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Re: [PATCH] ledger lines

From: Rune Zedeler
Subject: Re: [PATCH] ledger lines
Date: Fri, 29 Mar 2002 01:40:44 +0200 (MET DST)
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Citat Juergen Reuter <address@hidden>:

> > You can also simulate the effect that you want, by
> > using a negative padding (of - blot/2) when combining the molecules.
> This is actually an argument on my side: You can simulate the effect
> that
> you want with my rounded box by reducing the dimensions by -blot/2. 

Well, first of all the dimensions (size) should be reduced by blot, not just by 
blot/2. Ofcourse this is done by moving the edges of the box blot/2 in opposite 
directions, alright.
Well, but this (your) approach does not handle situations where the dimensions 
are less than blot-diameter in which case your routine would be called with a 
negative size-argument - and hopefully nobody expects that the routine should 
cope in a reasonable way with that.
I consider it easier to take special care of small values in the box-drawing 
routine (i.e. by reducing blot-diameter) - and hence I (still) prefer the "old" 
(exclusive) way of blotting.

> This
> is in so far an advantage, as the user of rounded box is responsible
> for
> proper handling of the dimensions rather than the drawing routine
> internally doing some magic max/min calculations which, I think, are
> necessary if the box width or length is below blotdiameter.

We agree that your approach leaves the special cases to the user while HanWen's 
approach leave them to the boxing-routine.
We don't agree which is the best...
I just think that leaving it to the user results in the same min-max-code being 
copy-pasted all over the source rather than leaving it in the same place (the 


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