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
22 information in the slide file to a raster; see the file ppmdraw.h for
23 details on this package.
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27 -adjust
28 If the display on which the slide file was created had non-
29 square pixels, when you process the slide with sldtoppm and
30 don't specify -adjust, sldtoppm issues the following warning;
31 Warning - pixels on source screen were non-square.
33 Specifying -adjust will correct the image width to compensate. Speci‐
35 fying the -adjust option causes sldtoppm to scale the width of the
36 image so that pixels in the resulting PPM image are square (and hence
37 circles appear as true circles, not ellipses). The scaling is per‐
38 formed in the vector domain, before scan converting the objects. The
39 results are, therefore, superior in appearance to what you'd obtain
40 were you to perform the equivalent scaling with pamscale after the bit‐
41 map had been created.
42 -dir The input is assumed to be an AutoCAD slide library file. A
45 directory listing each slide in the library is printed on stan‐
46 dard error.
47 -height size
50 Scales the image in the vector domain so it is size pixels in
51 height. If you don't specify -width or -xsize, sldtoppm adjusts
52 the width to preserve the pixel aspect ratio.
53 -info Dump the slide file header on standard error, displaying the
56 original screen size and aspect ratio among other information.
57 -lib name
60 Extracts the slide with the given name from the slide library
61 given as input. sldtoppm converts the specified name to upper
62 case.
63 -Lib name
66 Extracts the slide with the given name from the slide library
67 given as input. sldtoppm uses name in the case specified; it
68 does not convert it to upper case.
69 -scale s
72 Scales the image by factor s, which may be any floating point
73 value greater than zero. sldtoppm does the scaling after aspect
74 ratio adjustment, if any. Since it does the scaling in the vec‐
75 tor domain, before rasterisation, the results look much better
76 than running the output of sldtoppm through pamscale.
77 -verbose
80 Dumps the slide file header and lists every vector and polygon
81 to Standard Error.
82 -width size
85 Scales the image in the vector domain so it is size pixels wide.
86 If you don't specify -height or -ysize, sldtoppm adjusts the
87 height to preserve the pixel aspect ratio.
88 -xsize size
91 Scales the image in the vector domain so it is size pixels wide.
92 If you don't specify -height or -ysize, sldtoppm adjusts the
93 height to preserve the pixel aspect ratio.
94 -ysize size
97 Scales the image in the vector domain so it is size pixels in
98 height. If you don't specify -width or -xsize, sldtoppm adjusts
99 the width to preserve the pixel aspect ratio.
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105 sldtoppm can convert only Level 2 slides. Level 1 format has been
106 obsolete since the advent of AutoCAD Release 9 in 1987, and was not
107 portable across machine architectures.
108 Slide library items with names containing 8 bit (such as ISO) or 16 bit
110 (Kanji, for example) characters may not be found when chosen with the
111 -lib option unless sldtoppm was built with character set conversion
112 functions appropriate to the locale. You can always retrieve slides
113 from libraries regardless of the character set by using the -Lib option
114 and specifying the precise name of library member. Use the -dir option
115 to list the slides in a library if you're unsure of the exact name.
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119 AutoCAD Reference Manual: Slide File Format, pamscale(1), ppm(1)
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123 John Walker
124 Autodesk SA
125 Avenue des Champs-Montants 14b
126 CH-2074 MARIN
127 Suisse/Schweiz/Svizzera/Svizra/Switzerland
128 Usenet:kelvin@Autodesk.com
129 Fax:038/33 88 15
130 Voice:038/33 76 33
131 Permission to use, copy, modify, and distribute this software and its
133 documentation for any purpose and without fee is hereby granted, with‐
134 out any conditions or restrictions. This software is provided 'as is'
135 without express or implied warranty.
136 AutoCAD and Autodesk are registered trademarks of Autodesk, Inc.
138netpbm documentation 10 October 1991 Sldtoppm User Manual(0)