StarInfo/Vernon/!FontTrix/Procs

Home » Archimedes archive » Acorn User » AU 1997-09 B.adf » Regulars » StarInfo/Vernon/!FontTrix/Procs

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.

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Filename:	StarInfo/Vernon/!FontTrix/Procs
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File contents

   10REM >        !Font_SR Library
   20REM Program  !Font_SR - Scaling and Rotation of Fonts from BASIC
   30REM Version  A 1.00
   40REM Author   Keith Vernon
   50REM Date     March 1997
   60REM Program  Subject to Copyright
   70REM          Not Public Domain
   80:
   90DEF PROCinitialise(bgc%,bgt%)
  100ON ERROR REPORT: PROCreset_fontmax: PRINT" at line ";ERL: ON: END
  110DIM b% 64,s% 256,tmat% 256
  120MODE 15: GCOL128+bgc%TINTbgt%: CLG: OFF
  130SYS "Font_ReadScaleFactor" TO ,sfactx%,sfacty%
  140ENDPROC
  150:
  160DEF FNopen_font(font$, fxp%,fyp%, fgc%,fgt%, bgc%,bgt%)
  170SYS "Font_FindFont",,font$,fxp%*16,fyp%*16 TO handle%
  180fgnd%=FNconvert_col(fgc%,fgt%)
  190bgnd%=FNconvert_col(bgc%,bgt%)
  200SYS "ColourTrans_SetFontColours",handle%,bgnd%,fgnd%,14
  210=handle%
  220:
  230DEF FNconvert_col(gcol%,tint%)
  240tint%=tint%>>>6
  250red%=(((gcol% AND 3)<<2)+tint%)<<12
  260green%=((gcol% AND 12)+tint%)<<20
  270blue%=(((gcol% AND 48)>>>2)+tint%)<<28
  280=red%+green%+blue%
  290:
  300DEF PROCfont_scale(fontn%,$s%,te,tf,scx,scy)
  310SYS "Font_SetFont",fontn%
  320$s%+=CHR$(0)
  330PROCfont_trans(scx,0,0,scy,te,tf)
  340SYS "Font_Paint",fontn%,s%,%1000000,,,,tmat%
  350ENDPROC
  360:
  370DEF PROCfont_SR(fontn%,$s%,fx%,fy%,sangle%,scx,scy)
  380SYS "Font_SetFont",fontn%
  390$s%+=CHR$(0)
  400tx=COSRADsangle%: ty=SINRADsangle%
  410PROCfont_trans(tx,ty,ty,tx,fx%,fy%)
  420SYS "Font_Paint",fontn%,s%,%1000000,,,,tmat%
  430ENDPROC
  440:
  450DEF PROCclose_font(fontn%): SYS "Font_LoseFont",fontn%: ENDPROC
  460:
  470DEF PROCfont_trans(ta,tb,tc,td,te,tf)
  480tmat%!0=ta*65536*scx:    tmat%!4=tb*65536*scx
  490tmat%!8=-(tc*65536)*scy: tmat%!12=td*65536*scy
  500tmat%!16=te*sfactx%:     tmat%!20=tf*sfacty%
  510ENDPROC
  520:
  530:******************************************************************
  540:
  550DEF PROCfont_arc(fontn%,$s%,te,tf,sangle%,eangle%,stepang%,scx,scy)
  560SYS "Font_SetFont",fontn%
  570$s%+=CHR$(0)
  580IF stepang%=0 ERROR 1,"Angle step size cannot be zero in PROCfont_arc"
  590FOR omega%=sangle% TO eangle% STEP stepang%
  600  tx=COSRADomega%
  610  ty=SINRADomega%
  620  PROCfont_trans(tx,ty,ty,tx,te,tf)
  630  SYS "Font_Paint",fontn%,s%,%1000000,,,,tmat%
  640NEXT
  650ENDPROC
  660:
  670DEF PROCsinewave(fontn%,$s%,mag,inc_mag)
  680FOR sangle%=-180 TO 0 STEP 15
  690  _x%=sangle%*3+550: _y%=500+300*SINRADsangle%
  700  PROCfont_scale(fontn%,$s%,_x%,_y%,mag,mag)
  710  mag+=inc_mag
  720NEXT
  730FOR sangle%=15 TO 180 STEP 15
  740  _x%=sangle%*3+550: _y%=500+300*SINRADsangle%
  750  PROCfont_scale(fontn%,$s%,_x%,_y%,mag,mag)
  760  mag-=inc_mag
  770NEXT
  780ENDPROC
  790:
  800DEF PROCcircular_string(fontn%,$s%,angmod%,te,tf,frad%,scx,scy)
  810SYS "Font_SetFont",fontn%
  820$s%+=CHR$(0): _w%=0
  830FOR i%=1 TO LEN($s%)
  840  i$=MID$($s%,i%,1)
  850  SYS "Font_CharBBox",fontn%,ASC(i$),%10000 TO ,xmin%,,xmax%
  860  _w%+=xmax%-xmin%
  870  IF (xmax%-xmin%)<=8 _w%+=16
  880NEXT
  890totalw%=_w%
  900_w%=0: _half%=0
  910FOR i%=1 TO LEN($s%)
  920  i$=MID$($s%,i%,1)
  930  SYS "Font_CharBBox",fontn%,ASC(i$),%10000 TO ,xmin%,,xmax%
  940  _half%=(xmax%-xmin%)/2
  950  IF (xmax%-xmin%)<=8 _half%+=8
  960  _w%+=_half%
  970  omega%=-1*(INT(_w%/totalw%*360)-180)-angmod%
  980  _w%+=_half%
  990  tx=COSRAD(omega%-90)*scx
 1000  ty=SINRAD(omega%-90)*scy
 1010  tex=te+COSRAD(omega%)*frad%
 1020  tfy=tf+SINRAD(omega%)*frad%
 1030  PROCfont_trans(tx,ty,ty,tx,tex,tfy)
 1040  SYS "Font_Paint",fontn%,i$,%1000000,,,,tmat%
 1050NEXT
 1060ENDPROC
 1070:
 1080:******************************************************************
 1090:
 1100REM Miscellaneous extras
 1110:
 1120DEF FNscan_width(f%,$s%)
 1130$s%+=CHR$(0)
 1140!b%=0: b%!4=0: b%!8=0: b%!12=0: b%!16=-1: b%!20=0: b%!24=0: b%!28=0: b%!32=0
 1150SYS "Font_ScanString",f%,s%,&40120,(1<<31),(1<<31),b% :REM PRM 3-483
 1160SYS "Font_ConverttoOS",,b%!20 TO ,minx%  :REM PRM 3-438
 1170SYS "Font_ConverttoOS",,b%!28 TO ,maxx%
 1180=(maxx%-minx%)
 1190:
 1200DEF FNscan_height(f%,$s%)
 1210$s%+=CHR$(0)
 1220!b%=0: b%!4=0: b%!8=0: b%!12=0: b%!16=-1: b%!20=0: b%!24=0: b%!28=0: b%!32=0
 1230SYS "Font_ScanString",f%,s%,&40120,(1<<31),(1<<31),b%
 1240SYS "Font_ConverttoOS",,,b%!24 TO ,,miny%
 1250SYS "Font_ConverttoOS",,,b%!32 TO ,,maxy%
 1260=(maxy%-miny%)
 1270:
 1280DEF PROCset_fontmax(fm2%,fm3%)
 1290SYS "Font_ReadFontMax" TO fm0%,fm1%,init_fm2%,init_fm3%,fm4%,fm5%
 1300SYS "Font_SetFontMax",fm0%,fm1%,fm2%,fm3%,fm4%,fm5%
 1310ENDPROC
 1320:
 1330DEF PROCreset_fontmax
 1340SYS "Font_ReadFontMax" TO fm0%,fm1%,,,fm4%,fm5%
 1350SYS "Font_SetFontMax",fm0%,fm1%,init_fm2%,init_fm3%,fm4%,fm5%
 1360ENDPROC
 1370:


� >        !Font_SR Library
B� Program  !Font_SR - Scaling and Rotation of Fonts from BASIC
� Version  A 1.00
(� Author   Keith Vernon
2� Date     March 1997
<#� Program  Subject to Copyright
F �          Not Public Domain
P:
Z� �initialise(bgc%,bgt%)
d/� � �: �reset_fontmax: �" at line ";�: �: �
n� b% 64,s% 256,tmat% 256
x� 15: �128+bgc%Ȝbgt%: �: �
�0ș "Font_ReadScaleFactor" � ,sfactx%,sfacty%
��
�:
�8� �open_font(font$, fxp%,fyp%, fgc%,fgt%, bgc%,bgt%)
�7ș "Font_FindFont",,font$,fxp%*16,fyp%*16 � handle%
�!fgnd%=�convert_col(fgc%,fgt%)
�!bgnd%=�convert_col(bgc%,bgt%)
�:ș "ColourTrans_SetFontColours",handle%,bgnd%,fgnd%,14
�=handle%
�:
�� �convert_col(gcol%,tint%)
�tint%=tint%>>>6
�%red%=(((gcol% � 3)<<2)+tint%)<<12
#green%=((gcol% � 12)+tint%)<<20
(blue%=(((gcol% � 48)>>>2)+tint%)<<28
=red%+green%+blue%
":
,+� �font_scale(fontn%,$s%,te,tf,scx,scy)
6ș "Font_SetFont",fontn%
@
$s%+=�(0)
J"�font_trans(scx,0,0,scy,te,tf)
T/ș "Font_Paint",fontn%,s%,%1000000,,,,tmat%
^�
h:
r2� �font_SR(fontn%,$s%,fx%,fy%,sangle%,scx,scy)
|ș "Font_SetFont",fontn%
�
$s%+=�(0)
�tx=��sangle%: ty=��sangle%
�$�font_trans(tx,ty,ty,tx,fx%,fy%)
�/ș "Font_Paint",fontn%,s%,%1000000,,,,tmat%
��
�:
�7� �close_font(fontn%): ș "Font_LoseFont",fontn%: �
�:
�$� �font_trans(ta,tb,tc,td,te,tf)
�1tmat%!0=ta*65536*scx:    tmat%!4=tb*65536*scx
�2tmat%!8=-(tc*65536)*scy: tmat%!12=td*65536*scy
�0tmat%!16=te*sfactx%:     tmat%!20=tf*sfacty%
��
:
G:******************************************************************
:
&B� �font_arc(fontn%,$s%,te,tf,sangle%,eangle%,stepang%,scx,scy)
0ș "Font_SetFont",fontn%
:
$s%+=�(0)
DE� stepang%=0 � 1,"Angle step size cannot be zero in PROCfont_arc"
N)� omega%=sangle% � eangle% � stepang%
X  tx=��omega%
b  ty=��omega%
l$  �font_trans(tx,ty,ty,tx,te,tf)
v1  ș "Font_Paint",fontn%,s%,%1000000,,,,tmat%
��
��
�:
�'� �sinewave(fontn%,$s%,mag,inc_mag)
�� sangle%=-180 � 0 � 15
�.  _x%=sangle%*3+550: _y%=500+300*��sangle%
�-  �font_scale(fontn%,$s%,_x%,_y%,mag,mag)
�  mag+=inc_mag
��
�� sangle%=15 � 180 � 15
�.  _x%=sangle%*3+550: _y%=500+300*��sangle%
�-  �font_scale(fontn%,$s%,_x%,_y%,mag,mag)
�  mag-=inc_mag
�
�
:
 >� �circular_string(fontn%,$s%,angmod%,te,tf,frad%,scx,scy)
*ș "Font_SetFont",fontn%
4$s%+=�(0): _w%=0
>� i%=1 � �($s%)
H  i$=�$s%,i%,1)
R<  ș "Font_CharBBox",fontn%,�(i$),%10000 � ,xmin%,,xmax%
\  _w%+=xmax%-xmin%
f   � (xmax%-xmin%)<=8 _w%+=16
p�
ztotalw%=_w%
�_w%=0: _half%=0
�� i%=1 � �($s%)
�  i$=�$s%,i%,1)
�<  ș "Font_CharBBox",fontn%,�(i$),%10000 � ,xmin%,,xmax%
�  _half%=(xmax%-xmin%)/2
�"  � (xmax%-xmin%)<=8 _half%+=8
�  _w%+=_half%
�0  omega%=-1*(�(_w%/totalw%*360)-180)-angmod%
�  _w%+=_half%
�  tx=��(omega%-90)*scx
�  ty=��(omega%-90)*scy
�  tex=te+��(omega%)*frad%
�  tfy=tf+��(omega%)*frad%
&  �font_trans(tx,ty,ty,tx,tex,tfy)
1  ș "Font_Paint",fontn%,i$,%1000000,,,,tmat%
�
$�
.:
8G:******************************************************************
B:
L� Miscellaneous extras
V:
`� �scan_width(f%,$s%)
j
$s%+=�(0)
tP!b%=0: b%!4=0: b%!8=0: b%!12=0: b%!16=-1: b%!20=0: b%!24=0: b%!28=0: b%!32=0
~Eș "Font_ScanString",f%,s%,&40120,(1<<31),(1<<31),b% :� PRM 3-483
�7ș "Font_ConverttoOS",,b%!20 � ,minx%  :� PRM 3-438
�)ș "Font_ConverttoOS",,b%!28 � ,maxx%
�=(maxx%-minx%)
�:
�� �scan_height(f%,$s%)
�
$s%+=�(0)
�P!b%=0: b%!4=0: b%!8=0: b%!12=0: b%!16=-1: b%!20=0: b%!24=0: b%!28=0: b%!32=0
�8ș "Font_ScanString",f%,s%,&40120,(1<<31),(1<<31),b%
�+ș "Font_ConverttoOS",,,b%!24 � ,,miny%
�+ș "Font_ConverttoOS",,,b%!32 � ,,maxy%
�=(maxy%-miny%)
�:
� �set_fontmax(fm2%,fm3%)

Cș "Font_ReadFontMax" � fm0%,fm1%,init_fm2%,init_fm3%,fm4%,fm5%
6ș "Font_SetFontMax",fm0%,fm1%,fm2%,fm3%,fm4%,fm5%
�
(:
2� �reset_fontmax
<1ș "Font_ReadFontMax" � fm0%,fm1%,,,fm4%,fm5%
F@ș "Font_SetFontMax",fm0%,fm1%,init_fm2%,init_fm3%,fm4%,fm5%
P�
Z:
�

00000000  0d 00 0a 1f f4 20 3e 20  20 20 20 20 20 20 20 21  |..... >        !|
00000010  46 6f 6e 74 5f 53 52 20  4c 69 62 72 61 72 79 0d  |Font_SR Library.|
00000020  00 14 42 f4 20 50 72 6f  67 72 61 6d 20 20 21 46  |..B. Program  !F|
00000030  6f 6e 74 5f 53 52 20 2d  20 53 63 61 6c 69 6e 67  |ont_SR - Scaling|
00000040  20 61 6e 64 20 52 6f 74  61 74 69 6f 6e 20 6f 66  | and Rotation of|
00000050  20 46 6f 6e 74 73 20 66  72 6f 6d 20 42 41 53 49  | Fonts from BASI|
00000060  43 0d 00 1e 15 f4 20 56  65 72 73 69 6f 6e 20 20  |C..... Version  |
00000070  41 20 31 2e 30 30 0d 00  28 1b f4 20 41 75 74 68  |A 1.00..(.. Auth|
00000080  6f 72 20 20 20 4b 65 69  74 68 20 56 65 72 6e 6f  |or   Keith Verno|
00000090  6e 0d 00 32 19 f4 20 44  61 74 65 20 20 20 20 20  |n..2.. Date     |
000000a0  4d 61 72 63 68 20 31 39  39 37 0d 00 3c 23 f4 20  |March 1997..<#. |
000000b0  50 72 6f 67 72 61 6d 20  20 53 75 62 6a 65 63 74  |Program  Subject|
000000c0  20 74 6f 20 43 6f 70 79  72 69 67 68 74 0d 00 46  | to Copyright..F|
000000d0  20 f4 20 20 20 20 20 20  20 20 20 20 4e 6f 74 20  | .          Not |
000000e0  50 75 62 6c 69 63 20 44  6f 6d 61 69 6e 0d 00 50  |Public Domain..P|
000000f0  05 3a 0d 00 5a 1c dd 20  f2 69 6e 69 74 69 61 6c  |.:..Z.. .initial|
00000100  69 73 65 28 62 67 63 25  2c 62 67 74 25 29 0d 00  |ise(bgc%,bgt%)..|
00000110  64 2f ee 20 85 20 f6 3a  20 f2 72 65 73 65 74 5f  |d/. . .: .reset_|
00000120  66 6f 6e 74 6d 61 78 3a  20 f1 22 20 61 74 20 6c  |fontmax: ." at l|
00000130  69 6e 65 20 22 3b 9e 3a  20 ee 3a 20 e0 0d 00 6e  |ine ";.: .: ...n|
00000140  1c de 20 62 25 20 36 34  2c 73 25 20 32 35 36 2c  |.. b% 64,s% 256,|
00000150  74 6d 61 74 25 20 32 35  36 0d 00 78 1f eb 20 31  |tmat% 256..x.. 1|
00000160  35 3a 20 e6 31 32 38 2b  62 67 63 25 c8 9c 62 67  |5: .128+bgc%..bg|
00000170  74 25 3a 20 da 3a 20 87  0d 00 82 30 c8 99 20 22  |t%: .: ....0.. "|
00000180  46 6f 6e 74 5f 52 65 61  64 53 63 61 6c 65 46 61  |Font_ReadScaleFa|
00000190  63 74 6f 72 22 20 b8 20  2c 73 66 61 63 74 78 25  |ctor" . ,sfactx%|
000001a0  2c 73 66 61 63 74 79 25  0d 00 8c 05 e1 0d 00 96  |,sfacty%........|
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000001c0  6e 74 28 66 6f 6e 74 24  2c 20 66 78 70 25 2c 66  |nt(font$, fxp%,f|
000001d0  79 70 25 2c 20 66 67 63  25 2c 66 67 74 25 2c 20  |yp%, fgc%,fgt%, |
000001e0  62 67 63 25 2c 62 67 74  25 29 0d 00 aa 37 c8 99  |bgc%,bgt%)...7..|
000001f0  20 22 46 6f 6e 74 5f 46  69 6e 64 46 6f 6e 74 22  | "Font_FindFont"|
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00000220  25 0d 00 b4 21 66 67 6e  64 25 3d a4 63 6f 6e 76  |%...!fgnd%=.conv|
00000230  65 72 74 5f 63 6f 6c 28  66 67 63 25 2c 66 67 74  |ert_col(fgc%,fgt|
00000240  25 29 0d 00 be 21 62 67  6e 64 25 3d a4 63 6f 6e  |%)...!bgnd%=.con|
00000250  76 65 72 74 5f 63 6f 6c  28 62 67 63 25 2c 62 67  |vert_col(bgc%,bg|
00000260  74 25 29 0d 00 c8 3a c8  99 20 22 43 6f 6c 6f 75  |t%)...:.. "Colou|
00000270  72 54 72 61 6e 73 5f 53  65 74 46 6f 6e 74 43 6f  |rTrans_SetFontCo|
00000280  6c 6f 75 72 73 22 2c 68  61 6e 64 6c 65 25 2c 62  |lours",handle%,b|
00000290  67 6e 64 25 2c 66 67 6e  64 25 2c 31 34 0d 00 d2  |gnd%,fgnd%,14...|
000002a0  0c 3d 68 61 6e 64 6c 65  25 0d 00 dc 05 3a 0d 00  |.=handle%....:..|
000002b0  e6 1f dd 20 a4 63 6f 6e  76 65 72 74 5f 63 6f 6c  |... .convert_col|
000002c0  28 67 63 6f 6c 25 2c 74  69 6e 74 25 29 0d 00 f0  |(gcol%,tint%)...|
000002d0  13 74 69 6e 74 25 3d 74  69 6e 74 25 3e 3e 3e 36  |.tint%=tint%>>>6|
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00000300  29 3c 3c 31 32 0d 01 04  23 67 72 65 65 6e 25 3d  |)<<12...#green%=|
00000310  28 28 67 63 6f 6c 25 20  80 20 31 32 29 2b 74 69  |((gcol% . 12)+ti|
00000320  6e 74 25 29 3c 3c 32 30  0d 01 0e 28 62 6c 75 65  |nt%)<<20...(blue|
00000330  25 3d 28 28 28 67 63 6f  6c 25 20 80 20 34 38 29  |%=(((gcol% . 48)|
00000340  3e 3e 3e 32 29 2b 74 69  6e 74 25 29 3c 3c 32 38  |>>>2)+tint%)<<28|
00000350  0d 01 18 16 3d 72 65 64  25 2b 67 72 65 65 6e 25  |....=red%+green%|
00000360  2b 62 6c 75 65 25 0d 01  22 05 3a 0d 01 2c 2b dd  |+blue%..".:..,+.|
00000370  20 f2 66 6f 6e 74 5f 73  63 61 6c 65 28 66 6f 6e  | .font_scale(fon|
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00000390  78 2c 73 63 79 29 0d 01  36 1c c8 99 20 22 46 6f  |x,scy)..6... "Fo|
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000003b0  6e 25 0d 01 40 0d 24 73  25 2b 3d bd 28 30 29 0d  |n%..@.$s%+=.(0).|
000003c0  01 4a 22 f2 66 6f 6e 74  5f 74 72 61 6e 73 28 73  |.J".font_trans(s|
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000003f0  69 6e 74 22 2c 66 6f 6e  74 6e 25 2c 73 25 2c 25  |int",fontn%,s%,%|
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00000420  f2 66 6f 6e 74 5f 53 52  28 66 6f 6e 74 6e 25 2c  |.font_SR(fontn%,|
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00000440  6c 65 25 2c 73 63 78 2c  73 63 79 29 0d 01 7c 1c  |le%,scx,scy)..|.|
00000450  c8 99 20 22 46 6f 6e 74  5f 53 65 74 46 6f 6e 74  |.. "Font_SetFont|
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000004b0  78 25 2c 66 79 25 29 0d  01 a4 2f c8 99 20 22 46  |x%,fy%).../.. "F|
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000004e0  2c 74 6d 61 74 25 0d 01  ae 05 e1 0d 01 b8 05 3a  |,tmat%.........:|
000004f0  0d 01 c2 37 dd 20 f2 63  6c 6f 73 65 5f 66 6f 6e  |...7. .close_fon|
00000500  74 28 66 6f 6e 74 6e 25  29 3a 20 c8 99 20 22 46  |t(fontn%): .. "F|
00000510  6f 6e 74 5f 4c 6f 73 65  46 6f 6e 74 22 2c 66 6f  |ont_LoseFont",fo|
00000520  6e 74 6e 25 3a 20 e1 0d  01 cc 05 3a 0d 01 d6 24  |ntn%: .....:...$|
00000530  dd 20 f2 66 6f 6e 74 5f  74 72 61 6e 73 28 74 61  |. .font_trans(ta|
00000540  2c 74 62 2c 74 63 2c 74  64 2c 74 65 2c 74 66 29  |,tb,tc,td,te,tf)|
00000550  0d 01 e0 31 74 6d 61 74  25 21 30 3d 74 61 2a 36  |...1tmat%!0=ta*6|
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