Check if PointerEventTypes.POINTERTAP comes from left or right mouse button

Escobar · May 28, 2020, 9:01am

BABYLON.PointerEventTypes.POINTERTAP is triggered independently if the user clicked in a mobile device, or a computer, that’s ok but there is any chance to know if the user pressed left or right mouse click on PC?

Thank you in advance.

wulf11 · May 28, 2020, 9:36am

It seems these PointerEventTypes are not available yet in the Babylon API.
You could use the event.button-property:

 scene.onPointerObservable.add((pointerInfo) => {
		switch (pointerInfo.type) {
			case BABYLON.PointerEventTypes.POINTERTAP:
                switch (pointerInfo.event.button) {
                    case 0: 
                        console.log("LEFT");
                        break;
                    case 1: 
                        console.log("MIDDLE");
                        break;
                    case 2: 
                        console.log("RIGHT");
                        break;
                }
            break;
        }
    });

Consider that event.which property also works, but is deprecated!

Escobar · May 28, 2020, 11:52am

It seems that pointerInfo.event.button returns a number but thank you so much!

wulf11 · May 28, 2020, 12:02pm

Did you try the provided code above?

Thats why I used a switch clause
You have to interpret the returned numbers with some sort of condition!

The PointerEventTypes are also just static constants, containing a number (like Enums)

github.com

BabylonJS/Babylon.js/blob/master/src/Events/pointerEvents.ts

import { Nullable } from "../types";
import { Vector2 } from "../Maths/math.vector";
import { PickingInfo } from "../Collisions/pickingInfo";

declare type Ray = import("../Culling/ray").Ray;

/**
 * Gather the list of pointer event types as constants.
 */
export class PointerEventTypes {
    /**
     * The pointerdown event is fired when a pointer becomes active. For mouse, it is fired when the device transitions from no buttons depressed to at least one button depressed. For touch, it is fired when physical contact is made with the digitizer. For pen, it is fired when the stylus makes physical contact with the digitizer.
     */
    public static readonly POINTERDOWN = 0x01;
    /**
     * The pointerup event is fired when a pointer is no longer active.
     */
    public static readonly POINTERUP = 0x02;
    /**
     * The pointermove event is fired when a pointer changes coordinates.

This file has been truncated. show original

Escobar · May 28, 2020, 12:06pm

Sorry my bad! I just copied pointerInfo.event.button and compared with “LEFT”

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Check if PointerEventTypes.POINTERTAP comes from left or right mouse button

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