Projection class abstract

This class provides the calculation from Lat/Lon to pixelY/pixelX and vice versa

Implementers

Constructors

Projection()

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

boundingBoxOfTile(Tile tile) → BoundingBox
boundingBoxOfTiles(Tile upperLeft, Tile lowerRight) → BoundingBox
latitudeToTileY(double latitude) → int
Converts a latitude coordinate (in degrees) to a tile Y number at a certain zoom level.
longitudeToTileX(double longitude) → int
Converts a longitude coordinate (in degrees) to the tile X number at a certain zoom level.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
tileXToLongitude(int tileX) → double
Converts a tile X number at a certain zoom level to a longitude coordinate.
tileYToLatitude(int tileY) → double
////////////////////////////////////////////////////////////////////////// Converts a tile Y number at a certain zoom level to a latitude coordinate.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Properties

EARTH_CIRCUMFERENCE → double
The circumference of the earth at the equator in meters.
final
EQUATORIAL_RADIUS → double
The equatorial radius as defined by the WGS84 ellipsoid. WGS84 is the reference coordinate system used by the Global Positioning System.
final
INVERSE_FLATTENING → double
The flattening factor of the earth's ellipsoid is required for distance computation.
final
LATITUDE_MAX → double
Maximum possible latitude coordinate of the map.
final
LATITUDE_MIN → double
Minimum possible latitude coordinate of the map.
final
LONGITUDE_MAX → double
Polar radius in meter (WGS84 ellipsoid)
final
LONGITUDE_MIN → double
final
POLAR_RADIUS → double
Polar radius of earth is required for distance computation.
final

Static Methods

degToRadian(double deg) → double
Converts degree to radian
destinationPoint(ILatLong start, double distance, double bearing) → ILatLong
Returns the destination point from this point having travelled the given distance on the given initial bearing (bearing normally varies around path followed).
distance(ILatLong p1, ILatLong p2) → double
Calculates distance with Haversine algorithm.
latitudeDistance(int meters) → double
Calculates the amount of degrees of latitude for a given distance in meters.
longitudeDistance(int meters, double latitude) → double
Calculates the amount of degrees of longitude for a given distance in meters.
offset(ILatLong from, double distanceInMeter, double bearing) → ILatLong
Returns a destination point based on the given distance and bearing
radianToDeg(double rad) → double
Radian to degree
startBearing(ILatLong p1, ILatLong p2) → double
calculates the startbearing in degrees of the distance from p1 to p2 see https://www.movable-type.co.uk/scripts/latlong.html
vincentyDistance(ILatLong latLong1, ILatLong latLong2) → double
Calculates geodetic distance between two LatLongs using Vincenty inverse formula for ellipsoids. This is very accurate but consumes more resources and time than the sphericalDistance method.