types

package
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 Go to latest Published: Sep 18, 2021 License: NCSA Imports: 8 Imported by: 2

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Index

Constants

This section is empty.

Variables

View Source 
var (
	BGRModel color.Model = color.ModelFunc(bgrModel)
)
View Source 
var (
	RGBModel color.Model = color.ModelFunc(rgbModel)
)

Functions

This section is empty.

Types

type BGR 

type BGR struct {
	B, G, R uint8
}

BGR represents a traditional 32-bit alpha-premultiplied color, having 8 bits for each of red, green, blue.

func (BGR) RGBA 

func (c BGR) RGBA() (r, g, b, a uint32)

type BGRImage 

type BGRImage struct {
	// Pix holds the image's pixels, in R, G, B order. The pixel at
	// (x, y) starts at Pix[(y-Rect.Min.Y)*Stride + (x-Rect.Min.X)*3].
	Pix []uint8
	// Stride is the Pix stride (in bytes) between vertically adjacent pixels.
	Stride int
	// Rect is the image's bounds.
	Rect image.Rectangle
}

BGRImage is an in-memory image whose At method returns RGB values.

func NewBGRImage 

func NewBGRImage(r image.Rectangle) *BGRImage

NewBGRImage returns a new BGRImage image with the given bounds.

func (BGRImage) At 

func (p BGRImage) At(x, y int) color.Color

func (*BGRImage) BGRAt 

func (p *BGRImage) BGRAt(x, y int) BGR

func (BGRImage) Bounds 

func (p BGRImage) Bounds() image.Rectangle

func (BGRImage) Channels 

func (p BGRImage) Channels() int

func (BGRImage) ColorModel 

func (p BGRImage) ColorModel() color.Model

func (*BGRImage) FillFromBGRImage 

func (p *BGRImage) FillFromBGRImage(bgrImage *RGBImage) error

func (*BGRImage) FillFromGrayImage 

func (p *BGRImage) FillFromGrayImage(grayImage *image.Gray) error

func (*BGRImage) FillFromNRGBAImage 

func (p *BGRImage) FillFromNRGBAImage(nrgbaImage *image.NRGBA) error

func (*BGRImage) FillFromRGBAImage 

func (p *BGRImage) FillFromRGBAImage(rgbaImage *image.RGBA) error

func (*BGRImage) FillFromRGBImage 

func (p *BGRImage) FillFromRGBImage(rgbImage *RGBImage) error

func (*BGRImage) FillFromYCBCRImage 

func (p *BGRImage) FillFromYCBCRImage(ycImage *image.YCbCr) error

func (BGRImage) Mode 

func (p BGRImage) Mode() Mode

func (*BGRImage) PixOffset 

func (p *BGRImage) PixOffset(x, y int) int

PixOffset returns the index of the first element of Pix that corresponds to the pixel at (x, y).

func (BGRImage) Pixels 

func (p BGRImage) Pixels() []uint8

func (*BGRImage) Set 

func (p *BGRImage) Set(x, y int, c color.Color)

func (*BGRImage) SetBGR 

func (p *BGRImage) SetBGR(x, y int, c BGR)

func (*BGRImage) SubImage 

func (p *BGRImage) SubImage(r image.Rectangle) image.Image

SubImage returns an image representing the portion of the image p visible through r. The returned value shares pixels with the original image.

func (*BGRImage) ToRGBAImage 

func (p *BGRImage) ToRGBAImage() *image.RGBA

type Image 

type Image interface {
	image.Image
	Channels() int
	Pixels() []uint8
	Mode() Mode
}

type Mode 

type Mode int

mode represents the image mode 

const (
	RGBMode Mode = iota
	BGRMode
	NonInterlacedRGBMode
	NonInterlacedBGRMode
	InvalidMode Mode = 9999
)

func ModeString 

func ModeString(s string) (Mode, error)

ModeString retrieves an enum value from the enum constants string name. Throws an error if the param is not part of the enum.

func ModeValues 

func ModeValues() []Mode

ModeValues returns all values of the enum

func (Mode) Channels 

func (m Mode) Channels() int

func (Mode) IsAMode 

func (i Mode) IsAMode() bool

IsAMode returns "true" if the value is listed in the enum definition. "false" otherwise

func (Mode) MarshalJSON 

func (i Mode) MarshalJSON() ([]byte, error)

MarshalJSON implements the json.Marshaler interface for Mode

func (Mode) MarshalText 

func (i Mode) MarshalText() ([]byte, error)

MarshalText implements the encoding.TextMarshaler interface for Mode

func (Mode) MarshalYAML 

func (i Mode) MarshalYAML() (interface{}, error)

MarshalYAML implements a YAML Marshaler for Mode

func (*Mode) Scan 

func (i *Mode) Scan(value interface{}) error

func (Mode) String 

func (i Mode) String() string

func (*Mode) UnmarshalJSON 

func (i *Mode) UnmarshalJSON(data []byte) error

UnmarshalJSON implements the json.Unmarshaler interface for Mode

func (*Mode) UnmarshalText 

func (i *Mode) UnmarshalText(text []byte) error

UnmarshalText implements the encoding.TextUnmarshaler interface for Mode

func (*Mode) UnmarshalYAML 

func (i *Mode) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML implements a YAML Unmarshaler for Mode

func (Mode) Value 

func (i Mode) Value() (driver.Value, error)

type RGB 

type RGB struct {
	R, G, B uint8
}

RGB represents a traditional 32-bit alpha-premultiplied color, having 8 bits for each of red, green, blue.

func (RGB) RGBA 

func (c RGB) RGBA() (r, g, b, a uint32)

type RGBImage 

type RGBImage struct {
	// Pix holds the image's pixels, in R, G, B order. The pixel at
	// (x, y) starts at Pix[(y-Rect.Min.Y)*Stride + (x-Rect.Min.X)*3].
	Pix []uint8
	// Stride is the Pix stride (in bytes) between vertically adjacent pixels.
	Stride int
	// Rect is the image's bounds.
	Rect image.Rectangle
}

RGBImage is an in-memory image whose At method returns RGB values.

func NewRGBImage 

func NewRGBImage(r image.Rectangle) *RGBImage

NewRGBImage returns a new RGBImage image with the given bounds.

func (RGBImage) At 

func (p RGBImage) At(x, y int) color.Color

func (RGBImage) Bounds 

func (p RGBImage) Bounds() image.Rectangle

func (RGBImage) Channels 

func (p RGBImage) Channels() int

func (RGBImage) ColorModel 

func (p RGBImage) ColorModel() color.Model

func (*RGBImage) FillFromBGRImage 

func (p *RGBImage) FillFromBGRImage(bgrImage *BGRImage) error

func (*RGBImage) FillFromGrayImage 

func (p *RGBImage) FillFromGrayImage(grayImage *image.Gray) error

func (*RGBImage) FillFromNRGBAImage 

func (p *RGBImage) FillFromNRGBAImage(nrgbaImage *image.NRGBA) error

func (*RGBImage) FillFromRGBAImage 

func (p *RGBImage) FillFromRGBAImage(rgbaImage *image.RGBA) error

func (*RGBImage) FillFromRGBImage 

func (p *RGBImage) FillFromRGBImage(rgbImage *RGBImage) error

func (*RGBImage) FillFromYCBCRImage 

func (p *RGBImage) FillFromYCBCRImage(ycImage *image.YCbCr) error

func (RGBImage) Mode 

func (p RGBImage) Mode() Mode

func (*RGBImage) PixOffset 

func (p *RGBImage) PixOffset(x, y int) int

PixOffset returns the index of the first element of Pix that corresponds to the pixel at (x, y).

func (RGBImage) Pixels 

func (p RGBImage) Pixels() []uint8

func (*RGBImage) RGBAt 

func (p *RGBImage) RGBAt(x, y int) RGB

func (*RGBImage) Set 

func (p *RGBImage) Set(x, y int, c color.Color)

func (*RGBImage) SetRGB 

func (p *RGBImage) SetRGB(x, y int, c RGB)

func (*RGBImage) SubImage 

func (p *RGBImage) SubImage(r image.Rectangle) image.Image

SubImage returns an image representing the portion of the image p visible through r. The returned value shares pixels with the original image.

func (*RGBImage) ToRGBAImage 

func (p *RGBImage) ToRGBAImage() *image.RGBA

type ResizeAlgorithm 

type ResizeAlgorithm int
const (
	ResizeAlgorithmLinear ResizeAlgorithm = iota
	ResizeAlgorithmLinearASM
	ResizeAlgorithmHermite
	ResizeAlgorithmNearestNeighbor
	ResizeAlgorithmBiLinear    = ResizeAlgorithmLinear
	ResizeAlgorithmBiLinearASM = ResizeAlgorithmLinearASM
)

func ResizeAlgorithmString 

func ResizeAlgorithmString(s string) (ResizeAlgorithm, error)

ResizeAlgorithmString retrieves an enum value from the enum constants string name. Throws an error if the param is not part of the enum.

func ResizeAlgorithmValues 

func ResizeAlgorithmValues() []ResizeAlgorithm

ResizeAlgorithmValues returns all values of the enum

func (ResizeAlgorithm) IsAResizeAlgorithm 

func (i ResizeAlgorithm) IsAResizeAlgorithm() bool

IsAResizeAlgorithm returns "true" if the value is listed in the enum definition. "false" otherwise

func (ResizeAlgorithm) MarshalJSON 

func (i ResizeAlgorithm) MarshalJSON() ([]byte, error)

MarshalJSON implements the json.Marshaler interface for ResizeAlgorithm

func (ResizeAlgorithm) MarshalText 

func (i ResizeAlgorithm) MarshalText() ([]byte, error)

MarshalText implements the encoding.TextMarshaler interface for ResizeAlgorithm

func (ResizeAlgorithm) MarshalYAML 

func (i ResizeAlgorithm) MarshalYAML() (interface{}, error)

MarshalYAML implements a YAML Marshaler for ResizeAlgorithm

func (*ResizeAlgorithm) Scan 

func (i *ResizeAlgorithm) Scan(value interface{}) error

func (ResizeAlgorithm) String 

func (i ResizeAlgorithm) String() string

func (*ResizeAlgorithm) UnmarshalJSON 

func (i *ResizeAlgorithm) UnmarshalJSON(data []byte) error

UnmarshalJSON implements the json.Unmarshaler interface for ResizeAlgorithm

func (*ResizeAlgorithm) UnmarshalText 

func (i *ResizeAlgorithm) UnmarshalText(text []byte) error

UnmarshalText implements the encoding.TextUnmarshaler interface for ResizeAlgorithm

func (*ResizeAlgorithm) UnmarshalYAML 

func (i *ResizeAlgorithm) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML implements a YAML Unmarshaler for ResizeAlgorithm

func (ResizeAlgorithm) Value 

func (i ResizeAlgorithm) Value() (driver.Value, error)

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