aframe cardboard button (magnet) click does not trigger

问题

In my aframe project i want to controll the movement speed with the cardboard magnetic button => start/stop with cardboard button.

On my desktop and phone the click event works like i want but if i put my iphone in the cardboard the button "click" doesn't trigger. If i touch with my finger on the scene it works...

Does the cursor need some settings to have access to the cardboard button? I tested the button in the google cardboard app and it worked.

Here is a little example of what i have. You can see the click event in the console.

    <!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>Click Test</title>
    <script src="https://aframe.io/releases/0.7.1/aframe.min.js"></script>
    <script src="https://unpkg.com/aframe-extras.ocean@3.13.1/dist/aframe-extras.ocean.min.js"></script>
    <script>
    AFRAME.registerComponent("start-click", {
        init: function() {

            this.el.addEventListener("click", function() {
                console.log("clicked in the scene")
            });
        }
        });
    </script>
</head>

<body>
    <a-scene start-click>
        <!-- sky + ocean -->
        <a-sky radius="100" color="tomato" position="0 -6 0 "></a-sky>
        <a-ocean id="ocean" width="200" depth="200" density="200" position="0 0 0"></a-ocean>

        <!-- camera + cursor. -->
        <a-camera id="camera" position="0 20 80 " fly wasd-controls-enabled="false">
            <a-cursor fuse="false" id="cursor" color="black"></a-cursor>
        </a-camera>
    </a-scene>
    <script>
        document.querySelector("a-scene").enterVR();
    </script>
</body>

</html>

回答1:

Looking at Don's universal controls, he's registering the touch events on the canvas. Borrowing from his code, you could try something like:

AFRAME.registerComponent("start-click", {
    init: function() {
        const sceneEl = this.el.sceneEl
        const canvasEl = sceneEl.canvas
        const camera = document.querySelector('a-camera')
        this.isMoving = false
        this.position = {x: 0, y: 20, z: 80}

        canvasEl.addEventListener('touchstart', () => {
            this.isMoving = true
        })

        canvasEl.addEventListener('touchend', () => {
            this.isMoving = false
        })
    },
    tick: function () {
      if (this.isMoving) {
        this.position.z -= 1
        camera.setAttribute('position', this.position)
      }
    }
});

Here's the universal controls link for more info:

https://github.com/donmccurdy/aframe-extras/blob/master/src/controls/touch-controls.js

回答2:

The magnet switch on version 1 cardboard cannot be detected by a web browser. The screen-touch switch on version 2 can.

回答3:

I'm providing this as an answer because I don't have enough reputation to comment, but I'd like to throw this out here: You might need to use an API to track the magnetic input

Also, I tried Noam Almosnino's demo with a Pixel & Cardboard, and it only registered touch input, but not the magnetic input, as expected. I don't think that Don McCurdy's universal-controls are sufficient for tracking the magnetic switch. You could consider this alternative, also provided by Don McCurdy. I'm sorry I couldn't give you a complete answer, but I hope that this helps you in some way.

来源：https://stackoverflow.com/questions/48843601/aframe-cardboard-button-magnet-click-does-not-trigger

标签

button

click

aframe

google-vr