imageutil

package

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Versions in this module

v0

v0.3.0

Oct 12, 2024

Changes in this version

+ const COLOR_TYPE_ALPHA

+ const COLOR_TYPE_ALPHA16

+ const COLOR_TYPE_CMYK

+ const COLOR_TYPE_CMYKA

+ const COLOR_TYPE_GRAY

+ const COLOR_TYPE_GRAY16

+ const COLOR_TYPE_GRAYA

+ const COLOR_TYPE_GRAYA16

+ const COLOR_TYPE_HSLA

+ const COLOR_TYPE_HSVA

+ const COLOR_TYPE_RGBA

+ const COLOR_TYPE_ZERO

+ var EncodingExts = []string

+ func Alpha16ToColorTable(state *golua.LState, alpha int) *golua.LTable

+ func AlphaSet(img image.Image, alpha uint8)

+ func AlphaToColorTable(state *golua.LState, alpha int) *golua.LTable

+ func CMYKAToColorTable(state *golua.LState, cyan, magenta, yellow, key, alpha int) *golua.LTable

+ func CMYKToColorTable(state *golua.LState, cyan, magenta, yellow, key int) *golua.LTable

+ func Color16BitTo8Bit(c uint16) uint8

+ func Color8BitTo16Bit(c uint8) uint16

+ func ColorTableToAlpha(t *golua.LTable) uint8

+ func ColorTableToAlpha16(t *golua.LTable) uint16

+ func ColorTableToCMYK(t *golua.LTable) (uint8, uint8, uint8, uint8)

+ func ColorTableToCMYKA(t *golua.LTable) (uint8, uint8, uint8, uint8, uint8)

+ func ColorTableToGray(t *golua.LTable) uint8

+ func ColorTableToGray16(t *golua.LTable) uint16

+ func ColorTableToGrayA(t *golua.LTable) (uint8, uint8)

+ func ColorTableToGrayA16(t *golua.LTable) (uint16, uint16)

+ func ColorTableToHSLA(t *golua.LTable) (float64, float64, float64, uint8)

+ func ColorTableToHSVA(t *golua.LTable) (float64, float64, float64, uint8)

+ func ColorTableToRGBA(t *golua.LTable) (uint8, uint8, uint8, uint8)

+ func ColorTableToRGBAColor(t *golua.LTable) *color.RGBA

+ func DataChunkToTable(chunk *PNGDataChunk, state *golua.LState) *golua.LTable

+ func DecodeConfig(r io.Reader, encoding ImageEncoding) (int, int, error)

+ func DrawRect(base image.Image, sub image.Image, r image.Rectangle)

+ func FramesToSpritesheet(imgs []image.Image, model ColorModel, ...) image.Image

+ func Get(img image.Image, x, y int) (int, int, int, int)

+ func GetColor(img image.Image, state *golua.LState, x, y int) *golua.LTable

+ func Gray16ToColorTable(state *golua.LState, gray int) *golua.LTable

+ func GrayA16ToColorTable(state *golua.LState, gray, alpha int) *golua.LTable

+ func GrayAToColorTable(state *golua.LState, gray, alpha int) *golua.LTable

+ func GrayToColorTable(state *golua.LState, gray int) *golua.LTable

+ func HSLAToColorTable(state *golua.LState, hue, sat, light float64, alpha int) *golua.LTable

+ func HSVAToColorTable(state *golua.LState, hue, sat, val float64, alpha int) *golua.LTable

+ func ImageCompare(img1, img2 image.Image) bool

+ func ImageGetDraw(img image.Image) draw.Image

+ func PNGDataChunkEncode(w io.WriteSeeker, img image.Image, chunks []*PNGDataChunk) error

+ func PNGDataChunkWrite(key string, data string) []byte

+ func ParseAlpha16Table(t *golua.LTable) uint16

+ func ParseAlphaTable(t *golua.LTable) uint8

+ func ParseCMYKATable(t *golua.LTable) (uint8, uint8, uint8, uint8, uint8)

+ func ParseCMYKTable(t *golua.LTable) (uint8, uint8, uint8, uint8)

+ func ParseGray16Table(t *golua.LTable) uint16

+ func ParseGrayA16Table(t *golua.LTable) (uint16, uint16)

+ func ParseGrayATable(t *golua.LTable) (uint8, uint8)

+ func ParseGrayTable(t *golua.LTable) uint8

+ func ParseHSLATable(t *golua.LTable) (float64, float64, float64, uint8)

+ func ParseHSVATable(t *golua.LTable) (float64, float64, float64, uint8)

+ func ParseRGBATable(t *golua.LTable) (uint8, uint8, uint8, uint8)

+ func RGBAColorToColorTable(state *golua.LState, rgba *color.RGBA) *golua.LTable

+ func RGBAToColorTable(state *golua.LState, r, g, b, a int) *golua.LTable

+ func SpritesheetToFrames(img image.Image, copy bool, ...) []image.Image

+ func ZeroColorTable(state *golua.LState) *golua.LTable

type ImageEncoding

+ const ENCODING_BMP

+ const ENCODING_CUR

+ const ENCODING_ICO

+ const ENCODING_TIFF

type PNGChunkStripper

+ DataChunks []*PNGDataChunk

+ type PNGDataChunk struct

+ Data string

+ Key string

+ func NewPNGDataChunk(key string, data string) *PNGDataChunk

+ func PNGDataChunkDecode(r io.Reader) (image.Image, []*PNGDataChunk, error)

+ func PNGDataChunkRead(p []byte) (*PNGDataChunk, error)

+ func TableToDataChunk(t *golua.LTable) *PNGDataChunk

+ type PNGDataError string

+ func NewPNGDataError(err string) PNGDataError

+ func NewPNGDataErrorf(format string, args ...interface{}) PNGDataError

+ func (e PNGDataError) Error() string

v0.2.0

Aug 9, 2024

Changes in this version

+ var EncodingList = []ImageEncoding

+ var ModelList = []ColorModel

+ func ConvertColor(model ColorModel, red, green, blue, alpha int) (int, int, int, int)

+ func CopyImage(src image.Image, model ColorModel) image.Image

+ func Decode(r io.Reader, encoding ImageEncoding) (image.Image, error)

+ func Draw(base image.Image, sub image.Image, x, y, width, height int)

+ func Encode(w io.Writer, img image.Image, encoding ImageEncoding) error

+ func EncodingExtension(encoding ImageEncoding) string

+ func NewImage(width, height int, model ColorModel) image.Image

+ func PointToTable(state *golua.LState, p image.Point) *golua.LTable

+ func RGBAToTable(state *golua.LState, rgba *color.RGBA) *golua.LTable

+ func Set(img image.Image, x, y, red, green, blue, alpha int)

+ func SubImage(img image.Image, x1, y1, x2, y2 int, copy bool) image.Image

+ func TableToPoint(state *golua.LState, t *golua.LTable) image.Point

+ func TableToRGBA(state *golua.LState, t *golua.LTable) *color.RGBA

+ type ColorModel int

+ const MODEL_ALPHA

+ const MODEL_ALPHA16

+ const MODEL_CMYK

+ const MODEL_GRAY

+ const MODEL_GRAY16

+ const MODEL_NRGBA

+ const MODEL_NRGBA64

+ const MODEL_RGBA

+ const MODEL_RGBA64

+ func Limit(img image.Image, model ColorModel) (image.Image, ColorModel)

+ type ImageEncoding int

+ const ENCODING_GIF

+ const ENCODING_JPEG

+ const ENCODING_PNG

+ const ENCODING_UNKNOWN

+ func ExtensionEncoding(ext string) ImageEncoding

+ type PNGChunkStripper struct

+ ErrList []error

+ Reader io.Reader

+ func (r *PNGChunkStripper) Read(p []byte) (int, error)

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