Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site mit-amt.MIT.EDU
Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!mit-amt!ralph
From: ralph@atrp (Ralph Vinciguerra)
Newsgroups: net.micro.amiga
Subject: Help: dpaint and printing
Message-ID: <156@mit-amt.MIT.EDU>
Date: Wed, 9-Apr-86 19:34:51 EST
Article-I.D.: mit-amt.156
Posted: Wed Apr  9 19:34:51 1986
Date-Received: Thu, 10-Apr-86 21:08:02 EST
Sender: uucp@mit-amt.MIT.EDU
Reply-To: ralph@atrp.UUCP (Ralph Vinciguerra)
Organization: MIT Cognitive Information Processing Group
Lines: 41
Keywords: dpaint,EA,print
Summary: pixel magic when printing ?

Dpaint....it is a very nice program but I'm trying to use it in a special
way and it's putting me through the wringer. I'm running it in hi resolution
with only one bit plane (invoke as "dpaint hi 1"). In this mode I can
create nice crisp figures for black and white documents, and the response
time of dpaint is much improved since it only has to write to one bit plane.

The Problem: if I try printing this image, some clever software (in AmigaDOS
and/or in dpaint) attempts to make the printed output fit exact dimensions
and maintain aspect ratio. The result is that I don't get a 1-to-1 reproduction
of the pixel image I created. Now this is fine for shaded and colored images
but I want to make a crisp diagram and I want the lines and characters to be
exactly like they are on the screen.

	Am I doing something wrong with respect to the preferences ?
I should also mention that I'm also down in the middle of the printer
driver examining all the printer parameters too. There seems to be some
kind of a calculation based on these numbers which causes the printing
to come out with repeated pixels to make the dimensions of the final image
come out right. I'm not really concerned as much with the final aspect
ratio. I just want a 1dot-to-1dot print of the screen.
I've tried alot of parameter combinations with varying success.
I can get either the horizontal or the vertical to work, but not together !

	If anyone either has experience with this or knows what I'm doing
wrong, your response would be appreciated. I suspect that I'm not the
only person using dpaint to create hi resolution line and text drawings.
Where is this magic being done ?  What calculation is it using ?
Is there a way around all this ?.....
------
	Oh, an additonal note: I got dpaint to run along with other
processes! In 1 bit plane mode there's enough memory around to send its screen
to the back and use the workbench ! I invoke dpaint as:
	1> run dpaint hi 1
It happily gets its own cli and starts up. This requires that you do
a modicum of disk swapping since you're running with workbench as the
boot disk (not dpaint as usual). Using the amiga-n and amiga-m keys
helps you figure out which disk it wants by bringing the screen with the
disk requestor to the front. See an earlier article on how to get dpaint
to use a different driver from the one on the dpaint disk. You can even
be printing and workbenching at the same time...but look out...there's
still not alot of memory around....