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From:	Kai-Martin Knaak <knaak AT iqo DOT uni-hannover DOT de>
Subject:	Re: [geda-user] Print layout hangs - followup
Date:	Wed, 04 Feb 2015 04:45:22 +0100
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Girvin Herr wrote:

> Below is a snippet of the .pcb file definition for one of the instances
> of my terminal footprint.

I pasted the snippet into a footprint, inserted it in a layout and tried 
to print. The postscript output failed exactly as you reported.

 
> Element["" "E-200x095.fp" "E4" "unknown" 100000 30000 15000 -5000 0 100
> ""]
> 
> (
> 
>      Pin[0 0 20000 2000 20600 9500 "1" "1" ""]
> 
>      ElementArc [0 0 11000 11000 270 90 1000]
> 
>      ElementArc [0 0 11000 11000 0 90 1000]
> 
>      ElementArc [0 0 11000 11000 90 90 1000]
> 
>      ElementArc [11000 0 0 0 0 90 1000]
                           ^^^
This statement triggers the failure. If I remove it, the layout prints 
fine. The third and fourth parameter of ElementArc represent the height 
and width of the arc. 
	ElementArc [X Y Width Height StartAngle DeltaAngle Thickness]
 (from http://pcb.geda-project.org/pcb-cvs/pcb.html#ElementArc-syntax )

Width and height at exactly 0 probably results in some kind of numerical 
exception. Think division by zero...

The arc statement can represent a full circle. Just put 360 as DeltaAngle 
parameter:
      ElementArc [0 0 11000 11000 0 360 1000]

By the way, I very much recommend Bert Timmermanns patch for improved arc 
creation in the GUI. It provides support for angles other than 90°. Would 
be happy to see this patch applied to the main branch of pcb.

---<)kaimartin(>---
-- 
Kai-Martin Knaak                                  tel: +49-511-762-2895
Universität Hannover, Inst. für Quantenoptik      fax: +49-511-762-2211	
Welfengarten 1, 30167 Hannover           http://www.iqo.uni-hannover.de
GPG key:    http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get

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