VRFieldOfView.upDegrees
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 upDegrees
read-only property of the VRFieldOfView
interface returns the number of degrees upwards that the field of view extends in.
Syntax
var myUpDegrees = VRFieldOfView.upDegrees;
Value
A double.
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
Specification | Status | Comment |
---|---|---|
WebVR 1.1 The definition of 'upDegrees' in that specification. |
Draft | Initial definition |
Browser compatibility
BCD tables only load in the browser
See also
- WebVR API homepage
- https://mixedreality.mozilla.org/ — demos, downloads, and other resources from the Mozilla VR team.