Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The HMDVRDevice
interface of the WebVR API represents a head mounted display, providing access to information about each eye, and allowing us to modify the current field of view.
Methods
HMDVRDevice.getEyeParameters()
- Returns current parameters for the eye specified as its argument ("left" or "right") — such as field of view information — stored in a
VREyeParameters
object. HMDVRDevice.setFieldOfView()
- Sets the field of view for both eyes.
Properties
This interface doesn't define any properties of its own, but it does inherit the properties of its parent interface, VRDevice
.
VRDevice.hardwareUnitId
Read only- Returns the distinct hardware ID for the overall hardware unit that this
VRDevice
is a part of. All devices that are part of the same physical piece of hardware will have the samehardwareUnitId
. VRDevice.deviceId
Read only- Returns the ID for this specific
VRDevice
. The ID shouldn’t change across browser restarts, allowing configuration data to be saved based on it. VRDevice.deviceName
Read only- A human-readable name to identify the
VRDevice
.
Examples
The following example, taken from the WebVR spec, finds the first available HMDVRDevice
and its associated PositionSensorVRDevice
, if it has one.
navigator.getVRDevices().then(function(devices) { for (var i = 0; i < devices.length; ++i) { if (devices[i] instanceof HMDVRDevice) { gHMD = devices[i]; break; } } if (gHMD) { for (var i = 0; i < devices.length; ++i) { if (devices[i] instanceof PositionSensorVRDevice && devices[i].hardwareUnitId === gHMD.hardwareUnitId) { gPositionSensor = devices[i]; break; } } } });
Specifications
Specification | Status | Comment |
---|---|---|
WebVR The definition of 'HMDVRDevice' in that specification. |
Editor's Draft | Initial definition |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | (Yes)[1] | 39 (39)[2] | No support | No support | No support |
Feature | Android | Firefox Mobile (Gecko) | Firefox OS (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|
Basic support | No support | 39.0 (39)[2] 44.0 (44)[3] |
No support | No support | No support | No support | No support |
- [1] The support in Chrome is currently experimental. To find information on Chrome's WebVR implementation status including supporting builds, check out Bringing VR to Chrome by Brandon Jones.
- [2] The support for this feature is currently disabled by default in Firefox. To enable WebVR support in Firefox Nightly/Developer Edition, you can go to
about:config
and enable thedom.vr*
prefs. A better option however is to install the WebVR Enabler Add-on, which does this for you and sets up other necessary parts of the environment. - [3] The
dom.vr*
prefs are enabled by default at this point, in Nightly/Aurora editions.
See also
- WebVR API homepage.
- MozVr.com — demos, downloads, and other resources from the Mozilla VR team.