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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()
rotateSelf()
rotateSelf(rotX)
rotateSelf(rotX, rotY)
rotateSelf(rotX, rotY, rotZ)
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.
Returns itself; the DOMMatrix rotated by the given vectors.
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)"
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