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C*PGDRIV -- PGPLOT metafile driver
C+
SUBROUTINE PGDRIV (IFUNC, RBUF, NBUF, CHR, LCHR)
INTEGER IFUNC, NBUF, LCHR
REAL RBUF(*)
CHARACTER*(*) CHR
C
C PGPLOT driver for PGPLOT metafile (private format).
C
C-----------------------------------------------------------------------
INTEGER DWD, DHT, DRES
CHARACTER*(*) TYPE, DEFNAM
PARAMETER (TYPE= 'PGMF (PGPLOT metafile)')
PARAMETER (DEFNAM='pgplot.pgmf')
PARAMETER (DWD=6400, DHT=4800, DRES=1000)
C
INTEGER WIDTH, HEIGHT
SAVE WIDTH, HEIGHT
INTEGER NSYM, MFAC
INTEGER IER, I0, J0, I1, J1, L, LL, LASTI, LASTJ, UNIT, I
SAVE LASTI, LASTJ, UNIT
INTEGER CI, LW, LS, NPTS, NPAGE, IOERR, LFNAME
SAVE LW, LS, NPTS, NPAGE, IOERR, LFNAME
INTEGER STATE, INPIC
SAVE STATE, INPIC
INTEGER GROPTX, GRCTOI
LOGICAL STDOUT
SAVE STDOUT
INTEGER RVALUE(0:255), GVALUE(0:255), BVALUE(0:255)
SAVE RVALUE, GVALUE, BVALUE
INTEGER OP(0:255)
SAVE OP
CHARACTER*120 INSTR, MSG
CHARACTER*255 FNAME
SAVE FNAME
REAL RINIT(0:15), GINIT(0:15), BINIT(0:15)
SAVE RINIT, GINIT, BINIT
DATA RINIT
1 / 1.00, 0.00, 1.00, 0.00, 0.00, 0.00, 1.00, 1.00,
2 1.00, 0.50, 0.00, 0.00, 0.50, 1.00, 0.33, 0.67/
DATA GINIT
1 / 1.00, 0.00, 0.00, 1.00, 0.00, 1.00, 0.00, 1.00,
2 0.50, 1.00, 1.00, 0.50, 0.00, 0.00, 0.33, 0.67/
DATA BINIT
1 / 1.00, 0.00, 0.00, 0.00, 1.00, 1.00, 1.00, 0.00,
2 0.00, 0.00, 0.50, 1.00, 1.00, 0.50, 0.33, 0.67/
DATA STATE/0/
C-----------------------------------------------------------------------
C
GOTO( 10, 20, 30, 40, 50, 60, 70, 80, 90,100,
1 110,120,130,140,150,160,900,180,900,200,
2 210,220,230,240,900,260,900,280,290), IFUNC
GOTO 900
C
C--- IFUNC = 1, Return device name.-------------------------------------
C
10 CHR = TYPE
LCHR = LEN(TYPE)
RETURN
C
C--- IFUNC = 2, Return physical min and max for plot device, and range
C of color indices.---------------------------------------
C
20 RBUF(1) = 0
RBUF(2) = -1
RBUF(3) = 0
RBUF(4) = -1
RBUF(5) = 0
RBUF(6) = 255
NBUF = 6
RETURN
C
C--- IFUNC = 3, Return device resolution. ------------------------------
C
30 RBUF(1) = REAL(DRES)
RBUF(2) = REAL(DRES)
RBUF(3) = 5
NBUF = 3
RETURN
C
C--- IFUNC = 4, Return misc device info. -------------------------------
C
40 CONTINUE
CHR = 'HNNATRQNYM'
LCHR = 10
RETURN
C
C--- IFUNC = 5, Return default file name. ------------------------------
C
50 CHR = DEFNAM
LCHR = LEN(DEFNAM)
RETURN
C
C--- IFUNC = 6, Return default physical size of plot. ------------------
C
60 RBUF(1) = 0
RBUF(3) = 0
RBUF(2) = WIDTH
RBUF(4) = HEIGHT
NBUF = 4
RETURN
C
C--- IFUNC = 7, Return misc defaults. ----------------------------------
C
70 RBUF(1) = 8
NBUF = 1
RETURN
C
C--- IFUNC = 8, Select plot. -------------------------------------------
C
80 CONTINUE
RETURN
C
C--- IFUNC = 9, Open workstation. --------------------------------------
C
90 CONTINUE
C -- check for concurrent access
IF (STATE.EQ.1) THEN
CALL GRWARN('a PGPLOT metafile is already open')
RBUF(1) = 0
RBUF(2) = 0
RETURN
END IF
DO 91 CI=0,15
RVALUE(CI) = NINT(255*RINIT(CI))
GVALUE(CI) = NINT(255*GINIT(CI))
BVALUE(CI) = NINT(255*BINIT(CI))
91 CONTINUE
DO 93 CI=16,255
RVALUE(CI) = 0
GVALUE(CI) = 0
BVALUE(CI) = 0
93 CONTINUE
C -- Device dimensions
WIDTH = DWD
HEIGHT = DHT
CALL GRGENV('PGMF_WIDTH', INSTR, L)
LL = 1
IF (L.GT.0) WIDTH = GRCTOI(INSTR(:L),LL)
CALL GRGENV('PGMF_HEIGHT', INSTR, L)
LL = 1
IF (L.GT.0) HEIGHT = GRCTOI(INSTR(:L),LL)
STDOUT =CHR(1:LCHR).EQ.'-'
IF (STDOUT) THEN
UNIT = 6
C -- machine-dependent!
ELSE
CALL GRGLUN(UNIT)
END IF
NBUF = 2
RBUF(1) = UNIT
IF (.NOT.STDOUT) THEN
IER = GROPTX(UNIT, CHR(1:LCHR), DEFNAM, 1)
IF (IER.NE.0) THEN
MSG = 'Cannot open output file for PGPLOT metafile: '//
1 CHR(:LCHR)
CALL GRWARN(MSG)
RBUF(2) = 0
CALL GRFLUN(UNIT)
RETURN
ELSE
INQUIRE (UNIT=UNIT, NAME=CHR)
LCHR = LEN(CHR)
94 IF (CHR(LCHR:LCHR).EQ.' ') THEN
LCHR = LCHR-1
GOTO 94
END IF
RBUF(2) = 1
FNAME = CHR(:LCHR)
LFNAME = LCHR
END IF
ELSE
RBUF(2) = 1
FNAME = '-'
LFNAME= 1
END IF
STATE = 1
IOERR = 0
LASTI = -1
LASTJ = -1
LW = 1
LS = 1
NPTS = 0
INPIC = 0
NPAGE = 0
CALL GRPG02(IOERR, UNIT, '%PGMF (PGPLOT metafile)')
CALL GRUSER(INSTR, L)
IF (L.GT.0) CALL GRPG02(IOERR, UNIT, '% Creator: '//INSTR(1:L))
CALL GRDATE(INSTR, L)
IF (L.GT.0) CALL GRPS02(IOERR, UNIT, '% Date: '//INSTR(1:L))
RETURN
C
C--- IFUNC=10, Close workstation. --------------------------------------
C
100 CONTINUE
IF (.NOT.STDOUT) THEN
CLOSE (UNIT, IOSTAT=IOERR)
IF (IOERR.NE.0) THEN
CALL GRWARN('Error closing PGPLOT metafile '//FNAME(:LFNAME))
END IF
CALL GRFLUN(UNIT)
END IF
STATE = 0
RETURN
C
C--- IFUNC=11, Begin picture. ------------------------------------------
C
110 CONTINUE
WIDTH = RBUF(1)
HEIGHT = RBUF(2)
NPAGE = NPAGE+1
INPIC = 1
CALL GRFAO('B# # # #', L, INSTR, NPAGE, WIDTH, HEIGHT, DRES)
CALL GRPG02(IOERR, UNIT, INSTR(:L))
DO 111 I=0,255
OP(I) = 0
111 CONTINUE
CALL GRFAO('C# # # #', L, INSTR, 0, RVALUE(0), GVALUE(0),
: BVALUE(0))
CALL GRPG02(IOERR, UNIT, INSTR(1:L))
OP(0) = 1
RETURN
C
C--- IFUNC=12, Draw line. ----------------------------------------------
C
120 CONTINUE
I0 = NINT(RBUF(1))
J0 = NINT(RBUF(2))
I1 = NINT(RBUF(3))
J1 = NINT(RBUF(4))
IF (I0.EQ.LASTI .AND. J0.EQ.LASTJ) THEN
C -- suppress zero-length continuation segment
IF (I0.EQ.I1 .AND. J0.EQ.J1) RETURN
CALL GRFAO('L# #', L, INSTR, (I1-I0), (J1-J0), 0, 0)
CALL GRPG02(IOERR, UNIT, INSTR(:L))
ELSE
CALL GRFAO('M# #', L, INSTR, I0, J0, 0, 0)
CALL GRPG02(IOERR, UNIT, INSTR(:L))
CALL GRFAO('L# #', L, INSTR, (I1-I0), (J1-J0), 0, 0)
CALL GRPG02(IOERR, UNIT, INSTR(:L))
END IF
LASTI = I1
LASTJ = J1
RETURN
C
C--- IFUNC=13, Draw dot. -----------------------------------------------
C
130 CONTINUE
I1 = NINT(RBUF(1))
J1 = NINT(RBUF(2))
CALL GRFAO('D# #', L, INSTR, I1, J1, 0, 0)
CALL GRPG02(IOERR, UNIT, INSTR(:L))
LASTI = I1
LASTJ = J1
RETURN
C
C--- IFUNC=14, End picture. --------------------------------------------
C
140 CONTINUE
CALL GRPG02(IOERR, UNIT, 'E')
INPIC = 0
RETURN
C
C--- IFUNC=15, Select color index. -------------------------------------
C
150 CONTINUE
CI = NINT(RBUF(1))
IF (INPIC.EQ.1) THEN
IF (OP(CI).EQ.0) THEN
CALL GRFAO('C# # # #', L, INSTR, CI, RVALUE(CI),
: GVALUE(CI), BVALUE(CI))
CALL GRPG02(IOERR, UNIT, INSTR(1:L))
OP(CI) = 1
END IF
CALL GRFAO('I#', L, INSTR, CI, 0, 0, 0)
CALL GRPG02(IOERR, UNIT, INSTR(:L))
LASTI = -1
END IF
RETURN
C
C--- IFUNC=16, Flush buffer. -------------------------------------------
C
160 CONTINUE
RETURN
C
C--- IFUNC=18, Erase alpha screen. -------------------------------------
C (Null operation: there is no alpha screen.)
C
180 CONTINUE
RETURN
C
C--- IFUNC=20, Polygon fill. -------------------------------------------
C
200 CONTINUE
IF (NPTS.EQ.0) THEN
NPTS = RBUF(1)
CALL GRFAO('Y#', L, INSTR, NPTS, 0, 0, 0)
ELSE
NPTS = NPTS-1
I0 = NINT(RBUF(1))
J0 = NINT(RBUF(2))
CALL GRFAO('X# #', L, INSTR, I0, J0, 0, 0)
END IF
CALL GRPG02(IOERR, UNIT, INSTR(1:L))
LASTI = -1
RETURN
C
C--- IFUNC=21, Set color representation. -------------------------------
C
210 CONTINUE
CI = RBUF(1)
RVALUE(CI) = NINT(255*RBUF(2))
GVALUE(CI) = NINT(255*RBUF(3))
BVALUE(CI) = NINT(255*RBUF(4))
OP(CI) = 0
RETURN
C
C--- IFUNC=22, Set line width. -----------------------------------------
C (Convert requested line width, unit 1/200 inch, to device units)
C
220 CONTINUE
LW = NINT(DRES*RBUF(1)/200.0)
CALL GRFAO('W#', L, INSTR, LW, 0, 0, 0)
CALL GRPG02(IOERR, UNIT, INSTR(1:L))
LASTI = -1
RETURN
C
C--- IFUNC=23, Escape. -------------------------------------------------
C
230 CONTINUE
CALL GRPG02(IOERR, UNIT, CHR(:LCHR))
LASTI = -1
RETURN
C
C--- IFUNC=24, Rectangle fill. -----------------------------------------
C
240 CONTINUE
CALL GRFAO('R# # # #', L, INSTR, NINT(RBUF(1)), NINT(RBUF(2)),
: NINT(RBUF(3)), NINT(RBUF(4)))
CALL GRPG02(IOERR, UNIT, INSTR(1:L))
LASTI = -1
RETURN
C
C--- IFUNC=26, Image.---------------------------------------------------
C
260 CONTINUE
C Not yet implemented
RETURN
C
C--- IFUNC=28, Marker.--------------------------------------------------
C
280 CONTINUE
NSYM = NINT(RBUF(1))
I1 = NINT(RBUF(2))
J1 = NINT(RBUF(3))
MFAC = NINT(1000.0*RBUF(4))
CALL GRFAO('S# # # #', L, INSTR, NSYM, I1, J1, MFAC)
CALL GRPG02(IOERR, UNIT, INSTR(1:L))
LASTI = -1
RETURN
C
C--- IFUNC=29, Query color representation.------------------------------
C
290 CONTINUE
CI = NINT(RBUF(1))
NBUF = 4
RBUF(2) = RVALUE(CI)/255.0
RBUF(3) = GVALUE(CI)/255.0
RBUF(4) = BVALUE(CI)/255.0
RETURN
C
C-----------------------------------------------------------------------
C Error: unimplemented function.
C
900 WRITE (MSG,
1 '(''Unimplemented function in PG device driver: '',I10)') IFUNC
CALL GRWARN(MSG)
NBUF = -1
RETURN
C-----------------------------------------------------------------------
END
C*GRPG02 -- PGPLOT metafile driver, copy buffer to file
C+
SUBROUTINE GRPG02 (IER, UNIT, S)
C
C Support routine for PGdriver: write character string S on
C specified Fortran unit.
C
C Error handling: if IER is not 0 on input, the routine returns
C immediately. Otherwise IER receives the I/O status from the Fortran
C write (0 => success).
C-----------------------------------------------------------------------
INTEGER IER, UNIT
CHARACTER*(*) S
C
IF (IER.EQ.0) THEN
WRITE (UNIT, '(A)', IOSTAT=IER) S
IF (IER.NE.0) CALL
1 GRWARN('++WARNING++ Error writing PGPLOT metafile')
END IF
C-----------------------------------------------------------------------
END
|
