feat: Add polar projection support to RasterReprojector#270
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espg wants to merge 4 commits intodevelopmentseed:mainfrom
Open
feat: Add polar projection support to RasterReprojector#270espg wants to merge 4 commits intodevelopmentseed:mainfrom
espg wants to merge 4 commits intodevelopmentseed:mainfrom
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Detect when a tile's output positions span the ±180° meridian and normalize longitudes to a continuous range (e.g., [170, 190] instead of [170, -170]). This prevents mesh triangles from spanning 340° of longitude and ensures correct GPU-side interpolation for tiles near the date line.
Detect tiles containing or near a geographic pole (|lat| > 75° with antimeridian crossing). Add a maxTriangles safety cap to run() to prevent infinite refinement near poles, where the extreme longitude variation can require many more triangles to converge. The existing antimeridian normalization handles the longitude wrapping for polar tiles — the mesh refines around the remaining discontinuity. deck.gl's GlobeView renders the resulting mesh correctly since projectPosition handles arbitrary (lng, lat) values.
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Ported from #266. Needed for default globe discussed on source-cooperative/source.coop#230.
Summary
RasterReprojectormaxTrianglesparameter torun()to cap mesh refinement for polar tiles where convergence is slow due to extreme longitude variation near the poleDepends on #269 — rebase onto
mainafter that merges so the diff only shows polar changes.Closes #172
Test plan
pnpm testinraster-reproject)