'===========================================================================
' Subject: PRINT GRAPHICS ON DOT MATRIX      Date: 11-08-98 (18:49)       
' Author:  ATyler85@aol.com                  Code: QB, PDS                
' Origin:  ATyler85@aol.com                Packet: MISC.ABC
'===========================================================================
' This program prints 320 by 200 graphic images on a regular Dot Matrix printer.
DECLARE SUB EPRINT (widths!, lines!)
DECLARE FUNCTION getbit! (y!, x!)

DECLARE SUB pstring (s$)
DECLARE SUB pchar (c!)
'$INCLUDE: 'c:\qb\qb.bi'
DIM SHARED InRegs AS RegType, OutRegs AS RegType
' sub uses picture, widths,lines
DIM SHARED bits(1 TO 10)
SCREEN 13
' Image here(black and white, only)
CIRCLE (50, 50), 50
EPRINT 200, 320

SUB EPRINT (lines, widths)
width$ = HEX$(widths)
IF LEN(width$) = 0 THEN END
IF LEN(width$) = 1 THEN width$ = "000" + width$
IF LEN(width$) = 2 THEN width$ = "00" + width$
IF LEN(width$) = 3 THEN width$ = "0" + width$
pstring CHR$(27) + "@"
FOR i = 0 TO lines STEP 8
pstring CHR$(&H1B) + "*" + CHR$(6)
pchar VAL("&H" + RIGHT$(width$, 2))
pchar VAL("&H" + LEFT$(width$, 2))
FOR j = 0 TO widths
a = getbit(i, j)
pchar a
a = 0
NEXT j
pstring CHR$(13) + CHR$(27) + "J" + CHR$(18)
NEXT i
pstring CHR$(27) + "@"
END SUB

FUNCTION getbit (y, x)
IF y + 8 > 199 THEN END
FOR i = y + 8 TO y STEP -1
j = j + 1
IF POINT(x, i) = 0 THEN
bits(j) = 0
ELSE
bits(j) = 1
END IF
NEXT i
jay = (bits(1) * 1) + (bits(2) * 2) + (bits(3) * 4) + (bits(4) * 8)
jay = jay + (bits(5) * 16) + (bits(6) * 32) + (bits(7) * 64) + (bits(8) * 128)
getbit = jay
END FUNCTION

SUB pchar (c)
' Wait for printer to receive character
DO
InRegs.ax = &H200
InRegs.dx = 0
CALL INTERRUPT(&H17, InRegs, OutRegs)
LOOP WHILE ((OutRegs.ax AND &HFF) AND &H80) = 1
' Print character
InRegs.ax = c
InRegs.dx = 0
CALL INTERRUPT(&H17, InRegs, OutRegs)
END SUB

SUB pstring (s$)
FOR i = 1 TO LEN(s$)
B = ASC(MID$(s$, i, 2))
pchar B
NEXT i
END SUB