Class Matrix3

constructor

• new Matrix3(): Matrix3

  Creates a new identity mat3

  Returns Matrix3

className

elements

isMatrix3

add

• add(a: Matrix3, b?: Matrix3): this

  Adds two mat3's

  Parameters

  • a: Matrix3
  • Optionalb: Matrix3

    如果不传，计算 this 和 a 的和

  Returns this

  this

adjoint

• adjoint(m?: Matrix3): this

  Calculates the adjugate of a mat3

  Parameters

  • m: Matrix3 = ...

  Returns this

  this

clone

• clone(): Matrix3

  Creates a new mat3 initialized with values from this matrix

  Returns Matrix3

  a new Matrix3

copy

• copy(m: Matrix3): this

  Copy the values from one mat3 to this

  Parameters

  • m: Matrix3

    the source matrix

  Returns this

  this

determinant

• determinant(): number

  Calculates the determinant of this

  Returns number

equals

• equals(a: Matrix3, b?: Matrix3): boolean

  Returns whether or not the matrices have approximately the same elements in the same position.

  Parameters

  • a: Matrix3
  • Optionalb: Matrix3

    如果不传，比较 this 和 a 是否近似相等

  Returns boolean

exactEquals

• exactEquals(a: Matrix3, b?: Matrix3): boolean

  Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)

  Parameters

  • a: Matrix3
  • Optionalb: Matrix3

    如果不传，比较 this 和 a 是否相等

  Returns boolean

frob

• frob(): number

  Returns Frobenius norm of this

  Returns number

  Frobenius norm

fromArray

• fromArray(array: ArrayLike<number>, offset?: number): this

  从数组赋值

  Parameters

  • array: ArrayLike<number>

    数组

  • offset: number = 0

    数组偏移值

  Returns this

  this

fromMat4

• fromMat4(m: Matrix4): this

  Copies the upper-left 3x3 values into the given mat3.

  Parameters

  • m: Matrix4

    the source 4x4 matrix

  Returns this

  this

fromQuat

• fromQuat(q: Quaternion): this

  Calculates a 3x3 matrix from the given quaternion

  Parameters

  • q: Quaternion

    Quaternion to create matrix from

  Returns this

  this

fromRotation

• fromRotation(rad: number): this

  Creates a matrix from a given angle

  Parameters

  • rad: number

    the angle to rotate the matrix by

  Returns this

  this

fromRotationTranslationScale

• fromRotationTranslationScale(
      rotation: number,
      x: number,
      y: number,
      scaleX: number,
      scaleY: number,
  ): this

  fromRotationTranslationScale

  Parameters

  • rotation: number

    rad angle

  • x: number
  • y: number
  • scaleX: number
  • scaleY: number

  Returns this

fromScaling

• fromScaling(v: Vector2): this

  Creates a matrix from a vector scaling

  Parameters

  • v: Vector2

    Scaling vector

  Returns this

  this

fromTranslation

• fromTranslation(v: Vector2): this

  Creates a matrix from a vector translation

  Parameters

  • v: Vector2

    Translation vector

  Returns this

  this

identity

• identity(): this

  Set this to the identity matrix

  Returns this

  this

invert

• invert(m?: Matrix3): this

  invert a matrix

  Parameters

  • m: Matrix3 = ...

    Matrix to transpose; defaults to this matrix.

  Returns this

  this

mul

• mul(a: Matrix3, b?: Matrix3): this

  Parameters

  • a: Matrix3
  • Optionalb: Matrix3

  Returns this

multiply

• multiply(a: Matrix3, b?: Matrix3): this

  Multiplies two matrix3's

  Parameters

  • a: Matrix3
  • Optionalb: Matrix3

    如果不传，计算 this 和 a 的乘积

  Returns this

  this

normalFromMat4

• normalFromMat4(m: Matrix4): this

  Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix

  Parameters

  • m: Matrix4

    Mat4 to derive the normal matrix from

  Returns this

  this

premultiply

• premultiply(m: Matrix3): this

  左乘

  Parameters

  • m: Matrix3

  Returns this

  this

rotate

• rotate(rad: number): this

  Rotates this by the given angle

  Parameters

  • rad: number

    the angle to rotate the matrix by

  Returns this

  this

scale

• scale(v: Vector2): this

  Scales the mat3 by the dimensions in the given vec2

  Parameters

  • v: Vector2

    the vec2 to scale the matrix by

  Returns this

  this

set

• set(
      m00: number,
      m01: number,
      m02: number,
      m10: number,
      m11: number,
      m12: number,
      m20: number,
      m21: number,
      m22: number,
  ): this

  Set the components of a mat3 to the given values

  Parameters

  • m00: number
  • m01: number
  • m02: number
  • m10: number
  • m11: number
  • m12: number
  • m20: number
  • m21: number
  • m22: number

  Returns this

  this

sub

• sub(a: Matrix3, b?: Matrix3): this

  Parameters

  • a: Matrix3
  • Optionalb: Matrix3

  Returns this

subtract

• subtract(a: Matrix3, b?: Matrix3): this

  Subtracts matrix b from matrix a

  Parameters

  • a: Matrix3
  • Optionalb: Matrix3

    如果不传，计算 this 和 a 的差

  Returns this

  this

toArray

• toArray(array?: MutableNumberArray, offset?: number): MutableNumberArray

  转换到数组

  Parameters

  • array: MutableNumberArray = []

    数组

  • offset: number = 0

    数组偏移值

  Returns MutableNumberArray

translate

• translate(v: Vector2): this

  Translate this by the given vector

  Parameters

  • v: Vector2

    vector to translate by

  Returns this

  this

transpose

• transpose(): this

  Transpose the values of this

  Returns this

  this