tile

Documentation

Index

• type Id
  • func CreateId(z uint8, x uint32, y uint32) Id
  • func (this *Id) X() uint32
  • func (this *Id) Y() uint32
  • func (this *Id) Z() uint8
• type Image

Types

type Id

type Id struct {
	// contains filtered or unexported fields
}

* Data structure representing a tile ID.

func CreateId

func CreateId(z uint8, x uint32, y uint32) Id

* Creates a tile ID based on zoom level, x and y coordinate.

func (*Id) X

func (this *Id) X() uint32

* Returns the X coordinate associated with this map tile.

func (*Id) Y

func (this *Id) Y() uint32

* Returns the Y coordinate associated with this map tile.

func (*Id) Z

func (this *Id) Z() uint8

* Returns the zoom level associated with this map tile.

type Image

type Image interface {
	Close() error
	Read(buf []byte) (int, error)
	ReadAt(buf []byte, offset int64) (int, error)
	Seek(offset int64, whence int) (int64, error)
}

* An image - either fetched from a tile server or stored in cache. * * Implements io.ReadSeekCloser and io.ReaderAt.