dv_geo_core library

Classes

AlbersProjection: Albers equal-area conic projection. Preserves area, commonly used for US maps.
EquirectangularProjection: Equirectangular (Plate Carrée) projection. Maps longitude and latitude linearly to x and y.
GeoJsonFeature: A GeoJSON Feature.
GeoJsonFeatureCollection: A GeoJSON FeatureCollection.
GeoJsonGeometry: GeoJSON types and parsing utilities. A GeoJSON geometry object.
GeoJsonGeometryCollection: A GeoJSON GeometryCollection.
GeoJsonLineString: A GeoJSON LineString geometry.
GeoJsonMultiLineString: A GeoJSON MultiLineString geometry.
GeoJsonMultiPoint: A GeoJSON MultiPoint geometry.
GeoJsonMultiPolygon: A GeoJSON MultiPolygon geometry.
GeoJsonPoint: A GeoJSON Point geometry.
GeoJsonPolygon: A GeoJSON Polygon geometry.
GeoPath: Generates path data from GeoJSON geometries using a projection.
MercatorProjection: Mercator projection. Preserves angles and shapes locally, but distorts areas near poles.
OrthographicProjection: Orthographic projection (globe view). Shows the Earth as it appears from space.
Projection: Base class for geographic projections.
TransverseMercatorProjection: Transverse Mercator projection.

clampLatitude(double lat) → double: Clamps a value to valid latitude range.
clampLongitude(double lon) → double: Clamps a value to valid longitude range.
geoAlbers({(double, double)? center, double scale = 1, Point? translate, double parallels0 = 29.5, double parallels1 = 45.5}) → AlbersProjection: Creates an Albers projection.
geoAlbersUsa() → AlbersProjection: Creates an Albers USA projection centered on the contiguous United States.
geoEquirectangular({(double, double)? center, double scale = 1, Point? translate}) → EquirectangularProjection: Creates an equirectangular projection.
geoMercator({(double, double)? center, double scale = 1, Point? translate}) → MercatorProjection: Creates a Mercator projection.
geoOrthographic({(double, double)? center, double scale = 1, Point? translate, (double, double, double)? rotate}) → OrthographicProjection: Creates an orthographic projection.
geoPath(Projection projection) → GeoPath: Creates a GeoPath generator.
geoTransverseMercator({(double, double)? center, double scale = 1, Point? translate}) → TransverseMercatorProjection: Creates a transverse Mercator projection.
parseGeoJson(Map<String, dynamic> json) → dynamic: Parses a GeoJSON object from a map.
toDegrees(double radians) → double: Converts radians to degrees.
toRadians(double degrees) → double: Converts degrees to radians.