On 2 December 2014 at 19:02, John Beard <[email protected]> wrote:
I have not yet worked out how best to draw elliptical arcs, though you > can always convert to a Bezier first and then draw by biarc > approximation. > > Yes, that was my plan, as I already have a nice bezier interpolation I can use (from the Haskell SVGPath package <https://hackage.haskell.org/package/SVGPath>). I was going to use this algorithm <http://www.spaceroots.org/documents/ellipse/elliptical-arc.pdf> but it is described using center-point notation so I worked on <https://github.com/kasbah/haskell-svg-arc-convert> the endpoint notation to center-point notation first of all. I’ll get back to it soon. Also attached is an ESD symbol, which I think turned out quite well. > That looks great! > This code is still a bit fragile, but the Bezier converter should be fairly > easy to integrate into your own scripts. > Yeah, most converters seem to have this problem and nothing currently available really works for me reliably so I want to make something more robust. I like Python but I think it's (weak) type system would make this task more difficult and less fun for me (thought it would allow for integrating into InkScape or Pcbnew which would be cool).
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