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# Matrix

Represents a 3x3 transformation matrix in the following form:

`a c e` `( b d f )` `0 0 1`

### a

number

The `a (1, 1)` member of the matrix.

### b

number

The `b (2, 1)` member of the matrix.

### c

number

The `c (1, 2)` member of the matrix.

### d

number

The `d (2, 2)` member of the matrix.

### e

number

The e (1, 3) member of the matrix.

### f

number

The `f (2, 3)` member of the matrix.

## Constructors

### Matrix

(a?: number, b?: number, c?: number, d?: number, e?: number, f?: number)

Creates a transformation matrix with the specified parameters.

#### Parameters

##### a?

number

The `a (1, 1)` member of the matrix.

##### b?

number

The `b (2, 1)` member of the matrix.

##### c?

number

The `c (1, 2)` member of the matrix.

##### d?

number

The `d (2, 2)` member of the matrix.

##### e?

number

The `e (1, 3)` member of the matrix.

##### f?

number

The `f (2, 3)` member of the matrix.

## Methods

### clone

Creates a new instance with the same element values.

#### Returns

Matrix

• A new Matrix instance with the same element values.

### equals

Compares this matrix with another instance.

#### Parameters

##### other

Matrix

The matrix instance to compare with.

#### Returns

boolean

true if the matrix elements match. Otherwise, returns `false`.

### multiplyCopy

Multiplies the matrix by another one and returns the result as a new instance. The current instance elements are not altered.

#### Parameters

##### matrix

Matrix

The matrix to multiply by.

#### Returns

Matrix

• The result of the multiplication.

### round

Rounds the matrix elements to the specified number of fractional digits.

#### Parameters

##### digits

number

The number of fractional digits.

#### Returns

Matrix

• The current matrix instance.

### toArray

Returns the matrix elements as an `[a, b, c, d, e, f]` array.

#### Parameters

##### digits?

number

The number of fractional digits.

#### Returns

number[]

• An array representation of the matrix.

### toString

Formats the matrix elements as a string.

#### Parameters

##### digits?

number

The number of fractional digits.

##### separator?

string

The separator to place between elements.

#### Returns

string

• A string representation of the matrix. For example, `"1, 0, 0, 1, 0, 0"`.

### rotate

Creates a transformation matrix for rotation with the specified parameters.

#### Parameters

##### angle

number

The angle of rotation in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right". Negative values or values greater than 360 are normalized.

##### x

number

The center of rotation on the X axis.

##### y

number

The center of rotation on the Y axis.

#### Returns

Matrix

• The transformation matrix for the specified rotation.

### scale

Creates a transformation matrix for the scale with the specified parameters.

#### Parameters

##### scaleX

number

The scale factor on the X axis.

##### scaleY

number

The scale factor on the Y axis.

#### Returns

Matrix

• The transformation matrix for the specified scale.

### translate

Creates a transformation matrix for the translation with the specified parameters.

#### Parameters

##### x

number

The distance to translate along the X axis.

##### y

number

The distance to translate along the Y axis.

#### Returns

Matrix

• The transformation matrix for the specified translation.

### unit

Returns the unit (identity) transformation matrix.

#### Returns

Matrix

• The unit (identity) matrix.