Re: gEDA-user: help with pcb dsn plugin

["Bert Timmerman" <bert.timmerman@xxxxxxxxx>]

Hi all, 

> -----Original Message-----
> From: geda-user-bounces@xxxxxxxxxxxxxx 
> [mailto:geda-user-bounces@xxxxxxxxxxxxxx] On Behalf Of Peter Clifton
> Sent: Sunday, September 18, 2011 12:16 AM
> To: geda-user@xxxxxxxxxxxxxx
> Subject: Re: gEDA-user: help with pcb dsn plugin
> 
> On Fri, 2011-09-16 at 11:58 -0700, Jared Casper wrote:
> 
> > -- extensive style changes for my own sanity. There was 
> inconsistent 
> > style throughout (like all of pcb's code), so I chose the one I 
> > personally like best (linux kernel style with indent of 4 
> instead of 
> > 8). :)
> 
> PCB mostly has a consistent style, and we won't apply patches 
> which don't follow that.
> 
> Two space indents,
> 
> if (test)
>   {
>     statements (like, this);
>   }
> else
>   {
>     even_if_they_ARE_horrid ();
>   }
> 

This is the next patch on my todo list.

Is the above the exact syntax ?


> A lot of the code then substitutes 8 spaces for a tab 
> character (at the beginnings of lines), but that is just the 
> work of the devil IMO ;).
> 
> > -- Brought all the handling of coordinates up to date with the new 
> > Coord type and nm precision. There were a few places where 
> dimensions 
> > were being rounded to the nearest mil, etc. which would've been bad 
> > for metric based boards. This has all been taken care of 
> and appears 
> > to be working in some simple tests. DSN files are now in mm 
> units with 
> > nm precision.
> 
> Nice.
> 
> > -- Removed the somewhat dubious code for finding the 
> rotation of the 
> > part copied over from bom.c. We don't have the original footprint 
> > anyway, so the rotation was not being used. The code is 
> still there in 
> > bom.c if it is needed in the future.
> 
> Good idea.
> 
> [snip]
> 
> > Some things still not quite handled:
> > 
> > -- Existing polygons on the pcb don't make it into the dsn.
> 
> If you need any pointers on that, give me a shout.
> 
> > -- As noted in the bug report, there is no copyright/license notice 
> > from the original authors.  Maybe some legal issues with 
> the Specctra 
> > file format as well (I doubt it though, the text-based file format 
> > would be trivial to reverse-engineer even without  the spec).
> 
> You might need to try and contact the original author, but 
> I'd personally not worry about implementing compatibility 
> with the file-format. The only issue we might have is what we 
> call it - Specctra might be a trademarked name.
> 
> 

I contacted Josh Jordan (PM), see the copyright notice and license stanza in
patch 0003 on LP.

> > -- Probably some other stuff.
> > 
> > It appears to be working with some early tests, and 
> freerouting.net is 
> > pretty awesome.
> 

I still have issues with examples/LED.pcb getting imported without tweaking,
the dsn exporter should work straight "out-of-the-box" without massaging
quotes and other tweaks.

> Great!
> 
> Best wishes,
> 
> --
> Peter Clifton
> 
> Electrical Engineering Division,
> Engineering Department,
> University of Cambridge,
> 9, JJ Thomson Avenue,
> Cambridge
> CB3 0FA
> 
> Tel: +44 (0)7729 980173 - (No signal in the lab!)
> Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)
> 

Kind regards,

Bert Timmerman.



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