Class Mat3

constructor

• new Mat3(elements?): Mat3

• Parameters

  • Optional elements: number[]

    A vector of length 9, containing all matrix elements.

  Returns Mat3

elements

copy

• copy(matrix): Mat3

• Copy another matrix into this matrix object.

  Parameters

  • matrix: Mat3

  Returns Mat3

e

• e(row, column): number

• Get an element in the matrix by index. Index starts at 0, not 1!!!

  Parameters

  • row: number

  • column: number

  Returns number
• e(row, column, value): void

• Parameters

  • row: number

  • column: number

  • value: number

  Returns void

getTrace

• getTrace(target?): Vec3

• Gets the matrix diagonal elements

  Parameters

  • Optional target: Vec3

  Returns Vec3

identity

• identity(): void

• Sets the matrix to identity

  Returns void

  Todo

  Should perhaps be renamed to setIdentity() to be more clear.

  Todo

  Create another function that immediately creates an identity matrix eg. eye()

mmult

• mmult(matrix, target?): Mat3

• Matrix multiplication

  Parameters

  • matrix: Mat3

    Matrix to multiply with from left side.

  • Optional target: Mat3

  Returns Mat3

reverse

• reverse(target?): Mat3

• reverse the matrix

  Parameters

  • Optional target: Mat3

    Target matrix to save in.

  Returns Mat3

  The solution x

scale

• scale(vector, target?): Mat3

• Scale each column of the matrix

  Parameters

  • vector: Vec3

  • Optional target: Mat3

  Returns Mat3

setRotationFromQuaternion

• setRotationFromQuaternion(q): Mat3

• Set the matrix from a quaterion

  Parameters

  • q: Quaternion

  Returns Mat3

setTrace

• setTrace(vector): void

• Sets the matrix diagonal elements from a Vec3

  Parameters

  • vector: Vec3

  Returns void

setZero

• setZero(): void

• Set all elements to zero

  Returns void

smult

• smult(s): void

• Matrix-scalar multiplication

  Parameters

  • s: number

  Returns void

solve

• solve(b, target?): Vec3

• Solve Ax=b

  Parameters

  • b: Vec3

    The right hand side

  • Optional target: Vec3

    Optional. Target vector to save in.

  Returns Vec3

  The solution x

  Todo

  should reuse arrays

toString

• toString(): string

• Returns a string representation of the matrix.

  Returns string

transpose

• transpose(target?): Mat3

• Transpose the matrix

  Parameters

  • Optional target: Mat3

    Optional. Where to store the result.

  Returns Mat3

  The target Mat3, or a new Mat3 if target was omitted.

vmult

• vmult(v, target?): Vec3

• Matrix-Vector multiplication

  Parameters

  • v: Vec3

    The vector to multiply with

  • Optional target: Vec3

    Optional, target to save the result in.

  Returns Vec3