kicad-developers team mailing list archive

[Marco Hess <marco.hess@xxxxxxxxxxxxxx>]

Hi Maurice,

The interesting issue then is that the procedure of 'simply' importing 
in LibreCad and then "Save As' DXF R12 as currently documented in the 
'pcbnew' manual did not fix the issue.

Other than 'redrawing' as you did, is there another 'fool proof' way 
that this could have worked that is worth putting in the documentation?

At this stage I don't fully understand as to why the save in R12 format 
did not fix it.

Marco

On 09-Sep-15 18:54, easyw wrote:
> Hi Marcos and Marco,
>
> please find attached the dxf that I did from scratch using 4 arcs in 
> LibreCAD
> I copied manually the path from palta2.dxf, then exported in dxf R12
> The result is fine in kicad and I get a closed path also for Edge cuts.
>
> in kicad there are 4 arcs
>   (gr_arc (start 178.564202 123.937945) (end 153.273203 83.107373) 
> (angle -26.04011298) (layer Edge.Cuts) (width 0.1))
>   (gr_arc (start 156.68577 88.642784) (end 162.837792 90.749678) 
> (angle -140.5586133) (layer Edge.Cuts) (width 0.1))
>   (gr_arc (start 196.246745 102.229265) (end 162.837792 90.749678) 
> (angle -22.2858684) (layer Edge.Cuts) (width 0.1))
>   (gr_arc (start 148.500893 105.004408) (end 137.915937 98.354967) 
> (angle -215.4739741) (layer Edge.Cuts) (width 0.1))
>
> If you search inside palta2.dxf you find POLYLINE that are not 
> supported by kicad
>
> attached a comparison of dxf files
>
> I suspect that the problem is when exporting dxf from FreeCAD...
> I had some trouble with a different board path exported from FreeCAD...
> In FreeCAD you cannot select which version of dxf you want to use, if 
> I remember correctly...
>
> Maurice
>
>
>
>
>
>
>
> On 09/09/2015 07.43, Marco Hess wrote:
> > Definitely a problem with the DXF importer I would say as the resulting
> > data in the PCB file are just  straight line segments:
> >
> >    (gr_line (start 42.68541 28.017695) (end 52.25 35.66) (layer
> > Edge.Cuts) (width 0.1))
> >    (gr_line (start 27.328145 43.265288) (end 42.68541 28.017695) (layer
> > Edge.Cuts) (width 0.1))
> >    (gr_line (start 50.392159 49.187096) (end 27.328145 43.265288) (layer
> > Edge.Cuts) (width 0.1))
> >    (gr_line (start 52.25 35.66) (end 50.392159 49.187096) (layer
> > Edge.Cuts) (width 0.1))
> >
> > Marco
> >
> > On 09-Sep-15 14:58, Marco Hess wrote:
> > > Hi Marcos,
> > >
> > > Apologies, but I did not see your original email where you said you
> > > tried the R12 format alreayd.
> > >
> > > I tried it as well and and it indeed seems to do something strange
> > > with just connecting the end points of the circles or something.
> > >
> > > Regards,
> > >
> > > Marco
> > >
> > > On 09-Sep-15 14:29, Marco Hess wrote:
> > > > KiCad DXF import for those kind of segments don't work very well. You
> > > > need to re-export the DXF in a DXF R12 format.
> > > >
> > > > You can do that easily by opening the DXF in LibreCAD and then
> > > > reexporting in R12 format.
> > > >
> > > > See http://docs.kicad-pcb.org/Pcbnew/Pcbnew.html#_creating_a_board
> > > >
> > > > Section 6.1.2 and 6.1.3.
> > > >
> > > > Cheers,
> > > >
> > > > Marco
> > > >
> > > >
> > > > On 09-Sep-15 14:24, Marcos Chaparro wrote:
> > > > >         Seems that is kind of Berzier Curve, not few arcs. Probably
> > > > >         that shape needs to
> > > > >
> > > > >     split to single arcs before import.
> > > > >
> > > > >
> > > > > Um, I don't know if its converted to a bezier curve, but I'm sure I
> > > > > made it from 4 arcs, see attached.
> > > > >
> > > > >
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> > > >
> > > > --
> > > > Marco Hess
> > > > Through IP Pty. Ltd. - AUSTRALIA
> > > > www.through-ip.com   |marco.hess@xxxxxxxxxxxxxx
> > > > p: +61 407 78 55 66 | f: +61 8 8121 6191
> > > >
> > > >
> > > > _______________________________________________
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> > >
> > >
> > >
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> >
> > --
> > Marco Hess
> > Through IP Pty. Ltd. - AUSTRALIA
> > www.through-ip.com   |marco.hess@xxxxxxxxxxxxxx
> > p: +61 407 78 55 66 | f: +61 8 8121 6191
> >
> >
> >
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>
>
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--
Marco Hess
Through IP Pty. Ltd. - AUSTRALIA
www.through-ip.com  | marco.hess@xxxxxxxxxxxxxx
p: +61 407 78 55 66 | f: +61 8 8121 6191