tile

Documentation

Index

• Variables
• func ConvertToTile(lat, long, zoom float64, proj *Elips) (x, y int)
• type Elips
• type Tile
  • func (t Tile) GetNearby(side int) []Tile

Variables

var (
	// ElipsWGS84 mercator WGS84 Eccentricity
	ElipsWGS84 = Elips{Eccentricity: 0.08181919084262157}
	// ElipsSpherical mercator for spherical Eccentricity
	ElipsSpherical = Elips{Eccentricity: 0}
)

Functions

func ConvertToTile

func ConvertToTile(lat, long, zoom float64, proj *Elips) (x, y int)

ConvertToTile convert latitude and longtitude to XYZ tile for specified mercator projection

Types

type Elips

type Elips struct {
	Eccentricity float64
}

Elips contains eccentrcity for calculating

type Tile

type Tile struct {
	X     int
	Y     int
	Z     int
	Image []byte
}

Tile contains coords and image []byte

func (Tile) GetNearby

func (t Tile) GetNearby(side int) []Tile

GetNearby return all nearby tiles for specified square side