Clamp vector geometry latitudes for Mercator projection#266
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Clamp vector geometry latitudes for Mercator projection#266
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The raster extent reprojection path already clamped latitudes to ±85.06° for Mercator targets, but the vector geometry reprojection path had no clamping. This caused near-pole vertices (e.g. Antarctica at ~-90°) to produce extreme Y values in Web Mercator, making Antarctica appear huge. Extract is_geographic(), is_mercator(), and MERCATOR_LAT_LIMIT to module-level shared helpers and add latitude clamping via map_coords on vector geometries before Mercator projection. Relates to #186
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Superseded by #272, which generalizes this to all CRS area-of-use bounds. |
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Summary
ReprojectGeometryJob) had no clamping — causing near-pole vertices (e.g. Antarctica at ~-90°) to produce extreme Y values in Web Mercator, making Antarctica appear enormousis_geographic(),is_mercator(), andMERCATOR_LAT_LIMITto module-level shared helpers so both raster and vector paths use the same logicmap_coordson vector geometries before Mercator projection, clamping Y coordinates to ±85.06° (the defined area of use for EPSG:3857)Relates to #186
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