common

package
v0.0.0-...-069f472 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jan 8, 2024 License: MIT Imports: 29 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	MaxHeight = 1934
	MinHeight = -1934
)
View Source 
const DefaultTransparentDim = 2.0 / 100.0

DefaultTransparentDim sets the default dimming factor of transparent nodes to 2%.

View Source 
const MTSatelliteVersion = "0.9.1"

Variables

View Source 
var (
	ErrNoMoreBlocks           = errors.New("no more blocks")
	ErrMapContentSizeMismatch = errors.New("content size does not match")
	ErrBlockTruncated         = errors.New("block is truncated")
)

Error returned if a Producer has run to its end.

View Source 
var BackgroundColor = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
View Source 
var ResizeFilter = rez.NewLanczosFilter(3)

ResizeFilter is used to scale down the pyramid tiles.

Functions

func BackgroundImage 

func BackgroundImage(width, height int, bg color.RGBA) *image.RGBA

func BigMin 

func BigMin(minz, maxz, zcode int64) int64

func BlendColor 

func BlendColor(c1, c2 color.RGBA, a float32) color.RGBA

func Clamp32f 

func Clamp32f(x, a, b float32) float32

func ColorToHex 

func ColorToHex(col color.RGBA) string

func CoordToInterleaved 

func CoordToInterleaved(c Coord) (result int64)

func CoordToPlain 

func CoordToPlain(c Coord) int64

func DecodeFromBigEndian 

func DecodeFromBigEndian(key []byte) (int64, error)

func DecodeStringFromBytes 

func DecodeStringFromBytes(key []byte) (pos int64, err error)

DecodeStringFromBytes constructs a database key out of byte slice.

func DecodeStringFromBytesToInterleaved 

func DecodeStringFromBytesToInterleaved(key []byte) (v int64, err error)

func EncodeStringToBytes 

func EncodeStringToBytes(key int64) ([]byte, error)

EncodeStringToBytes encodes a block pos to byte slice.

func EncodeStringToBytesFromInterleaved 

func EncodeStringToBytesFromInterleaved(key int64) ([]byte, error)

func EncodeToBigEndian 

func EncodeToBigEndian(key int64) ([]byte, error)

func EncodeToMem 

func EncodeToMem(img image.Image) []byte

func FromBigEndian 

func FromBigEndian(key []byte) int64

func HashImage 

func HashImage(img *image.RGBA) []byte

func IdentityTranscoder 

func IdentityTranscoder(key []byte) ([]byte, error)

func IsPostgreSQL 

func IsPostgreSQL(host string) (string, bool)

func LoadPNG 

func LoadPNG(path string, bg color.RGBA) image.Image

func Max 

func Max(a, b int) int

func Min 

func Min(a, b int) int

func NaiveBigMin 

func NaiveBigMin(minz, maxz, zcode int64) int64

NaiveBigMin is for correctness checks of BigMin only.

func Order 

func Order(a, b int) (int, int)

func Order16 

func Order16(a, b int16) (int16, int16)

func Order64 

func Order64(a, b int64) (int64, int64)

func ParseColor 

func ParseColor(col string) (color.RGBA, error)

func ParseColorDefault 

func ParseColorDefault(col string, def color.RGBA) color.RGBA

func PrintVersionAndExit 

func PrintVersionAndExit()

func SaveAsPNG 

func SaveAsPNG(path string, img image.Image) (err error)

func SaveAsPNGAtomic 

func SaveAsPNGAtomic(path string, img image.Image) (err error)

func StringToBytes 

func StringToBytes(key int64) []byte

func ToBigEndian 

func ToBigEndian(key int64) []byte

func TranscodeInterleavedToPlain 

func TranscodeInterleavedToPlain(key []byte) ([]byte, error)

func TranscodePlainToInterleaved 

func TranscodePlainToInterleaved(key []byte) ([]byte, error)

func TransformInterleavedToPlain 

func TransformInterleavedToPlain(pos int64) int64

func TransformPlainToInterleaved 

func TransformPlainToInterleaved(pos int64) int64

Types

type BaseTileCreator 

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

func NewBaseTileCreator 

func NewBaseTileCreator(
	client DBClient,
	colors *Colors,
	bg color.RGBA,
	yMin, yMax int16,
	transparent bool,
	baseDir string) *BaseTileCreator

func (*BaseTileCreator) Close 

func (btc *BaseTileCreator) Close() error

func (*BaseTileCreator) RenderArea 

func (btc *BaseTileCreator) RenderArea(x, z int16) error

func (*BaseTileCreator) WriteFunc 

func (btc *BaseTileCreator) WriteFunc(i, j int, update BaseTileUpdateFunc) func() (bool, error)

WriteFunc returns a function intended to be run in background so the creation of the next tile with this creator can be done concurrently.

type BaseTileHash 

type BaseTileHash struct {
	sync.Mutex
	// contains filtered or unexported fields
}

func NewBaseTileHash 

func NewBaseTileHash(maxEntries int) *BaseTileHash

func (*BaseTileHash) Update 

func (bth *BaseTileHash) Update(x, y int, hash []byte) bool

type BaseTileUpdateFunc 

type BaseTileUpdateFunc func(x, y int, hash []byte) bool

type Block 

type Block struct {
	Coord Coord
	Data  []byte
}

Block data from Minetest database.

type BlockConsumer 

type BlockConsumer interface {
	Consume(*Block) error
	// Closes the open database connections.
	Close() error
}

BlockConsumer is used to store blocks in a new Minetest database.

type BlockProducer 

type BlockProducer interface {
	// error is ErrNoMoreBlocks if it run out of blocks.
	Next(*Block) error
	// Closes the open database connections.
	Close() error
}

BlockProducer is used to over a existing Minetest database and return its content block by block.

type Colors 

type Colors struct {
	Colors         []color.RGBA
	NameIndex      map[string]int32
	NumTransparent int32
	TransparentDim float32
}

func ParseColors 

func ParseColors(filename string) (colors *Colors, err error)

func (*Colors) BlendColors 

func (colors *Colors) BlendColors(sp *span, col color.RGBA, pos int32) color.RGBA

func (*Colors) IsTransparent 

func (colors *Colors) IsTransparent(index int32) bool

type Coord 

type Coord struct {
	X, Y, Z int16
}

func ClipCoord 

func ClipCoord(c Coord) Coord

func DecodeStringBytesToCoord 

func DecodeStringBytesToCoord(key []byte) (coord Coord, err error)

func InterleavedToCoord 

func InterleavedToCoord(pos int64) Coord

func MaxCoord 

func MaxCoord(a, b Coord) Coord

func MinCoord 

func MinCoord(a, b Coord) Coord

func PlainToCoord 

func PlainToCoord(i int64) (c Coord)

func (Coord) String 

func (c Coord) String() string

type Coverage3D 

type Coverage3D struct {
	// contains filtered or unexported fields
}

func NewCoverage3D 

func NewCoverage3D() *Coverage3D

func (*Coverage3D) Insert 

func (c3d *Coverage3D) Insert(c Coord)

func (*Coverage3D) Query 

func (c3d *Coverage3D) Query(c1, c2 Coord) []Range

type Cuboid 

type Cuboid struct {
	P1, P2 Coord
}

func (Cuboid) Contains 

func (cub Cuboid) Contains(c Coord) bool

type DBClient 

type DBClient interface {
	QueryCuboid(cuboid Cuboid, fn func(*Block) *Block) (count int, err error)
	Close() error
}

type DBClientFactory 

type DBClientFactory interface {
	Create() (DBClient, error)
	Close() error
}

func CreateDBClientFactory 

func CreateDBClientFactory(host string, port int) (DBClientFactory, error)

type DecodedBlock 

type DecodedBlock struct {
	Version     byte
	Transparent bool
	MapContent  []byte
	AirID       int32
	IgnoreID    int32
	IndexMap    map[int32]int32
}

func NewDecodedBlock 

func NewDecodedBlock(data []byte, colors *Colors) (db *DecodedBlock, err error)

func (*DecodedBlock) AirOnly 

func (db *DecodedBlock) AirOnly() bool

func (*DecodedBlock) Content 

func (db *DecodedBlock) Content(x, y, z int) (content int32, found bool)

type KeyDecoder 

type KeyDecoder func([]byte) (int64, error)

type KeyEncoder 

type KeyEncoder func(int64) ([]byte, error)

type KeyJoiner 

type KeyJoiner func(Coord) int64

type KeySplitter 

type KeySplitter func(int64) Coord

type KeyTranscoder 

type KeyTranscoder func([]byte) ([]byte, error)

type KeyTransformer 

type KeyTransformer func(int64) int64

type PGClient 

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

func (*PGClient) Close 

func (pgc *PGClient) Close() error

func (*PGClient) QueryCuboid 

func (pgc *PGClient) QueryCuboid(
	cuboid Cuboid,
	fn func(*Block) *Block,
) (int, error)

type PGClientFactory 

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

func NewPGClientFactory 

func NewPGClientFactory(connS string) (*PGClientFactory, error)

func (*PGClientFactory) Close 

func (pgcf *PGClientFactory) Close() error

func (*PGClientFactory) Create 

func (pgcf *PGClientFactory) Create() (DBClient, error)

type Range 

type Range struct {
	Z  int16
	Y1 int16
	Y2 int16
	X1 int16
	X2 int16
}

type RedisClient 

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

func NewRedisClient 

func NewRedisClient(network, address string) (client *RedisClient, err error)

func (*RedisClient) Close 

func (client *RedisClient) Close() error

func (*RedisClient) QueryCuboid 

func (client *RedisClient) QueryCuboid(cuboid Cuboid, fn func(*Block) *Block) (count int, err error)

type RedisClientFactory 

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

func NewRedisClientFactory 

func NewRedisClientFactory(host string, port int) (*RedisClientFactory, error)

func (*RedisClientFactory) Close 

func (rcf *RedisClientFactory) Close() error

func (*RedisClientFactory) Create 

func (rcf *RedisClientFactory) Create() (DBClient, error)

type Renderer 

type Renderer struct {
	RejectedBlocks    int
	SolidBlocks       int
	TransparentBlocks int
	// contains filtered or unexported fields
}

func NewRenderer 

func NewRenderer(width, height int, transparent bool) (renderer *Renderer)

func (*Renderer) CreateImage 

func (r *Renderer) CreateImage(colors []color.RGBA, background color.RGBA) *image.RGBA

func (*Renderer) CreateShadedImage 

func (r *Renderer) CreateShadedImage(
	xOfs, zOfs, width, height int,
	cols *Colors, background color.RGBA) *image.RGBA

func (*Renderer) GetPos 

func (r *Renderer) GetPos() (int16, int16)

func (*Renderer) IsEmpty 

func (r *Renderer) IsEmpty() bool

func (*Renderer) IsFilled 

func (r *Renderer) IsFilled() bool

func (*Renderer) RenderBlock 

func (r *Renderer) RenderBlock(block *Block, colors *Colors) (err error)

func (*Renderer) Reset 

func (r *Renderer) Reset()

func (*Renderer) SetPos 

func (r *Renderer) SetPos(xOfs, zOfs int16)

type YOrder 

type YOrder struct {
	RenderFn func(*Block) error
	// contains filtered or unexported fields
}

func NewYOrder 

func NewYOrder(renderFn func(*Block) error, capacity int) *YOrder

func (*YOrder) Drain 

func (yo *YOrder) Drain() error

func (*YOrder) Len 

func (yo *YOrder) Len() int

func (*YOrder) Less 

func (yo *YOrder) Less(i, j int) bool

func (*YOrder) Pop 

func (yo *YOrder) Pop() interface{}

func (*YOrder) Push 

func (yo *YOrder) Push(x interface{})

func (*YOrder) RenderBlock 

func (yo *YOrder) RenderBlock(block *Block) (*Block, error)

func (*YOrder) Reset 

func (yo *YOrder) Reset()

func (*YOrder) Swap 

func (yo *YOrder) Swap(i, j int)

Source Files

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