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AffineMatrix

Index

Constructors

constructor

new AffineMatrix(): AffineMatrix

Returns AffineMatrix

Properties

publicdata

data: Float64Array = ...


data[0]	data[2]	data[4]
data[1]	data[3]	data[5]
0	0	1

Methods

publicclone

clone(dest?: AffineMatrix): AffineMatrix

Creates a new Matrix with the same data as the current AffineMatrix
Parameters
- optionaldest: AffineMatrix
Returns AffineMatrix

publicdeterminant

determinant(): number

Returns number

publicgetPosition

getPosition(): Vector

Returns Vector

publicgetRotation

getRotation(): number

Returns number

publicgetScale

getScale(): Vector

Get the scale of the matrix
Returns Vector

publicgetScaleX

getScaleX(): number

Returns number

publicgetScaleY

getScaleY(): number

Returns number

publicinverse

inverse(target?: AffineMatrix): AffineMatrix

Return the affine inverse, optionally store it in a target matrix.

It's recommended you call .reset() the target unless you know what you're doing
Parameters
- optionaltarget: AffineMatrix
Returns AffineMatrix

publicisIdentity

isIdentity(): boolean

Returns boolean

multiply

multiply(vector: Vector, dest?: Vector): Vector
multiply(matrix: AffineMatrix, dest?: AffineMatrix): AffineMatrix

Multiply the current matrix by a vector producing a new vector
Parameters
- vector: Vector
- optionaldest: Vector
Returns Vector

multiplyQuadInPlace

multiplyQuadInPlace(quad: number[]): void

Packed array of length 8, that contains 4 vertices, with 2 components each So: [x0, y0, x1, y1, x2, y2, x3, y3]
Parameters
- quad: number[]
Returns void

publicreset

reset(): AffineMatrix

Resets the current matrix to the identity matrix, mutating it
Returns AffineMatrix
Current matrix as identity

rotate

rotate(angle: number): AffineMatrix

Applies rotation to the current matrix mutating it
Parameters
- angle: number
  in Radians
Returns AffineMatrix

scale

scale(x: number, y: number): AffineMatrix

Applies scaling to the current matrix mutating it
Parameters
- x: number
- y: number
Returns AffineMatrix

publicsetPosition

setPosition(x: number, y: number): void

Parameters
- x: number
- y: number
Returns void

publicsetRotation

setRotation(angle: number): void

Parameters
- angle: number
Returns void

publicsetScale

setScale(scale: Vector): void

Parameters
- scale: Vector
Returns void

publicsetScaleX

setScaleX(val: number): void

Parameters
- val: number
Returns void

publicsetScaleY

setScaleY(val: number): void

Parameters
- val: number
Returns void

to4x4

to4x4(): Matrix

Returns Matrix

publictoDOMMatrix

toDOMMatrix(): DOMMatrix

Converts the current matrix into a DOMMatrix

This is useful when working with the browser Canvas context
Returns DOMMatrix
DOMMatrix

publictoString

toString(): string

Returns string

translate

translate(x: number, y: number): AffineMatrix

Applies translation to the current matrix mutating it
Parameters
- x: number
- y: number
Returns AffineMatrix

publicstaticidentity

identity(): AffineMatrix

Returns AffineMatrix

publicstaticrotation

rotation(angleRadians: number): AffineMatrix

Creates a brand new rotation matrix with the specified angle
Parameters
- angleRadians: number
Returns AffineMatrix

publicstaticscale

scale(sx: number, sy: number): AffineMatrix

Creates a brand new scaling matrix with the specified scaling factor
Parameters
- sx: number
- sy: number
Returns AffineMatrix

publicstatictranslation

translation(x: number, y: number): AffineMatrix

Creates a brand new translation matrix at the specified 3d point
Parameters
- x: number
- y: number
Returns AffineMatrix