PNMImport.st
------------

Import: XBM, PBM, PGM, PPM, ST code, BOSS
Export: XBM, PBM, ST code, BOSS

Methods
-------
Image class>import
	readPNMFile: PBM/PGM/PPM
	readFile:
	readBOSS:
Image >export
	writeFile:
	writeBOSS:
Image >utilities
	open
	inspect
Depth1Image class>import
	readPNMFile: (PBM)
	readXBMFile:
Depth1Image >export
	writePBMFile:
	writeXBMFile:
Depth8Image class>import
	readPNMFile: (PGM)
Depth24Image class>import
	readPNMFile: (PPM)

Comment
-------
The method readPNMFile recognizes if the bitmap is of type PBM, PGM or PNM.
It calls the appropiate methods of an DepthNImage subclass.
Then the bitmap is rendered to the current palette.
If you don't like it to be rendered then you have to call the method
in the subclass yourself.
Afterwards you are able to save the bitmap as Smalltalk Code or BOSS file.

Don't ask me for GIF, TIFF or PCX Import because they are all compressed binary
formats which take an enourmous amount of time to decompress in pure
Smalltalk and public decompression procedures are available in C.

BTW: I don't use Smalltalk anymore in my new position, but reports are
that PMNImport even works on VisualWorks.

ftp://ftp.st.cs.uiuc.edu/pub/MANCHESTER/misc/PNMImport/
ftp://mushroom.cs.man.ac.uk/

"Frerk Meyer" <frerk@educat.hu-berlin.de> 1.12.1994