在此页

• 构造函数
• 特性
• 方法
• 静态方法
• 用法注意事项
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

DOMMatrix interface represents 4×4 matrices, suitable for 2D and 3D operations including rotation and translation. It is a mutable version of the DOMMatrixReadOnly 接口。

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

构造函数

DOMMatrix()

创建并返回新 DOMMatrix 对象。

特性

此接口继承特性从 DOMMatrixReadOnly , though some of these properties are altered to be mutable.

is2D 只读

A Boolean flag whose value is true if the matrix was initialized as a 2D matrix. If false , the matrix is 3D.

isIdentity 只读

A Boolean whose value is true if the matrix is the identity matrix . The identity matrix is one in which every value is 0 except those on the main diagonal from top-left to bottom-right corner (in other words, where the offsets in each direction are equal).

m11 , m12 , m13 , m14 , m21 , m22 , m23 , m24 , m31 , m32 , m33 , m34 , m41 , m42 , m43 , m44

Double-precision floating-point values representing each component of a 4×4 matrix, where m11 透过 m14 are the first column, m21 透过 m24 are the second column, and so forth.

a , b , c , d , e , f

Double-precision floating-point values representing the components of a 4×4 matrix which are required in order to perform 2D rotations and translations. These are aliases for specific components of a 4×4 matrix, as shown below.

2D	3D equivalent
a	m11
b	m12
c	m21
d	m22
e	m41
f	m42

方法

This interface includes the following methods, as well as the methods it inherits from DOMMatrixReadOnly .

DOMMatrix.invertSelf()

Modifies the matrix by inverting it. If the matrix can't be inverted, its components are all set to NaN ，和 is2D 返回 false .

DOMMatrix.multiplySelf()

Modifies the matrix by post-multiplying it with the specified DOMMatrix . This is equivalent to the dot product A⋅B , where matrix A is the source matrix and B is the matrix given as an input to the method. Returns itself.

DOMMatrix.preMultiplySelf()

Modifies the matrix by pre-multiplying it with the specified DOMMatrix . This is equivalent to the dot product B⋅A , where matrix A is the source matrix and B is the matrix given as an input to the method. Returns itself.

DOMMatrix.translateSelf()

Modifies the matrix by applying the specified vector. The default vector is [0, 0, 0] . Returns itself.

DOMMatrix.scaleNonUniformSelf()

Modifies the matrix by applying the specified scaling on the X, Y, and Z axes, centered at the given origin. By default, the Y and Z axes' scaling factors are both 1 , but the scaling factor for X must be specified. The default origin is (0, 0, 0) . Returns itself.

DOMMatrix.scaleSelf()

Modifies the matrix by applying the specified scaling factors, with the center located at the specified origin. Also returns itself. By default, the scaling factor is 1 for all three axes, and the origin is (0, 0, 0) . Returns itself.

DOMMatrix.scale3dSelf()

Modifies the matrix by applying the specified scaling factor to all three axes, centered on the given origin. Returns itself.

DOMMatrix.rotateSelf()

Modifies the matrix by rotating itself around each axis by the specified number of degrees. Returns itself.

DOMMatrix.rotateAxisAngleSelf()

Modifies the matrix by rotating it by the specified angle around the given vector. Returns itself.

DOMMatrix.rotateFromVectorSelf()

Modifies the matrix by rotating it by the angle between the specified vector and (1, 0) . Returns itself.

DOMMatrix.setMatrixValue()

Replaces the contents of the matrix with the matrix described by the specified transform or transforms. Returns itself.

DOMMatrix.skewXSelf()

Modifies the matrix by applying the specified skew transformation along the X-axis. Returns itself.

DOMMatrix.skewYSelf()

Modifies the matrix by applying the specified skew transformation along the Y-axis. Returns itself.

静态方法

This interface inherits methods from DOMMatrixReadOnly .

fromFloat32Array()

Creates a new mutable DOMMatrix object given an array of single-precision (32-bit) floating-point values. If the array has six values, the result is a 2D matrix; if the array has 16 values, the result is a 3D matrix. Otherwise, a TypeError exception is thrown.

fromFloat64Array()

Creates a new mutable DOMMatrix object given an array of double-precision (64-bit) floating-point values. If the array has six values, the result is a 2D matrix; if the array has 16 values, the result is a 3D matrix. Otherwise, a TypeError exception is thrown.

fromMatrix()

Creates a new mutable DOMMatrix object given an existing matrix or a DOMMatrixInit dictionary which provides the values for its properties.

用法注意事项

The matrix defined by the DOMMatrix interface is comprised of four rows of four columns each. While it's beyond the scope of this article to explain the mathematics involved, this 4×4 size is enough to describe any transformation you might apply to either 2D or 3D geometries.

DOMMatrix interface is designed with the intent that it will be used for all matrices within markup, supplanting the SVGMatrix and CSSMatrix 接口。

规范

规范	状态	注释
Geometry Interfaces Module Level 1 The definition of 'DOMMatrix' in that specification.	候选推荐	初始定义

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
DOMMatrix	Chrome 61 61 45 Disabled Disabled From version 45: this feature is behind the --enable-blink-features=GeometryInterfaces runtime flag.	Edge 79 79 79 Disabled Disabled From version 79: this feature is behind the --enable-blink-features=GeometryInterfaces runtime flag.	Firefox 33	IE No	Opera 48 48 32 Disabled Disabled From version 32: this feature is behind the --enable-blink-features=GeometryInterfaces runtime flag.	Safari 11	WebView Android 61	Chrome Android 61 61 45 Disabled Disabled From version 45: this feature is behind the --enable-blink-features=GeometryInterfaces runtime flag.	Firefox Android 33	Opera Android 48 48 32 Disabled Disabled From version 32: this feature is behind the --enable-blink-features=GeometryInterfaces runtime flag.	Safari iOS 11	Samsung Internet Android 8.0
DOMMatrix() 构造函数	Chrome 45	Edge 79	Firefox 33	IE No	Opera 32	Safari 11	WebView Android 61	Chrome Android 45	Firefox Android 33	Opera Android 32	Safari iOS 11	Samsung Internet Android 8.0
scale3dSelf()	Chrome 45	Edge 79	Firefox 33 33 Starting in Firefox 69, the first parameter ( scale ) is now optional with a default value of 1, per the specification. Previously it was required.	IE No	Opera 32	Safari 11	WebView Android 61	Chrome Android 45	Firefox Android 33 33 Firefox for Android requires the first parameter ( scale ).	Opera Android 32	Safari iOS 11	Samsung Internet Android 8.0
scaleSelf()	Chrome 45	Edge 79	Firefox 33 33 Firefox 69 introduced support for the modern six-parameter syntax for scaleSelf() . Previously, it only supported the older three-parameter syntax: scale( scaleX [, originX ][, originY ]]]) .	IE No	Opera 32	Safari 11	WebView Android 61	Chrome Android 45	Firefox Android 部分支持 33 部分支持 33 Firefox for Android only supports the older three-parameter syntax for scaleSelf() : scale( scaleX [, originX ][, originY ]]]) , and not the six-parameter syntax.	Opera Android 32	Safari iOS 11	Samsung Internet Android 8.0
Available in workers	Chrome 57	Edge 79	Firefox 69	IE No	Opera 44	Safari 11	WebView Android 61	Chrome Android 57	Firefox Android No	Opera Android 43	Safari iOS 11	Samsung Internet Android 8.0

图例

完整支持

完整支持

部分支持

部分支持

不支持

不支持

见实现注意事项。

用户必须明确启用此特征。

用户必须明确启用此特征。

另请参阅

• Its non-modifiable counterpart, DOMMatrixReadOnly
• SVGMatrix , the SVG matrix intended to be superseded by DOMMatrix

元数据

• 最后修改： Jun 22, 2020

相关话题

1. DOMMatrix
2. 构造函数

   1. DOMMatrix()
3. 继承：

   1. DOMMatrixReadOnly
4. Related pages for Geometry Interfaces

   1. CSSMatrix
   2. DOMMatrixReadOnly
   3. 点