AffineMatrix

Index

Constructors

• constructor

Properties

• data

Methods

• clone
• determinant
• getPosition
• getRotation
• getScale
• getScaleX
• getScaleY
• inverse
• isIdentity
• multiply
• reset
• rotate
• scale
• setPosition
• setRotation
• setScale
• setScaleX
• setScaleY
• to4x4
• toDOMMatrix
• toString
• translate
• identity
• rotation
• scale
• translation

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 4x4

  ---

  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

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