This is the command sldtoppm that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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® 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 package.
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 present, 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, displaying 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 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 prefix.
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