DOMMatrix: rotateSelf() method

The rotateSelf() method of the DOMMatrix interface is a mutable transformation method that modifies a matrix. It rotates the source matrix around each of its axes by the specified number of degrees and returns the rotated matrix.

To rotate a matrix without mutating it, see DOMMatrixReadOnly.rotate()

Syntax

rotateSelf()
rotateSelf(rotX)
rotateSelf(rotX, rotY)
rotateSelf(rotX, rotY, rotZ)

Parameters

rotX

A number; the x-coordinate of the vector denoting the axis of rotation

rotY Optional

A number; the y-coordinate of the vector denoting the axis of rotation.

rotZ Optional

A number; the z-coordinate of the vector denoting the axis of rotation

If only one parameter is passed, rotZ is the value of rotX, and both rotX and rotY are 0, and the rotation is a 2D rotation. If rotX and rotY are non-zero, the is2D is false.

Return value

Returns itself; the DOMMatrix rotated by the given vectors.

Examples

const matrix = new DOMMatrix(); // create a matrix
console.log(matrix.toString()); // output: "matrix(1, 0, 0, 1, 0, 0)"
matrix.rotateSelf(30); // mutate it
console.log(matrix); // output: "matrix(0.866, 0.5, -0.5, 0.866, 0, 0)"

Specifications

Browser compatibility

See also

• DOMMatrixReadOnly.rotate()
• CSS transform property
• CSS rotate property
• CSS <transform-function> functions
  • rotate()
  • rotate3d()
  • rotateX()
  • rotateY()
  • rotateZ()
• CSS transforms module
• SVG transform attribute
• CanvasRenderingContext2D interface methods
  • CanvasRenderingContext2D.rotate()
  • CanvasRenderingContext2D.transform()
  • CanvasRenderingContext2D.setTransform()
  • CanvasRenderingContext2D.resetTransform()