The

interface represents 4x4 matrices, suitable for 2D and 3D operations. If this interface defines only read-only matrices, the **DOMMatrixReadOnly**`DOMMatrix`

interface which inherits from it, add all the properties and the methods to allow to have modifiable matrices.

A 4x4 matrix is suitable to describe any rotation and translation in 3D.

This interface should be available inside Web workers, though some implementations doesn't allow it yet.

## Properties

*This interface doesn't inherit any other property.*

`m11`

,`m12`

,`m13`

,`m14`

,`m21`

,`m22`

,`m23`

,`m24`

,`m31`

,`m32`

,`m33`

,`m34`

,`m41`

,`m42`

,`m43`

,`m44`

Read only- Are
`double`

representing each component of a 4x4 matrix. They are read-only, but their counterpart, with the same name, in`DOMMatrix`

aren't. `a`

,`b`

,`c`

,`d`

,`e`

,`f`

Read only- Are
`double`

representing each component of a 4x4 matrix needed for 2D rotations and translations. They are aliases for some components of the 4x4 matrix:2D 3D equivalent `a`

`m11`

`b`

`m12`

`c`

`m21`

`d`

`m22`

`e`

`m41`

`f`

`m42`

`DOMMatrix`

aren't. `DOMMatrixReadOnly.is2D`

Read only- Is a
`Boolean`

indicating if the matrix contains a 2D matrix and only accept 2D transformations. `DOMMatrixReadOnly.isIdentity`

Read only- Is a
`Boolean`

indincating if the matrix identity, that is a matrix with`1`

on the components of its diagonal, and`0`

elsewhere.

## Methods

*This interface doesn't inherit any method.*

`DOMMatrixReadOnly.flipX()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being flipped around the x-axis, that is multiplied by the`DOMMatrix(-1, 0, 0, 1, 0, 0)`

. The original matrix is not modified. `DOMMatrixReadOnly.flipY()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being flipped around the y-axis, that is multiplied by the`DOMMatrix(1, 0, 0, -1, 0, 0)`

. The original matrix is not modified. `DOMMatrixReadOnly.inverse()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being inverted. The original matrix is not modified. If the matrix cannot be inverted, all its components are set to`NaN`

and`is2D()`

returns`false`

. `DOMMatrixReadOnly.multiply()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being multiplied by the given`DOMMatrix`

. The original matrix is not modified. `DOMMatrixReadOnly.rotateAxisAngle()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being rotated by the given angle and the given vector. The original matrix is not modified. `DOMMatrixReadOnly.rotate()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being rotated by the given angle, with the rotation centered on the origin given. The original matrix is not modified. `DOMMatrixReadOnly.rotateFromVector()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being rotated by the angle between the given vector and (1,0), centered on the origin given. The original matrix is not modified. `DOMMatrixReadOnly.scale()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the matrix x and y dimensions being scaled by the given factor, centered on the origin given. The original matrix is not modified. `DOMMatrixReadOnly.scale3d()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the matrix x, y and z dimension being scaled by the given factor, centered on the origin given. The original matrix is not modified. `DOMMatrixReadOnly.scaleNonUniform()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the matrix x, y and z dimension being scaled by the given factor for each dimension, centered on the origin given. The original matrix is not modified. `DOMMatrixReadOnly.skewX()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being skewed along the x-axis by the given factor. The original matrix is not modified. `DOMMatrixReadOnly.skewY()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the original matrix being skewed along the y-axis by the given factor. The original matrix is not modified. `DOMMatrixReadOnly.toFloat32Array()`

- Returns a
`Float32Array`

containing the 6 components (`a`

,`b`

,`c`

,`d`

,`e`

,`f`

) in the case of a 2D matrix or the 16 components (`m11`

,`m12`

,`m13`

,`m14`

,`m21`

,`m22`

,`m23`

,`m24`

,`m31`

,`m32`

,`m33`

,`m34`

,`m41`

,`m42`

,`m43`

,`m44`

) for a 3D matrix. `DOMMatrixReadOnly.toFloat64Array()`

- Returns a
`Float64Array`

containing the 6 components (`a`

,`b`

,`c`

,`d`

,`e`

,`f`

) in the case of a 2D matrix or the 16 components (`m11`

,`m12`

,`m13`

,`m14`

,`m21`

,`m22`

,`m23`

,`m24`

,`m31`

,`m32`

,`m33`

,`m34`

,`m41`

,`m42`

,`m43`

,`m44`

) for a 3D matrix. `DOMMatrixReadOnly.toJSON()`

- Returns a JSON representation of the
`DOMMatrixReadOnly`

object. `DOMMatrixReadOnly.toString()`

- Returns a
`DOMString`

containing the 6 components separated by a`','`

and prefixed by the CSS matrix functional notation, as`'matrix (a, b, c, d, e, f)',`

in the case of a 2D matrix or matrix3d functional notation and the 16 components,`'matrix3d(m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44)'`

, for a 3D matrix. `DOMMatrixReadOnly.transformPoint()`

- Returns a
`DOMPoint`

that is the point given in parameter multiplied by the matrix. But the original point and the matrix aren't modified. `DOMMatrixReadOnly.translate()`

- Returns a
`DOMMatrix`

containing a new matrix being the result of the matrix being translated by the given vector. The original matrix is not modified.

## Specifications

Specification | Status | Comment |
---|---|---|

Geometry Interfaces Module Level 1 The definition of 'DOMMatrixReadOnly' in that specification. |
Candidate Recommendation | Initial definition |

## Browser compatibility

**We're converting our compatibility data into a machine-readable JSON format**.
This compatibility table still uses the old format,
because we haven't yet converted the data it contains.
**Find out how you can help!**

Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|

Basic support | 61 | 33 (33) | No support | 48 | No support |

Availability on Web workers | 61 | No support | No support | 48 | No support |

Feature | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|

Basic support | 61 | 61 | 33.0 (33) | No support | 48 | No support |

Availability on Web workers | 61 | 61 | No support | No support | 48 | No support |

## See also

## Document Tags and Contributors

**Tags:**

**Contributors to this page:**chrisdavidmills, jpmedley, darrnshn, zbjornson, zsk526, blooddy, jwhitlock, teoli

**Last updated by:**chrisdavidmills,