pmtiles

Documentation

Index

• Constants
• type Compression
• type EntryV3
• type HeaderV3
• type Storage
  • func NewStorage(ctx context.Context, logger log.Logger, url string) (func(), *Storage, error)
  • func (s *Storage) LoadMapInfos() (storage.MapInfos, error)
  • func (s *Storage) ReadTileData(ctx context.Context, z uint8, x uint64, y uint64) ([]byte, error)
• type TileType

Constants

const (
	UnknownTileType TileType = 0
	Mvt                      = 1
	Png                      = 2
	Jpeg                     = 3
	Webp                     = 4
)

const (
	UnknownCompression Compression = 0
	NoCompression                  = 1
	Gzip                           = 2
	Brotli                         = 3
	Zstd                           = 4
)

const HeaderV3Len = 127

Types

type Compression

type Compression uint8

type EntryV3

type EntryV3 struct {
	TileId    uint64
	Offset    uint64
	Length    uint32
	RunLength uint32
}

type HeaderV3

type HeaderV3 struct {
	SpecVersion         uint8
	RootOffset          uint64
	RootLength          uint64
	MetadataOffset      uint64
	MetadataLength      uint64
	LeafDirectoryOffset uint64
	LeafDirectoryLength uint64
	TileDataOffset      uint64
	TileDataLength      uint64
	AddressedTilesCount uint64
	TileEntriesCount    uint64
	TileContentsCount   uint64
	Clustered           bool
	InternalCompression Compression
	TileCompression     Compression
	TileType            TileType
	MinZoom             uint8
	MaxZoom             uint8
	MinLonE7            int32
	MinLatE7            int32
	MaxLonE7            int32
	MaxLatE7            int32
	CenterZoom          uint8
	CenterLonE7         int32
	CenterLatE7         int32
}

type Storage

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

func NewStorage

func NewStorage(ctx context.Context, logger log.Logger, url string) (func(), *Storage, error)

func (*Storage) LoadMapInfos

func (s *Storage) LoadMapInfos() (storage.MapInfos, error)

func (*Storage) ReadTileData

func (s *Storage) ReadTileData(ctx context.Context, z uint8, x uint64, y uint64) ([]byte, error)

type TileType

type TileType uint8