THREE.OrbitControls = function ( object, domElement ) {
 /*
 other variables
 */
 var scope = this;
 this.enabled = true;
 var lastBeta=0;
 var lastGamma=0;
 this.deviceOrientation = {};

    window.addEventListener( 'deviceorientation', function(event){

        if (!scope.enabled) return;
        scope.deviceOrientation = event;

        var beta   = scope.deviceOrientation.beta  ? THREE.Math.degToRad( scope.deviceOrientation.beta  ) : 0; // X'  (Vertical rotation)
        var gamma  = scope.deviceOrientation.gamma ? THREE.Math.degToRad( scope.deviceOrientation.gamma ) : 0; // Y'' (Horizontal rotation)

        //rotate by previous angle and current angle difference only
        scope.rotateUp(lastBeta-beta);
        scope.rotateLeft(lastGamma-gamma);

        lastBeta=beta;
        lastGamma=gamma;
    }), false );
};