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hp2xx(1)                                                              hp2xx(1)

       hp2xx - A HPGL converter into some vector- and raster formats

       hp2xx [-options] [hpgl-file(s)]

       Option Format  Default   Description
       General options:
         -c   char *  11111111  Pen color(s). Valid: 1 to 8 digits of 0-7 each.
                                0=off, 1=black, 2=red, 3=green, 4=blue, 5=cyan,
                                6=magenta, 7=yellow.
         -f   char *  ""        Name of output file. "" = autom., "-" = stdout
         -l   char *  ""        Name of optional log file
         -m   char *  pre       Mode. Valid:
         -p   char *  11111111  Pensize(s) [dots] (default), [1/10 mm] (mf, ps).
                                Valid: 1 to 8 digits of 0-9 each.
         -P   int     0:0       Selected page range (m:n) (0 = 0:0 = all pages)
         -q           off       Quiet mode. No diagnostic output.
         -r   double  0.0       Rotation angle [deg]. -r90 gives landscape
         -s   char *  hp2xx.swp Name of swap file

       Size controls:
         -a   double  1.0       Aspect factor. Valid: > 0.0
         -h   double  200       Height [mm] of picture
         -w   double  200       Width  [mm] of picture
         -x   double   -        Preset xmin value of HPGL coordinate range
         -X   double   -        Preset xmax value of HPGL coordinate range
         -y   double   -        Preset ymin value of HPGL coordinate range
         -Y   double   -        Preset ymax value of HPGL coordinate range
         -t           off       True size mode. Inhibits effects of -a -h -w

       Raster format controls:
         -d   int     75        DPI value (x or both x&y)
         -D   int     75        DPI value (y only)

       PCL only:
         -F           off       Send a FormFeed after graphics data
         -i           off       Pre-initialize printer
         -S   int     0         (Deskjet) Special commands: 0=off,1=b/w,3=CMY,4=CMYK
         -d   (see above)       Valid ONLY 300, 150, 100, 75
         -D   (see above)       INVALID for PCL!

       EPS, PCL, and some previews:
         -o   double  0.0       x offset [mm] of picture (left  margin)
         -O   double  0.0       y offset [mm] of picture (upper margin)
         -C                     Modify -o -O to center picture within -w -h frame

       TIFF only:
         -S   int     0         Compression: 0/1=off,2=RLE,3=G3FAX,4=G4FAX,

       Preview on PC's (DOS):
         -V   int     18        VGA mode byte (decimal)
         -H              Show help.

       hp2xx reads HPGL ASCII source files, interprets them, and converts them
       into  either  another  vector-oriented   format  or  one   of   several
       rasterfile  formats. Currently, its HPGL parser recognizes a large sub-
       set of HPGL/2.  Some high-level functions related  to  polygon  filling
       are  missing.  Also, only some of the fixed space vector fonts and none
       of the variable space arc fonts are  supported.  Beside  these  limita-
       tions,  hp2xx  has  proven  to work with many HP-GL sources without any

       hp2xx reads from stdin or from a file if any given on the command line.
       If  no  output  file  name is given (default), the output automatically
       goes into a file whose name is derived from the input file name and the
       current mode. For example, hp2xx -m pcl foo.hpgl writes the output to a
       file "foo.pcl". Use option -f outfile to specify your output file  name
       explicitly,  or  -I  -f-  to  write  to stdout, e.g. when piping into a

       The program scans the current HPGL source, converts  all  drawing  com-
       mands  into  elementary  vectors,  saves these in a temporary file, and
       concurrently determines the maximum coordinate range used. It then pro-
       cesses  the vectors by mapping them into a user-defined coordinate sys-
       tem, preserving the aspect ratio of the original data.

       This coordinate system by default fits into a window of size 200 mm  by
       200  mm.  To change the size of this bounding window, use -h height and
       -w width to set the (max.) desired height and width of your output pic-
       ture;  optionally  use -a aspectfactor to alter the aspect ratio by the
       given factor (aspectfactor < 1 narrows your  picture).   The  generated
       picture  will  always  fit  into the window defined by -h height and -w
       width, padded with background color at the lower  or  right  margin  if

       A second way of defining sizes is relying on the size the picture would
       actually show if plotted on a sheet of paper by a  HP-compatible  plot-
       ter.  By  activating flag -I -t (true size), options -a, -h, and -w are
       ignored, and the sizes are derived from the HP-GL file assuming that  1
       HP unit = 1/40 mm.

       Option  -r  rotation_angle (in degrees) allows you to rotate the object
       prior to all scaling operations. Its main use is  to  facilitate  land-
       scape  format:  -r90  rotates  your whole picture, e.g. from portait to
       landscape format. However, any reasonable rotation angle is valid.

       By naming a file with option -l log_file you can redirect the  diagnos-
       tic  outputs  into the given file, even without a redirection mechanism
       for stderr like in UNIX shells (e. g., DOS).  Option  -q  (quiet)  gets
       rid of them completely.

       If  you  need  to  process  a series of similar objects which should be
       translated into exactly the same coordinate system, there is a  way  to
       override the auto-scaling: First, run all files separately and note the
       infos on the used coordinate ranges. Then, pick a range that will cover
       ALL  your pictures.  You can now assign defaults to the internally gen-
       erated range limits by specifying -x xmin, -X xmax,  -y  ymin,  and  -Y
       ymax.   NOTE:  Clipping  is  only supported via the IW command ! If any
       picture coordinate exceeds your limits, they will be overwritten.

       Use option -m mode to select the program mode, i.e. the output  format.
       Currently  supported:  mode  = "mf" (Metafont), "em" (emTeX cial{} com-
       mands), "epic" (line drawing using TeX macros within  epic.sty),  "eps"
       (PostScript), "dxf" (Autocad), "emf/emp" (MS Enhanced Metafile / Print-
       ing - available in Windows-built  executables  only),  "svg"  (Scalable
       Vector Graphics), "fig" (XFig 3.2), "gpt" (GnuPlot ascii), "hpgl" (sim-
       plified HP-GL, e.g. for import tasks), "pcl"  (HP-PCL  Level  3  format
       (suitable  for  printing  on  a  HP Laserjet II, DeskJet, or compatible
       printer), "escp2" (Epson Esc/P2 printer commands, suitable for printing
       on  Epson  Stylus models), "img" (GEMs IMG format), "jpg" (JPEG image),
       "pdf" (Adobe Portable Document  format),  "pbm"  (Portable  Bit  Map  /
       Portable  PixMap  for  color  plots), "pcx" (PC-Paintbrush format, also
       accepted by MS-Paintbrush / Windows 3.0 and many other PC  based  pixel
       renderers),  "png"  (Portable Network Graphics format), or "rgip" (Uni-
       plex RGIP).  There is also a preview option "pre"  which  supports  VGA
       cards  (DOS),  ATARI,  AMIGA, X11 servers, and Sunview. Default mode is
       "pre".  (As some of these modes rely on external  libraries,  they  may
       not  be  builtin  by default, and not be available in prebuilt binaries
       supplied e.g. in Linux distributions. The usage messsage generated when
       hp2xx  is  invoked  without  parameters  will always list exactly those
       modes that are actually available.)

       If you use a raster format, the picture is rasterized by default into a
       75  DPI resolution image. Use option -d DPI_value to change the resolu-
       tion, e.g. -d300 will cause a HP LJ-II compatible  300  dpi  rasteriza-
       tion.  There is a way of specifying a different resolution for y direc-
       tion: -D DPI_y_value

       While processing  large  pictures  at  high  resolution  on  low-memory
       machines,  typically under DOS, the program may start swapping. Option-
       ally change the swap file by using -s swapfile, e.g. to speed  up  pro-
       cessing by swapping to a RAM disk.

       Unless the hpgl file specifies its own selection of pen widths and col-
       ors (for up to 256 pens), a carousel of 8 pens is  simulated.  You  can
       specify  pen  sizes  and  colors  for each of these pens via options -p
       string and -c string.  "string" must consist of 1..8  digits  (0-9  for
       size,  0-7 for color).  Digit number n (counting from left) corresponds
       to pen number n.  The digit value is this pen's color or size in inter-
       nal  units.  For raster formats, a unit is a pixel, and for vector for-
       mat, it corresponds to 1/10 mm (see below). The default size is  1  for
       all  pens.  Colors  are  assigned  according to: 0=off, 1=black, 2=red,
       3=green,  4=blue,  5=cyan,  6=magenta,  7=yellow.   Examples  of   use:
       -p22222222  -c33333333  changes  all pensizes to 2 units, all colors to
       green -p302 -c407 makes pen #1 a blue pen of size 3 , pen #3  a  yellow
       pen  of size 2, suppresses all drawing with pen #2, and keeps all other
       pen sizes and colors.  Setting either -p or -c will override the equiv-
       alent HPGL/2 commands (PC,PW) in the HP-GL file.

       Sometimes,  HP-GL files contain several pages of plotter output.  hp2xx
       recognizes the HP-GL commands for "feed-forward" or "new page", but  by
       default  it  draws everything on a single page. You can select any par-
       ticular page range by using option -P firstpage:lastpage  which  causes
       hp2xx  to  skip  all  drawing commands except those on the given pages.
       Please note that even if only a single page is  actually  drawn,  hp2xx
       will  nonetheless  process  the  whole HP-GL file. This makes sure that
       effects of early pages on internal modes indeed influence later  pages,
       as on a real plotter.

       Supported  vector  formats are: TeX/Metafont, emTex-specials, TeX/epic-
       Macros, Autocad DXF XFig 3.2, GnuPlot ASCII, Simplified HP_GL,  Uniplex
       RGIP  Scalable  Vector Graphics (SVG) Adobe PDF(if libpdf is available)
       and -I PostScript.  Use -m mf to convert a HPGL drawing into a Metafont
       character  to be included into a TeX document as the character "Z" of a
       special font that you may create. Edit the metafont  source,  e.g.,  to
       change  the  letter  "Z"  for another, or to change the line thickness,
       which is set to 0.4pt by default.  The other TeX-related  modes  ("cad"
       for  TeXcad  compatible  code, "em" for employing cial{em:line} macros,
       and "epic" for drawing lines with macros from "epic.sty") address  dif-
       ferent  compromises to cope with TeX's poor line drawing capability and
       are generally not recommended nor fully supported. Feel free to experi-
       ment  with  them  --  they generate ASCII output that should be "input"
       into TeX/LaTeX documents.

       Use option -p pensize(s) for control over pensize: The actual  Metafont
       or  PostScript pensize will be "pensize * 0.1 mm", with pensize = 0 - 9
       (0 = no drawing).  The same applies to

       In PostScript mode (-m eps), you may also need to use options -o and -O
       (see  below)  for proper margins on paper since hp2xx puts your picture
       "flush" to the left and upper paper limit by default.

       The following formats are supported: HP-PCL,  Esc/P2,  PCX,  PIC,  IMG,
       JPG,  PBM/PPM,  PNG,  TIFF, and previews. (PNG and TIFF formats rely on
       external libpng,zlib and libtiff, JPG relies on libjpeg. Versions built
       on  MS  windows  systems  may  additionally  support EMF generation and
       printing.)  However, generation of other formats is made easy for  pro-
       grammers  because of hp2xx's modular structure. The program allocates a
       bitmap on a line-by-line basis, swapping lines to disk if  needed,  and
       plots  into this bitmap. Depending on the selected format, a conversion
       module is then activated, which can easily be replaced  by  other  con-
       verters. Add more formats if you like!

       Option -p pensize(s) controls the size (in pixels) of the virtual plot-
       ting pen. The only implemented shape of the pen tip is a square of  the
       given  length.  pen sizes of 5...9 units will be acccepted but replaced
       by 4 units.  Specifying -p4 when in 75 DPI mode will make pretty clumsy
       pictures, while you may prefer -p2 over -p1 when in 300 DPI.

       PCX:  The  size of a PCX picture is controlled via its specified height
       and the current DPI value. To create a high-resolution PCX image,  just
       increase  the DPI value as desired. PCX format does not accept offsets.

       IMG: See PCX.

       PBM/PPM: See PCX for options. If your  hpgl  file  is  not  monochrome,
       hp2xx will automatically create a PPM (portable pixmap) file instead of
       a PBM bitmap. (Use -c11111111 to force generation of PBM from  a  color
       hpgl file).  Depending on the compile-time option PBM_ASCII, hp2xx will
       create ascii or binary pbm (ppm) files -  usually  the  more  efficient
       binary format should be preferred.

       (Unsupported  options)  PIC, PAC: ATARI ST screens (640x400 pixels) can
       easily be dumped to files. Programs such as  STAD  accept  graphics  by
       including  such  screen  dump  files.   Graphics  filling more than one
       screenful may be  split  into  screen-size  blocks  and  loaded/mounted
       blockwise.   hp2xx converts to ATARI bitmap format by trying to fit the
       resulting picture into a single screen equivalent (max. 400 rows,  max.
       80  Bytes (640 pixel) per row). If it succeeds, hp2xx produces a single
       output file. Specify ONLY its base name (option -f), since  hp2xx  adds
       the  file  extension ".pic" or ".pac" automatically. Do NOT try to work
       on more than one HPGL file simultaneously! Do NOT use more than 6 char-
       acters  for  the file name, and avoid digits. If more screen blocks are
       required horizontally and/or vertically, hp2xx will automatically split
       the  picture into separate files, counting them columnwise (top-to-bot-
       tom and left-to-right), adding a two-digit number  to  the  given  file
       name. A maximum of 10 columns is supported.  The picture is padded with
       background color at its right and lower margins, if  needed.  PAC  fea-
       tures file compression, PIC does not.

       PCL:  HP-PCL Level 3 format, most useful for direct printer output. Due
       to this action, there have been added some extra flags and options: Use
       flag  -i  to  send  a printer initialization sequence before the actual
       image. Among other things, this will instruct the printer  which  paper
       size  to  use. Flag -F adds a Form Feed (FF, hex 0C) after the image is
       completed, which is what you may want most of the time. However,  over-
       lay printing of several files is feasible by omitting -F.

       For  additional  control  of the picture's final position on paper, you
       may add x or y offsets using -o X_offset or -O Y_offset. E.g., -o 20 -O
       30  will give you 30 mm additional top margin and 20 mm additional left
       margin. Option -C modifies these offsets to center the  picture  within
       the frame defined by -w -h.

       The option -C will attempt to center the drawing on the paper automati-
       cally. Note also that hp2xx now honors any PS (page size)  commands  in
       the  hpgl  file,  which  can  also create white space around the actual

       The option -N will make hp2xx ignore any PS commands given in the  hpgl
       file,  and  recalculate  the  image  size  based on the actual geometry

       The option -n will make hp2xx ignore any polygon filling commands, ren-
       dering  only  their  outlines. This may serve both as a work-around for
       hp2xx' limited polyfill  support,  and  improve  clarity  of  thumbnail
       images of PCB designs and the like.

       For  DeskJet / DeskJet Plus / DeskJet 500 / Deskjet 550 printers, there
       are some special printer commands. Activate them with option -S n.  n=0
       switches  them  off,  n=1  activates  black/white mode, n=3 (DJ500C and
       DJ550 only) supports CMY color data, n=4 (DJ550C  only)  supports  CMYK
       color data.  Any n!=0 activates PLC data compression (TIFF mode: 2).

       Esc/P2: This is the control language used in the Epson Stylus family of
       inkjets.  hp2xx currently does not address more than one line  of  noz-
       zles  in  the  print head, so printing, while exact, is extremely slow.
       Users might prefer piping the output of the PostScript  module  through
       ghostscript until this issue is resolved.

       PNG:  Support for the Portable Network Graphics format relies on libpng
       which is available from www.libpng.org.

       PRE: Preview on all machines. Use options -h -w -o -O -C to define  the
       screen  size  and  position  of  your  output  (-o -O -C may not always
       apply).  Under X11, you can pan around an image that is larger than the
       screen  size  by  'dragging' it with the mouse (pressing button 1 while
       moving the mouse in the desired direction). Any other mouse  button  or
       keyboard  key  will terminate the preview.  For VGA cards (DOS), option
       -V VGAmode gives you a simple way to utilize SVGA  modes.  Please  take
       care not to define larger windows than your graphics device can handle,
       as the results are unpredictable. As hp2xx uses standard BIOS calls  to
       set  pixels on VGA cards (slow but portable), you can select any hi-res
       mode supported by your system by simply specifying the mode  byte  with
       this option.

       TIFF:  The  tagged  image file format is supported by most graphics and
       image manipulation programs. Support for TIFF in hp2xx  relies  on  the
       TIFF library available from www.libtiff.org, which offers several means
       of image compression.  The -S commandline option selects  between  them
       as  follows:  -S 0 or -S 1: no compression -S 2: RLE (run length encod-
       ing) -S 3: Group 3 FAX (monochrome) -S 4: Group 4 FAX  (monochrome)  -S
       5:  GIF  (not available by default, because of the UNISYS patent) -S 6:
       JPEG ('old' TIFF 6.0 style) -S 7: JPEG -S 8: deflate

        % hp2xx -m pcx -f my_output.pcx -d300 -p2222 -h50 -a 1.2 my_input.hp

          creates a PCX file at 300 DPI of height 50 mm, using an aspect factor
          of 1.2 and a pen size of 2 pixels for pens 1-4.

        % my_hpgl_generator | hp2xx -f- -o20 -O30 -F -q | lpr -P my_PCL_printer

          HPGL output is piped through hp2xx; the resulting PCL code is piped to
          the printer queue, giving an image of height 100 mm at 75 DPI.
          An additional left margin of 20mm and upper margin of 30mm is created.
          A formfeed will be added (handy if your printer queue does not).

        % hp2xx my_input.hp

          Preview on screen or into window.

        Heinz W. Werntges, Physikal. Biologie, Geb. 26.12,
        D-40225 Duesseldorf, Germany.

        Martin Kroeker, daVeg GmbH,
        Schottener Weg 2
        D-64289 Darmstadt, Germany.
        mk@daveg.com or martin@ruby.chemie.uni-freiburg.de

        ATARI features & PIC, PAC, IMG modes are due to Norbert Meyer, Duesseldorf.
        AMIGA version & PBM mode are due to Claus Langhans, Kelkheim (Ts.)
        X11 previewer is due to Michael Schoene, Duesseldorf.
        Thanks for VAX support and a lot of testing to
          Michael Schmitz & Gerhard Steger, Duesseldorf
        Many OS/2 helps were due to Host Szillat, Berlin.
        (Later contributors: See TEXINFO file).

       The number of ignored and/or unknown HPGL commands is given.  You  will
       be  informed if swapping starts. Progress is indicated by a logarithmic
       count of internal vectors during scanning and plotting, or by dots dur-
       ing  (raster mode) output, where each dot corresponds to 10 scan lines.

       There still are many non-implemented HPGL commands.

       The color assignment  of  some  X11  servers  leaves  something  to  be

       Color is only partially supported (not all possible formats).

       VGA preview: Color "magenta" shows as brown on some VGA cards.

       To  match  the  specified sizes on your display during preview, you may
       have to calibrate it using -d  -D,  e.g.  by  overwriting  the  75  DPI

       Only  little testing has been done on TeX-related and ATARI formats, so
       be prepared for bugs there, and PLEASE report them --  thank you!

       bm2font(1), F. Sowa's raster-to-TeXfont converter.

                                  6 May 2001                          hp2xx(1)

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