Interface IMutableMatrix33

m00

m01

m02

m10

m11

m12

m20

m21

m22

_swap

• _swap(l, r): void

• Swaps two elements in the internal array.

  Parameters

  • l: number

    Left index
  • r: number

    Right index

  Returns void

at

• at(row_i, column_i): number

• Gets the value at the specified row and column.

  Parameters

  • row_i: number

    Row index (0-based)
  • column_i: number

    Column index (0-based)

  Returns number

  Value at the specified position

clone

• clone(): IMutableMatrix33

• Creates a deep copy of this matrix.

  Returns IMutableMatrix33

  New mutable 3x3 matrix with the same values

copyComponents

• copyComponents(mat): IMutableMatrix33

• Copies components from another matrix.

  Parameters

  • mat: IMatrix33 | IMatrix44

    Source matrix to copy from

  Returns IMutableMatrix33

  This matrix for method chaining

determinant

• determinant(): number

• Calculates the determinant of this 3x3 matrix.

  Returns number

  Determinant value

flattenAsArray

• flattenAsArray(): number[]

• Flattens the matrix into a plain JavaScript array.

  Returns number[]

  Array containing all matrix elements

getScale

• getScale(): IVector3

• Extracts the scale factors from this matrix.

  Returns IVector3

  3D vector containing scale factors

getScaleTo

• getScaleTo(outVec): IMutableVector3

• Extracts the scale factors from this matrix and stores them in an output vector.

  Parameters

  • outVec: IMutableVector3

    Output vector to store the scale factors

  Returns IMutableVector3

  The output vector for method chaining

identity

• identity(): IMutableMatrix33

• Sets this matrix to the identity matrix.

  Returns IMutableMatrix33

  This matrix for method chaining

invert

• invert(): IMutableMatrix33

• Inverts this matrix in place.

  Returns IMutableMatrix33

  This matrix for method chaining

isDummy

• isDummy(): boolean

• Checks if this is a dummy/placeholder matrix.

  Returns boolean

  True if this is a dummy matrix

isEqual

• isEqual(mat, delta?): boolean

• Checks if this matrix is approximately equal to another matrix.

  Parameters

  • mat: IMatrix33

    Matrix to compare against
  • Optionaldelta: number

    Optional tolerance for comparison (default: small epsilon)

  Returns boolean

  True if matrices are approximately equal

isStrictEqual

• isStrictEqual(mat): boolean

• Checks if this matrix is strictly equal to another matrix.

  Parameters

  • mat: IMatrix33

    Matrix to compare against

  Returns boolean

  True if matrices are exactly equal

multiply

• multiply(mat): IMutableMatrix33

• Multiplies this matrix by another 3x3 matrix.

  Parameters

  • mat: IMatrix33

    Matrix to multiply by

  Returns IMutableMatrix33

  This matrix for method chaining

multiplyByLeft

• multiplyByLeft(mat): IMutableMatrix33

• Multiplies this matrix by another 3x3 matrix from the left.

  Parameters

  • mat: IMatrix33

    Matrix to multiply from the left

  Returns IMutableMatrix33

  This matrix for method chaining

multiplyScale

• multiplyScale(vec): IMutableMatrix33

• Multiplies this matrix by a scale vector.

  Parameters

  • vec: IVector3

    3D scale vector

  Returns IMutableMatrix33

  This matrix for method chaining

multiplyVector

• multiplyVector(vec): IVector3

• Multiplies this matrix by a 3D vector.

  Parameters

  • vec: IVector3

    3D vector to multiply

  Returns IVector3

  Resulting 3D vector

multiplyVectorTo

• multiplyVectorTo(vec, outVec): IMutableVector3

• Multiplies this matrix by a 3D vector and stores the result in an output vector.

  Parameters

  • vec: IVector3

    3D vector to multiply
  • outVec: IMutableVector3

    Output vector to store the result

  Returns IMutableVector3

  The output vector for method chaining

raw

• raw(): TypedArray

• Gets the raw typed array containing matrix data.

  Returns TypedArray

  Raw typed array

rotate

• rotate(vec3): IMutableMatrix33

• Applies a rotation specified by a 3D vector (Euler angles).

  Parameters

  • vec3: IVector3

    3D vector containing rotation angles

  Returns IMutableMatrix33

  This matrix for method chaining

rotateX

• rotateX(radian): IMutableMatrix33

• Applies a rotation around the X-axis to this matrix.

  Parameters

  • radian: number

    Rotation angle in radians

  Returns IMutableMatrix33

  This matrix for method chaining

rotateXYZ

• rotateXYZ(x, y, z): IMutableMatrix33

• Applies rotations around X, Y, and Z axes in that order.

  Parameters

  • x: number

    Rotation around X-axis in radians
  • y: number

    Rotation around Y-axis in radians
  • z: number

    Rotation around Z-axis in radians

  Returns IMutableMatrix33

  This matrix for method chaining

rotateY

• rotateY(radian): IMutableMatrix33

• Applies a rotation around the Y-axis to this matrix.

  Parameters

  • radian: number

    Rotation angle in radians

  Returns IMutableMatrix33

  This matrix for method chaining

rotateZ

• rotateZ(radian): IMutableMatrix33

• Applies a rotation around the Z-axis to this matrix.

  Parameters

  • radian: number

    Rotation angle in radians

  Returns IMutableMatrix33

  This matrix for method chaining

scale

• scale(vec): IMutableMatrix33

• Applies scaling to this matrix.

  Parameters

  • vec: IVector3

    3D scale vector

  Returns IMutableMatrix33

  This matrix for method chaining

setAt

• setAt(row_i, column_i, value): IMutableMatrix33

• Sets the value at the specified row and column.

  Parameters

  • row_i: number

    Row index (0-based)
  • column_i: number

    Column index (0-based)
  • value: number

    Value to set

  Returns IMutableMatrix33

  This matrix for method chaining

setComponents

• setComponents(m00, m01, m02, m10, m11, m12, m20, m21, m22): IMutableMatrix33

• Sets all matrix components from individual values.

  Parameters

  • m00: number

    Element at row 0, column 0
  • m01: number

    Element at row 0, column 1
  • m02: number

    Element at row 0, column 2
  • m10: number

    Element at row 1, column 0
  • m11: number

    Element at row 1, column 1
  • m12: number

    Element at row 1, column 2
  • m20: number

    Element at row 2, column 0
  • m21: number

    Element at row 2, column 1
  • m22: number

    Element at row 2, column 2

  Returns IMutableMatrix33

  This matrix for method chaining

toString

• toString(): string

• Converts the matrix to a string representation.

  Returns string

  String representation of the matrix

toStringApproximately

• toStringApproximately(): string

• Converts the matrix to an approximate string representation.

  Returns string

  Approximate string representation with rounded values

transpose

• transpose(): IMutableMatrix33

• Transposes this matrix in place.

  Returns IMutableMatrix33

  This matrix for method chaining

zero

• zero(): IMutableMatrix33

• Sets all matrix elements to zero.

  Returns IMutableMatrix33

  This matrix for method chaining