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JtsGeometry.unwrapDateline creates an invalid polygon in some cases #186

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tadrinth opened this issue May 21, 2020 · 0 comments
Open

JtsGeometry.unwrapDateline creates an invalid polygon in some cases #186

tadrinth opened this issue May 21, 2020 · 0 comments

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@tadrinth
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Start with this Geometry:
POLYGON ((-180 -24.5271348, -180 0.9447814, 180 0.9447814, 180 -24.5271348, -180 -24.5271348))

Pass it to a JtsGeometry, and when unwrapDateline is called during initialization, it modifies to the following:

POLYGON ((180 -24.5271348, 180 0.9447814, 180 0.9447814, 180 -24.5271348, 180 -24.5271348))

That's not a valid polygon; note that all the -180 longitudes are now 180, so all of those points are on a straight line.
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@tadrinth