Class Matrix3

constructor

• new Matrix3(m?: Matrix3): Matrix3

  Parameters

  • Optionalm: Matrix3

    Optional Matrix3 to copy values from.

  Returns Matrix3

val

adjoint

• adjoint(): Matrix3

  Calculate the adjoint, or adjugate, of this Matrix.undefined

  Returns Matrix3

  This Matrix3.

clone

• clone(): Matrix3

  Make a clone of this Matrix3.undefined

  Returns Matrix3

  A clone of this Matrix3.

copy

• copy(src: Matrix3): Matrix3

  Copy the values of a given Matrix into this Matrix.

  Parameters

  • src: Matrix3

    The Matrix to copy the values from.

  Returns Matrix3

  This Matrix3.

determinant

• determinant(): number

  Calculate the determinant of this Matrix.undefined

  Returns number

  The determinant of this Matrix.

fromArray

• fromArray(a: any[]): Matrix3

  Set the values of this Matrix from the given array.

  Parameters

  • a: any[]

    The array to copy the values from.

  Returns Matrix3

  This Matrix3.

fromMat4

• fromMat4(m: Matrix4): Matrix3

  Copies the upper-left 3x3 values of a Matrix4 into this Matrix3, discarding the fourth row and column. This is useful when you need the rotation and scale portion of a transformation matrix without its translation component.

  Parameters

  • m: Matrix4

    The Matrix4 to copy the values from.

  Returns Matrix3

  This Matrix3.

fromQuat

• fromQuat(q: Quaternion): Matrix3

  Set the values of this Matrix from the given Quaternion.

  Parameters

  • q: Quaternion

    The Quaternion to set the values of this Matrix from.

  Returns Matrix3

  This Matrix3.

identity

• identity(): Matrix3

  Reset this Matrix to an identity (default) matrix.undefined

  Returns Matrix3

  This Matrix3.

invert

• invert(): Matrix3

  Invert this Matrix. Returns null if the matrix is not invertible (i.e. its determinant is zero).undefined

  Returns Matrix3

  This Matrix3, or null if the matrix cannot be inverted.

multiply

• multiply(src: Matrix3): Matrix3

  Multiply this Matrix by the given Matrix.

  Parameters

  • src: Matrix3

    The Matrix to multiply this Matrix by.

  Returns Matrix3

  This Matrix3.

normalFromMat4

• normalFromMat4(m: Matrix4): Matrix3

  Derives a normal matrix from the given Matrix4. The normal matrix is the transpose of the inverse of the Matrix4, and is used in lighting calculations to correctly transform surface normals when non-uniform scaling is applied. Returns null if the Matrix4 is not invertible (i.e. its determinant is zero).

  Parameters

  • m: Matrix4

    The Matrix4 to derive the normal matrix from.

  Returns Matrix3

  This Matrix3, or null if the Matrix4 cannot be inverted.

rotate

• rotate(rad: number): Matrix3

  Apply a rotation transformation to this Matrix.

  Parameters

  • rad: number

    The angle in radians to rotate by.

  Returns Matrix3

  This Matrix3.

scale

• scale(v: Vector2 | Vector4 | Vector3): Matrix3

  Apply a scale transformation to this Matrix.

  Uses the x and y components of the given Vector to scale the Matrix.

  Parameters

  • v: Vector2 | Vector4 | Vector3

    The Vector to scale this Matrix with.

  Returns Matrix3

  This Matrix3.

set

• set(src: Matrix3): Matrix3

  This method is an alias for Matrix3.copy.

  Parameters

  • src: Matrix3

    The Matrix to set the values of this Matrix from.

  Returns Matrix3

  This Matrix3.

translate

• translate(v: Vector2 | Vector4 | Vector3): Matrix3

  Translate this Matrix using the given Vector.

  Parameters

  • v: Vector2 | Vector4 | Vector3

    The Vector to translate this Matrix with.

  Returns Matrix3

  This Matrix3.

transpose

• transpose(): Matrix3

  Transpose this Matrix.undefined

  Returns Matrix3

  This Matrix3.