1Sldtoppm User Manual(0) Sldtoppm User Manual(0)
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6 sldtoppm - convert an AutoCAD slide file to a PPM image
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10 sldtoppm [-adjust] [-dir] [{-height|-ysize} s] [-info] [{-lib|-Lib}
11 name] [-scale s] [-verbose] [{-width|-xsize} s] [slidefile]
12 All options can be abbreviated to their shortest unique prefix.
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17 This program is part of Netpbm(1).
18 sldtoppm reads an AutoCAD® slide file and outputs a PPM image. If you
20 don't specify slidefile, sldtoppm reads input from Standard Input.
21 sldtoppm uses the ppmdraw library to convert the vector and polygon in‐
22 formation in the slide file to a raster; see the file ppmdraw.h for de‐
23 tails on this package.
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27 In addition to the options common to all programs based on libnetpbm
28 (most notably -quiet, see
29 Common Options ⟨index.html#commonoptions⟩ ), sldtoppm recognizes the
30 following command line options:
31 -adjust
35 If the display on which the slide file was created had non-
36 square pixels, when you process the slide with sldtoppm and
37 don't specify -adjust, sldtoppm issues the following warning;
38 Warning - pixels on source screen were non-square.
40 Specifying -adjust will correct the image width to compensate. Speci‐
42 fying the -adjust option causes sldtoppm to scale the width of the im‐
43 age so that pixels in the resulting PPM image are square (and hence
44 circles appear as true circles, not ellipses). The scaling is per‐
45 formed in the vector domain, before scan converting the objects. The
46 results are, therefore, superior in appearance to what you'd obtain
47 were you to perform the equivalent scaling with pamscale after the bit‐
48 map had been created.
49 -dir The input is assumed to be an AutoCAD slide library file. A di‐
52 rectory listing each slide in the library is printed on standard
53 error.
54 -height size
57 Scales the image in the vector domain so it is size pixels in
58 height. If you don't specify -width or -xsize, sldtoppm adjusts
59 the width to preserve the pixel aspect ratio.
60 -info Dump the slide file header on standard error, displaying the
63 original screen size and aspect ratio among other information.
64 -lib name
67 Extracts the slide with the given name from the slide library
68 given as input. sldtoppm converts the specified name to upper
69 case.
70 -Lib name
73 Extracts the slide with the given name from the slide library
74 given as input. sldtoppm uses name in the case specified; it
75 does not convert it to upper case.
76 -scale s
79 Scales the image by factor s, which may be any floating point
80 value greater than zero. sldtoppm does the scaling after aspect
81 ratio adjustment, if any. Since it does the scaling in the vec‐
82 tor domain, before rasterisation, the results look much better
83 than running the output of sldtoppm through pamscale.
84 -verbose
87 Dumps the slide file header and lists every vector and polygon
88 to Standard Error.
89 -width size
92 Scales the image in the vector domain so it is size pixels wide.
93 If you don't specify -height or -ysize, sldtoppm adjusts the
94 height to preserve the pixel aspect ratio.
95 -xsize size
98 Scales the image in the vector domain so it is size pixels wide.
99 If you don't specify -height or -ysize, sldtoppm adjusts the
100 height to preserve the pixel aspect ratio.
101 -ysize size
104 Scales the image in the vector domain so it is size pixels in
105 height. If you don't specify -width or -xsize, sldtoppm adjusts
106 the width to preserve the pixel aspect ratio.
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112 sldtoppm can convert only Level 2 slides. Level 1 format has been ob‐
113 solete since the advent of AutoCAD Release 9 in 1987, and was not por‐
114 table across machine architectures.
115 Slide library items with names containing 8 bit (such as ISO) or 16 bit
117 (Kanji, for example) characters may not be found when chosen with the
118 -lib option unless sldtoppm was built with character set conversion
119 functions appropriate to the locale. You can always retrieve slides
120 from libraries regardless of the character set by using the -Lib option
121 and specifying the precise name of library member. Use the -dir option
122 to list the slides in a library if you're unsure of the exact name.
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126 AutoCAD Reference Manual: Slide File Format, pamscale(1), ppm(1)
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130 John Walker
131 Autodesk SA
132 Avenue des Champs-Montants 14b
133 CH-2074 MARIN
134 Suisse/Schweiz/Svizzera/Svizra/Switzerland
135 Usenet:kelvin@Autodesk.com
136 Fax:038/33 88 15
137 Voice:038/33 76 33
138 Permission to use, copy, modify, and distribute this software and its
141 documentation for any purpose and without fee is hereby granted, with‐
142 out any conditions or restrictions. This software is provided "as is"
143 without express or implied warranty.
144 AutoCAD and Autodesk are registered trademarks of Autodesk, Inc.
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148 This manual page was generated by the Netpbm tool 'makeman' from HTML
149 source. The master documentation is at
150 http://netpbm.sourceforge.net/doc/sldtoppm.html
152netpbm documentation 10 October 1991 Sldtoppm User Manual(0)