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Subject: [ggl] Understanding get_turns for linestring/polygon overlay
From: Barend Gehrels (barend)
Date: 2011-04-15 17:25:00

> I think we need to check for and throw an excpetion for inputs that
> violate preconditions, otherwise the users will be frequently
> reporting failed test cases that are invalid. Is that planned for
> the release?

No, it is not planned for this release.

The intersects I mentioned is not enough: self-tangencies will report a
true there, but the polygon is still valid then. So some more analyses
on the turn-info has to be done in those cases. But the get_turns
function earlier mailed about today would give that.

Regards, Barend

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