Happy Canada Day! 🇨🇦
The 3.11.0 release of GEOS is now available to download at
http://libgeos.org/usage/download/
This release includes new features for building "concave hulls" for both point
and polygon input. For polygon input, the hull will be guaranteed to not cross
into the interiors of the input polygons.
The line merger has been enhanced to support a mode that only merges lines
which share orientation.
The offset curve algorithm has been updated to be more reliable for different
kinds of semi-degenerate inputs, and may output different curves than the
previous implementation, for those kinds of inputs. For "normal" inputs, the
results should look very much like the old implementation.
As usual, numerous bugs have been fixed, and a few performance improvements
discovered and implemented.
- New things:
- OffsetCurve (GH-530, Paul Ramsey/Martin Davis)
- ConcaveHull (GH-549, Paul Ramsey/Martin Davis)
- PolygonHull (GH-603, Paul Ramsey/Martin Davis)
- LineMerger directed option (GH-597, Sergei Sh)
- CAPI: GEOSHilbertCode (GH-556, Brendan Ward)
- CAPI: GEOSGeom_createRectangle (GH-558, Brendan Ward)
- CAPI: GEOSGeom_transformXY (GH-563, Dan Baston/Brendan Ward)
- CAPI: GEOSRemoveRepeatedPoints (GH-599, Paul Ramsey)
- CAPI: GEOSLineMergeDirected (GH-597, Sergei Sh)
- CAPI: setFixStructure for WKB/WKT readers to automatically repair
structural errors in the input (GH-639, Paul Ramsey)
- Fixes/Improvements:
- Fix unaryUnion to avoid segfault with empty polygon (GH-501, Mike Taves)
- Fix SnapRoundingNoder to use tolerance in noding; also fixes
GeometryPrecisionReducer (GH-504, Sergei)
- Allow direct setting of grid size (GH-513, Martin Davis)
- Allow GEOS to be used as a CMake subproject (GH-518, Robert Coup)
- Remove .inl inline files in favour of header declaration (GH-543, Paul
Ramsey)
- Add SnappingNoder seeding (Martin Davis)
- Add OverlayNG area check heuristic (JTS-812, Paul Ramsey)
- Fix RelateOp (and intersects predicate) for lines with intersections very
near boundary (GH-570, Martin Davis)
- Fix IsValidOp to handle repeated node points (JTS-845, Martin Davis)
- Fix IsSimpleOp to handle closed LineStrings with repeated endpoints
(JTS-851, Martin Davis)
- Fix LengthIndexedLine (via LengthLocationMap fix) (JTS-859, Martin Davis)
- Fix PolygonHoleJoiner (JTS-862, Martin Davis)
- Improve `test_geos_unit` application error checking and reporting
- Fix MinimumDiameter getMinimumRectangle for flat input (JTS-875, Martin
Davis)
- Fix BufferOp inverted ring check (JTS-878, Martin Davis)
- Fix OverlayNG geomunion to avoid lines in result (Martin Davis)
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