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|
C*CCDRIV -- PGPLOT DEC LJ250 Color Companion driver
C+
SUBROUTINE CCDRIV (IFUNC, RBUF, NBUF, CHR, LCHR)
IMPLICIT NONE
INTEGER IFUNC, NBUF, LCHR
REAL RBUF(*)
CHARACTER*(*) CHR
C
C PGPLOT driver for DEC LJ250 Color Companion device.
C
C Version 1.0 - 1989 Jun 04 - S. C. Allendorf
C=======================================================================
C
C Supported device: DEC LJ250 Color Companion printer.
C
C Device type code: /CCP (portrait) or /CCL (landscape).
C
C Default device name: PGPLOT.CCPLT.
C
C Default view surface dimensions: 8.0 inches by 10.5 inches.
C
C Resolution: 90 dots/inch.
C
C Color capability: Color indices 0-15 are supported. It is not (yet)
C possible to change color representation.
C
C Input capability: None.
C
C File format: DEC color sixel format.
C
C Obtaining hardcopy: Use the VMS PRINT command.
C-----------------------------------------------------------------------
C
C To choose portrait mode, you must execute a DCL command of the
C following form before executing your program:
C
C $ DEFINE PGPLOT_CC_MODE PORTRAIT
C-----------------------------------------------------------------------
CHARACTER*(*) TYPE
PARAMETER (TYPE='CC (DEC LJ250 Color Companion printer)')
BYTE CTAB(3, 256), FF
LOGICAL HIRES, INIT, LANDSCAPE
INTEGER*4 BUFFER, BX, BY, I, IC, IER, GRFMEM, GRGMEM
INTEGER*4 LUN, MAXCOL, NPICT
REAL*4 XBUF(4)
CHARACTER DEFNAM*12, MODE*20, MSG*10
PARAMETER (FF = 12)
PARAMETER (DEFNAM = 'PGPLOT.CCPLT')
DATA INIT /.TRUE./
DATA CTAB /100, 100, 100, 0, 0, 0, 100, 0, 0,
1 0, 100, 0, 0, 0, 100, 0, 100, 100,
2 100, 0, 100, 100, 100, 0, 100, 50, 0,
3 50, 100, 0, 0, 100, 50, 0, 50, 100,
4 50, 0, 100, 100, 0, 50, 33, 33, 33,
5 67, 67, 67, 720 * 0/
C-----------------------------------------------------------------------
C First time, do some one-time
C initialization.
IF (INIT) THEN
C Make sure we only do this once.
INIT = .FALSE.
C Initialize the maximum color
C index currently used.
MAXCOL = 0
C The default is low resolution,
C landscape orientation.
LANDSCAPE = .TRUE.
HIRES = .FALSE.
C Select mode based on logical.
CALL GRGENV ('CC_MODE', MODE, I)
IF (MODE(1:1) .EQ. 'P') LANDSCAPE = .FALSE.
IF (MODE(2:2) .EQ. 'H') HIRES = .TRUE.
END IF
C Branch on opcode.
GOTO ( 10, 20, 30, 40, 50, 60, 70, 80, 90, 100,
1 110, 120, 130, 140, 150, 160, 170, 180, 190, 200,
2 210, 220, 230, 240, 250, 260), IFUNC
C Signal an error.
900 WRITE (MSG, '(I10)') IFUNC
CALL GRWARN ('Unimplemented function in LJ250 device driver:'
1 // MSG)
NBUF = -1
RETURN
C
C--- IFUNC = 1, Return device name -------------------------------------
C
10 CONTINUE
CHR = TYPE
NBUF = 0
LCHR = LEN(TYPE)
RETURN
C
C--- IFUNC = 2, Return physical min and max for plot device, and range
C of color indices ---------------------------------------
C
20 CONTINUE
RBUF(1) = 0.0
IF (HIRES .AND. LANDSCAPE) RBUF(2) = 1889.0
IF (HIRES .AND. .NOT. LANDSCAPE) RBUF(2) = 1439.0
IF (.NOT. HIRES .AND. LANDSCAPE) RBUF(2) = 944.0
IF (.NOT. HIRES .AND. .NOT. LANDSCAPE) RBUF(2) = 719.0
RBUF(3) = 0.0
IF (HIRES .AND. LANDSCAPE) RBUF(4) = 1439.0
IF (HIRES .AND. .NOT. LANDSCAPE) RBUF(4) = 1889.0
IF (.NOT. HIRES .AND. LANDSCAPE) RBUF(4) = 719.0
IF (.NOT. HIRES .AND. .NOT. LANDSCAPE) RBUF(4) = 944.0
RBUF(5) = 0.0
IF (HIRES) THEN
RBUF(6) = 7.0
ELSE
RBUF(6) = 255.0
END IF
NBUF = 6
LCHR = 0
RETURN
C
C--- IFUNC = 3, Return device resolution -------------------------------
C
30 CONTINUE
IF (HIRES) THEN
RBUF(1) = 180.0
ELSE
RBUF(1) = 90.0
END IF
RBUF(2) = RBUF(1)
RBUF(3) = 1.0
NBUF = 3
LCHR = 0
RETURN
C
C--- IFUNC = 4, Return misc device info --------------------------------
C (This device is Hardcopy, No cursor, No dashed lines, No area fill,
C no thick lines)
C
40 CONTINUE
CHR = 'HNNNNNNNNN'
NBUF = 0
LCHR = 10
RETURN
C
C--- IFUNC = 5, Return default file name -------------------------------
C
50 CONTINUE
CHR = DEFNAM
NBUF = 0
LCHR = LEN(DEFNAM)
RETURN
C
C--- IFUNC = 6, Return default physical size of plot -------------------
C
60 CONTINUE
RBUF(1) = 0.0
IF (HIRES .AND. LANDSCAPE) RBUF(2) = 1889.0
IF (HIRES .AND. .NOT. LANDSCAPE) RBUF(2) = 1439.0
IF (.NOT. HIRES .AND. LANDSCAPE) RBUF(2) = 944.0
IF (.NOT. HIRES .AND. .NOT. LANDSCAPE) RBUF(2) = 719.0
RBUF(3) = 0.0
IF (HIRES .AND. LANDSCAPE) RBUF(4) = 1439.0
IF (HIRES .AND. .NOT. LANDSCAPE) RBUF(4) = 1889.0
IF (.NOT. HIRES .AND. LANDSCAPE) RBUF(4) = 719.0
IF (.NOT. HIRES .AND. .NOT. LANDSCAPE) RBUF(4) = 944.0
NBUF = 4
LCHR = 0
RETURN
C
C--- IFUNC = 7, Return misc defaults -----------------------------------
C
70 CONTINUE
RBUF(1) = 1.0
NBUF = 1
LCHR = 0
RETURN
C
C--- IFUNC = 8, Select plot --------------------------------------------
C
80 CONTINUE
RETURN
C
C--- IFUNC = 9, Open workstation ---------------------------------------
C
90 CONTINUE
C Assume success.
RBUF(2) = 1.0
C Obtain a logical unit number.
CALL GRGLUN (LUN)
C Check for an error.
IF (LUN .EQ. -1) THEN
CALL GRWARN ('Cannot allocate a logical unit.')
RBUF(2) = 0
RETURN
ELSE
RBUF(1) = LUN
END IF
C Open the output file.
OPEN (UNIT = LUN, FILE = CHR(:LCHR), CARRIAGECONTROL = 'NONE',
1 DEFAULTFILE = DEFNAM, STATUS = 'NEW',
2 RECL = 362, FORM = 'UNFORMATTED', RECORDTYPE = 'VARIABLE',
3 IOSTAT = IER)
C Check for an error and cleanup if
C one occurred.
IF (IER .NE. 0) THEN
CALL GRWARN ('Cannot open output file for LJ250 plot: ' //
1 CHR(:LCHR))
RBUF(2) = 0
CALL GRFLUN (LUN)
RETURN
ELSE
C Get the full file specification
C and calculate the length of the
C string
INQUIRE (UNIT = LUN, NAME = CHR)
LCHR = LEN (CHR)
91 IF (CHR (LCHR:LCHR) .EQ. ' ') THEN
LCHR = LCHR - 1
GOTO 91
END IF
END IF
C Initialize the page counter.
NPICT = 0
RETURN
C
C--- IFUNC = 10, Close workstation -------------------------------------
C
100 CONTINUE
C Close the file.
CLOSE (LUN, STATUS = 'KEEP')
C Deallocate the logical unit.
CALL GRFLUN (LUN)
C
RETURN
C
C--- IFUNC = 11, Begin picture -----------------------------------------
C
110 CONTINUE
C Calculate the dimensions of the
C plot buffer.
IF (LANDSCAPE) THEN
XBUF(1) = RBUF(2)
XBUF(2) = RBUF(1)
ELSE
XBUF(1) = RBUF(1)
XBUF(2) = RBUF(2)
END IF
BX = INT (XBUF(1)) + 1
BY = (INT (XBUF(2)) / 6 + 1) * 6
C Allocate a plot buffer.
IER = GRGMEM (BX * BY, BUFFER)
C Check for error and clean up
C if one was found.
IF (IER .NE. 1) THEN
CALL GRGMSG (IER)
CALL GRQUIT ('Failed to allocate a plot buffer.')
END IF
C Increment the page number.
NPICT = NPICT + 1
C Eject the page from the printer.
IF (NPICT .GT. 1) WRITE (LUN) FF
C Zero out the plot buffer.
CALL GRCC04 (BX * BY, %VAL(BUFFER))
RETURN
C
C--- IFUNC = 12, Draw line ---------------------------------------------
C
120 CONTINUE
C Apply any needed tranformation.
IF (LANDSCAPE) THEN
XBUF(1) = RBUF(2)
XBUF(2) = (BY - 1) - RBUF(1)
XBUF(3) = RBUF(4)
XBUF(4) = (BY - 1) - RBUF(3)
ELSE
XBUF(1) = RBUF(1)
XBUF(2) = RBUF(2)
XBUF(3) = RBUF(3)
XBUF(4) = RBUF(4)
END IF
C Draw the point into the bitmap.
CALL GRCC00 (1, XBUF, IC, BX, BY, %VAL (BUFFER))
RETURN
C
C--- IFUNC = 13, Draw dot ----------------------------------------------
C
130 CONTINUE
C Apply any needed tranformation.
IF (LANDSCAPE) THEN
XBUF(1) = RBUF(2)
XBUF(2) = (BY - 1) - RBUF(1)
ELSE
XBUF(1) = RBUF(1)
XBUF(2) = RBUF(2)
END IF
C Draw the point into the bitmap.
CALL GRCC00 (0, XBUF, IC, BX, BY, %VAL(BUFFER))
RETURN
C
C--- IFUNC = 14, End picture -------------------------------------------
C
140 CONTINUE
C Write out the bitmap.
CALL GRCC01 (LUN, BX, BY, %VAL (BUFFER), MAXCOL, HIRES, CTAB)
C Deallocate the plot buffer.
IER = GRFMEM (BX * BY, BUFFER)
C Check for an error.
IF (IER .NE. 1) THEN
CALL GRGMSG (IER)
CALL GRWARN ('Failed to deallocate plot buffer.')
END IF
RETURN
C
C--- IFUNC = 15, Select color index ------------------------------------
C
150 CONTINUE
C Save the requested color index.
IC = RBUF(1)
MAXCOL = MAX (IC, MAXCOL)
RETURN
C
C--- IFUNC = 16, Flush buffer. -----------------------------------------
C (Not implemented: ignored.)
C
160 CONTINUE
RETURN
C
C--- IFUNC = 17, Read cursor. ------------------------------------------
C (Not implemented: should not be called.)
C
170 CONTINUE
GOTO 900
C
C--- IFUNC = 18, Erase alpha screen. -----------------------------------
C (Not implemented: ignored.)
C
180 CONTINUE
RETURN
C
C--- IFUNC = 19, Set line style. ---------------------------------------
C (Not implemented: should not be called.)
C
190 CONTINUE
GOTO 900
C
C--- IFUNC = 20, Polygon fill. -----------------------------------------
C (Not implemented: should not be called.)
C
200 CONTINUE
GOTO 900
C
C--- IFUNC = 21, Set color representation. -----------------------------
C
210 CONTINUE
I = INT (RBUF(1) + 1.5)
CTAB(1, I) = INT (RBUF(2) * 100.0 + 0.5)
CTAB(2, I) = INT (RBUF(3) * 100.0 + 0.5)
CTAB(3, I) = INT (RBUF(4) * 100.0 + 0.5)
RETURN
C
C--- IFUNC = 22, Set line width. ---------------------------------------
C (Not implemented: should not be called.)
C
220 CONTINUE
GOTO 900
C
C--- IFUNC = 23, Escape ------------------------------------------------
C (Not implemented: ignored.)
C
230 CONTINUE
RETURN
C
C--- IFUNC = 24, Rectangle fill. ---------------------------------------
C (Not implemented: should not be called.)
C
240 CONTINUE
GOTO 900
C
C--- IFUNC = 25, -------------------------------------------------------
C (Not implemented: should not be called.)
C
250 CONTINUE
GOTO 900
C
C--- IFUNC = 26, Line of pixels. ---------------------------------------
C (Not implemented: should not be called.)
C
260 CONTINUE
GOTO 900
C-----------------------------------------------------------------------
END
C*GRCC00 -- PGPLOT LJ250 driver, draw a colored line
C+
SUBROUTINE GRCC00 (LINE, RBUF, ICOL, BX, BY, BITMAP)
IMPLICIT NONE
INTEGER*4 BX, BY, ICOL, LINE
BYTE BITMAP(BX, BY)
REAL*4 RBUF(4)
C
C Draw a straight line segment from absolute pixel coordinates (RBUF(1),
C RBUF(2)) to (RBUF(3), RBUF(4)). The line overwrites the previous
C contents of the bitmap with the current color index. The line is
C generated with a Simple Digital Differential Analyser (ref: Newman &
C Sproull).
C
C Arguments:
C
C LINE I I =0 for dot, =1 for line.
C RBUF(1),RBUF(2) I R Starting point of line.
C RBUF(3),RBUF(4) I R Ending point of line.
C ICOL I I Color index
C BITMAP I/O B (address of) the frame buffer.
C
C-----------------------------------------------------------------------
INTEGER*4 K, KX, KY, LENGTH
REAL*4 D, XINC, XP, YINC, YP
C-----------------------------------------------------------------------
IF (LINE .GT. 0) THEN
D = MAX (ABS (RBUF(3) - RBUF(1)), ABS (RBUF(4) - RBUF(2)))
LENGTH = D
IF (LENGTH .EQ. 0) THEN
XINC = 0.0
YINC = 0.0
ELSE
XINC = (RBUF(3) - RBUF(1)) / D
YINC = (RBUF(4) - RBUF(2)) / D
END IF
ELSE
LENGTH = 0
XINC = 0.0
YINC = 0.0
END IF
XP = RBUF(1) + 0.5
YP = RBUF(2) + 0.5
DO K = 0, LENGTH
KX = XP
KY = (BY - 1) - INT (YP)
BITMAP(KX + 1, KY + 1) = ICOL
XP = XP + XINC
YP = YP + YINC
END DO
C-----------------------------------------------------------------------
RETURN
END
C*GRCC01 -- PGPLOT LJ250 driver, copy bitmap to Sixel output file
C+
SUBROUTINE GRCC01 (LUN, BX, BY, BITMAP, NC, HIRES, CTAB)
IMPLICIT NONE
LOGICAL HIRES
INTEGER BX, BY, LUN, NC
BYTE BITMAP(BX, BY), CTAB(3, 256)
C
C Arguments:
C
C LUN (input) Fortran unit number for output
C BX, BY (input) dimensions of BITMAP (BY MUST be a multiple of 6)
C BITMAP (input) the bitmap array
C NC (input) the maximum color index used in the bitmap
C CTAB (input) the color table
C-----------------------------------------------------------------------
BYTE ESC
INTEGER*4 BUFF, GRCC03, I, IER, J, K, L, GRGMEM, M
CHARACTER BLUE*3, COL*3, GREEN*3, RED*3
PARAMETER (ESC = 27)
C-----------------------------------------------------------------------
C Start Sixel graphics mode.
IF (HIRES) THEN
WRITE (LUN) ESC, 'P;1;;q"1;1;;-------'
ELSE
WRITE (LUN) ESC, 'P;1;8;q"1;1;;---'
END IF
C Write out the color table.
DO I = 1, NC + 1
J = GRCC03 (I - 1)
K = CTAB(1, I)
K = GRCC03 (K)
L = CTAB(2, I)
L = GRCC03 (L)
M = CTAB(3, I)
M = GRCC03 (M)
WRITE (COL, '(I3)') I - 1
WRITE (RED, '(I3)') CTAB(1, I)
WRITE (GREEN, '(I3)') CTAB(2, I)
WRITE (BLUE, '(I3)') CTAB(3, I)
WRITE (LUN) '#', COL(4 - J : 3), ';2;', RED(4 - K : 3), ';',
1 GREEN(4 - L : 3), ';', BLUE(4 - M : 3)
END DO
C Allocate a work array.
IER = GRGMEM (BX * (NC + 1), BUFF)
C Check for an error.
IF (IER .NE. 1) THEN
CALL GRGMSG (IER)
CALL GRQUIT ('Failed to allocate temporary buffer.')
END IF
C Output the Sixel data.
CALL GRCC02 (LUN, BX, BY, BITMAP, NC + 1, %VAL (BUFF))
C Turn off Sixel graphics mode.
WRITE (LUN) ESC, CHAR(92)
C-----------------------------------------------------------------------
RETURN
END
C*GRCC02 -- PGPLOT LJ250 driver, output the bitmap
C+
SUBROUTINE GRCC02 (LUN, BX, BY, BITMAP, NC, SIXEL)
IMPLICIT NONE
INTEGER BX, BY, LUN, NC
BYTE BITMAP(BX, BY), SIXEL(BX, NC)
C
C Version 1.0 18-Jun-1989 S. C. Allendorf
C-----------------------------------------------------------------------
BYTE CH, QMASK(6)
LOGICAL OUTPUT
INTEGER*4 GRCC03, I, J, K, L, M, N, REPCNT
CHARACTER COL*3, OUTLINE*1445, REP*4
DATA QMASK /'01'X, '02'X, '04'X, '08'X, '10'X, '20'X/
C-----------------------------------------------------------------------
C Output the Sixel data.
DO I = 1, BY / 6
C Zero out the work array.
CALL GRCC04 (BX * NC, SIXEL)
C Create a Sixel line.
DO J = 1, 6
DO K = 1, BX
L = BITMAP(K, (I - 1) * 6 + J) + 1
SIXEL(K, L) = SIXEL(K, L) .OR. QMASK(J)
END DO
END DO
C Loop through each color plane.
DO J = 1, NC
C Add the Sixel offset.
DO K = 1, BX
SIXEL(K, J) = SIXEL(K, J) + 63
END DO
C Initialize some variables for
C run-length encoding.
K = 1
L = 1
M = 1
OUTPUT = .FALSE.
C Stop if we are at the end of the
C line.
10 IF (K .LE. BX) THEN
C Find the next character.
CH = SIXEL(K, J)
C Count the repeats.
20 IF (M .LE. BX .AND. CH .EQ. SIXEL(M, J)) THEN
M = M + 1
GOTO 20
END IF
C Determine the length.
REPCNT = M - K
C See if there is any printable
C data in this buffer.
IF (REPCNT .NE. BX .OR. SIXEL(M - 1, J) .NE. 63) THEN
C Mark the buffer as containing
C printable data.
OUTPUT = .TRUE.
C Fill the output buffer.
IF (REPCNT .GE. 3) THEN
WRITE (REP, '(I4)') REPCNT
N = GRCC03 (REPCNT)
OUTLINE(L : L) = '!'
OUTLINE(L + 1 : L + N) = REP (5 - N : 4)
OUTLINE(L + N + 1 : L + N + 1) =
1 CHAR (SIXEL(M - 1, J))
L = L + N + 2
ELSE
DO N = 0, REPCNT - 1
OUTLINE(L + N : L + N) = CHAR (SIXEL(M - 1, J))
END DO
L = L + REPCNT
END IF
END IF
C Reinitialize the starting point
C for the next string and jump to
C start of run length encoding.
K = M
GOTO 10
END IF
C Write out the buffer if there is
C any data in it.
IF (OUTPUT) THEN
WRITE (COL, '(I3)') J - 1
N = GRCC03 (J - 1)
WRITE (LUN) '#', COL(4 - N : 3), OUTLINE(1 : L - 1), '$'
END IF
END DO
C Output a graphics linefeed.
WRITE (LUN) '-'
END DO
C------------------------------------------------------------------------
RETURN
END
C*GRCC03 -- PGPLOT LJ250 driver, calculate length of an integer
C+
INTEGER FUNCTION GRCC03 (I)
INTEGER I
C
C This function calculates the number of digits in a supplied integer.
C
C Arguments:
C
C I I I Integer value of number
C GRCC03 O I Length of printed representation of I
C
C Version 1.0 10-Feb-1988 S. C. Allendorf
C-----------------------------------------------------------------------
IF (I .GE. 10) THEN
IF (I .GE. 100) THEN
IF (I .GE. 1000) THEN
GRCC03 = 4
ELSE
GRCC03 = 3
END IF
ELSE
GRCC03 = 2
END IF
ELSE
GRCC03 = 1
END IF
C-----------------------------------------------------------------------
RETURN
END
C*GRCC04 -- zero fill buffer
C+
SUBROUTINE GRCC04 (BUFSIZ,BUFFER)
C
C GRPCKG (internal routine): fill a buffer with a given character.
C
C Arguments:
C
C BUFFER (byte array, input): (address of) the buffer.
C BUFSIZ (integer, input): number of bytes in BUFFER.
C-----------------------------------------------------------------------
INTEGER BUFSIZ, I
BYTE BUFFER(BUFSIZ), FILL
DATA FILL /0/
C
DO 10 I=1,BUFSIZ
BUFFER(I) = FILL
10 CONTINUE
END
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