Additional coordinate stability considerations #898
Merged
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This builds on #897. The coordinate stability considerations addressed there also apply to building grids around sets of points, including destination opportunities and street vertices in transportation networks. Due to conversion back and forth from WGS84 to web Mercator, it is possible hat a grid made to be completely tight around the set of points may not actually contain some of the points.
This PR adds
WebMercatorExtents.forBufferedWgsEnvelope
which complementsforTrimmedWgsEnvelope
to handle this case.This PR is a draft until the basic WGS-Mercator PR is merged, at which point this PR's base can be changed to dev.