sldtoppm man page on BSDOS

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sldtoppm(1)					   sldtoppm(1)

NAME
       sldtoppm -  convert an AutoCAD slide file into a portable
       pixmap

SYNOPSIS
       sldtoppm [-adjust] [-dir] [-height|-ysize s] [-info]
	      [-lib|-Lib name] [-scale s] [-verbose]
	      [-width|-xsize s] [slidefile]

DESCRIPTION
       Reads an AutoCAD(R) slide  file	and  outputs  a portable
       pixmap.	If no slidefile is specified, input is read from
       standard input.	The ppmdraw library is	used  to  convert
       the  vector and polygon information in the slide file to a
       pixmap; see the file ppmdraw.h for details on  this  pack-
       age.

OPTIONS
       -adjust
	      If  the display on which the slide file was created
	      had non-square pixels, when the slide is	processed
	      with  sldtoppm  and  the -adjust option is not pre-
	      sent, the following warning will appear:
		Warning -  pixels  on  source  screen  were  non-
		square.
		Specifying  -adjust  will  correct image width to
		compensate.
	      Specifying the -adjust option  causes  sldtoppm  to
	      scale  the width of the image so that pixels in the
	      resulting portable pixmap are  square  (and  hence
	      circles appear as true circles, not ellipses).  The
	      scaling is performed in the vector  domain,  before
	      scan  converting	the  objects.	The  results are,
	      therefore, superior in  appearance  to  what  you'd
	      obtain  were  you to perform the equivalent scaling
	      with pnmscale after the bitmap had been created.

       -dir   The input is assumed to be an AutoCAD slide library
	      file.   A directory  listing  each  slide	 in  the
	      library is printed on standard error.

       -height size
	      Scales the image in the vector domain so it is size
	      pixels in height. If no -width or -xsize option is
	      specified, the width will be adjusted  to preserve
	      the pixel aspect ratio.

       -info  Dump  the slide file header on standard error, dis-
	      playing the original screen size and  aspect  ratio
	      among other information.

       -lib name
	      Extracts	the  slide  with  the given name from the
	      slide library given as input.  The  specified  name

			 10 October 1991			1

sldtoppm(1)					   sldtoppm(1)

	      is converted to upper case.

       -Lib name
	      Extracts	the  slide  with  the given name from the
	      slide library given as input.   The  name is  used
	      exactly  as specified; it is not converted to upper
	      case.

       -scale s
	      Scales the image by factor  s,  which  may  be  any
	      floating point value greater than zero.  Scaling is
	      done after aspect ratio adjustment, if any.   Since
	      scaling  is  performed in the vector domain, before
	      rasterisation, the results look  much  better  than
	      running the output of sldtoppm through pnmscale.

       -verbose
	      Dumps  the slide file header and lists every vector
	      and polygon in the file on standard error.

       -width size
	      Scales the image in the vector domain so it is size
	      pixels  wide.   If  no  -height or -ysize option is
	      specified, the height will be adjusted to preserve
	      the pixel aspect ratio.

       -xsize size
	      Scales the image in the vector domain so it is size
	      pixels wide.  If no -height  or  -ysize  option  is
	      specified,  the height will be adjusted to preserve
	      the pixel aspect ratio.

       -ysize size
	      Scales the image in the vector domain so it is size
	      pixels in height. If no -width or -xsize option is
	      specified, the width will be adjusted  to preserve
	      the pixel aspect ratio.

       All flags can be abbreviated to their shortest unique pre-
       fix.

BUGS
       Only Level 2 slides are converted.   Level  1  format  has
       been  obsolete  since  the  advent of AutoCAD Release 9 in
       1987, and was not portable across machine architectures.

       Slide library items with names containing 8 bit	(such  as
       ISO)  or 16 bit (Kanji, for example) characters may not be
       found when chosen with the -lib option unless sldtoppm has
       been  built with character set conversion functions appro-
       priate to the locale.  You can always retrieve slides from
       libraries  regardless  of  the  character set by using the
       -Lib option and specifying the  precise	name  of  library
       member.	Use  the  -dir	option	to  list the slides in a

			 10 October 1991			2

sldtoppm(1)					   sldtoppm(1)

       library if you're unsure of the exact name.

SEE ALSO
       AutoCAD Reference Manual: Slide File Format,  pnmscale(1),
       ppm(5)

AUTHOR
	    John Walker
	    Autodesk SA
	    Avenue des Champs-Montants 14b
	    CH-2074 MARIN
	    Suisse/Schweiz/Svizzera/Svizra/Switzerland
	    Usenet:  kelvin@Autodesk.com
	    Fax:     038/33 88 15
	    Voice:   038/33 76 33

       Permission to use, copy, modify, and distribute this soft-
       ware and its documentation for any purpose and without fee
       is hereby granted, without any conditions or restrictions.
       This software is provided ``as  is''  without  express  or
       implied warranty.

       AutoCAD	and   Autodesk	are  registered	 trademarks  of
       Autodesk, Inc.

			 10 October 1991			3

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