Projection Class Reference


                    
                    
                    latitudeMax

Maximum supported latitude value.

Swift

public static let latitudeMax: CLLocationDegrees


                    
                    
                    latitudeMin

Minimum supported latitude value.

Swift

public static let latitudeMin: CLLocationDegrees


                    
                    
                    latitudeRange

Valid mercator latitude range.

Swift

public static let latitudeRange: (ClosedRange<CLLocationDegrees>)


                    
                    
                    metersPerPoint(for:zoom:)

Calculate distance spanned by one pixel at the specified latitude and zoom level.

Swift

public static func metersPerPoint(for latitude: CLLocationDegrees, zoom: CGFloat) -> Double

`latitude`	The latitude for which to return the value
`zoom`	The zoom level

Meters


                    
                    
                    projectedMeters(for:)

Calculate Spherical Mercator ProjectedMeters coordinates.

Swift

public static func projectedMeters(for coordinate: CLLocationCoordinate2D) -> ProjectedMeters


                                  coordinate

Coordinate at which to calculate the projected meters

Spherical Mercator ProjectedMeters coordinates


                    
                    
                    coordinate(for:)

Calculate a coordinate for a Spherical Mercator projected meters.

Swift

public static func coordinate(for projectedMeters: ProjectedMeters) -> CLLocationCoordinate2D


                                  projectedMeters

Spherical Mercator ProjectedMeters coordinates

A coordinate


                    
                    
                    project(_:zoomScale:)

Calculate a point on the map in Mercator Projection for a given coordinate at the specified zoom scale.

Note

Coordinate latitudes will be clamped to [Projection.latitudeMin, Projection.latitudeMax]

Swift

public static func project(_ coordinate: CLLocationCoordinate2D, zoomScale: CGFloat) -> MercatorCoordinate

`coordinate`	The coordinate for which to return the value.
`zoomScale`	The current zoom factor applied on the map, is used to calculate the world size as tileSize * zoomScale (i.e. 512 * 2 ^ Zoom level) where tileSize is the width of a tile in points.

Mercator coordinate


                    
                    
                    unproject(_:zoomScale:)

Calculate a coordinate for a given point on the map in Mercator Projection.

Swift

public static func unproject(_ mercatorCoordinate: MercatorCoordinate, zoomScale: CGFloat) -> CLLocationCoordinate2D

`mercatorCoordinate`	Point on the map in Mercator projection.
`zoomScale`	The current zoom factor applied on the map, is used to calculate the world size as tileSize * zoomScale (i.e. 512 * 2 ^ Zoom level) where tileSize is the width of a tile in points.

Unprojected coordinate