Source: packages/events/src/FederatedPointerEvent.ts

import { FederatedMouseEvent } from './FederatedMouseEvent';

/**
 * A PIXI.FederatedEvent for pointer events.
 *
 * @memberof PIXI
 */
export class FederatedPointerEvent extends FederatedMouseEvent implements PointerEvent
{
    /**
     * The unique identifier of the pointer.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/pointerId
     */
    public pointerId: number;

    /**
     * The width of the pointer's contact along the x-axis, measured in CSS pixels.
     * radiusX of TouchEvents will be represented by this value.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/width
     */
    public width = 0;

    /**
     * The height of the pointer's contact along the y-axis, measured in CSS pixels.
     * radiusY of TouchEvents will be represented by this value.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/height
     */
    public height = 0;

    /**
     * Indicates whether or not the pointer device that created the event is the primary pointer.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/isPrimary
     */
    public isPrimary = false;

    /**
     * The type of pointer that triggered the event.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/pointerType
     */
    public pointerType: string;

    /**
     * Pressure applied by the pointing device during the event.
     *s
     * A Touch's force property will be represented by this value.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/pressure
     */
    public pressure: number;

    /**
     * Barrel pressure on a stylus pointer.
     *
     * @see https://w3c.github.io/pointerevents/#pointerevent-interface
     */
    public tangentialPressure: number;

    /**
     * The angle, in degrees, between the pointer device and the screen.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/tiltX
     */
    public tiltX: number;

    /**
     * The angle, in degrees, between the pointer device and the screen.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/tiltY
     */
    public tiltY: number;

    /**
     * Twist of a stylus pointer.
     *
     * @see https://w3c.github.io/pointerevents/#pointerevent-interface
     */
    public twist: number;

    /**
     * This is the number of clicks that occurs in 200ms/click of each other.
     */
    public detail: number;

    // Only included for completeness for now
    getCoalescedEvents(): PointerEvent[]
    {
        if (this.type === 'pointermove' || this.type === 'mousemove' || this.type === 'touchmove')
        {
            return [this];
        }

        return [];
    }

    // Only included for completeness for now
    getPredictedEvents(): PointerEvent[]
    {
        throw new Error('getPredictedEvents is not supported!');
    }
}