perm filename PIX.SAI[PIX,HPM]35 blob
sn#275546 filedate 1977-04-12 generic text, type C, neo UTF8
COMMENT ⊗ VALID 00047 PAGES
C REC PAGE DESCRIPTION
C00001 00001
C00006 00002 BEGIN "PIX"
C00012 00003 IF CHR="?" THEN
C00015 00004 IF CHR="T" THEN comment take a picture via a camera
C00017 00005 IF CHR="↑" THEN comment optimize clip levels
C00022 00006 IF CHR="←" THEN comment alter camera number
C00023 00007 IF CHR="B" THEN comment alter bits/pixel, size and # to average
C00025 00008 IF CHR="I" THEN comment input a file
C00027 00009 IF CHR="%" THEN comment give information about a file
C00030 00010 IF CHR="/" THEN comment input a portion of a file
C00033 00011 IF CHR="O" THEN comment output a file
C00034 00012 IF CHR="D"∨CHR="∂" THEN comment video synthesizer display
C00039 00013 IF CHR="∃" THEN comment quick and dirty video synthesizer display
C00043 00014 IF CHR="H" THEN comment high quality halftone
C00047 00015 IF CHR="R" THEN comment random halftone
C00049 00016 IF CHR="A" THEN comment arty bug halftone
C00051 00017 IF CHR="X" THEN comment send previous halftone to the XGP
C00052 00018 IF CHR=">" THEN comment make a DD buffer into an MIT transferrable file
C00053 00019 IF CHR="<" THEN comment display MIT transferrable file
C00055 00020 IF CHR="#" THEN comment switch a video switch output
C00056 00021 IF CHR="P" THEN comment list a picture on the tty
C00059 00022 IF CHR="α" THEN comment add a letter to a font
C00061 00023 IF CHR="π" THEN comment output dd buf to jarvis term.
C00062 00024 IF CHR="λ" THEN comment make an XGPable file
C00064 00025 IF CHR="C" THEN comment step past a certain number of pictures
C00065 00026 IF CHR="K" THEN comment clear the video synthesizer
C00066 00027 IF CHR="≡" THEN comment gronk synthesizer intensity table
C00068 00028 IF CHR="S" THEN comment change size of displays
C00075 00029 IF CHR="F" THEN comment high pass filter
C00076 00030 IF CHR="&" THEN comment measure noise
C00077 00031 IF CHR="L" THEN comment low pass filter
C00078 00032 IF CHR="W" THEN comment select a window
C00081 00033 IF CHR="Z" THEN comment change size of a picture
C00084 00034 IF CHR="ε" THEN comment make DD buffer into a picture
C00086 00035 IF CHR="*" THEN comment general geometric transformation
C00091 00036 IF CHR="U" THEN comment remove blank border from a picture
C00093 00037 IF CHR="N" THEN comment apply noise remover
C00094 00038 IF CHR="V" THEN comment apply interest operator
C00095 00039 IF CHR="M" THEN comment pixel modification
C00097 00040 IF CHR="G" THEN comment graph a histogram
C00100 00041 IF CHR="J" THEN comment graph a histogram
C00103 00042 IF CHR="E" THEN comment apply histogram normalizer
C00106 00043 IF CHR="Y" THEN comment apply vert sync loss correction
C00107 00044 IF CHR="∞" THEN comment for hackery
C00109 00045 IF CHR="Q" THEN comment exit
C00110 00046 BEGIN comment an unrecognized character
C00112 00047 END
C00115 ENDMK
C⊗;
BEGIN "PIX"
REQUIRE "VIXHDR.SAI[VIS,HPM]" SOURCE_FILE;
REQUIRE "FILHDR.SAI[VIS,HPM]" SOURCE_FILE;
require "outdd.rel[s,pmf]" load_module;
external procedure outdd(string s; INTEGER SPOS(2), PPOS(-1));
INTEGER CAMERA,CHR,HIG,WID,BITS,PWANT,PHAVE,PDEFAULT;
STRING BACKLOG; REAL SSIZE,HSIZE,SASPECT,HASPECT;
INTEGER SDISWID,SDISHIG,SYPOS; REAL MAPTF; INTEGER MAPBT;
INTEGER HDISWID,HDISHIG,HAPOS;
BOOLEAN INITED,SYNLAS,HAFTONE;
INTEGER BCL,TCL,SUMS,XEE,YEE,NRTRY;
boolean outddcalled;
REAL TASPECT,TLEN,TWID;
BOOLEAN TBRITE;
REAL LXB,LYB,UXB,UYB;
STRING INPOOT;
INTEGER PROCEDURE UCONV(INTEGER I);
RETURN(IF I>'140 ∧ I≤'172 THEN I LAND '137 ELSE I);
INTEGER PROCEDURE PNEXTCH;
RETURN(IF LENGTH(INPOOT)=0 THEN 0 ELSE INPOOT);
INTEGER PROCEDURE NEXTCH;
BEGIN
INTEGER NXC,M,FOO; OWN INTEGER EOF; OWN STRING FN;
PRELOAD_WITH -1; OWN INTEGER ARRAY DEVICE[1:1];
WHILE TRUE DO
IF DEVICE[1]=-1 THEN
BEGIN
IF LENGTH(INPOOT)=0 THEN INPOOT←INCHWL&"↔";
NXC←LOP(INPOOT);
IF NXC="@" THEN
BEGIN
STRING IFL;
DEVICE[1]←GETCHAN;
IFL←"";
WHILE (NXC←LOP(INPOOT))≠"↔" DO IFL←IFL&NXC;
PRSFIL("↓↓:↓↓.↓↓[↓↓,↓↓]");
PRSFIL(FN);
PRSFIL(IFL);
EOF←TRUE;
OPEN(DEVICE[1],DEVPRS,0,3,0,10,FOO,EOF);
LOOKUP(DEVICE[1],FILPRS,EOF);
BREAKSET(1,"","A");
BREAKSET(1,'12,"X");
BREAKSET(1,'12,"O");
OUTSTR(" reading "&DEVPRS&":"&FILPRS&'15&'12);
FN←DEVPRS&":"&FILPRS;
END
ELSE RETURN(NXC);
END
ELSE
IF EOF THEN
BEGIN
OUTSTR(" finished "&FN&'15&'12);
RELEASE(DEVICE[1]);
DEVICE[1]←-1;
END
ELSE
BEGIN
NXC←INPUT(DEVICE[1],1);
IF NXC='15 THEN NXC←"↔";
RETURN(NXC);
END;
END;
INTEGER PROCEDURE UINCHRW;
BEGIN
INTEGER CH;
DO CH←NEXTCH UNTIL CH≠"↔";
IF EQU(INPOOT,"↔") THEN NEXTCH;
RETURN(CH);
END;
STRING PROCEDURE UINCHWL;
BEGIN
STRING UINCH; INTEGER NC;
UINCH←"";
WHILE (NC←NEXTCH)≠"↔" DO UINCH←UINCH&NC;
RETURN(UINCH);
END;
PROCEDURE UOUTSTR(STRING STRN);
IF PNEXTCH=0 THEN OUTSTR(STRN);
LXB←LYB←-1; UXB←UYB←1;
BCL←7; TCL←0;
YEE←0; XEE←1;
CAMERA←'54; BACKLOG←""; INITED←FALSE; SYNLAS←TRUE; HAFTONE←FALSE;
HIG←260; WID←288; BITS←4; SUMS←1;
PDEFAULT←PWANT←PHAVE←PIXDIM(HIG,WID,BITS);
TASPECT←3/10; TLEN←21; TWID←80; TBRITE←TRUE; NRTRY←15;
SSIZE←HSIZE←.5; SASPECT←HASPECT←481/512; MAPTF←1; MAPBT←4;
SDISWID←HDISWID←SDISHIG←HDISHIG←1; HAPOS←SYPOS←1;
INPOOT←"";
DDINIT; SCREEN(-1,-1,1,1);
synmap(0,-1);
outddcalled←false;
OUTSTR("TYPE ?<CR> FOR COMMAND LIST"&'15&'12);
WHILE TRUE DO
BEGIN
INTEGER ARRAY PIC[0:PHAVE];
IF PHAVE=PDEFAULT THEN
BEGIN
MAKPIX(HIG,WID,BITS,PIC[0]);
INITED←TRUE;
END;
WHILE PHAVE=PWANT DO
BEGIN
MAPBT←MAPBT MAX PIC[BYBI];
IF LENGTH(BACKLOG)=0 THEN
BEGIN
OUTSTR("*");
DO CHR←UCONV(UINCHRW) UNTIL CHR≠'15;
END
ELSE CHR←UCONV(LOP(BACKLOG));
IF CHR="?" THEN
BEGIN
outddcalled←true;
OUTdd(" Pix Commands
""T"" take a picture from currently selected source
""B"", ""↑"", ""←"" set video digitizer parameters.
B bits/sample, window, ↑ clip levels, ← video source (default=44)
""I"", ""O"" input or output pictures from or to a file
""%"", ""/"" for very large files. % gets dimensions, / reads in a part
""D"", ""∂"", ""∃"" display on the video synthesizer, ∂ with grid, ∃ fast
""H"", ""R"" or ""A"" display it as a halftone (H good, R random, A arty)
""P"", ""λ"" for a character display. P on the terminal, λ for halftone fonts
""X"", ""ε"", ""α"", ""π"", "">"", ""<"" copy the last DD display
X to XGP, ε to picture, α to font, π to PJ dpy, > to and < from MIT files
""S"" set multiplicity, shape and size of displays. default=1x1, 1/2 size
""C"" skip past a number of slots (when displaying multiple pictures)
""K"", ""≡"" affect video synthesizer, K clear it, ≡ adjust intensity table
""#"" connect a foreign video switch line to a given channel
""W"", ""Z"", ""*"" geometric tranforms. W window, Z size, * general
""Y"", ""U"" fix a picture. Y vertical sync, U remove black border
""F"", ""L"", ""N"" or ""V"" filter the picture
F high pass, L low pass (halve resolution), N remove noise, V interest
""G"" or ""J"" graph the numbers of each grey level. G raw, J integrated
""E"" enhance a picture (normalize the instances of each grey level)
""M"" modify grey levels via a function (entered piecewise linear)
""Q"" quit
Commands may combined in a line using ↔ for carriage return
");
END
ELSE
IF CHR="T" THEN comment take a picture via a camera;
BEGIN
INTEGER NRT;
IF PHAVE=PDEFAULT THEN
BEGIN
IF ¬INITED THEN
BEGIN
MAKPIX(HIG,WID,BITS,PIC[0]);
INITED←TRUE;
END;
NRT←CAMPIX(CAMERA,YEE,XEE,PIC[0],SUMS,BCL,TCL,NRTRY);
OUTSTR(" "&(IF NRT<0 THEN " aborted "&DEVPRS&":"&FILPRS ELSE
CVS(NRT)&" RETR"&(IF NRT≠1 THEN "IES" ELSE "Y"))&'15&'12);
IF NRT≥0 THEN
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
END
ELSE
BEGIN
BACKLOG←"T";
PWANT←PDEFAULT;
END;
END
ELSE
IF CHR="↑" THEN comment optimize clip levels;
BEGIN
STRING SIN; INTEGER FOO;
UOUTSTR("<CR> FOR AUTO OR TCLIP, BCLIP (0≤TCLIP≤BCLIP≤7):"); SIN←UINCHWL;
IF LENGTH(SIN)≠0 THEN
BEGIN
TCL←INTSCAN(SIN,FOO);
BCL←INTSCAN(SIN,FOO);
END
ELSE
BEGIN
INTEGER NRT;
NRT←CLPADJ(CAMERA,BCL,TCL);
IF NRT<0 THEN OUTSTR(" aborted "&DEVPRS&":"&FILPRS&'15&'12) ELSE
IF NRT>0 THEN OUTSTR(" "&CVS(NRT)&
" RETR"&(IF NRT≠1 THEN "IES" ELSE "Y")&'15&'12);
OUTSTR("TCLIP="&CVS(TCL)&" BCLIP="&CVS(BCL)&'15&'12);
END;
END
ELSE
IF CHR="←" THEN comment alter camera number;
BEGIN
UOUTSTR(" CHANNEL NUMBER:");
CAMERA←CVO(UINCHWL);
BCL←7; TCL←0;
END
ELSE
IF CHR="B" THEN comment alter bits/pixel, size and # to average;
BEGIN
INTEGER T,FOO; STRING INST;
UOUTSTR(" PICTURE HEIGHT, WIDTH (NOW "&CVS(HIG)&", "&CVS(WID)&"):");
INST←UINCHWL;
IF LENGTH(INST)>2 THEN
BEGIN
HIG←INTSCAN(INST,FOO); WID←INTSCAN(INST,FOO);
END;
UOUTSTR(" PICTURE YEDGE, XEDGE (NOW "&CVS(YEE%2)&", "&CVS(XEE)&"):");
INST←UINCHWL;
IF LENGTH(INST)>2 THEN
BEGIN
YEE←2*INTSCAN(INST,FOO); XEE←INTSCAN(INST,FOO) MAX 1;
END;
UOUTSTR(" NO. OF PICTURES TO AVERAGE (NOW "&CVS(SUMS)&"):");
T←CVD(UINCHWL); IF T>0 THEN SUMS←T;
UOUTSTR(" BITS/PIXEL (NOW "&CVS(BITS)&"):");
T←CVD(UINCHWL); IF T>0 THEN BITS←T MIN 36;
UOUTSTR(" SUPPRESS PARTIAL RETRIES?");
NRTRY←(IF (UINCHWL LAND '137)="Y" THEN -200 ELSE 100);
PDEFAULT←PWANT←PIXDIM(HIG,WID,BITS);
END
ELSE
IF CHR="I" THEN comment input a file;
BEGIN
OWN STRING FN;
IF LENGTH(BACKLOG)=0 THEN
BEGIN
PRSFIL("↓↓:↓↓.↓↓[↓↓,↓↓]");
PRSFIL(FN);
UOUTSTR("FILE:");
IF LENGTH(FN←UINCHWL)>0 ∧ PFLDIM(FN)>0 THEN
BEGIN
PWANT←PFLDIM(FN);
BACKLOG←"I"&FN;
END ELSE OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
BEGIN
GETPFL(BACKLOG,PIC[0]);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
BACKLOG←"";
INITED←FALSE;
FN←DEVPRS&":"&FILPRS;
END;
END
ELSE
IF CHR="%" THEN comment give information about a file;
BEGIN
STRING FN;
UOUTSTR("FILE:");
IF LENGTH(FN←UINCHWL)>0 ∧ PFLDIM(FN)>0 THEN
BEGIN
INTEGER ARRAY HD[0:10];
GETPFD(FN,HD[0]);
OUTSTR(CVS(HD[PCLN])&" LINES x "&CVS(HD[LNBY])&
" BYTES/LINE x "&CVS(HD[BYBI])&" BITS/BYTE"&'15&'12);
END ELSE OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
IF CHR="/" THEN comment input a portion of a file;
BEGIN
STRING FN,INFL; OWN INTEGER LY,LX,HY,HX,XCMP,YCMP,BT;
INTEGER FOO;
IF LENGTH(BACKLOG)=0 THEN
BEGIN
UOUTSTR("FILE:");
IF LENGTH(FN←UINCHWL)>0 ∧ PFLDIM(FN)>0 THEN
BEGIN
INTEGER ARRAY HD[0:10];
GETPFD(FN,HD[0]);
OUTSTR(CVS(HD[PCLN])&" LINES x "&CVS(HD[LNBY])&
" BYTES/LINE x "&CVS(HD[BYBI])&" BITS/BYTE"&'15&'12);
BACKLOG←"/"&FN;
UOUTSTR("LOW Y, LOW X (IN PIXELS):"); INFL←UINCHWL;
LY←INTSCAN(INFL,FOO); LX←INTSCAN(INFL,FOO);
LY←(LY MAX 0) MIN (HD[PCLN]-1); LX←(LX MAX 0) MIN (HD[LNBY]-1);
UOUTSTR("LINEAR COMPRESSION FACTORS (Y, X):"); INFL←UINCHWL;
XCMP←INTSCAN(INFL,FOO);
YCMP←INTSCAN(INFL,FOO);
XCMP←XCMP MAX 1;
IF YCMP≤0 THEN YCMP←XCMP;
UOUTSTR("HEIGHT, WIDTH AND BITS/PIXEL OF RESULT:"); INFL←UINCHWL;
HY←INTSCAN(INFL,FOO); HX←INTSCAN(INFL,FOO);
IF HY=0 THEN HY←256; IF HX=0 THEN HX←256;
HY←(HY MAX 1) MIN (HD[PCLN]-LY)%YCMP;
HX←(HX MAX 1) MIN (HD[LNBY]-LX)%XCMP;
BT←INTSCAN(INFL,FOO); IF BT=0 THEN BT←HD[BYBI];
BT←(BT MAX 1) MIN 36;
PWANT←PIXDIM(HY,HX,BT);
END ELSE OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
BEGIN
MAKPIX(HY,HX,BT,PIC[0]);
GETPFP(BACKLOG,PIC[0],LY,LX,YCMP,XCMP);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
BACKLOG←"";
INITED←FALSE;
END;
END
ELSE
IF CHR="O" THEN comment output a file;
BEGIN
OWN STRING FN;
PRSFIL("↓↓:↓↓.↓↓[↓↓,↓↓]");
PRSFIL(FN);
UOUTSTR("FILE:");
IF LENGTH(FN←UINCHWL)≠0 THEN
BEGIN
PUTPFL(PIC[0],FN);
FN←DEVPRS&":"&FILPRS; OUTSTR("wrote "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
IF CHR="D"∨CHR="∂" THEN comment video synthesizer display;
BEGIN
INTEGER I,J;
REAL SX,SY,ASP,ASPEN;
REAL PX,PY; INTEGER MODP;
SYNLAS←TRUE;
MODP←SYPOS MOD (SDISWID*SDISHIG);
PX←MODP MOD SDISWID;
MODP←MODP%SDISWID;
PY←SDISHIG-MODP-1;
PX←2*PX-SDISWID+1;
PY←2*PY-SDISHIG+1;
SX←1; SY←1; ASPEN←SASPECT*SDISWID/SDISHIG;
ASP←PIC[PCLN]/PIC[LNBY];
IF ASP>ASPEN THEN SX←ASPEN/ASP ELSE SY←ASP/ASPEN;
SX←SX*SSIZE; SY←SY*SSIZE;
SETFORMAT(0,2);
SCREEN(-SDISWID,-SDISHIG,SDISWID,SDISHIG);
MAPGRY(MAPTF,MAPBT); GRAY(PIC[0]);
I←PIC[BYBI];
IF SYNMAP(I)>0 ∨ SDISHIG*SDISWID>1 THEN
BEGIN
IF SDISHIG*SDISWID>1 THEN GETDDF("DSK:DD"&CVS(I)&".TMP[TMP,HPM]");
DRKEN; RECTAN(PX-1,PY-1,PX+1,PY+1);
VID(LXB←PX-SX,LYB←PY-SY,UXB←PX+SX,UYB←PY+SY,PIC[0],1);
IF CHR="∂" THEN
BEGIN
INTEGER I;
LITEN;
FOR I←0 STEP 1 UNTIL 4 DO
BEGIN
LINE(LXB+(UXB-LXB)*I/4,LYB,LXB+(UXB-LXB)*I/4,UYB);
LINE(LXB,LYB+(UYB-LYB)*I/4,UXB,LYB+(UYB-LYB)*I/4);
END;
END;
IF SYNMAP(I)>0 THEN
BEGIN
ERASE(SYNMAP(I));
FOR J←1,1,1 DO DPYUP(SYNMAP(I));
END;
IF SDISHIG*SDISWID>1 THEN PUTDDF("DSK:DD"&CVS(I)&".TMP[TMP,HPM]");
END;
FOR I←PIC[BYBI]-1 STEP -1 UNTIL 0 DO
IF SYNMAP(I)>0 ∨ SDISHIG*SDISWID>1 THEN
BEGIN
IF SDISHIG*SDISWID>1 THEN GETDDF("DSK:DD"&CVS(I)&".TMP[TMP,HPM]");
DRKEN; RECTAN(PX-1,PY-1,PX+1,PY+1);
VID(LXB←PX-SX,LYB←PY-SY,UXB←PX+SX,UYB←PY+SY,
PIC[0],1 LSH (PIC[BYBI]-1-I));
IF CHR="∂" THEN
BEGIN
INTEGER I;
LITEN;
FOR I←0 STEP 1 UNTIL 4 DO
BEGIN
LINE(LXB+(UXB-LXB)*I/4,LYB,LXB+(UXB-LXB)*I/4,UYB);
LINE(LXB,LYB+(UYB-LYB)*I/4,UXB,LYB+(UYB-LYB)*I/4);
END;
END;
IF SYNMAP(I)>0 THEN
BEGIN
ERASE(SYNMAP(I));
FOR J←1,1,1 DO DPYUP(SYNMAP(I));
END;
IF SDISHIG*SDISWID>1 THEN PUTDDF("DSK:DD"&CVS(I)&".TMP[TMP,HPM]");
END;
UNGRAY(PIC[0]);
HAFTONE←TRUE;
SYPOS←SYPOS+1;
OUTSTR("*");
SHOW('47);
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
SHOW(-1);
END
ELSE
IF CHR="∃" THEN comment quick and dirty video synthesizer display;
BEGIN
INTEGER I,J;
SYNLAS←TRUE;
SETFORMAT(0,2);
SCREEN(-SDISWID,-SDISHIG,SDISWID,SDISHIG);
MAPGRY(MAPTF,PIC[BYBI]); GRAY(PIC[0]);
FOR I←PIC[BYBI]-1 STEP -1 UNTIL 0 DO
IF SYNMAP(I)>0 THEN
BEGIN
DRKEN; RECTAN(-100,-100,100,100);
VIDONE(PIC[0],1 LSH (PIC[BYBI]-1-I),
(481-(PIC[PCLN] MIN 481))%2,
(512-(PIC[LNBY] MIN 512))%2);
IF SYNMAP(I)>0 THEN
BEGIN
ERASE(SYNMAP(I));
DPYUP(SYNMAP(I));
END;
END;
UNGRAY(PIC[0]);
HAFTONE←TRUE;
OUTSTR("*");
SHOW('47);
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
SHOW(-1);
END
ELSE
IF CHR="H" THEN comment high quality halftone;
BEGIN
INTEGER J,CHN;
REAL SX,SY,ASP,ASPEN;
REAL PX,PY; INTEGER MODP;
SYNLAS←FALSE;
MODP←HAPOS MOD (HDISWID*HDISHIG);
PX←MODP MOD HDISWID;
MODP←MODP%HDISWID;
PY←HDISHIG-MODP-1;
PX←2*PX-HDISWID+1;
PY←2*PY-HDISHIG+1;
SX←1; SY←1; ASPEN←HASPECT*HDISWID/HDISHIG;
ASP←PIC[PCLN]/PIC[LNBY];
IF ASP>ASPEN THEN SX←ASPEN/ASP ELSE SY←ASP/ASPEN;
SX←SX*HSIZE; SY←SY*HSIZE;
SCREEN(-HDISWID,-HDISHIG,HDISWID,HDISHIG);
IF HDISHIG*HDISWID>1 THEN GETDDF("DSK:DD.TMP[TMP,HPM]");
DRKEN; RECTAN(PX-1,PY-1,PX+1,PY+1);
VIDEO(LXB←PX-SX,LYB←PY-SY,UXB←PX+SX,UYB←PY+SY,PIC[0],-2);
CHN←GDDCHN(-1);
ERASE(CHN);
FOR J←1,1,1,1,1,1 DO DPYUP(CHN);
OUTSTR(" CHANNEL "&CVOS(CHN)&'15&'12);
SHOW(CHN);
HAFTONE←TRUE;
IF HDISHIG*HDISWID>1 THEN PUTDDF("DSK:DD.TMP[TMP,HPM]");
HAPOS←HAPOS+1;
OUTSTR("*");
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
SHOW(-1);
RDDCHN(CHN);
END
ELSE
IF CHR="R" THEN comment random halftone;
BEGIN
INTEGER J,CHN;
REAL SX,SY,ASP,ASPEN;
REAL PX,PY; INTEGER MODP;
SYNLAS←FALSE;
MODP←HAPOS MOD (HDISWID*HDISHIG);
PX←MODP MOD HDISWID;
MODP←MODP%HDISWID;
PY←HDISHIG-MODP-1;
PX←2*PX-HDISWID+1;
PY←2*PY-HDISHIG+1;
SX←1; SY←1; ASPEN←HASPECT*HDISWID/HDISHIG;
ASP←PIC[PCLN]/PIC[LNBY];
IF ASP>ASPEN THEN SX←ASPEN/ASP ELSE SY←ASP/ASPEN;
SX←SX*HSIZE; SY←SY*HSIZE;
SCREEN(-HDISWID,-HDISHIG,HDISWID,HDISHIG);
IF HDISHIG*HDISWID>1 THEN GETDDF("DSK:DD.TMP[TMP,HPM]");
DRKEN; RECTAN(PX-1,PY-1,PX+1,PY+1);
VID(LXB←PX-SX,LYB←PY-SY,UXB←PX+SX,UYB←PY+SY,PIC[0],-1);
CHN←GDDCHN(-1);
OUTSTR(" CHANNEL "&CVOS(CHN)&'15&'12);
ERASE(CHN);
FOR J←1,1,1,1,1,1 DO DPYUP(CHN);
SHOW(CHN);
HAFTONE←TRUE;
IF HDISHIG*HDISWID>1 THEN PUTDDF("DSK:DD.TMP[TMP,HPM]");
HAPOS←HAPOS+1;
OUTSTR("*");
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
SHOW(-1);
RDDCHN(CHN);
END
ELSE
IF CHR="A" THEN comment arty bug halftone;
BEGIN
INTEGER J,CHN;
REAL SX,SY,ASP,ASPEN;
REAL PX,PY; INTEGER MODP;
SYNLAS←FALSE;
MODP←HAPOS MOD (HDISWID*HDISHIG);
PX←MODP MOD HDISWID;
MODP←MODP%HDISWID;
PY←HDISHIG-MODP-1;
PX←2*PX-HDISWID+1;
PY←2*PY-HDISHIG+1;
SX←1; SY←1; ASPEN←HASPECT*HDISWID/HDISHIG;
ASP←PIC[PCLN]/PIC[LNBY];
IF ASP>ASPEN THEN SX←ASPEN/ASP ELSE SY←ASP/ASPEN;
SX←SX*HSIZE; SY←SY*HSIZE;
SCREEN(-HDISWID,-HDISHIG,HDISWID,HDISHIG);
IF HDISHIG*HDISWID>1 THEN GETDDF("DSK:DD.TMP[TMP,HPM]");
DRKEN; RECTAN(PX-1,PY-1,PX+1,PY+1);
VIDEO(LXB←PX-SX,LYB←PY-SY,UXB←PX+SX,UYB←PY+SY,PIC[0],-4);
CHN←GDDCHN(-1);
ERASE(CHN);
FOR J←1,1,1,1,1,1 DO DPYUP(CHN);
OUTSTR(" CHANNEL "&CVOS(CHN)&'15&'12);
SHOW(CHN);
HAFTONE←TRUE;
IF HDISHIG*HDISWID>1 THEN PUTDDF("DSK:DD.TMP[TMP,HPM]");
HAPOS←HAPOS+1;
OUTSTR("*");
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
SHOW(-1);
RDDCHN(CHN);
END
ELSE
IF CHR="X" THEN comment send previous halftone to the XGP;
BEGIN
INTEGER J;
UOUTSTR("SIZE (-5 to +5):");
J←CVD(UINCHWL);
IF J≠0 THEN
BEGIN
IF HAFTONE THEN BEGIN INVEN; RECTAN(-1000,-1000,1000,1000); END;
XGPUP(J);
IF HAFTONE THEN BEGIN INVEN; RECTAN(-1000,-1000,1000,1000); END;
END
ELSE
OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
IF CHR=">" THEN comment make a DD buffer into an MIT transferrable file;
BEGIN
OWN STRING FN;
PRSFIL("↓↓:↓↓.↓↓[↓↓,↓↓]");
PRSFIL("DSK:.SU");
PRSFIL(FN);
UOUTSTR("OUTPUT FILE NAME:");
IF ¬PUTMIT(UINCHWL) THEN OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12)
ELSE
BEGIN
FN←DEVPRS&":"&FILPRS; OUTSTR("wrote "&DEVPRS&":"&FILPRS&'15&'12);
END;
END
ELSE
IF CHR="<" THEN comment display MIT transferrable file;
BEGIN
OWN STRING FN;
INTEGER J,CHN;
PRSFIL("↓↓:↓↓.↓↓[↓↓,↓↓]");
PRSFIL("DSK:.MIT");
PRSFIL(FN);
UOUTSTR("INPUT FILE NAME:");
DRKEN; RECTAN(-100,-100,100,100);
IF ¬GETMIT(UINCHWL) THEN OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12)
ELSE
BEGIN
CHN←GDDCHN(-1);
OUTSTR(" CHANNEL "&CVOS(CHN)&'15&'12);
ERASE(CHN);
FOR J←1,1,1,1,1 DO DPYUP(CHN);
SHOW(CHN);
OUTSTR("*");
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
RDDCHN(CHN);
SHOW(-1);
FN←DEVPRS&":"&FILPRS;
END;
END
ELSE
IF CHR="#" THEN comment switch a video switch output;
BEGIN
INTEGER J,K;
UOUTSTR(" LINE:"); J←CVO(UINCHWL);
UOUTSTR("CHANNEL:"); K←CVO(UINCHWL);
SHOW(K,J);
END
ELSE
IF CHR="P" THEN comment list a picture on the tty;
BEGIN
INTEGER I,J,K,L,M;
REAL ASP;
INTEGER SX,SY;
ASP←PIC[PCLN]/PIC[LNBY];
SX←TWID; SY←SX*ASP*TASPECT;
IF SY>TLEN THEN BEGIN SX←SX*TLEN/SY; SY←TLEN; END;
BEGIN
REAL PCMAX;
PCMAX←2↑PIC[BYBI]-1;
CALL(0,"RESET");
OUTSTR('15&'12);
FOR J←0 STEP 1 UNTIL SY-1 DO
BEGIN
FOR I←0 STEP 1 UNTIL SX-1 DO
BEGIN
PRELOAD_WITH " ","`",".","-","'","/",":","+","1","[","0",
"X","%","A","Q","M","*";
OWN INTEGER ARRAY GRT[0:16];
IF TBRITE THEN
OUTSTR(GRT[16*PIXEL(PIC[0],PIC[PCLN]*J%SY,PIC[LNBY]*I%SX)/PCMAX])
ELSE
OUTSTR(GRT[16*
(1-PIXEL(PIC[0],PIC[PCLN]*J%SY,PIC[LNBY]*I%SX)/PCMAX)]);
END;
OUTSTR('15&'12);
END;
END;
END
ELSE
IF CHR="α" THEN comment add a letter to a font;
BEGIN
INTEGER LETR; OWN STRING FOFIL;
PRSFIL("↓↓:↓↓.↓↓[↓↓,↓↓]");
PRSFIL(".FNT");
PRSFIL(FOFIL);
UOUTSTR("FONT FILE:"); FOFIL←UINCHWL;
UOUTSTR("LETTER:"); LETR←UINCHWL;
DDFONT(LXB,LYB,UXB,UYB, FOFIL, LETR);
FOFIL←DEVPRS&":"&FILPRS; OUTSTR("wrote "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
IF CHR="π" THEN comment output dd buf to jarvis term.;
begin
if ¬pjup then outstr("failed") else show('41);
end
ELSE
IF CHR="λ" THEN comment make an XGPable file;
BEGIN
INTEGER I,J,K,L,M; REAL D,G,O; STRING S; OWN STRING FN;
PRSFIL("↓↓:↓↓.↓↓[↓↓,↓↓]");
PRSFIL(".TXT");
PRSFIL(FN);
DO
BEGIN
UOUTSTR("XGP OUTPUT FILE NAME:");
PRSFIL(FN←UINCHWL);
M←1;
OPEN(1,DEVPRS,0,0,3,0,0,M);
ENTER(1,FILPRS,M);
END
UNTIL ¬M;
UOUTSTR("DENSITY (0 (normal) to 1):"); D←REALSCAN(S←UINCHWL,M);
O←'77+'40*D; G←(D+1)*'40/2↑PIC[BYBI];
FOR I←0 STEP 1 UNTIL PIC[PCLN]-1 DO
BEGIN
FOR J←0 STEP 1 UNTIL PIC[LNBY]-1 DO
OUT(1,M←O-G*PIXEL(PIC[0],I,J));
OUT(1,'15&'12);
END;
CLOSE(1);
FN←DEVPRS&":"&FILPRS; OUTSTR("wrote "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
IF CHR="C" THEN comment step past a certain number of pictures;
BEGIN
INTEGER T;
UOUTSTR("SKIP HOW MANY (NEGATIVE TO BACKSPACE):");
T←CVD(UINCHWL);
IF SYNLAS THEN SYPOS←SYPOS+T ELSE HAPOS←HAPOS+T;
END
ELSE
IF CHR="K" THEN comment clear the video synthesizer;
BEGIN
INTEGER T;
FOR T←0 STEP 1 UNTIL 7 DO ERASE(SYNMAP(T));
END
ELSE
IF CHR="≡" THEN comment gronk synthesizer intensity table;
BEGIN
STRING SI; INTEGER I;
UOUTSTR("TRANSFER FUNCTION (about -2.0 to 2.0):");
IF ¬MAPGRY(MAPTF←REALSCAN(SI←UINCHWL,I),MAPBT) THEN
OUTSTR("failed"&'15&'12);
END
ELSE
IF CHR="S" THEN comment change size of displays;
BEGIN
STRING INP; INTEGER FOO,INC;
REAL T;
UOUTSTR("FOR SYNTHESIZER, HALFTONES OR PRINTOUT (S, H OR P)?");
INC←UCONV(UINCHWL);
IF INC="S" THEN
BEGIN
INTEGER I;
SYNLAS←TRUE;
SETFORMAT(0,2);
UOUTSTR("PICTURE SIZE (1 IS FULLSIZE, NOW"&CVF(SSIZE)&"):"); INP←UINCHWL;
T←REALSCAN(INP,FOO);
IF T≠0 THEN SSIZE←ABS(T);
UOUTSTR("ASPECT RATIO (HEIGHT/WIDTH OF SCREEN, NOW"&CVF(SASPECT)&"):");
INP←UINCHWL;
T←REALSCAN(INP,FOO);
IF T>0 THEN SASPECT←T;
UOUTSTR("NUMBER OF PICTURES IN X DIRECTION:");
T←ABS(CVD(UINCHWL));
IF T>0∧T≠SDISWID THEN
BEGIN
SDISWID←T;
SYPOS←0;
END;
UOUTSTR("NUMBER OF PICTURES IN Y DIRECTION:");
T←ABS(CVD(UINCHWL));
IF T>0∧T≠SDISHIG THEN
BEGIN
SDISHIG←T;
SYPOS←0;
END;
SCREEN(-1,-1,1,1);
DRKEN; RECTAN(-1000,-1000,1000,1000);
IF SDISHIG*SDISWID>1 THEN
BEGIN
UOUTSTR("ERASE?");
IF UCONV(UINCHWL)="Y" THEN
FOR I←0 STEP 1 UNTIL 7 DO
PUTDDF("DSK:DD"&CVS(I)&".TMP[TMP,HPM]")
ELSE
BEGIN
UOUTSTR("REDRAW OLD DISPLAY NOW?");
IF UCONV(UINCHWL)="Y" THEN
FOR I←7 STEP -1 UNTIL 0 DO
IF SYNMAP(I)≥0 THEN
BEGIN
IF I=0 THEN MAPGRY(MAPTF,MAPBT);
SHOWA('47);
GETDDF("DSK:DD"&CVS(I)&".TMP[TMP,HPM]");
ERASE(SYNMAP(I));
DPYUP(SYNMAP(I)); DPYUP(SYNMAP(I));
DPYUP(SYNMAP(I)); DPYUP(SYNMAP(I));
SHOWA('47);
END;
HAFTONE←TRUE;
OUTSTR("*");
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
END;
END;
END
ELSE IF INC="H" THEN
BEGIN
SYNLAS←FALSE;
SETFORMAT(0,2);
UOUTSTR("PICTURE SIZE (1 IS FULLSIZE, NOW"&CVF(HSIZE)&"):"); INP←UINCHWL;
T←REALSCAN(INP,FOO);
IF T≠0 THEN HSIZE←ABS(T);
UOUTSTR("ASPECT RATIO (HEIGHT/WIDTH OF SCREEN, NOW"&CVF(HASPECT)&"):");
INP←UINCHWL;
T←REALSCAN(INP,FOO);
IF T>0 THEN HASPECT←T;
UOUTSTR("NUMBER OF PICTURES IN X DIRECTION:");
T←ABS(CVD(UINCHWL));
IF T>0∧T≠HDISWID THEN
BEGIN
HDISWID←T;
HAPOS←0;
END;
UOUTSTR("NUMBER OF PICTURES IN Y DIRECTION:");
T←ABS(CVD(UINCHWL));
IF T>0∧T≠HDISHIG THEN
BEGIN
HDISHIG←T;
HAPOS←0;
END;
SCREEN(-1,-1,1,1);
DRKEN; RECTAN(-1000,-1000,1000,1000);
IF HDISHIG*HDISWID>1 THEN PUTDDF("DSK:DD.TMP[TMP,HPM]");
END
ELSE IF INC="P" THEN
BEGIN
SETFORMAT(0,2);
UOUTSTR("ASPECT RATIO OF TTY (CHRS/IN, VERTICAL/HORIZONTAL, NOW "&
CVF(TASPECT)&"):");
INP←UINCHWL;
T←REALSCAN(INP,FOO);
IF T≠0 THEN TASPECT←ABS(T);
UOUTSTR("WIDTH OF TTY DISPLAYS (NOW "&CVS(TWID)&"):");
INP←UINCHWL;
T←REALSCAN(INP,FOO);
IF T≠0 THEN TWID←ABS(T);
UOUTSTR("MAXIMUM HEIGHT OF TTY DISPLAYS (NOW "&CVS(TLEN)&"):");
INP←UINCHWL;
T←REALSCAN(INP,FOO);
IF T≠0 THEN TLEN←ABS(T);
UOUTSTR("ARE LETTERS BRIGHT OR DARK (NOW "&
(IF TBRITE THEN "BRIGHT" ELSE "DARK")&"):");
TBRITE←¬(UCONV(UINCHWL)="D");
END;
END
ELSE
IF CHR="F" THEN comment high pass filter;
BEGIN
INTEGER WINDOW;
UOUTSTR(" WINDOW SIZE:");
WINDOW←CVD(UINCHWL);
IF WINDOW>1 THEN
BEGIN
INTEGER ARRAY T[0:PHAVE];
PASSHI(PIC[0],WINDOW,T[0]);
ENHANCE(T[0]);
COPPIC(T[0],PIC[0]);
END
ELSE OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
IF CHR="&" THEN comment measure noise;
BEGIN
OUTSTR(" NOISE FIGURE:"&CVF(NOISE(PIC[0]))&'15&'12);
END
ELSE
IF CHR="L" THEN comment low pass filter;
BEGIN
INTEGER ARRAY T[0:PHAVE];
IF PIC[PCLN]≥2∧PIC[LNBY]≥2 THEN
BEGIN
HAFPIC(PIC[0],T[0],8);
COPPIC(T[0],PIC[0]);
END;
PWANT←PHAVE←PIXDIM(PIC[PCLN],PIC[LNBY],PIC[BYBI]);
INITED←FALSE;
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
END
ELSE
IF CHR="W" THEN comment select a window;
BEGIN
INTEGER XL,XH,YL,YH,FOO; REAL A,B;
STRING INFL;
UOUTSTR("LOW X, HIGH X (PIXELS OR FRACTION):"); INFL←UINCHWL;
XL←A←REALSCAN(INFL,FOO);
XH←B←REALSCAN(INFL,FOO);
IF ABS(A)≤1 ∧ ABS(B)≤1 THEN
BEGIN
XL←A*PIC[LNBY];
XH←B*PIC[LNBY];
END;
IF XL>XH THEN XL↔XH;
XL←XL MAX 0; XH←XH MIN (PIC[LNBY]-1);
IF (XH-XL+1)>0 THEN
BEGIN
UOUTSTR("LOW Y, HIGH Y:"); INFL←UINCHWL;
YL←A←REALSCAN(INFL,FOO);
YH←B←REALSCAN(INFL,FOO);
IF ABS(A)≤1 ∧ ABS(B)≤1 THEN
BEGIN
YL←A*PIC[PCLN];
YH←B*PIC[PCLN];
END;
IF YL>YH THEN YL↔YH;
YL←YL MAX 0; YH←YH MIN (PIC[PCLN]-1);
IF (YH-YL+1)>0 THEN
BEGIN
INTEGER ARRAY T[0:PIXDIM(YH-YL+1,XH-XL+1,PIC[BYBI])];
MAKPIX(YH-YL+1,XH-XL+1,PIC[BYBI],T[0]);
SELECT(PIC[0],YL,XL,T[0]);
COPPIC(T[0],PIC[0]);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
PWANT←PHAVE←PIXDIM(PIC[PCLN],PIC[LNBY],PIC[BYBI]);
INITED←FALSE;
END;
END;
END
ELSE
IF CHR="Z" THEN comment change size of a picture;
BEGIN
OWN INTEGER LHIG,LWID,LBITS;
INTEGER FOO;
STRING INFL;
IF LENGTH(BACKLOG)=0 THEN
BEGIN
UOUTSTR("DILATION FACTORS (EG. .5 = HALF SIZE) Y, X:"); INFL←UINCHWL;
LHIG←ABS(REALSCAN(INFL,FOO))*PIC[PCLN]; IF LHIG=0 THEN LHIG←PIC[PCLN];
LWID←ABS(REALSCAN(INFL,FOO))*PIC[LNBY]; IF LWID=0 THEN LWID←PIC[LNBY];
UOUTSTR("NUMBER OF BITS:"); LBITS←(CVD(UINCHWL) MIN 36);
IF LBITS≤0 THEN LBITS←PIC[BYBI];
IF LBITS≠PIC[BYBI]∨LWID≠PIC[LNBY]∨LHIG≠PIC[PCLN] THEN
BEGIN
PUTPFL(PIC[0],"DSK:TMP.TMP[TMP,HPM]");
PWANT←PIXDIM(LHIG,LWID,LBITS);
BACKLOG←"Z ";
END;
END
ELSE
BEGIN
INTEGER ARRAY T[0:PFLDIM("TMP.TMP[TMP,HPM]")];
GETPFL("DSK:TMP.TMP[TMP,HPM]",T[0]);
MAKPIX(LHIG,LWID,LBITS,PIC[0]);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
SHRINK(T[0],PIC[0]);
BACKLOG←"";
INITED←FALSE;
END;
END
ELSE
IF CHR="ε" THEN comment make DD buffer into a picture;
BEGIN
OWN INTEGER LHIG,LWID,LBITS;
IF LENGTH(BACKLOG)=0 THEN
BEGIN
LHIG←481; LWID←512; LBITS←1;
PWANT←PIXDIM(HIG,WID,BITS);
BACKLOG←"ε ";
END
ELSE
BEGIN
INTEGER I;
MAKPIX(LHIG,LWID,LBITS,PIC[0]);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
FOR I ← 0 STEP 1 UNTIL 480 DO
DDPAK(I,MEMORY[PIC[LINTAB+I]],0,511);
BACKLOG←"";
INITED←FALSE;
END;
END
ELSE
IF CHR="*" THEN comment general geometric transformation;
BEGIN
OWN INTEGER HIG,WID,BITS;
INTEGER FOO;
STRING INFL;
own string tr1,tr2,tr3;
IF LENGTH(BACKLOG)=0 THEN
BEGIN
integer com;
UOUTSTR("Transform (? for help):"); com←UINCHRW;
WHILE com="?" DO
BEGIN
Uoutstr("
R Rotate
E Enter transform matrix
Transform:");
com←UINCHRW;
END;
COM←COM LAND '137;
if com="R" then
begin
REAL RT,SRT,CRT;
UOUTSTR("What fraction of a full turn:");
RT←REALSCAN(INFL←UINCHWL,FOO);
SRT←SIN(2*3.14159265*RT); CRT←COS(2*3.14159265*RT);
SETFORMAT(0,4);
TR1←CVF(CRT)&" "&CVF(SRT)&" "&CVF(.5*(1-SRT-CRT));
TR2←CVF(-SRT)&" "&CVF(CRT)&" "&CVF(.5*(1+SRT-CRT));
TR3←"0 0 1";
HIG←PIC[PCLN]*ABS(CRT)+PIC[LNBY]*ABS(SRT);
WID←PIC[LNBY]*ABS(CRT)+PIC[PCLN]*ABS(SRT);
RT←SQRT(PIC[PCLN]*PIC[LNBY]/(HIG*WID));
HIG←HIG*RT+.5;
WID←WID*RT+.5;
BITS←PIC[BYBI];
PUTPFL(PIC[0],"DSK:TMP.TMP[TMP,HPM]");
end
else if com="E" then
begin
Uoutstr("Enter transform matrix."&'15&'12);
Uoutstr("tr[1,1:3] ← ");loded(tr1&'12);tr1←UINCHWL;
Uoutstr("tr[2,1:3] ← ");loded(tr2&'12);tr2←UINCHWL;
Uoutstr("tr[3,1:3] ← ");loded(tr3&'12);tr3←UINCHWL;
Uoutstr("height width bits ← ");
loded(cvs(pic[pcln])&" "&cvs(pic[lnby])
&" "&cvs( pic[bybi] ) & '12); infl ← UINCHWL;
hig←intscan(infl,foo);
wid←intscan(infl,foo);
bits←intscan(infl,foo);
PUTPFL(PIC[0],"DSK:TMP.TMP[TMP,HPM]");
end;
PWANT←PIXDIM(HIG,WID,BITS);
BACKLOG←"* ";
END
ELSE
BEGIN
INTEGER ARRAY T[0:PFLDIM("DSK:TMP.TMP[TMP,HPM]")];
real array tr[1:3,1:3];
GETPFL("DSK:TMP.TMP[TMP,HPM]",T[0]);
MAKPIX(HIG,WID,BITS,PIC[0]);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
infl←tr1;tr[1,1]←realscan(infl,foo);tr[1,2]←realscan(infl,foo);tr[1,3]←realscan(infl,foo);
infl←tr2;tr[2,1]←realscan(infl,foo);tr[2,2]←realscan(infl,foo);tr[2,3]←realscan(infl,foo);
infl←tr3;tr[3,1]←realscan(infl,foo);tr[3,2]←realscan(infl,foo);tr[3,3]←realscan(infl,foo);
pixtrn(t[0],tr,pic[0]);
BACKLOG←"";
INITED←FALSE;
END;
END
ELSE
IF CHR="U" THEN comment remove blank border from a picture;
BEGIN
INTEGER ARRAY ROW[0:PIC[PCLN]-1],COL[0:PIC[LNBY]-1];
INTEGER FHX,FHY,I,K,FLX,FLY;
ROWSUM(PIC[0],ROW[0]);
K←0; FOR I←0 STEP 1 UNTIL PIC[PCLN]-1 DO K←K+ROW[I];
K←K/PIC[PCLN]; FLY←0; WHILE ROW[FLY]<K/2 DO FLY←FLY+1;
FHY←PIC[PCLN]-1; WHILE ROW[FHY]<K/2 DO FHY←FHY-1;
IF ROW[FLY]<K/1.5 THEN FLY←FLY+1;
IF ROW[FLY]<K/1.5 THEN FLY←FLY+1;
COLSUM(PIC[0],COL[0]);
K←0; FOR I←0 STEP 1 UNTIL PIC[LNBY]-1 DO K←K+COL[I];
K←K/PIC[LNBY]; FLX←0; WHILE COL[FLX]<K/2 DO FLX←FLX+1;
FHX←PIC[LNBY]-1; WHILE COL[FHX]<K/2 DO FHX←FHX-1;
WID←FHX-FLX+1; HIG←FHY-FLY+1;
IF BITS≠PIC[BYBI]∨WID≠PIC[LNBY]∨HIG≠PIC[PCLN] THEN
BEGIN
INTEGER ARRAY T[0:PHAVE];
COPPIC(PIC[0],T[0]);
MAKPIX(HIG,WID,BITS,PIC[0]);
SELECT(T[0],FLY,FLX,PIC[0]);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
PHAVE←PWANT←PIXDIM(HIG,WID,BITS);
INITED←FALSE;
END;
END
ELSE
IF CHR="N" THEN comment apply noise remover;
BEGIN
CLEAN(PIC[0]);
END
ELSE
IF CHR="V" THEN comment apply interest operator;
BEGIN
INTEGER WINDOW;
UOUTSTR(" WINDOW SIZE:"); WINDOW←CVD(UINCHWL);
IF WINDOW≥1 THEN
BEGIN
INTEREST(PIC[0],WINDOW,PIC[0]);
OUTSTR(CVS(PIC[PCLN])&" LINES x "&CVS(PIC[LNBY])&
" BYTES/LINE x "&CVS(PIC[BYBI])&" BITS/BYTE"&'15&'12);
PWANT←PHAVE←PIXDIM(PIC[PCLN],PIC[LNBY],PIC[BYBI]);
INITED←FALSE;
END
ELSE OUTSTR("aborted "&DEVPRS&":"&FILPRS&'15&'12);
END
ELSE
IF CHR="M" THEN comment pixel modification;
BEGIN
PRELOAD_WITH -1;
OWN INTEGER ARRAY PERM[-1:1024];
STRING INP; INTEGER FOO,I,J;
INTEGER LAST,THIS;
IF PERM[-1]=PIC[BYBI] THEN
BEGIN
UOUTSTR(" ENTER NEW TRANSFORM?");
INP←UCONV(UINCHRW);
END ELSE INP←"Y";
IF INP="Y" THEN
BEGIN
PERM[-1]←PIC[BYBI];
UOUTSTR(CVS(2↑PIC[BYBI])&" TOTAL GREY LEVELS, ENTER HOW MANY:");
FOO←(CVD(UINCHWL) MAX 2) MIN 2↑PIC[BYBI];
LAST←0;
FOR I←0 STEP 1 UNTIL FOO-1 DO
BEGIN
THIS←((1 ASH PIC[BYBI])-1)*I%(FOO-1);
UOUTSTR(CVS(THIS)&"→");
PERM[THIS]←CVD(UINCHWL);
IF THIS>LAST THEN
FOR J←LAST STEP 1 UNTIL THIS DO
PERM[J]←(PERM[LAST]*(THIS-J)+PERM[THIS]*(J-LAST))%(THIS-LAST);
LAST←THIS;
END;
FOR I←0 STEP 1 UNTIL 2↑PIC[BYBI]-1 DO
PERM[I]←(PERM[I] MAX 0) MIN (2↑PIC[BYBI]-1);
END;
PERBIT(PIC[0],PERM[0]);
END
ELSE
IF CHR="G" THEN comment graph a histogram;
BEGIN
INTEGER ARRAY HIST[0:PIC[BMAX]+1];
INTEGER FOO,I,J,MAV,CHN;
CHN←GDDCHN(-1);
OUTSTR(" CHANNEL "&CVOS(CHN)&'15&'12);
FOO←2↑PIC[BYBI]-1;
HISTOG(PIC[0],HIST[0]);
SCREEN(-.3,-.2,1.1,1.2);
DRKEN; RECTAN(-100,-100,100,100);
LITEN;
LINE(0,0,0,1); LINE(0,1,1,1);
LINE(1,1,1,0); LINE(1,0,0,0);
LINE(0,.5,1,.5); LINE(0,.25,1,.25); LINE(0,.75,1,.75);
LINE(.5,0,.5,1); LINE(.25,0,.25,1); LINE(.75,0,.75,1);
MAV←0; FOR I←0 STEP 1 UNTIL FOO DO MAV←MAV MAX HIST[I];
MAV←MAV+1;
FOR I←1 STEP 1 UNTIL FOO DO
LINE((I-1)/FOO,HIST[I-1]/MAV,I/FOO,HIST[I]/MAV);
TXTPOS(0,-1/10,1/24,1/12); TEXT("0");
TXTPOS(1-LENGTH(CVS(2↑PIC[BYBI]))/24,-1/10,1/24,1/12);
TEXT(CVS(2↑PIC[BYBI]-1));
TXTPOS(-.07,0,1/24,1/12); TEXT("0");
TXTPOS(-.07-(LENGTH(CVS(MAV))-1)/24,1-1/12,1/24,1/12); TEXT(CVS(MAV));
ERASE(CHN);
FOR J←1,1,1,1,1 DO DPYUP(CHN);
HAFTONE←FALSE; LXB←LYB←-1; UXB←UYB←1;
SHOW(CHN);
OUTSTR("*");
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
RDDCHN(CHN);
SHOW(-1);
END
ELSE
IF CHR="J" THEN comment graph a histogram;
BEGIN
INTEGER ARRAY HIST[0:PIC[BMAX]+1];
INTEGER FOO,I,J,L,MAV,CHN;
CHN←GDDCHN(-1);
OUTSTR(" CHANNEL "&CVOS(CHN)&'15&'12);
FOO←2↑PIC[BYBI]-1;
HISTOG(PIC[0],HIST[0]);
SCREEN(-.3,-.2,1.1,1.2);
DRKEN; RECTAN(-100,-1000,1000,1000);
LITEN;
LINE(0,0,0,1); LINE(0,1,1,1);
LINE(1,1,1,0); LINE(1,0,0,0);
LINE(0,.5,1,.5); LINE(0,.25,1,.25); LINE(0,.75,1,.75);
LINE(.5,0,.5,1); LINE(.25,0,.25,1); LINE(.75,0,.75,1);
MAV←0; FOR I←0 STEP 1 UNTIL FOO DO MAV←MAV + HIST[I];
L←J←0;
FOR I←1 STEP 1 UNTIL FOO DO
BEGIN
L←J;
J←J+HIST[I];
LINE((I-1)/FOO,L/MAV,I/FOO,J/MAV);
END;
TXTPOS(0,-1/10,1/24,1/12); TEXT("0");
TXTPOS(1-LENGTH(CVS(2↑PIC[BYBI]))/24,-1/10,1/24,1/12);
TEXT(CVS(2↑PIC[BYBI]-1));
TXTPOS(-.07,0,1/24,1/12); TEXT("0");
TXTPOS(-.07-(LENGTH(CVS(MAV))-1)/24,1-1/12,1/24,1/12); TEXT(CVS(MAV));
ERASE(CHN);
FOR J←1,1,1,1,1 DO DPYUP(CHN);
SHOW(CHN);
HAFTONE←FALSE; LXB←LYB←-1; UXB←UYB←1;
OUTSTR("*");
DO BACKLOG←UINCHRW UNTIL BACKLOG≠'15∧BACKLOG≠'12;
RDDCHN(CHN);
SHOW(-1);
END
ELSE
IF CHR="E" THEN comment apply histogram normalizer;
BEGIN
ENHANCE(PIC[0]);
END
ELSE
IF CHR="Y" THEN comment apply vert sync loss correction;
BEGIN
SYNCHRONIZE(PIC[0]);
END
ELSE
IF CHR="∞" THEN comment for hackery;
BEGIN
END
ELSE
IF CHR="Q" THEN comment exit;
BEGIN
if outddcalled then OUTDD('40&'15&'12);
CALL(0,"EXIT");
END
ELSE
BEGIN comment an unrecognized character;
OUTSTR("?"&'15&'12);
END;
END;
PHAVE←PWANT;
END;
END "PIX";