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Posted to dev@lucene.apache.org by "Ignacio Vera (JIRA)" <ji...@apache.org> on 2017/11/25 09:40:01 UTC

[jira] [Created] (LUCENE-8066) Another aproach to Exact circle

Ignacio Vera created LUCENE-8066:
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             Summary: Another aproach to Exact circle
                 Key: LUCENE-8066
                 URL: https://issues.apache.org/jira/browse/LUCENE-8066
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Ignacio Vera


Hi [~daddywri],

I was thinking in the limitation of convexity for circle planes and I worked out another approach that overcome this limitation. There is a condition, circle lanes must contain the center of the circle which is probably always true for planets like WGS84 which are not too far from the sphere.

The idea is create a short of polygon for every slice using the center of the circle (like an orange) and therefore you can treat them separately. I attached what I developed, it seems to pass all tests regardless of the radius.

Let me know what you think and if I am missing something. 



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