DOMPointReadOnly extension type

The DOMPointReadOnly interface specifies the coordinate and perspective fields used by DOMPoint to define a 2D or 3D point in a coordinate system.

There are two ways to create a new DOMPointReadOnly instance. First, you can use its constructor, passing in the values of the parameters for each dimension and, optionally, the perspective:

/* 2D */
const point2D = new DOMPointReadOnly(50, 50);

/* 3D */
const point3D = new DOMPointReadOnly(50, 50, 25);

/* 3D with perspective */
const point3DPerspective = new DOMPointReadOnly(100, 100, 100, 1.0);

The other option is to use the static DOMPointReadOnly.fromPoint_static method:

const point = DOMPointReadOnly.fromPoint({ x: 100, y: 100, z: 50, w: 1.0 });

API documentation sourced from MDN Web Docs.

on
Implemented types
Available extensions

Constructors

DOMPointReadOnly([num x, num y, num z, num w])
factory

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
w → double
The DOMPointReadOnly interface's w property holds the point's perspective value, w, for a read-only point in space.
no setter
x → double
The DOMPointReadOnly interface's x property holds the horizontal coordinate, x, for a read-only point in space. This property cannot be changed by JavaScript code in this read-only version of the DOMPoint object.
no setter
y → double
The DOMPointReadOnly interface's y property holds the vertical coordinate, y, for a read-only point in space.
no setter
z → double
The DOMPointReadOnly interface's z property holds the depth coordinate, z, for a read-only point in space.
no setter

Methods

matrixTransform([DOMMatrixInit matrix]) → DOMPoint
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJSON() → JSObject
The DOMPointReadOnly method toJSON() returns an object giving the form of the point object.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

fromPoint([DOMPointInit other]) → DOMPointReadOnly
The static DOMPointReadOnly method fromPoint() creates and returns a new DOMPointReadOnly object given a source point.