tiling library
Tiling schemes and tile matrix sets (web mercator, global geodetic).
This libary exports a subset of package:geobase/geobase.dart.
Usage: import package:geobase/tiling.dart
Classes
- GeoTileMatrixSet
- A tile matrix set with conversions between tiles and geographic positions.
- GlobalGeodeticQuad
- "Global Geodetic Quad" tile matrix set ("World CRS84 Quad" for WGS 84).
- ScaledConverter
- A coordinate converter between geospatial positions and scaled coordinates.
- TileMatrixSet
- A tiling scheme represented as a set of tile matrices (grids).
- WebMercatorQuad
- "Web Mercator Quad" tile matrix set.
Enums
- CanvasOrigin
- The position of the origin in a canvas or a grid.
Constants
- earthCircumferenceWgs84 → const double
- The earth circumference in meters (from earth equatorial radius by WGS 84).
- earthRadiusWgs84 → const double
- The earth equatorial radius in meters as specified by WGS 84.
- maxLatitude → const double
- The maximum value for the geographic latitude.
- maxLatitudeWebMercator → const double
- The maximum value for the geographic latitude inside the Web Mercator projection coverage.
- maxLongitude → const double
- The maximum value for the geographic longitude.
- minLatitude → const double
- The minimum value for the geographic latitude.
- minLatitudeWebMercator → const double
- The minimum value for the geographic latitude inside the Web Mercator projection coverage.
- minLongitude → const double
- The minimum value for the geographic longitude.
- screenPPIbyOGC → const double
- OGC defines a screen pixel of 0.28 mm that approximates to 90.7 ppi.