The DOMPointReadOnly() constructor returns a new DOMPointReadOnly object representing a point in 2D or 3D space, optionally with perspective, whose values cannot be altered by script code.

x Optional

The value of the horizontal coordinate, x, as a floating point number. The default value is 0.

y Optional

The value of the vertical coordinate, y, as a floating point number. The default value is 0.

z Optional

The value of the depth coordinate, z, as a floating point number. The default value is 0.

w Optional

The value of the perspective, w, as a floating point number. The default is 1.

A new DOMPointReadOnly object representing the specified location in space.

The following code demonstrates creating both 2D and 3D points.

var point2D = new DOMPointReadOnly(50, 25);
var point3D = new DOMPointReadOnly(50, 0, 10);
var perspectivePoint3D = new DOMPointReadOnly(50, 50, 25, 0.5);