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Multithreading, better polygons, smaller memory footprint, and other improvements

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@e-n-f e-n-f released this 29 Oct 18:34
· 1316 commits to master since this release
v1.3.0
0ff0bf1
  • Tile generation is multithreaded to take advantage of multiple CPUs
  • More compact data representation reduces memory usage and improves speed
  • Polygon clipping uses Clipper
    and makes sure interior and exterior rings are distinguished by winding order
  • Individual GeoJSON features can specify their own minzoom and maxzoom
  • New tile-join utility can add new properties from a CSV file to an existing tileset
  • Feature coalescing, line-reversing, and reordering by attribute are now options, not defaults
  • Output of decode utility is now in GeoJSON format
  • Tile generation with a minzoom spends less time on unused lower zoom levels
  • Bare geometries without a Feature wrapper are accepted
  • Default tile resolution is 4096 units at all zooms since renderers assume it
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