import Bitmap from 'pureimage/src/bitmap.js'

public class | source

Bitmap

The Bitmap class is used for direct pixel manipulation(for example setting a pixel colour, transparency etc). It also provides a factory method for creating new instances of Context

Constructor Summary

Public Constructor
public	constructor(w: number, h: number, options: any) Creates an instance of Bitmap.

Member Summary

Public Members
public	data: ArrayBuffer
public	height: number
public	width: number

Method Summary

Public Methods
public	calculateIndex(x: number, y: number): number Calculate Index
public	getContext(): Context Context factory.
public	getPixelRGBA(x: number, y: number): number Get the RGBA value of an individual pixel as a hexadecimal number(See NAMED_COLORS for examples)
public	setPixelRGBA(x: number, y: number, rgba: number): void Set the RGBA(Red, Green, Blue, Alpha) values on an individual pixel level
public	setPixelRGBA_i(x: number, y: number, r: number, g: number, b: number, a: number): void Set the individual red, green, blue and alpha levels of an individual pixel

Public Constructors

public constructor(w: number, h: number, options: any) source

Creates an instance of Bitmap.

Params:

Name	Type	Attribute	Description
w	number		Width
h	number		Height
options	any		Currently unused

Public Members

public data: ArrayBuffer source

public height: number source

public width: number source

Public Methods

public calculateIndex(x: number, y: number): number source

Calculate Index

Params:

Name	Type	Attribute	Description
x	number		X position
y	number		Y position

Return:

number

public getContext(): Context source

Context factory. Creates a new Context instance object for the current bitmap object

Return:

Context

public getPixelRGBA(x: number, y: number): number source

Get the RGBA value of an individual pixel as a hexadecimal number(See NAMED_COLORS for examples)

Params:

Name	Type	Attribute	Description
x	number		X axis potiion
y	number		Y axis position

Return:

number

public setPixelRGBA(x: number, y: number, rgba: number): void source

Set the RGBA(Red, Green, Blue, Alpha) values on an individual pixel level

Params:

Name	Type	Attribute	Description
x	number		X axis position
y	number		Y axis position
rgba	number		A hex representation of the RGBA value of the pixel. See NAMED_COLORS for examples

Return:

void

public setPixelRGBA_i(x: number, y: number, r: number, g: number, b: number, a: number): void source

Set the individual red, green, blue and alpha levels of an individual pixel

Params:

Name	Type	Attribute	Description
x	number		X axis position
y	number		Y axis position
r	number		Red level
g	number		Green level
b	number		Blue level
a	number		Alpha level

Return:

void