Class Image

The Image class represents generic image data

Hierarchy

Image

Index

Constructors

Properties

bitsPerPixel byteWidth channels colorMode data height id pixelDensity width

Accessors

hasAlphaChannel

Methods

toBGR toRGB fromRGBData

Constructors

constructor

new Image(width: number, height: number, data: Buffer, channels: number, id: string, bitsPerPixel: number, byteWidth: number, colorMode?: ColorMode, pixelDensity?: { scaleX: number; scaleY: number }): Image
Image class constructor
Parameters
- width: number
  
  Image width in pixels
- height: number
  
  Image height in pixels
- data: Buffer
  
  Generic Image data
- channels: number
  
  Amount of Image channels
- id: string
  
  Image identifier
- bitsPerPixel: number
  
  Number of bits per single pixel
- byteWidth: number
  
  Total number of bytes per image line
- colorMode: ColorMode = ColorMode.BGR
  
  An images color mode, defaults to ColorMode.BGR
- pixelDensity: { scaleX: number; scaleY: number } = ...
  
  Object containing scale info to work with e.g. Retina display data where the reported display size and pixel size differ (Default: {scaleX: 1.0, scaleY: 1.0})
  - scaleX: number
  - scaleY: number
Returns Image
- Defined in image.class.ts:20

Properties

`Readonly` bitsPerPixel

bitsPerPixel: number

`Readonly` byteWidth

byteWidth: number

`Readonly` channels

channels: number

`Readonly` colorMode

colorMode: ColorMode = ColorMode.BGR

`Readonly` data

data: Buffer

`Readonly` height

height: number

`Readonly` id

id: string

`Readonly` pixelDensity

pixelDensity: { scaleX: number; scaleY: number } = ...

Type declaration

scaleX: number
scaleY: number

`Readonly` width

width: number

Accessors

hasAlphaChannel

get hasAlphaChannel(): boolean
hasAlphaChannel return true if an Image has an additional (fourth) alpha channel

Returns boolean
- Defined in image.class.ts:42

Methods

toBGR

toBGR(): Promise<Image>
toBGR converts an Image from RGB color mode to RGB

Returns Promise<Image>
- Defined in image.class.ts:70

toRGB

toRGB(): Promise<Image>
toRGB converts an Image from BGR color mode (default within nut.js) to RGB

Returns Promise<Image>
- Defined in image.class.ts:49

`Static` fromRGBData

fromRGBData(width: number, height: number, data: Buffer, channels: number, id: string, bitsPerPixel: number, byteWidth: number): Image
fromRGBData creates an Image from provided RGB data
Parameters
- width: number
- height: number
- data: Buffer
- channels: number
- id: string
- bitsPerPixel: number
- byteWidth: number
Returns Image
- Defined in image.class.ts:91