VRFieldOfView

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The VRFieldOfView interface of the WebVR API represents a field of view defined by 4 different degree values describing the view from a center point.

Note: This interface was part of the old WebVR API. It has been superseded by the WebXR Device API.

Properties

VRFieldOfView.upDegrees Read only

The number of degrees upwards that the field of view extends in.

VRFieldOfView.rightDegrees Read only

The number of degrees to the right that the field of view extends in.

VRFieldOfView.downDegrees Read only

The number of degrees downwards that the field of view extends in.

VRFieldOfView.leftDegrees Read only

The number of degrees to the left that the field of view extends in.

Examples

var info = document.querySelector('p');
var list = document.querySelector('ul');
var vrDisplay;

if(navigator.getVRDisplays) {
    reportFieldOfView();
} else {
  info.textContent = 'WebVR API not supported by this browser.'
}

function reportFieldOfView() {
  navigator.getVRDisplays().then(function(displays) {
    vrDisplay = displays[0];
    var lEye = vrDisplay.getEyeParameters('left');
    var rEye = vrDisplay.getEyeParameters('right');
    // lEye and rEye are VREyeParameters objects

    var lFOV = lEye.fieldOfView;
    var rFOV = rEye.fieldOfView;
    // lFOV and rFOV are VRFieldOfView objects

    var listitem1 = document.createElement('li');
    var listitem2 = document.createElement('li');

    listitem1.innerHTML = '<strong>Left eye parameters</strong>'
                 + '<br>Offset: ' + lEye.offset
                 + '<br>Render width: ' + lEye.renderWidth
                 + '<br>Render height: ' + lEye.renderHeight
                 + '<br>Up degrees: ' + lFOV.upDegrees
                 + '<br>Right degrees: ' + lFOV.rightDegrees
                 + '<br>Down degrees: ' + lFOV.downDegrees
                 + '<br>Left degrees: ' + lFOV.leftDegrees

   listitem2.innerHTML = '<strong>Right eye parameters</strong>'
                + '<br>Offset: ' + rEye.offset
                + '<br>Render width: ' + rEye.renderWidth
                + '<br>Render height: ' + rEye.renderHeight
                + '<br>Up degrees: ' + rFOV.upDegrees
                + '<br>Right degrees: ' + rFOV.rightDegrees
                + '<br>Down degrees: ' + rFOV.downDegrees
                + '<br>Left degrees: ' + rFOV.leftDegrees

    list.appendChild(listitem1);
    list.appendChild(listitem2);
  });
}

Specifications

This interface was part of the old WebVR API that has been superseded by the WebXR Device API. It is no longer on track to becoming a standard.

Until all browsers have implemented the new WebXR APIs, it is recommended to rely on frameworks, like A-Frame, Babylon.js, or Three.js, or a polyfill, to develop WebXR applications that will work across all browsers [1].

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
VRFieldOfView
No
≤18-79
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
No
?
No
No
56-80
["Only works in an experimental version of Chrome. (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)", "Daydream View supported in Chrome 56.", "Google Cardboard supported in Chrome 57."]
55
?
No
6.0
Google Cardboard supported in Samsung Internet 7.0.
VRFieldOfView
No
No
No
No
?
No
No
No
?
?
No
No
downDegrees
No
15-79
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
No
?
No
No
56-80
["Only works in an experimental version of Chrome. (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)", "Daydream View supported in Chrome 56.", "Google Cardboard supported in Chrome 57."]
55
?
No
6.0
Google Cardboard supported in Samsung Internet 7.0.
leftDegrees
No
15-79
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
No
?
No
No
56-80
["Only works in an experimental version of Chrome. (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)", "Daydream View supported in Chrome 56.", "Google Cardboard supported in Chrome 57."]
55
?
No
6.0
Google Cardboard supported in Samsung Internet 7.0.
rightDegrees
No
15-79
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
No
?
No
No
56-80
["Only works in an experimental version of Chrome. (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)", "Daydream View supported in Chrome 56.", "Google Cardboard supported in Chrome 57."]
55
?
No
6.0
Google Cardboard supported in Samsung Internet 7.0.
upDegrees
No
15-79
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
No
?
No
No
56-80
["Only works in an experimental version of Chrome. (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)", "Daydream View supported in Chrome 56.", "Google Cardboard supported in Chrome 57."]
55
?
No
6.0
Google Cardboard supported in Samsung Internet 7.0.

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/VRFieldOfView