HMDVRDevice
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.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
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, VRDisplay
.
VRDisplay.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
. VRDisplay.displayId
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. VRDisplay.displayName
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;
}
}
}
});
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.