3D MCAD will generally represent even simple circular arcs as B-Splines, so it it likely that your arcs were written to DXF as B-Splines or Bezier curves. Use librecad to draw the arcs instead; 2D CADs will generally represent conics as a Euclidean formulation on a Cartesian plane. Re-exporting will not fix the issue because it would be very unusual for a 2D CAD to analyze a B-Spline and convert it to a Euclidean conic.
I can see a use for polynomial splines and B-splines as graphical objects in KiCad (including the board outline) but this requires some thought on how we represent such objects without having a negative impact on the code or file format. Such a feature would allow greater freedom in the design of the board outline (a useful feature for some commercial work) and would also allow us to represent odd items from other ECADs such as the elliptical arcs of Altium and gEda. While representing an actual ellipse using the typical Euclidian formulation on a Cartesian plane is a nightmare, a B-Spline representation is actually fairly easy to manipulate. Of course a graphical editor for polynomial and rational B-splines would be a challenge to develop, but it's been done before. - Cirilo On Wed, Sep 9, 2015 at 2:54 PM, Marcos Chaparro <nitrous...@gmail.com> 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. > > > _______________________________________________ > Mailing list: https://launchpad.net/~kicad-developers > Post to : email@example.com > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp > >
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