Circle Arcs

[Kei Ishii]

Hi Vic,

I apologize for not reading precisely what you wanted, I assumed you  
wanted a "pie shape"...

Your best bet might indeed be the arc script mentioned by John Oram  
which (OG Pro 4.2.3rc1)
appears to do what you want. Here's the direct link to the arc page:
<http://www.petermcm.dircon.co.uk/software/og_arc/index.html>

I installed it, Upon running the script, I was prompted for the size  
of the arc angle,
then the radius of the arc, and got a nice arc.

Sorry again, Kei.



On 25.04.2008, at 17:49, Vic DiFranco wrote:
> Hello Kei and Joel,
>
> 	I was the one who originally submitted the question on circle arcs.
>
> 	I tried to do what Kei Ishii suggested, but not successfully. I  
> have OmniGraffle Pro ver 4.2.1. My computer is a Macintosh Powerbook  
> G4 with OS 10.4.11.
>
> 	I created a 90 deg arc, using the built-in tool in the Styles  
> Inspector (Lines and Shapes). I turned off the Shadow and Fill, so  
> there is only a 90 deg arc. In my example, the object measures 2 in  
> x 2 in.
>
> 	I then duplicated the object (Edit-Duplicate), and rotated the copy  
> 45 deg in the Properties Inspector (Geometry). As best I could, I  
> overlapped the two objects over the 45 deg common segment. Actually,  
> they don't overlap exactly - there must be a minor error introduced  
> with the rotation.
>
> 	But then, selecting both objects and Edit-Shapes-Subtract Shapes, I  
> get as a result a custom shape which is a segment, rather than an  
> arc. That is, the two radii are drawn to the arc. Also, there is a  
> slight error at the "center", where the radii meet. They don't meet  
> exactly.
>
> 	All-in-all, a lot of work for less than ideal results.
>
> 	Joel, I think a future upgrade should add the ability to create  
> arcs, of any degree. This seems to be a fundamental need for any  
> drawing program, and I'm surprised that a fine program like  
> OmniGraffle doesn't include it.
>
> 	Best regards,
> 	Vic DiFranco
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