A camera for Babylon.js which use the WebVR API.

OculusRiftCamera.js

var OculusRiftCamera = (function () {
	var camRift = function (position, scene) {
		BABYLON.OculusCamera.call(this, "OculusRiftCamera", position, scene);
		this._startVR = this._startVR.bind(this);
	};

	camRift.prototype = Object.create(BABYLON.OculusCamera.prototype);

	camRift.prototype.attachControl = function (element, noPreventDefault) {
		BABYLON.OculusCamera.prototype.attachControl.call(this, element, noPreventDefault);

        if (navigator.getVRDevices) {
            navigator.getVRDevices().then(this._startVR);
        } 
        else if (navigator.mozGetVRDevices) {
            navigator.mozGetVRDevices(this._startVR);
        }
	};

	camRift.prototype._startVR = function (devices) {
		var hmdDevice = null,
			sensorDevice = null;
			
        for (var i = 0; i < devices.length; ++i) {
            if (devices[i] instanceof HMDVRDevice) {
                hmdDevice = devices[i];
            }
        }

        for (var i = 0; i < devices.length; ++i) {
            if (devices[i] instanceof PositionSensorVRDevice && (!hmdDevice || devices[i].hardwareUnitId == hmdDevice.hardwareUnitId)) {
                sensorDevice = devices[i];
            }
        }

        var _this = this,   
			enabled = (sensorDevice && hmdDevice) ? true : false,
			state = null,
			quaternion = new BABYLON.Quaternion(),
			rotation = BABYLON.Vector3.Zero;
        
        (function loop() {
            if (enabled) {
                requestAnimationFrame(loop); 
                
                state = sensorDevice.getState();
                quaternion.copyFromFloats(state.orientation.x, state.orientation.y, state.orientation.z, state.orientation.w);
                quaternion.toEulerAnglesToRef(rotation);

                _this.rotation.x = -rotation.z;
                _this.rotation.y = -rotation.y;
                _this.rotation.z = rotation.x;

                // Update the camera
                _this._update();
            }
        })();
    };

	return camRift;
})();