DOMMatrix: rotateSelf() method

{{APIRef("Geometry Interfaces")}}{{AvailableInWorkers}}

The rotateSelf() method of the {{domxref("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 {{domxref("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_inline}}
  • : A number; the y-coordinate of the vector denoting the axis of rotation.
• rotZ {{optional_inline}}
  • : 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

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("DOMMatrixReadOnly.rotate()")}}
• CSS {{cssxref("transform")}} property
• CSS {{cssxref("rotate")}} property
• CSS {{cssxref("transform-function")}} functions
  • {{cssxref("transform-function/rotate", "rotate()")}}
  • {{cssxref("transform-function/rotate3d", "rotate3d()")}}
  • {{cssxref("transform-function/rotateX", "rotateX()")}}
  • {{cssxref("transform-function/rotateY", "rotateY()")}}
  • {{cssxref("transform-function/rotateZ", "rotateZ()")}}
• CSS transforms module
• SVG transform attribute
• {{domxref("CanvasRenderingContext2D")}} interface methods
  • {{domxref("CanvasRenderingContext2D.rotate()")}}
  • {{domxref("CanvasRenderingContext2D.transform()")}}
  • {{domxref("CanvasRenderingContext2D.setTransform()")}}
  • {{domxref("CanvasRenderingContext2D.resetTransform()")}}