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| author | William Joye <wjoye@cfa.harvard.edu> | 2019-03-20 17:30:33 (GMT) |
|---|---|---|
| committer | William Joye <wjoye@cfa.harvard.edu> | 2019-03-20 17:30:33 (GMT) |
| commit | 54d971086f3a99dd7c9552fbe07f589f43bf439c (patch) | |
| tree | 53969f74e5aef27e572e5db2af98a54b15e0a6a4 /tkimg/doc/img-ppm.man | |
| parent | cfef685ad45bc8f98a2d59fba75ba9bc6e06496d (diff) | |
| download | blt-54d971086f3a99dd7c9552fbe07f589f43bf439c.zip blt-54d971086f3a99dd7c9552fbe07f589f43bf439c.tar.gz blt-54d971086f3a99dd7c9552fbe07f589f43bf439c.tar.bz2 | |
upgrade tkimg 1.4.9
Diffstat (limited to 'tkimg/doc/img-ppm.man')
| -rwxr-xr-x | tkimg/doc/img-ppm.man | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/tkimg/doc/img-ppm.man b/tkimg/doc/img-ppm.man new file mode 100755 index 0000000..66db954 --- /dev/null +++ b/tkimg/doc/img-ppm.man @@ -0,0 +1,100 @@ +[comment {-*- tcl -*- doctools}]
+[vset FORMATNAME ppm]
+[vset FORMATFULLNAME {Portable Pixmap format}]
+
+[include format-header.inc]
+
+This handler provides additional configuration options. See
+section [sectref {PPM OPTIONS}] for more detailed explanations.
+
+[include format-middle.inc]
+
+In addition the value for the option is treated as list and may
+contain any of the special options listed in section
+
+[sectref {PPM OPTIONS}].
+
+[list_end]
+
+[section {SUPPORTED PPM TYPES}]
+
+This handler supports the PPM (Truecolor) and PGM (Greyscale) image formats.
+There are two types of PPM/PGM files: RAW (binary) and ASCII.
+The values stored in PPM/PGM files can be unsigned 8-bit or unsigned 16-bit
+values.
+
+[example_begin]
+
+ Grayscale (PGM): 8-bit and 16-bit, 1 channel per pixel.
+ Truecolor (PPM): 8-bit and 16-bit, 3 channels per pixel.
+
+ List of currently supported features:
+
+ Type | Read | Write |
+ | -file | -data | -file | -data |
+ ---------------------------------------------------
+ PGM 8-bit ASCII | Yes | Yes | No | No |
+ PGM 8-bit BINARY | Yes | Yes | No | No |
+ PGM 16-bit ASCII | Yes | Yes | No | No |
+ PGM 16-bit BINARY | Yes | Yes | No | No |
+ PPM 8-bit ASCII | Yes | Yes | Yes | Yes |
+ PPM 8-bit BINARY | Yes | Yes | Yes | Yes |
+ PPM 16-bit ASCII | Yes | Yes | No | No |
+ PPM 16-bit BINARY | Yes | Yes | No | No |
+
+[example_end]
+
+[section {PPM OPTIONS}]
+
+The handler provides the following options:
+
+[list_begin definitions]
+
+[lst_item "[option -verbose] [arg bool]"]
+
+This option is supported for reading and writing.
+[nl]
+If set to [const true], additional information about the loaded/stored image
+is printed to stdout. Default is [const false].
+
+[lst_item "[option -scanorder] [arg string]"]
+
+This option is supported for reading only.
+[nl]
+Specify the scanline order of the input image.
+Possible values: [const TopDown] or [const BottomUp]. Default is [const TopDown].
+
+[lst_item "[option -gamma] [arg float]"]
+
+This option is supported for reading only.
+[nl]
+Specify a gamma correction to be applied when mapping
+16-bit input data to 8-bit image values.
+Default is [const 1.0].
+
+[lst_item "[option -min] [arg float]"]
+
+This option is supported for reading only.
+[nl]
+Specify the minimum pixel value to be used for mapping
+16-bit input data to 8-bit image values.
+Default is the minimum value found in the image data.
+
+[lst_item "[option -max] [arg float]"]
+
+This option is supported for reading only.
+[nl]
+Specify the maximum pixel value to be used for mapping
+16-bit input data to 8-bit image values.
+Default is the maximum value found in the image data.
+
+[lst_item "[option -ascii] [arg bool]"]
+
+This option is supported for writing only.
+If set to [const true], the file is written in PPM 8-bit ASCII format (P3).
+Default is [const false], i.e. write in PPM 8-bit binary format (P6).
+
+[list_end]
+
+[list_begin definitions]
+[include format-footer.inc]
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