Graphics Files on Linux - Revision history

AtariWikiSysop: 6 revisions imported

2018-06-03T22:52:33Z

6 revisions imported

Wongck at 12:05, 11 October 2011

2011-10-11T12:05:16Z

Daeghnao at 13:14, 22 March 2006

2006-03-22T13:14:17Z

Daeghnao at 21:23, 21 March 2006

2006-03-21T21:23:29Z

Daeghnao at 13:58, 15 March 2006

2006-03-15T13:58:50Z

Daeghnao at 13:55, 15 March 2006

2006-03-15T13:55:53Z

Daeghnao at 10:55, 14 March 2006

2006-03-14T10:55:47Z

New page

Note: I haven't tested any of this stuff out yet, it's all from online documentation. I want to play with the pnm/pbm/ppm stuff a little more and explain how they work.

Graphics files on Linux come in roughly three flavours:

== Screen-size Bitmap ==

Use the netpbm package to convert bitmap files. It supports the following formats commonly found on the Atari:

<ul>
<li>PI1, PC1, PI3</li>
<li>NEO</li>
<li>IFF (ILBM)</li>
</ul>

It converts to a dedicated portable format (ppm), from which most other formats can be produced, such as GIF or BMP.

For other formats such as Spectrum 512, there is a freeware program called XnView which is also available on an astonishing number of platforms and supports a vast array of file types.

One final possibility is to use an emulator to view the file using an appropriate Atari ST application, and then use a screenshot facility (either within the emulator or from tools such as xv or the GIMP) to grab the image.

== Variable-size Bitmap ==

There are several file types that contain bitmaps that are not complete screens:

<ul>
<li>IMG</li>
</ul>

The GEM IMG format stores a bitmap. It can be converted using gemtopnm to create a pnm file.

<ul>
<li>RSC
</li>
</ul>

RSC files can contain icons. I don't think there's currently a way to work with these files outside of GEM.

For many of the graphics formats, there are plugins available for the GIMP. See [http://registry.gimp.org/list?category=7] for a complete list.

== Vector Graphics ==

There is a file format listed in the catalogues as "GEM: Ventura Publisher". I have no further information on this.

There may be some CAD files or outline font files that can be considered as vector formats.

← Older revision		Revision as of 12:05, 11 October 2011
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	There may be some CAD files or outline font files that can be considered as vector formats.		There may be some CAD files or outline font files that can be considered as vector formats.
		+	<br />
		+	<br />
		+	<br />
		+	[[Category:Data Formats]]

← Older revision		Revision as of 13:14, 22 March 2006
Line 1:		Line 1:
−	~~Note: I haven't tested any of this stuff out yet, it's all from online documentation. I want to play with the pnm/pbm/ppm stuff a little more and explain how they work.~~
−
	Most format conversion utilities on Linux are part of the netpbm package. It uses its own portable file types, designed to be easily decoded, as follows:		Most format conversion utilities on Linux are part of the netpbm package. It uses its own portable file types, designed to be easily decoded, as follows:

@@ Line 44: / Line 44: @@
 </ul>
-The GEM IMG format stores a bitmap.  It can be converted using gemtopnm to create a pnm file.
+The GEM IMG format stores a bitmap.  It can be converted using gemtopnm to create a pbm or ppm file (depending on the number of planes stored in the IMG).
 <ul>

← Older revision	Revision as of 22:52, 3 June 2018
(No difference)

@@ Line 27: / Line 27: @@
 <li>PI1, PC1, PI3</li>
 <li>NEO</li>
 <li>IFF (ILBM)</li>
 </ul>
@@ Line 32: / Line 33: @@
 It converts to a dedicated portable format (ppm), from which most other formats can be produced, such as GIF or BMP.
-For other formats such as Spectrum 512, there is a freeware program called XnView which is also available on an astonishing number of platforms and supports a vast array of file types.
+There is also a freeware program called XnView which is available for Linux (among other platforms) and supports a vast array of file types.
 One final possibility is to use an emulator to view the file using an appropriate Atari ST application, and then use a screenshot facility (either within the emulator or from tools such as xv or the GIMP) to grab the image.

@@ Line 1: / Line 1: @@
 Note: I haven't tested any of this stuff out yet, it's all from online documentation.  I want to play with the pnm/pbm/ppm stuff a little more and explain how they work.
-Graphics files on Linux come in roughly three flavours:
+Most format conversion utilities on Linux are part of the netpbm package.  It uses its own portable file types, designed to be easily decoded, as follows:
 == Screen-size Bitmap ==
@@ Line 36: / Line 53: @@
 RSC files can contain icons.  I don't think there's currently a way to work with these files outside of GEM.
 == Vector Graphics ==