Release v3.7.0

[3.7.0] - 2020-09-28

Added

• Area and haversine distance functions (#377):
  • cellAreaRads2
  • cellAreaKm2
  • cellAreaM2
  • pointDistRads
  • pointDistKm
  • pointDistM
  • exactEdgeLengthRads
  • exactEdgeLengthKm
  • exactEdgeLengthM
• Refactor getH3UnidirectionalEdgeBoundary for accuracy at small resolutions. (#391)
  • Speeds up getH3UnidirectionalEdgeBoundary by about 3x.
  • Implement core logic for future vertex mode.

Fixed

• Fixed building the library with custom memory allocation functions on Mac OSX. (#362)
• The installed H3 CMake target should have include directories specified. (#381)

Changed

• Tests now use bash on Windows. (#381)

Release v3.6.4

[3.6.4] - 2020-06-19

Added

• H3_MEMORY_PREFIX CMake option for replacing the memory management functions used in H3. (#317)
• Support for building Debian packages of H3. (#352)

Fixed

• Removed duplicate include statements. (#333)
• Fixed macro H3_DIGIT_MASK_NEGATIVE. (#329)

Changed

• Again implement new polyfill algorithm. (#313)

Release 3.6.3

[3.6.3] - 2020-01-21

Fixed

• compact detects and fails on cases with duplicated input indexes. (#299)

Changed

• h3IsValid returns false for indexes that have non-zero reserved bits. (#300)
• h3IsValid and h3UnidirectionalEdgeIsValid return false for indexes with the high bit set. (#300)

Release 3.6.2

[3.6.2] - 2019-12-9

• Revert new polyfill algorithm until reported issues are fixed. (#293)

Release 3.6.1

[3.6.1] - 2019-11-11

Fixed

• compact handles zero length input correctly. (#278)
• bboxHexRadius scaling factor adjusted to guarantee containment for polyfill. (#279)
• polyfill new algorithm for up to 3x perf boost. (#282)
• Fix CMake targets for KML generation. (#285)

Release 3.6.0

[3.6.0] - 2019-08-12

Added

• h3ToCenterChild function to find center child at given resolution (#267)
• getPentagonIndexes (and pentagonIndexCount) function to find pentagons at given resolution (#267)

Fixed

• Fix bounds check for local IJ coordinates (#271)

Release 3.5.0

[3.5.0] - 2019-07-22

Added

• CMake options for excluding filter applications or benchmarks from the build. (#247)
• h3GetFaces function to find icosahedron faces for an index, and helper function maxFaceCount (#253)

Changed

• Argument parsing for all filter applications is more flexible. (#238)

Fixed

• Fix printing program name in h3ToHier error messages. (#254)

Release 3.4.4

[3.4.4] - 2019-05-30

Changed

• Local coordinate spaces cannot cross more than one icosahedron edge. (#234)
• All dynamic internal memory allocations happen on the heap instead of the stack. (#235)
• Argument parsing for h3ToGeo, geoToH3, and h3ToGeoBoundary is more flexible. (#227)

Release 3.4.3

[3.4.3] - 2019-05-02

Added

• localIjToH3 filter application (#222)
• An option to print distances in the kRing filter application (#222)

Changed

• Arguments parsing for kRing filter application is more flexible. (#224)

Fixed

• benchmarkPolyfill allocates its memory on the heap (#198)
• Fixed constraints of vertex longitudes (#213)
• Zero only input to uncompact does not produce an error (#223)

Release 3.4.2

[3.4.2] - 2019-02-21

Changed

• binding-functions build target generates an ASCII file on Windows (#193)