):CALLdraw:PROCgoto:UNTILA%=TA%
  130PROCpreset(type%):XR%=0:YR%=0
  140ELSE
  150PROCidentity:PROCxrot(XR%):PROCyrot(YR%)
  160J%=matrix%:PROCfill(8):CALLdraw
  170ENDIF
  180UNTIL0
  190ENDPROC
  200:
  210DEFPROCpreset(type%)
  220LOCALerr$:err$="Display"
  230CASEtype%OF
  240WHEN1:
  250REM Y-axis spin
  260A%=0:DA%=0:TA%=64:REPEAT
  270PROCidentity:PROCxrot(A%)
  280J%=matrix%:PROCfill(8):CALLdraw
  290PROCgoto:UNTILA%=TA%
  300A%=0:DA%=0:TA%=1<<10:REPEAT
  310PROCidentity:PROCyrot(A%ANDM%):PROCxrot(64)
  320J%=matrix%:PROCfill(8):CALLdraw
  330PROCgoto:UNTILA%=TA%
  340A%=64:DA%=0:TA%=0:REPEAT
  350PROCidentity:PROCxrot(A%)
  360J%=matrix%:PROCfill(8):CALLdraw
  370PROCgoto:UNTILA%=TA%
  380WHEN2:
  390REM X-axis spin, with a wobble
  400A%=0:DA%=0:TA%=1<<10:REPEAT
  410PROCidentity:PROCyrot(DA%<<3):PROCxrot(A%ANDM%)
  420J%=matrix%:PROCfill(8):CALLdraw
  430PROCgoto:UNTILA%=TA%
  440WHEN3:
  450REM 2nd level wibble
  460A%=0:DA%=0:TA%=6<<10:REPEAT
  470PROCidentity:PROCxrot(A%/6ANDM%)
  480J%=matrix%:PROCfill(1)
  490PROCyrot(A%/3ANDM%):PROCxrot(A%/2ANDM%):PROCzrot(A%/6ANDM%)
  500PROCfill(7):CALLdraw
  510PROCgoto:UNTILA%=TA%
  520WHEN4:
  530REM Alternating Y- and X-rotations
  540FORA%=0TOM%STEP16
  550PROCidentity:PROCyrot(A%)
  560J%=matrix%:PROCfill(1)
  570PROCidentity:PROCxrot(A%)
  580PROCfill(1):FORT%=0TO47:!J%=J%!-64:J%+=4:NEXT:CALLdraw
  590NEXT
  600WHEN5:
  610REM 1 & 2 do a slow wobble, the rest do a fast wobble
  620FORA%=0TOM%STEP4
  630PROCidentity:PROCxrot(2*A%ANDM%):PROCyrot(A%)
  640J%=matrix%:PROCfill(2)
  650PROCidentity:PROCzrot(4*A%ANDM%):PROCxrot(2*A%ANDM%):PROCyrot(5*A%ANDM%)
  660PROCfill(6):CALLdraw:NEXT
  670WHEN6:
  680REM Level 1 does a wobble, the rest spin slowly
  690A%=0:DA%=0:TA%=4<<10:REPEAT
  700PROCidentity:PROCxrot(A%>>2):PROCzrot((A%>>1)ANDM%)
  710J%=matrix%:PROCfill(1)
  720PROCidentity:PROCyrot(A%>>2):PROCfill(7):CALLdraw
  730PROCgoto:UNTILA%=TA%
  740WHEN7:
  750REM Triangle, then all but level 1 do a wobble
  760A%=0:DA%=0:TA%=256:REPEAT
  770PROCidentity:PROCxrot(A%):PROCzrot(A%)
  780J%=matrix%:PROCfill(8):CALLdraw
  790PROCgoto:UNTILA%=TA%
  800A%=0:DA%=0:TA%=4<<10:REPEAT
  810PROCidentity:PROCxrot(256):PROCzrot(256):J%=matrix%:PROCfill(1)
  820PROCidentity:PROCxrot(256+(A%>>1)ANDM%):PROCzrot(256+(A%>>2)ANDM%)
  830PROCfill(7):CALLdraw
  840PROCgoto:UNTILA%=TA%
  850A%=256:DA%=0:TA%=0:REPEAT
  860PROCidentity:PROCxrot(-A%ANDM%):PROCzrot(A%)
  870J%=matrix%:PROCfill(8):CALLdraw
  880PROCgoto:UNTILA%=TA%
  890WHEN8:
  900REM Progressive splits, followed by simultaneous recovery
  910FORB%=0TO3
  920A%=0:DA%=0:TA%=1<<9:REPEAT:J%=matrix%:PROCidentity
  930IFB%>0THENFORC%=0TOB%-1:PROCxrot(1<<7):PROCzrot(1<<6):PROCfill(1):NEXT
  940PROCxrot(A%>>2):PROCzrot(A%>>3):PROCfill(8-B%):CALLdraw
  950PROCgoto:UNTILA%=TA%:NEXT
  960FORA%=1<<7TO0STEP-2:J%=matrix%:PROCidentity
  970PROCxrot(A%):PROCzrot(A%>>1):PROCfill(1)
  980PROCxrot(A%):PROCzrot(A%>>1):PROCfill(1)
  990PROCxrot(A%):PROCzrot(A%>>1):PROCfill(1)
 1000PROCxrot(A%):PROCzrot(A%>>1):PROCfill(5)
 1010CALLdraw:NEXT
 1020WHEN9:
 1030REM Fast spin with slow spin superimposed
 1040A%=0:DA%=0:TA%=1<<14:REPEAT
 1050PROCidentity:PROCxrot((A%>>1)ANDM%):PROCzrot(A%>>4)
 1060J%=matrix%:PROCfill(8):CALLdraw
 1070PROCgoto:UNTILA%=TA%
 1080WHEN10:
 1090REM Slow tumble
 1100FORA%=0TOM%STEP4:PROCidentity
 1110PROCxrot(A%):PROCyrot(2*A%ANDM%):PROCzrot(A%)
 1120J%=matrix%:PROCfill(8):CALLdraw:NEXT
 1130WHEN11:
 1140REM Triangle, with alternate levels going opposite directions
 1150A%=0:DA%=0:TA%=256:REPEAT
 1160PROCidentity:PROCxrot(A%):PROCzrot(A%)
 1170J%=matrix%:PROCfill(8):CALLdraw
 1180PROCgoto:UNTILA%=TA%
 1190A%=0:TA%=0:FORU%=1TO4:DA%=0:TA%+=1<<9:REPEAT:J%=matrix%
 1200PROCidentity:PROCxrot(256):PROCzrot(256+A%/12ANDM%):PROCfill(1)
 1210PROCidentity:PROCxrot(256):PROCzrot(256-A%/12ANDM%):PROCfill(1)
 1220FORT%=0TO47:!J%=J%!-64:J%+=4:NEXT:CALLdraw
 1230PROCgoto:UNTILA%=TA%:NEXT
 1240A%=256:DA%=0:TA%=0:REPEAT
 1250PROCidentity:PROCxrot(A%):PROCzrot(-A%ANDM%)
 1260J%=matrix%:PROCfill(8):CALLdraw
 1270PROCgoto:UNTILA%=TA%
 1280ENDCASE
 1290ENDPROC


��display
�err$:err$="Display"
XR%=0:YR%=0:�
(=ȗX%,Y%,Z%:ȗ�640,512:YR%=YR%+X%-640�M%:XR%=XR%+Y%-512�M%
2&type%=�(0)-64:�type%>=1�type%<=26�
<	*FX21
F,DA%=0:TA%=0:�XR%>=512�A%=XR%-1024�A%=XR%
P'�:�identity:�xrot(A%�M%):�yrot(YR%)
Z+J%=matrix%:�fill(8):�draw:�goto:�A%=TA%
d,DA%=0:TA%=0:�YR%>=512�A%=YR%-1024�A%=YR%
n�:�identity:�yrot(A%�M%)
x+J%=matrix%:�fill(8):�draw:�goto:�A%=TA%
��preset(type%):XR%=0:YR%=0
��
�#�identity:�xrot(XR%):�yrot(YR%)
�J%=matrix%:�fill(8):�draw
��
��0
��
�:
���preset(type%)
��err$:err$="Display"
�Ȏtype%�
��1:
�� Y-axis spin
A%=0:DA%=0:TA%=64:�
�identity:�xrot(A%)
J%=matrix%:�fill(8):�draw
"�goto:�A%=TA%
,A%=0:DA%=0:TA%=1<<10:�
6$�identity:�yrot(A%�M%):�xrot(64)
@J%=matrix%:�fill(8):�draw
J�goto:�A%=TA%
TA%=64:DA%=0:TA%=0:�
^�identity:�xrot(A%)
hJ%=matrix%:�fill(8):�draw
r�goto:�A%=TA%
|�2:
� � X-axis spin, with a wobble
�A%=0:DA%=0:TA%=1<<10:�
�(�identity:�yrot(DA%<<3):�xrot(A%�M%)
�J%=matrix%:�fill(8):�draw
��goto:�A%=TA%
��3:
�� 2nd level wibble
�A%=0:DA%=0:TA%=6<<10:�
��identity:�xrot(A%/6�M%)
�J%=matrix%:�fill(1)
�0�yrot(A%/3�M%):�xrot(A%/2�M%):�zrot(A%/6�M%)
��fill(7):�draw
��goto:�A%=TA%
�4:
$� Alternating Y- and X-rotations
�A%=0�M%�16
&�identity:�yrot(A%)
0J%=matrix%:�fill(1)
:�identity:�xrot(A%)
D.�fill(1):�T%=0�47:!J%=J%!-64:J%+=4:�:�draw
N�
X�5:
b7� 1 & 2 do a slow wobble, the rest do a fast wobble
l�A%=0�M%�4
v&�identity:�xrot(2*A%�M%):�yrot(A%)
�J%=matrix%:�fill(2)
�:�identity:�zrot(4*A%�M%):�xrot(2*A%�M%):�yrot(5*A%�M%)
��fill(6):�draw:�
��6:
�1� Level 1 does a wobble, the rest spin slowly
�A%=0:DA%=0:TA%=4<<10:�
�,�identity:�xrot(A%>>2):�zrot((A%>>1)�M%)
�J%=matrix%:�fill(1)
�)�identity:�yrot(A%>>2):�fill(7):�draw
��goto:�A%=TA%
��7:
�0� Triangle, then all but level 1 do a wobble
�A%=0:DA%=0:TA%=256:�
!�identity:�xrot(A%):�zrot(A%)
J%=matrix%:�fill(8):�draw
�goto:�A%=TA%
 A%=0:DA%=0:TA%=4<<10:�
*7�identity:�xrot(256):�zrot(256):J%=matrix%:�fill(1)
49�identity:�xrot(256+(A%>>1)�M%):�zrot(256+(A%>>2)�M%)
>�fill(7):�draw
H�goto:�A%=TA%
RA%=256:DA%=0:TA%=0:�
\%�identity:�xrot(-A%�M%):�zrot(A%)
fJ%=matrix%:�fill(8):�draw
p�goto:�A%=TA%
z�8:
�;� Progressive splits, followed by simultaneous recovery
��B%=0�3
�.A%=0:DA%=0:TA%=1<<9:�:J%=matrix%:�identity
�7�B%>0��C%=0�B%-1:�xrot(1<<7):�zrot(1<<6):�fill(1):�
�/�xrot(A%>>2):�zrot(A%>>3):�fill(8-B%):�draw
��goto:�A%=TA%:�
�&�A%=1<<7�0�-2:J%=matrix%:�identity
�#�xrot(A%):�zrot(A%>>1):�fill(1)
�#�xrot(A%):�zrot(A%>>1):�fill(1)
�#�xrot(A%):�zrot(A%>>1):�fill(1)
�#�xrot(A%):�zrot(A%>>1):�fill(5)
��draw:�
��9:
+� Fast spin with slow spin superimposed
A%=0:DA%=0:TA%=1<<14:�
,�identity:�xrot((A%>>1)�M%):�zrot(A%>>4)
$J%=matrix%:�fill(8):�draw
.�goto:�A%=TA%
8�10:
B� Slow tumble
L�A%=0�M%�4:�identity
V&�xrot(A%):�yrot(2*A%�M%):�zrot(A%)
`J%=matrix%:�fill(8):�draw:�
j�11:
t?� Triangle, with alternate levels going opposite directions
~A%=0:DA%=0:TA%=256:�
�!�identity:�xrot(A%):�zrot(A%)
�J%=matrix%:�fill(8):�draw
��goto:�A%=TA%
�3A%=0:TA%=0:�U%=1�4:DA%=0:TA%+=1<<9:�:J%=matrix%
�5�identity:�xrot(256):�zrot(256+A%/12�M%):�fill(1)
�5�identity:�xrot(256):�zrot(256-A%/12�M%):�fill(1)
�%�T%=0�47:!J%=J%!-64:J%+=4:�:�draw
��goto:�A%=TA%:�
�A%=256:DA%=0:TA%=0:�
�%�identity:�xrot(A%):�zrot(-A%�M%)
�J%=matrix%:�fill(8):�draw
��goto:�A%=TA%
�

�
�
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00000010  18 ea 65 72 72 24 3a 65  72 72 24 3d 22 44 69 73  |..err$:err$="Dis|
00000020  70 6c 61 79 22 0d 00 1e  11 58 52 25 3d 30 3a 59  |play"....XR%=0:Y|
00000030  52 25 3d 30 3a f5 0d 00  28 3d c8 97 58 25 2c 59  |R%=0:...(=..X%,Y|
00000040  25 2c 5a 25 3a c8 97 b8  36 34 30 2c 35 31 32 3a  |%,Z%:...640,512:|
00000050  59 52 25 3d 59 52 25 2b  58 25 2d 36 34 30 80 4d  |YR%=YR%+X%-640.M|
00000060  25 3a 58 52 25 3d 58 52  25 2b 59 25 2d 35 31 32  |%:XR%=XR%+Y%-512|
00000070  80 4d 25 0d 00 32 26 74  79 70 65 25 3d a6 28 30  |.M%..2&type%=.(0|
00000080  29 2d 36 34 3a e7 74 79  70 65 25 3e 3d 31 80 74  |)-64:.type%>=1.t|
00000090  79 70 65 25 3c 3d 32 36  8c 0d 00 3c 09 2a 46 58  |ype%<=26...<.*FX|
000000a0  32 31 0d 00 46 2c 44 41  25 3d 30 3a 54 41 25 3d  |21..F,DA%=0:TA%=|
000000b0  30 3a e7 58 52 25 3e 3d  35 31 32 8c 41 25 3d 58  |0:.XR%>=512.A%=X|
000000c0  52 25 2d 31 30 32 34 8b  41 25 3d 58 52 25 0d 00  |R%-1024.A%=XR%..|
000000d0  50 27 f5 3a f2 69 64 65  6e 74 69 74 79 3a f2 78  |P'.:.identity:.x|
000000e0  72 6f 74 28 41 25 80 4d  25 29 3a f2 79 72 6f 74  |rot(A%.M%):.yrot|
000000f0  28 59 52 25 29 0d 00 5a  2b 4a 25 3d 6d 61 74 72  |(YR%)..Z+J%=matr|
00000100  69 78 25 3a f2 66 69 6c  6c 28 38 29 3a d6 64 72  |ix%:.fill(8):.dr|
00000110  61 77 3a f2 67 6f 74 6f  3a fd 41 25 3d 54 41 25  |aw:.goto:.A%=TA%|
00000120  0d 00 64 2c 44 41 25 3d  30 3a 54 41 25 3d 30 3a  |..d,DA%=0:TA%=0:|
00000130  e7 59 52 25 3e 3d 35 31  32 8c 41 25 3d 59 52 25  |.YR%>=512.A%=YR%|
00000140  2d 31 30 32 34 8b 41 25  3d 59 52 25 0d 00 6e 1c  |-1024.A%=YR%..n.|
00000150  f5 3a f2 69 64 65 6e 74  69 74 79 3a f2 79 72 6f  |.:.identity:.yro|
00000160  74 28 41 25 80 4d 25 29  0d 00 78 2b 4a 25 3d 6d  |t(A%.M%)..x+J%=m|
00000170  61 74 72 69 78 25 3a f2  66 69 6c 6c 28 38 29 3a  |atrix%:.fill(8):|
00000180  d6 64 72 61 77 3a f2 67  6f 74 6f 3a fd 41 25 3d  |.draw:.goto:.A%=|
00000190  54 41 25 0d 00 82 1e f2  70 72 65 73 65 74 28 74  |TA%.....preset(t|
000001a0  79 70 65 25 29 3a 58 52  25 3d 30 3a 59 52 25 3d  |ype%):XR%=0:YR%=|
000001b0  30 0d 00 8c 05 cc 0d 00  96 23 f2 69 64 65 6e 74  |0........#.ident|
000001c0  69 74 79 3a f2 78 72 6f  74 28 58 52 25 29 3a f2  |ity:.xrot(XR%):.|
000001d0  79 72 6f 74 28 59 52 25  29 0d 00 a0 1d 4a 25 3d  |yrot(YR%)....J%=|
000001e0  6d 61 74 72 69 78 25 3a  f2 66 69 6c 6c 28 38 29  |matrix%:.fill(8)|
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00000250  2d 61 78 69 73 20 73 70  69 6e 0d 01 04 17 41 25  |-axis spin....A%|
00000260  3d 30 3a 44 41 25 3d 30  3a 54 41 25 3d 36 34 3a  |=0:DA%=0:TA%=64:|
00000270  f5 0d 01 0e 17 f2 69 64  65 6e 74 69 74 79 3a f2  |......identity:.|
00000280  78 72 6f 74 28 41 25 29  0d 01 18 1d 4a 25 3d 6d  |xrot(A%)....J%=m|
00000290  61 74 72 69 78 25 3a f2  66 69 6c 6c 28 38 29 3a  |atrix%:.fill(8):|
000002a0  d6 64 72 61 77 0d 01 22  11 f2 67 6f 74 6f 3a fd  |.draw.."..goto:.|
000002b0  41 25 3d 54 41 25 0d 01  2c 1a 41 25 3d 30 3a 44  |A%=TA%..,.A%=0:D|
000002c0  41 25 3d 30 3a 54 41 25  3d 31 3c 3c 31 30 3a f5  |A%=0:TA%=1<<10:.|
000002d0  0d 01 36 24 f2 69 64 65  6e 74 69 74 79 3a f2 79  |..6$.identity:.y|
000002e0  72 6f 74 28 41 25 80 4d  25 29 3a f2 78 72 6f 74  |rot(A%.M%):.xrot|
000002f0  28 36 34 29 0d 01 40 1d  4a 25 3d 6d 61 74 72 69  |(64)..@.J%=matri|
00000300  78 25 3a f2 66 69 6c 6c  28 38 29 3a d6 64 72 61  |x%:.fill(8):.dra|
00000310  77 0d 01 4a 11 f2 67 6f  74 6f 3a fd 41 25 3d 54  |w..J..goto:.A%=T|
00000320  41 25 0d 01 54 17 41 25  3d 36 34 3a 44 41 25 3d  |A%..T.A%=64:DA%=|
00000330  30 3a 54 41 25 3d 30 3a  f5 0d 01 5e 17 f2 69 64  |0:TA%=0:...^..id|
00000340  65 6e 74 69 74 79 3a f2  78 72 6f 74 28 41 25 29  |entity:.xrot(A%)|
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00000370  11 f2 67 6f 74 6f 3a fd  41 25 3d 54 41 25 0d 01  |..goto:.A%=TA%..|
00000380  7c 07 c9 32 3a 0d 01 86  20 f4 20 58 2d 61 78 69  ||..2:... . X-axi|
00000390  73 20 73 70 69 6e 2c 20  77 69 74 68 20 61 20 77  |s spin, with a w|
000003a0  6f 62 62 6c 65 0d 01 90  1a 41 25 3d 30 3a 44 41  |obble....A%=0:DA|
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00000420  f4 20 32 6e 64 20 6c 65  76 65 6c 20 77 69 62 62  |. 2nd level wibb|
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000004c0  77 0d 01 fe 11 f2 67 6f  74 6f 3a fd 41 25 3d 54  |w.....goto:.A%=T|
000004d0  41 25 0d 02 08 07 c9 34  3a 0d 02 12 24 f4 20 41  |A%.....4:...$. A|
000004e0  6c 74 65 72 6e 61 74 69  6e 67 20 59 2d 20 61 6e  |lternating Y- an|
000004f0  64 20 58 2d 72 6f 74 61  74 69 6f 6e 73 0d 02 1c  |d X-rotations...|
00000500  0f e3 41 25 3d 30 b8 4d  25 88 31 36 0d 02 26 17  |..A%=0.M%.16..&.|
00000510  f2 69 64 65 6e 74 69 74  79 3a f2 79 72 6f 74 28  |.identity:.yrot(|
00000520  41 25 29 0d 02 30 17 4a  25 3d 6d 61 74 72 69 78  |A%)..0.J%=matrix|
00000530  25 3a f2 66 69 6c 6c 28  31 29 0d 02 3a 17 f2 69  |%:.fill(1)..:..i|
00000540  64 65 6e 74 69 74 79 3a  f2 78 72 6f 74 28 41 25  |dentity:.xrot(A%|
00000550  29 0d 02 44 2e f2 66 69  6c 6c 28 31 29 3a e3 54  |)..D..fill(1):.T|
00000560  25 3d 30 b8 34 37 3a 21  4a 25 3d 4a 25 21 2d 36  |%=0.47:!J%=J%!-6|
00000570  34 3a 4a 25 2b 3d 34 3a  ed 3a d6 64 72 61 77 0d  |4:J%+=4:.:.draw.|
00000580  02 4e 05 ed 0d 02 58 07  c9 35 3a 0d 02 62 37 f4  |.N....X..5:..b7.|
00000590  20 31 20 26 20 32 20 64  6f 20 61 20 73 6c 6f 77  | 1 & 2 do a slow|
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