Halftone Display for Sun 2

[bukys at rochester.UUCP]

I am posting our "iffsunshow" program to net.sources.
It pops up a suntools window of exactly the size of the image,
and then halftones the image into it.  All the resizing features
work right.  Sorry, no automatic rescaling.

Since you out there won't have an "iff" library, you'll have to
write a routine to read an image header returning various items
such as image size, and a routine to get a row of the image.
The halftone code will work with images with various bits-per-pixel,
from 1 to (maybe) 24, if your input routines support it.

This was originally written for suntools on a sun-2 under release 2.1 or 2.2.
We just tried it on a sun-3 under release 3.2 and it works there too.

It produces an image quite pleasant to look at.

Liudvikas Bukys
<bukys at rochester.arpa> soon to be <bukys at cs.rochester.edu>
<rochester!bukys> via allegra or seismo