CellUnionBound: Tighten bound for Cell #251
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The CellUnionBound for a Cell can just be that cell. Previously, this was the bound for a cap, since that was copied from C++. C++ has fixed this in google3, and the fix will be released soon. Java already uses just the cell id for the bound: https://github.com/google/s2-geometry-library-java/blob/57151fc0f7fe543b75e9f743bf897e81928d5c3f/library/src/com/google/common/geometry/S2Cell.java#L537
rsned
approved these changes
Dec 22, 2025
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The CellUnionBound for a Cell can just be that cell. Previously, this was the bound for a cap, since that was copied from C++. C++ has fixed this in google3, and the fix will be released soon.
Java already uses just the cell id for the bound:
https://github.com/google/s2-geometry-library-java/blob/57151fc0f7fe543b75e9f743bf897e81928d5c3f/library/src/com/google/common/geometry/S2Cell.java#L537