Class: Mat33

A 3-by-3 matrix. Stored in column-major order.

Constructors

Constructor

new Mat33(a, b, c): Mat33

Parameters

a

Vec3Value

b

Vec3Value

c

Vec3Value

Returns

Mat33

Constructor

new Mat33(): Mat33

Returns

Mat33

Properties

ex

ex: Vec3

---

ey

ey: Vec3

---

ez

ez: Vec3

Methods

getInverse22()

getInverse22(M): void

Get the inverse of this matrix as a 2-by-2. Returns the zero matrix if singular.

Parameters

M

Mat33

Returns

void

---

getSymInverse33()

getSymInverse33(M): void

Get the symmetric inverse of this matrix as a 3-by-3. Returns the zero matrix if singular.

Parameters

M

Mat33

Returns

void

---

setZero()

setZero(): Mat33

Set this matrix to all zeros.

Returns

Mat33

---

solve22()

solve22(v): Vec2

Solve A * x = b, where b is a column vector. This is more efficient than computing the inverse in one-shot cases. Solve only the upper 2-by-2 matrix equation.

Parameters

v

Vec2Value

Returns

Vec2

---

solve33()

solve33(v): Vec3

Solve A * x = b, where b is a column vector. This is more efficient than computing the inverse in one-shot cases.

Parameters

v

Vec3Value

Returns

Vec3

---

add()

static add(a, b): Mat33

Parameters

a

Mat33

b

Mat33

Returns

Mat33

---

assert()

static assert(o): void

Parameters

o

any

Returns

void

---

isValid()

static isValid(obj): boolean

Parameters

obj

any

Returns

boolean

---

mul()

Call Signature

static mul(a, b): Vec2

Multiply a matrix times a vector.

Parameters

a

Mat33

b

Vec2Value

Returns

Vec2

Call Signature

static mul(a, b): Vec3

Multiply a matrix times a vector.

Parameters

a

Mat33

b

Vec3Value

Returns

Vec3

---

mulVec2()

static mulVec2(a, b): Vec2

Parameters

a

Mat33

b

Vec2Value

Returns

Vec2

---

mulVec3()

static mulVec3(a, b): Vec3

Parameters

a

Mat33

b

Vec3Value

Returns

Vec3