Path: utzoo!attcan!uunet!zaphod.mps.ohio-state.edu!usc!apple!gateway.qm.apple.com!sean_parent.snarkmail_l_z
From: sean_parent.snarkmail_l_z@gateway.qm.apple.com (Sean Parent)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Problems with SetLineWidth
Message-ID: <11125@goofy.Apple.COM>
Date: 6 Nov 90 00:54:39 GMT
References: <1990Nov5.203354.14090@wam.umd.edu>
Sender: usenet@Apple.COM
Organization: Apple Computer, Inc.
Lines: 21

In article <1990Nov5.203354.14090@wam.umd.edu> nebel@wam.umd.edu (Chris D. 
Nebel) writes:
> I'm having extreme problems with the SetLineWidth piccomment.  Though the
> tech notes claim otherwise, the scaling factor I send seems to be 
cumulative.
> I.e., if I send several SetLineWidth(1/2), PenSize(1, 1) Line sequences 
in
> a row (which should give a series of 1/2 point lines), I actually get a
> set of progressively thinner lines.

The SetLineWidth comment would be better named 
MultiplyPenScaleFactorByRatio since what you describe is exactly what it 
does. There is one problem with this. The LaserWriter SC driver also 
implements the SetLineWidth comment only it really sets the pen scale 
factor (instead of multiplying by the scale factor). I do not know of any 
way to work around this short of special casing for the LaserWriter SC 
(any new drivers under the new printing architecture will multiply the pen 
scale factor by the ratio). 

Sean Parent
"Quality unattainable in a reasonable amount of time."