# Matrix

## F2.G.Matrix

`Matrix` provides operations for 2x3 matrix. 

**Methods**

### `multiply(m1, m2)`

Multiply the two matrix.

**Parameters:**

| Name | Type  | Description  |
| ---- | ----- | ------------ |
| `m1` | Array | left matrix  |
| `m2` | Array | right matrix |

**Returns:**  Type: Array

### `scale(out, m, v)`

Scale operation.

**Parameters:**

| Name  | Type  | Description                       |
| ----- | ----- | --------------------------------- |
| `out` | Array | the result of the scale operation |
| `m`   | Array | the matrix to scale               |
| `v`   | Array | scale vector \[sx, sy]            |

**Returns:**  Type: Array

### rotate(out, m, radian)

Rotation operation.

**Parameters:**

| Name     | Type   | Description                        |
| -------- | ------ | ---------------------------------- |
| `out`    | Array  | the result of the rotate operation |
| `m`      | Array  | the matrix to rotate               |
| `radian` | Number | rotation radian                    |

**Returns:**  Type: Array

### `translate(out, m, v)`

Translation operation.

**Parameters:**

| Name     | Type   | Description                             |
| -------- | ------ | --------------------------------------- |
| `out`    | Array  | the result of the translation operation |
| `m`      | Array  | the matrix to translate                 |
| `radian` | Number | translation vector \[ x, y ]            |

**Returns:**  Type: Array

### transform(m, actions)

Perform translation, rotation and scale operations. All operations are configured and stored in actions, the supported operations in actions attribute are: 't' (translate), 's' (scale), 'r' (rotate). Operations can be combined in any combination. For example:<br>

```javascript
[
  [ 't', x, y ], // t for translate, x for offset on x-axis direction, y for offset in y-axis direction
  [ 's', sx, sy ], // s for scale, sx for scale on x-axis direction, sy for scale on y-axis direction
  [ 'r', radian] // r for rotate，radian for the radians of the rotation
]
```

**Parameters:**

| Name      | Type  | Description             |
| --------- | ----- | ----------------------- |
| `m`       | Array | the matrix to transform |
| `actions` | Array | operation setting       |

**Returns:**  Type: Array<br>


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