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Re: Snipping the ears

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On Tuesday, August 13, 2019 at 6:03:58 PM UTC-5, luser droog wrote:

> Mostly there. Everything works. Ear detection seems to be working just
> by checking two vectors from each curve, the "control vector" that goes
> from the first control point to the second, and the "transit vector"
> that goes straight from the first point to the final point. If the 
> control vector is bigger than the transit vector, that's an "inverted
> curve" by my definition. And if the angular difference between the 
> control vector and the transit vector is more than about 80 degrees,
> then that's either a thorny triangle or a twisted curve if it's even
> bigger, closer to 180 degrees. 
> 
> When drawing an offset curve 10 points away, I get 2 ears which matches
> the visual results. At 5 points away, I get this "ear report":
> 
>   [(00000000000000011000000000000000000000000) (000000000000000)]
> 
> which matches the visual results. At only 2 points away, no ears are 
> found, which also looks right.
> 
> So, now for the chore of actually snipping the ears. I think the same
> PostScript trick of using a dict as an associative array will help.
> I can associate each string of the ear report with the subpath array
> it belongs to. Then I can use a plain 'forall' loop instead of a weird
> 'for' loop to access parallel arrays.
> 
> I expect to have some pretty output soon. Wish me luck!
> 

Sigh. Same story again. It all works, but it doesn't "work". I tried
snipping the ears by replacing the subsequence of curves with a single
curve. And I tried grabbing earlier and/or later curves as well. 

I think it might work if I use 2 curves. I have a sketch of how to
do it, but nothing typed in yet.

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Snipping the ears luser droog <luser.droog@gmail.com> - 2019-07-20 13:18 -0700
  Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-07-20 16:51 -0700
    Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-07-22 00:47 -0700
      Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-07-24 00:38 -0700
        Re: Snipping the ears Mark Carroll <mtbc@bcs.org> - 2019-07-24 08:50 +0100
          Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-07-29 23:18 -0700
            Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-08-06 22:05 -0700
              Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-08-08 00:22 -0700
                Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-08-11 13:33 -0700
                Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-08-13 16:03 -0700
                Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-08-19 22:46 -0700
                Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-08-21 23:44 -0700
  Re: Snipping the ears jdaw1 <jdawiseman@gmail.com> - 2019-10-10 15:07 -0700
    Re: Snipping the ears jdaw1 <jdawiseman@gmail.com> - 2019-10-10 15:09 -0700
    Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-10-13 01:39 -0700
      Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2019-10-13 01:51 -0700
        Re: Snipping the ears jdaw1 <jdawiseman@gmail.com> - 2020-06-04 03:15 -0700
          Re: Snipping the ears luser droog <luser.droog@gmail.com> - 2020-07-09 10:31 -0700
          Re: Snipping the ears jdaw1 <jdawiseman@gmail.com> - 2021-02-13 09:51 -0800

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